<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="">Hi,<div class=""><br class=""></div><div class="">Last question. In order to migrate pacemaker with minimum downtime the option I see are Rolling (node by node) and Disconnect Reattach</div><div class=""><a href="http://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ap-upgrade.html" class="">http://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ap-upgrade.html</a></div><div class=""><br class=""></div><div class="">What I want to do is first migrate pacemaker manually and then automate it with some scripts.</div><div class=""><br class=""></div><div class="">According to what Ken Gaillot said:</div><div class=""><br class=""></div><div class=""><pre style="white-space: pre-wrap; font-variant-ligatures: normal; orphans: 2; widows: 2;" class="">"Rolling upgrades are always supported within the same major number line
(i.e. 1.anything to 1.anything). With the major number change, rolling
upgrades will not always be supported. In the case of 2.0.0, we are
supporting rolling upgrades from 1.1.11 or later on top of corosync 2
or later. You should be fine whichever you choose.”</pre><pre style="white-space: pre-wrap; font-variant-ligatures: normal; orphans: 2; widows: 2;" class=""><br class=""></pre><pre style="white-space: pre-wrap; font-variant-ligatures: normal; orphans: 2; widows: 2;" class="">if I implement a set of scripts based on Rolling upgrade to migrate from 1.1.14 to 1.1.18/2.0.0 the risk is that in the future if there will be an upgrade with major number change I should rewrite my automation script to support another type of migration (probably Detach and Reattach). My question is, if I want to avoid this extra work in the future, is the Detach Reattach procedure more adaptable to whatever version migration? </pre><pre style="white-space: pre-wrap; font-variant-ligatures: normal; orphans: 2; widows: 2;" class="">My understanding is that with this procedure PostgreSQL will always be up and running and I only need detach pacemaker from them on the three nodes, migrate them and then Reattach. During this period What happen if PostgreSQL master goes down?</pre><pre style="white-space: pre-wrap; font-variant-ligatures: normal; orphans: 2; widows: 2;" class="">Thanks again for support.</pre><div><br class=""><blockquote type="cite" class=""><div class="">On 30 May 2018, at 04:04, Ken Gaillot <<a href="mailto:kgaillot@redhat.com" class="">kgaillot@redhat.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">On Tue, 2018-05-29 at 22:25 +0200, Salvatore D'angelo wrote:</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">Hi,<br class=""><br class="">Regarding last question about pacemaker dependencies for Ubuntu I<br class="">found this for 1.1.18:<br class=""><a href="https://launchpad.net/ubuntu/+source/pacemaker/1.1.18-0ubuntu2/+build" class="">https://launchpad.net/ubuntu/+source/pacemaker/1.1.18-0ubuntu2/+build</a><br class="">/14818856<br class=""><br class="">It’s not clear to me why pacemaker 1.1.18 is available on<br class=""><a href="http://launchpad.net/" class="">launchpad.net</a><span class="Apple-converted-space"> </span>and not on the official Ubuntu Search Packages website.<br class="">However, can I assume 1.1.19 and 2.2.0 have the same dependencies<br class="">list (considering they have only removed deprecated function and<br class="">applied some bug fixes)?<br class=""></blockquote><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Yes, the dependencies should be the same (when corosync 2 is used)</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">Thanks again for answers<br class=""><br class=""><br class=""><blockquote type="cite" class="">On 29 May 2018, at 17:41, Jehan-Guillaume de Rorthais <jgdr@dalibo.<br class="">com> wrote:<br class=""><br class="">On Tue, 29 May 2018 14:23:31 +0200<br class="">Salvatore D'angelo <<a href="mailto:sasadangelo@gmail.com" class="">sasadangelo@gmail.com</a>> wrote:<br class="">...<br class=""><blockquote type="cite" class="">2. I read some documentation about upgrade and since we want 0 ms<br class="">downtime I<br class="">think the Rolling Upgrade (node by node) is the better approach.<br class=""></blockquote><br class="">The 0ms upgrade is almost impossible. At some point, you will have<br class="">to move the<br class="">master somewhere else.<br class=""><br class="">Unless you have some session management that are able to wait for<br class="">the<br class="">current sessions to finish, then hold the incoming sessions while<br class="">you are<br class="">moving the master, you will have downtime and/or xact rollback.<br class=""><br class="">Good luck anyway :)<br class=""><br class="">-- <br class="">Jehan-Guillaume de Rorthais<br class="">Dalibo<br class=""></blockquote><br class="">_______________________________________________<br class="">Users mailing list:<span class="Apple-converted-space"> </span><a href="mailto:Users@clusterlabs.org" class="">Users@clusterlabs.org</a><br class=""><a href="https://lists.clusterlabs.org/mailman/listinfo/users" class="">https://lists.clusterlabs.org/mailman/listinfo/users</a><br class=""><br class="">Project Home:<span class="Apple-converted-space"> </span><a href="http://www.clusterlabs.org/" class="">http://www.clusterlabs.org</a><br class="">Getting started:<span class="Apple-converted-space"> </span><a href="http://www.clusterlabs.org/doc/Cluster_from_Scratch" class="">http://www.clusterlabs.org/doc/Cluster_from_Scratch</a>.<br class="">pdf<br class="">Bugs:<span class="Apple-converted-space"> </span><a href="http://bugs.clusterlabs.org/" class="">http://bugs.clusterlabs.org</a><br class=""></blockquote><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">--<span class="Apple-converted-space"> </span></span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Ken Gaillot <</span><a href="mailto:kgaillot@redhat.com" style="font-family: Helvetica; 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