<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Thanks for your help.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><blockquote type="cite" class=""><div dir="ltr" class=""><ul class=""><li class="">What was the starting value for MTU?</li></ul></div></blockquote>1500<br class=""><blockquote type="cite" class=""><div dir="ltr" class=""><ul class=""><li class="">What was the starting value changed to for MTU?<br class=""></li></ul></div></blockquote>9000<br class=""><blockquote type="cite" class=""><div dir="ltr" class=""><ul class=""><li class="">Can ping between all your controllers?</li></ul></div></blockquote>yes, all container starts except nova-conductor, nova-scheduler, maraidb</div><div class=""><br class=""></div><div class=""><br class=""><blockquote type="cite" class=""><div dir="ltr" class=""><ul class=""><li class="">Do you just have two controllers running mariadb?</li></ul></div></blockquote>yes<br class=""><blockquote type="cite" class=""><div dir="ltr" class=""><ul class=""><li class="">How did you change MTU?</li></ul></div></blockquote><div class=""><br class=""></div>On the 3 servers:<br class=""><pre class=""><code class="">nmcli connection modify team0-port1 802-3-ethernet.mtu 9000
nmcli connection modify team1-port2 802-3-ethernet.mtu 9000</code></pre><pre class=""><code class=""><pre class=""><code class="">nmcli connection modify type team0 team.runner lack ethernet.mtu 9000</code></pre><pre class="">nmcli con down team0</pre><pre class=""><pre class="">nmcli con down team1</pre><div class=""><br class=""></div></pre></code></pre><div class=""><br class=""></div><blockquote type="cite" class=""><div dir="ltr" class=""><ul class=""><li class="">Was the change reverted at the network level as well (switches need to be configured higher or at the same MTU value then the servers)</li></ul></div></blockquote><div class="">I didn’t change Mtu on network (switches) , but ping -s 10.0.5.117 (iscsi bay) was working from serv3.</div></div><div class=""><br class=""></div><div class="">I changed the value of the mtu because the creation of the volumes takes a lot of time I find (4 minutes for 20G, which is too long for what I want to do, the patience of the students decreases with the years)</div><div class=""><br class=""></div><div class="">Franck</div>
<div><br class=""><blockquote type="cite" class=""><div class="">Le 4 févr. 2022 à 23:12, Laurent Dumont <<a href="mailto:laurentfdumont@gmail.com" class="">laurentfdumont@gmail.com</a>> a écrit :</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><ul class=""><li class="">What was the starting value for MTU?</li><li class="">What was the starting value changed to for MTU?<br class=""></li><li class="">Can ping between all your controllers?</li><li class="">Do you just have two controllers running mariadb?</li><li class="">How did you change MTU?</li><li class="">Was the change reverted at the network level as well (switches need to be configured higher or at the same MTU value then the servers)</li></ul><div class=""><a class="">4567 seems to be the port for galera (clustering for mariadb)</a></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Feb 4, 2022 at 11:52 AM Franck VEDEL <<a href="mailto:franck.vedel@univ-grenoble-alpes.fr" class="">franck.vedel@univ-grenoble-alpes.fr</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;" class=""><div class=""><div class="">Hello,</div><div class="">I am in an emergency situation, quite catastrophic situation because I do not know what to do.</div><div class=""><br class=""></div><div class="">I have an Openstack cluster with 3 servers (serv1, serv2, serv3). He was doing so well…</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">A network admin came to me and told me to change an MTU on the cards. I knew it shouldn't be done...I shouldn't have done it.</div><div class="">I did it.</div><div class="">Of course, it didn't work as expected. I went back to my starting configuration and there I have a big problem with mariadb which is set up on serv1 and serv2.</div><div class=""><br class=""></div><div class="">Here are my errors:</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div class="">2022-02-04 17:40:36 0 [ERROR] WSREP: failed to open gcomm backend connection: 110: failed to reach primary view: 110 (Connection timed out)</div><div class=""><span style="white-space:pre-wrap" class=""> </span> at gcomm/src/pc.cpp:connect():160</div><div class="">2022-02-04 17:40:36 0 [ERROR] WSREP: gcs/src/gcs_core.cpp:gcs_core_open():209: Failed to open backend connection: -110 (Connection timed out)</div><div class="">2022-02-04 17:40:36 0 [ERROR] WSREP: gcs/src/gcs.cpp:gcs_open():1475: Failed to open channel 'openstack' at '<a class="">gcomm://10.0.5.109:4567,10.0.5.110:4567':</a> -110 (Connection timed out)</div><div class="">2022-02-04 17:40:36 0 [ERROR] WSREP: gcs connect failed: Connection timed out</div><div class="">2022-02-04 17:40:36 0 [ERROR] WSREP: wsrep::connect(<a class="">gcomm://10.0.5.109:4567,10.0.5.110:4567</a>) failed: 7</div><div class="">2022-02-04 17:40:36 0 [ERROR] Aborting</div></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">I do not know what to do. My installation is done with kolla-ansible, mariadb docker restarts every 30 seconds.</div><div class=""><br class=""></div><div class="">Can the "kolla-ansible reconfigure mariadb" command be a solution?</div><div class="">Could the command "kolla-ansible mariadb recovery" be a solution?</div><div class=""><br class=""></div><div class="">Thanks in advance if you can help me.</div><div class=""><br class=""></div></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">
<div dir="auto" style="letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none;" class=""><div dir="auto" style="letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none;" class=""><div dir="auto" style="letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none;" class=""><div dir="auto" style="letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none;" class=""><div class=""><span style="color:rgb(31,73,125);font-family:Arial,sans-serif;font-size:10pt" class="">Franck</span></div></div></div><div style="margin:0cm 0cm 0.0001pt" class=""><br class=""></div><div style="font-family:Calibri,sans-serif;font-size:11pt;margin:0cm 0cm 0.0001pt" class=""></div></div></div>
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