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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/foomo/foomo-docs/tree/main/foomo/blog/2022-01-25-prometheus-cardinality-issues/index.mdx" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/blog/why-bundle-size-is-important"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Why bundle size is important?</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/blog/searching-for-search-engines"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">The never ending search a search engine 2022-01 edition</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#the-annoyance" class="table-of-contents__link toc-highlight">The Annoyance</a></li><li><a href="#the-problem" class="table-of-contents__link toc-highlight">The Problem</a></li><li><a href="#the-source" class="table-of-contents__link toc-highlight">The Source</a></li><li><a href="#the-solution" class="table-of-contents__link toc-highlight">The Solution</a></li><li><a href="#the-further-reading" class="table-of-contents__link toc-highlight">The Further Reading</a></li></ul></div></div></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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blog/tags/ops.html
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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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@ -34,7 +34,7 @@ Or to quote user <a href="https://www.reddit.com/user/naveen17797/" target="_bla
Since we can&#x27;t get prometheus up and running to utilize PromQL to detect the potential issues, we have to find another way to detect high cardinality.
Therefore, we might want to get our hands dirty with some <code>kubectl exec -it -n monitoring pods/prometheus-prometheus-kube-prometheus-prometheus-0 -- sh</code>, and run the prometheus <code>tsdb</code> analysis too.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">/prometheus $ promtool tsdb analyze </span><span class="token builtin class-name" style="color:rgb(255, 203, 107)">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Which produced the result.</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Block ID: 01FT8E8YY4THHZ2S7C3G04GJMG</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Duration: 1h59m59.997s</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Series: 564171</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Label names: 285</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings (unique label pairs): 21139</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Postings entries (total label pairs): 6423664</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; Highest cardinality metric names:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; 11340 haproxy_server_http_responses_total</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">&gt; ...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>We see the potential issue here, where the <code>haproxy_server_http_responses_total</code> metric is having a super-high cardinality which is growing.
We need to deal with it, so that our prometheus instance can breathe again. In this particular case, the solution was updating the haproxy.</p><p>... or burn it, up to you.</p><p><img loading="lazy" alt="Flame Thrower" src="/assets/images/flame-thrower-56bcf89132356ff53c03ca029d9d0746.webp" width="1440" height="1080" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="the-further-reading">The Further Reading<a class="hash-link" href="#the-further-reading" title="Direct link to heading">​</a></h2><ol><li><a href="https://github.com/prometheus/prometheus/blob/main/tsdb/docs/format/wal.md" target="_blank" rel="noopener noreferrer">WAL Definition</a></li><li><a href="https://ganeshvernekar.com/blog/prometheus-tsdb-wal-and-checkpoint/" target="_blank" rel="noopener noreferrer">WAL &amp; Checkpoints</a></li><li><a href="https://www.robustperception.io/using-tsdb-analyze-to-investigate-churn-and-cardinality" target="_blank" rel="noopener noreferrer">Using TSDB</a></li><li><a href="https://www.robustperception.io/which-are-my-biggest-metrics" target="_blank" rel="noopener noreferrer">Biggest Metrics</a></li><li><a href="https://www.robustperception.io/cardinality-is-key" target="_blank" rel="noopener noreferrer">Cardinality</a></li></ol></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/prometheus">prometheus</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/cardinality">cardinality</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/devops">devops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/ops">ops</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/k-8-s">k8s</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/oom">oom</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/memory">memory</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">github</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://github.com/foomo" target="_blank" rel="noopener noreferrer" class="footer__link-item">https://github.com/foomo</a></li></ul></div><div class="col footer__col"><div class="footer__title">legal</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/etc/imprint">Imprint</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">© 2022 bestbytes</div></div></div></footer></div>
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