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</o:shapelayout></xml><![endif]--></head><body lang=HU link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D;mso-fareast-language:EN-US'>Hi, This does not really answer my question. Placing the cluster into maintenance mode just avoids monitoring and restarting, but what about the things I am asking below? (data dir related questions)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D;mso-fareast-language:EN-US'>thanks<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='font-size:11.0pt;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></a></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt'>From:</span></b><span lang=EN-US style='font-size:11.0pt'> Kristián Feldsam [mailto:admin@feldhost.cz] <br><b>Sent:</b> Thursday, October 12, 2017 7:51 PM<br><b>To:</b> Attila Megyeri <amegyeri@minerva-soft.com>; users@clusterlabs.org<br><b>Subject:</b> Re:[ClusterLabs] Mysql upgrade in DRBD setup<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>hello, you should put cluster to maintenance mode<span style='font-size:12.0pt'><o:p></o:p></span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Sent from my MI 5<o:p></o:p></p></div><div><p class=MsoNormal>On Attila Megyeri <<a href="mailto:amegyeri@minerva-soft.com">amegyeri@minerva-soft.com</a>>, Oct 12, 2017 6:55 PM wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>Hi all,</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'> </span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>What is the recommended mysql server upgrade methodology in case of an active/passive DRBD storage?</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>(Ubuntu is the platform)</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'> </span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;mso-fareast-language:EN-US'><span style='mso-list:Ignore'>1)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>On the passive node the mysql data directory is not mounted, so the backup fails (some postinstall jobs will attempt to perform manipulations on certain files in the data directory).</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;mso-fareast-language:EN-US'><span style='mso-list:Ignore'>2)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>If the upgrade is done on the active node, it will restart the service (with the service restart, not in a crm managed fassion…), which is not a very good option (downtime in a HA solution). Not to mention, that it will update some files in the mysql data directory, which can cause strange issues if the A/P pair is changed – since on the other node the program code will still be the old one, while the data dir is already upgraded.</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'> </span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>Any hints are welcome!</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'> </span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>Thanks,</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'>Attila</span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;mso-fareast-language:EN-US'> </span><span style='font-size:11.0pt;mso-fareast-language:EN-US'><o:p></o:p></span></p></div></blockquote></div></div></body></html>