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commit d9e5c8529d478e5e4f8109ec0e00bb4404861722

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Author: iwilltry42 <iwilltry42@gmail.com>
Date:   Thu May 20 07:57:22 2021 +0200

    docs: add faq entry on 'nf_conntrack_max: permission denied' issue (#607)
pull/667/head
iwilltry42 3 years ago
parent 22e5969754
commit 3165454bd1
4 changed files with 64 additions and 41 deletions
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  1. 25
      faq/faq/index.html
  2. 2
      search/search_index.json
  3. 78
      sitemap.xml
  4. BIN
      sitemap.xml.gz

25
faq/faq/index.html
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@ -883,6 +883,13 @@
Spurious PID entries in /proc after deleting k3d cluster with shared mounts
</a>
</li>
<li class="md-nav__item">
<a href="#nodes-fail-to-start-or-get-stuck-in-notready-state-with-log-nf_conntrack_max-permission-denied" class="md-nav__link">
Nodes fail to start or get stuck in NotReady state with log nf_conntrack_max: permission denied
</a>
</li>
</ul>
@ -1003,6 +1010,13 @@
Spurious PID entries in /proc after deleting k3d cluster with shared mounts
</a>
</li>
<li class="md-nav__item">
<a href="#nodes-fail-to-start-or-get-stuck-in-notready-state-with-log-nf_conntrack_max-permission-denied" class="md-nav__link">
Nodes fail to start or get stuck in NotReady state with log nf_conntrack_max: permission denied
</a>
</li>
</ul>
@ -1102,6 +1116,15 @@ Some can be fixed by passing the <code>HTTP_PROXY</code> environment variables t
<li><code>diff &lt;(df -ha | grep pods | awk '{print $NF}') &lt;(df -h | grep pods | awk '{print $NF}') | awk '{print $2}' | xargs umount -l</code></li>
<li>As per the conversation on <a href="https://github.com/rancher/k3d/issues/594#issuecomment-837900646">rancher/k3d#594</a> above issue wasn&rsquo;t reported/known earlier and so there are high chances that it&rsquo;s not universal.</li>
</ul>
<h3 id="nodes-fail-to-start-or-get-stuck-in-notready-state-with-log-nf_conntrack_max-permission-denied">Nodes fail to start or get stuck in <code>NotReady</code> state with log <code>nf_conntrack_max: permission denied</code><a class="headerlink" href="#nodes-fail-to-start-or-get-stuck-in-notready-state-with-log-nf_conntrack_max-permission-denied" title="Permanent link">&para;</a></h3>
<ul>
<li>When: This happens when running k3d on a Linux system with a kernel version &gt;= 5.12.2 when creating a new cluster</li>
<li>the node(s) stop or get stuck with a log line like this: <code>&lt;TIMESTAMP&gt; F0516 05:05:31.782902 7 server.go:495] open /proc/sys/net/netfilter/nf_conntrack_max: permission denied</code></li>
<li>Why: The issue was introduced by a change in the Linux kernel (<a href="https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.2">Changelog 5.12.2</a>: <a href="https://github.com/torvalds/linux/commit/671c54ea8c7ff47bd88444f3fffb65bf9799ce43">Commit</a>), that changed the netfilter_conntrack behavior in a way that <code>kube-proxy</code> is not able to set the <code>nf_conntrack_max</code> value anymore</li>
<li>Workaround: as a workaround, we can tell <code>kube-proxy</code> to not even try to set this value: <code>k3d cluster create --k3s-server-arg "--kube-proxy-arg=conntrack-max-per-core=0" --k3s-agent-arg "--kube-proxy-arg=conntrack-max-per-core=0" --image rancher/k3s:v1.20.6-k3s</code></li>
<li>Fix: This is going to be fixed &ldquo;upstream&rdquo; in k3s itself in <a href="https://github.com/k3s-io/k3s/pull/3337">rancher/k3s#3337</a> and backported to k3s versions as low as v1.18.</li>
<li>Issue Reference: <a href="https://github.com/rancher/k3d/issues/607">rancher/k3s#607</a></li>
</ul>
@ -1110,7 +1133,7 @@ Some can be fixed by passing the <code>HTTP_PROXY</code> environment variables t
<div class="md-source-date">
<small>
Last update: <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date">May 17, 2021</span>
Last update: <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date">May 20, 2021</span>
</small>

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<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><url>
<loc>https://k3d.io/</loc>
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<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d/</loc>
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<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_cluster/</loc>
<lastmod>2021-05-19</lastmod>
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<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_cluster_create/</loc>
<lastmod>2021-05-19</lastmod>
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<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_cluster_delete/</loc>
<lastmod>2021-05-19</lastmod>
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<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_cluster_list/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_cluster_start/</loc>
<lastmod>2021-05-19</lastmod>
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<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_cluster_stop/</loc>
<lastmod>2021-05-19</lastmod>
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<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_completion/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_config/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_config_init/</loc>
<lastmod>2021-05-19</lastmod>
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<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_docgen/</loc>
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</url><url>
<loc>https://k3d.io/usage/commands/k3d_image/</loc>
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<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_image_import/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_kubeconfig/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_kubeconfig_get/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_kubeconfig_merge/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_node/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_node_create/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_node_delete/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_node_list/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_node_start/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_node_stop/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_registry/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_registry_create/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_registry_delete/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_registry_list/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/commands/k3d_version/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/configfile/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/kubeconfig/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/multiserver/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/guides/exposing_services/</loc>
<lastmod>2021-05-19</lastmod>
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</url><url>
<loc>https://k3d.io/usage/guides/registries/</loc>
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<changefreq>daily</changefreq>
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<loc>https://k3d.io/usage/guides/calico/</loc>
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<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/usage/guides/cuda/</loc>
<lastmod>2021-05-19</lastmod>
<lastmod>2021-05-20</lastmod>
<changefreq>daily</changefreq>
</url><url>
<loc>https://k3d.io/internals/defaults/</loc>
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</url><url>
<loc>https://k3d.io/internals/networking/</loc>
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<loc>https://k3d.io/faq/v1vsv3-comparison/</loc>
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<changefreq>daily</changefreq>
</url>
</urlset>

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