Re: pg_basebackup: could not get write-ahead log end position from server: ERROR

From: "Ahmed, Nawaz" <Nawaz(at)fast(dot)au(dot)fujitsu(dot)com>
To: "Saeed Ahmed (DB)" <saeed(dot)ahmed1(at)telenor(dot)com(dot)pk>, "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Cc: Database Services <db(dot)is(at)telenor(dot)com(dot)pk>
Subject: Re: pg_basebackup: could not get write-ahead log end position from server: ERROR
Date: 2018-06-08 21:41:29
Message-ID: BAAE097528E6CB4FB2BE65AEFA6EEE04939FC609@SYD1217
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<div dir="auto">Hi,</div>
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<div dir="auto">1) have you configured the archive_command to a script that archives the online WAL to the archive destination and deletes the file?</div>
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<div dir="auto">2) As&nbsp;far as I know the cleanup of archive destination has to done manually.&nbsp;</div>
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<div dir="auto">Regards,</div>
<div dir="auto">Nawaz<br>
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<b>From:</b> Saeed Ahmed (DB) &lt;saeed(dot)ahmed1(at)telenor(dot)com(dot)pk&gt;<br>
<b>Date:</b> 9 June 2018 at 4:27:25 am AEST<br>
<b>To:</b> pgsql-admin(at)postgresql(dot)org &lt;pgsql-admin(at)postgresql(dot)org&gt;<br>
<b>Cc:</b> Database Services &lt;db(dot)is(at)telenor(dot)com(dot)pk&gt;<br>
<b>Subject:</b> pg_basebackup: could not get write-ahead log end position from server: ERROR<br>
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<p class="MsoNormal">Dear Team,</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">1)Whilst taking full backup via pg_basebackup I have facing below error. Backup is schedule via cronjob.</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal"><span style="background:yellow">================================================================================</span></p>
<p class="MsoNormal"><span style="background:yellow">****** Full Backup of posgresql database started Fri Jun 8 20:40:36 PKT 2018.</span></p>
<p class="MsoNormal"><span style="background:yellow">080618204036</span></p>
<p class="MsoNormal"><span style="background:yellow"></span></p>
<p class="MsoNormal"><span style="background:yellow">pg_basebackup: initiating base backup, waiting for checkpoint to complete</span></p>
<p class="MsoNormal"><span style="background:yellow">pg_basebackup: checkpoint completed</span></p>
<p class="MsoNormal"><span style="background:yellow">pg_basebackup: write-ahead log start point: 43/400252F8 on timeline 1</span></p>
<p class="MsoNormal"><span style="background:yellow">17624153/17624153 kB (100%), 2/2 tablespaces&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></p>
<p class="MsoNormal"><span style="background:yellow">pg_basebackup: could not get write-ahead log end position from server: ERROR:&nbsp; requested WAL segment 000000010000004300000040 has already been removed</span></p>
<p class="MsoNormal"><span style="background:yellow">pg_basebackup: removing data directory &quot;/db01/pgdata/hot_backup/080618204036&quot;</span></p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">2)Also after complete backup I have to manually delete the wal archive files using pg_archivecleanup. Is there any way to automatically delete after full backup is complete and wal archive are no longer required.</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">pg_archivecleanup -d /db01/wal_archive 00000001000000390000000A</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">Kindly let me know how to rectify. </p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">pg_basebackup -z -X fetch --progress -v --format=t -D /db01/pgdata/hot_backup/$DD --no-password</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal"><b><u><span style="text-decoration:none">&nbsp;</span></u></b></p>
<p class="MsoNormal"><b><u><span style="text-decoration:none">&nbsp;</span></u></b></p>
<p class="MsoNormal"><b><u>Current Version:</u></b></p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; version&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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<p class="MsoNormal">---------------------------------------------------------------------------------------------------------</p>
<p class="MsoNormal">PostgreSQL 10.1 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18), 64-bit</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal"><b><u>LINUX : .10.0-327.el7.x86_64</u></b></p>
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<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">Regards,</p>
<p class="MsoNormal">&nbsp;</p>
<p class="MsoNormal">Saeed Ahmed</p>
<p class="MsoNormal">&nbsp;</p>
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