Re: Centos Hot-Standby, different Startup behavior between systemctl & pg_ctl start.

From: <kurt(at)thepw(dot)com>
To: "Michael Wood" <esiotrot(at)gmail(dot)com>
Cc: "PostgreSQL List - Novice" <pgsql-novice(at)postgresql(dot)org>
Subject: Re: Centos Hot-Standby, different Startup behavior between systemctl & pg_ctl start.
Date: 2016-01-04 13:48:40
Message-ID: 20160104064840.02ba4c4c55b8355eb9c1d44e33aacdec.41d630d357.wbe@email15.secureserver.net
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<html><body><span style="font-family:Verdana; color:#000; font-size:10pt;"><div>Hello Michael,</div><div>&nbsp;&nbsp;&nbsp;&nbsp; Thanks for your reply! The contents of /var/backup/WALarchive will of course vary, but at the moment I see:</div><div><br></div><div>[root(at)databaseServer5 ~]# ls -ld /var/backup<br>drwxr-xr-x. 3 root root 4096 Dec 24 10:16 /var/backup<br>[root(at)databaseServer5 ~]# ls -ld /var/backup/WALarchive/<br>drwx------. 2 postgres postgres 69632 Jan&nbsp; 4 08:40 /var/backup/WALarchive/<br>[root(at)databaseServer5 ~]# ls -ld /var/backup/WALarchive/*<br>-rw-------. 1 postgres postgres 16777216 Jan&nbsp; 4 08:36 /var/backup/WALarchive/000000010000000B0000009F<br>-rw-------. 1 postgres postgres 16777216 Jan&nbsp; 4 08:41 /var/backup/WALarchive/000000010000000B000000A0<br>[root(at)databaseServer5 ~]# <br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I dis this as root, and I run systemctl as root. But maybe, if systemctl does anything as an unprivileged user, the permissions on /var/backup/WALarchive would cause a problem? I will try adjusting them.</div><div><br></div>
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-------- Original Message --------<br>
Subject: Re: [NOVICE] Centos Hot-Standby, different Startup behavior<br>
between systemctl &amp; pg_ctl start.<br>
From: Michael Wood &lt;<a href="mailto:esiotrot(at)gmail(dot)com">esiotrot(at)gmail(dot)com</a>&gt;<br>
Date: Sat, January 02, 2016 5:39 am<br>
To: <a href="mailto:kurt(at)thepw(dot)com">kurt(at)thepw(dot)com</a><br>
Cc: PostgreSQL List - Novice &lt;<a href="mailto:pgsql-novice(at)postgresql(dot)org">pgsql-novice(at)postgresql(dot)org</a>&gt;<br>
<br>
<div dir="ltr">Hi</div> <div dir="ltr">I apologise if the quoting in my message is broken. Replying from my phone.</div> <div dir="ltr">On 31 Dec 2015 10:31 PM, &lt;<a target="_blank" href="mailto:kurt(at)thepw(dot)com">kurt(at)thepw(dot)com</a>&gt; wrote:<br> &gt;<br> &gt;<br> &gt; Hello,<br> &gt; &nbsp;&nbsp;&nbsp;&nbsp; I am running postgresql on Centos 7.2, using postgresql from the standard Centos repository, which provides postgresql.<br> &gt;<br> &gt; &nbsp;&nbsp;&nbsp;&nbsp; My goal is to run a Master and a hot-standby server via WAL-file archiving, and the standby machine seems to be working prop[erly as long as I start postgresql on it via pg_ctl on the command line as the postgres user. The logs in pg_log collect lots of messages like:<br> &gt;<br> &gt; "cp: cannot stat ‘/var/backup/WALarchive/0000000100000006000000FD’: No such file or directory"</div> <div dir="ltr">What does the following output?</div> <div dir="ltr"># ls -ld / /var /var/backup /var/backup/WALarchive /var/backup/WALarchive/*</div> <div dir="ltr">&gt; but eventually i see a line like:<br> &gt;<br> &gt; "LOG:&nbsp; restored log file "0000000100000006000000FD" from archive"</div>
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