[Spacewalk-list] Postgresql Fails to Start After Datastore Failure

Mon Nov 24 16:32:13 UTC 2014

I found the log file… looks like it is complaining that it cannot complete the autorecovery and the database needs to be restores from backup.  Unfortunately all of my VM snapshots got hosed and that was my backup…. 

I’m still hoping there is a way I can attempt to repair the schema while preserving the data… in the process of trying to re-run the spacewalk-setup.  

From: spacewalk-list-bounces at redhat.com [mailto:spacewalk-list-bounces at redhat.com] On Behalf Of Glennie, Jonathan - 0443 - MITLL
Sent: Monday, November 24, 2014 10:13 AM
To: spacewalk-list at redhat.com
Subject: Re: [Spacewalk-list] Postgresql Fails to Start After Datastore Failure

I had received the lock error message before so I did start by removing that file.  It removed that error message but it was still saying Failed whenever I tried to start the service.  

Are there any commands that I can use to stat the DB manually in a more verbose way so I can get some additional info on what’s failing?   Or is there any “repair” command I can use from spacewalk to re-install the service but not overwrite the database?   

From: spacewalk-list-bounces at redhat.com [mailto:spacewalk-list-bounces at redhat.com] On Behalf Of Waldirio Manhães Pinheiro
Sent: Friday, November 21, 2014 8:05 PM
To: spacewalk-list at redhat.com
Subject: Re: [Spacewalk-list] Postgresql Fails to Start After Datastore Failure

Hello Jon,

You can check in /var/lib/pgsql/data, check if you have a file named postmaster.pid, if yes, you can remove (rm postmaster.pid) and restart or start the postgresql daemon.

[root at spacewalk ~]# service postgresql start

if you check, will be recreated the file

[root at spacewalk data]# ll postmaster.pid

-rw-------. 1 postgres postgres 45 Nov 21 23:03 postmaster.pid

[root at spacewalk data]#

The problem normally is, if your db are running and for any reason you lost the connection with the directory, the file will still there and when you try to restart, the file will not be rewrite and the daemon will not start.

Try it and tell me if fix your problem.

Take Care and have a great weekend.

______________
Atenciosamente
Waldirio
msn: waldirio at gmail.com
Skype: waldirio
Site: www.waldirio.com.br
Blog: blog.waldirio.com.br

LinkedIn: http://br.linkedin.com/pub/waldirio-pinheiro/22/b21/646
PGP: www.waldirio.com.br/public.html

On Fri, Nov 21, 2014 at 6:36 PM, Glennie, Jonathan - 0443 - MITLL <jrglenni at ll.mit.edu> wrote:

Hello-

Our spacewalk server failed badly the other day when the underlying datastore went offline.  The system boots but when spacewalk tries to start up, the postgresql service fails to start.  I have checked /var/log/messages for any indication as to why, but there is nothing I can find.  I’ve also checked in /var/lib/pqsql/pgstatrtup.log but the entries in there seem old and not relevant to the current situation.  

Does anyone know where or how I might go about starting the service in some kind of debug mode to try and get a better idea of what’s going on, or if there are logs that get saved somewhere that I haven’t found yet?  I’m definitely not very well versed in postgrest DB maintenance or troubleshooting, so any help would be greatly appreciated.  Thanks in advance.

-Jon

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