[Linux-cluster] apache resource problem in RHCS 5.1

[Dave Costakos]

For what it's worth,  Lorenz, sometimes it's the simplest things that cause
errors. I had this same error.  It turned out that the parent directory for
the pid file didn't exist.  It's complaining about
/var/run/cluster/apache/apache:test_httpd.pid.  In my case /var/run/cluster
existed but /var/run/cluster/apache did not.  Can you confirm that
/var/run/cluster/apache exists?

-Dave.


On Wed, Jun 4, 2008 at 6:31 AM, Lorenz Pfiffner <lp at xbe.ch> wrote:

> Hi Ron
>
> Thanks for replying! Your answer gave me some tipps, but none of them
> worked for me. I don't have SELinux enabled or permissive, it's disabled
> anyway.
>
> I couldn't make it working with the apache resource. For me it seems quite
> unstable and it's nowhere really mentioned in any documentation I found. So
> please, if any RedHat guy is reading this, can you please improve this
> feature and put it into the official documentation. For example, why does
> the apache.sh script change the "Listen" directive? How can I execute
> apache.sh manually to debug the resource?
>
> My workaround: I altered the default httpd script and made a script
> resource. In that case it's working as expected. The only thing that bothers
> me quite a lot is the relocation time. It takes about 50 to 60 seconds to
> relocate 5 IPs, a GFS mount and the apache script resource! Is this a
> reasonable time? On older clusters I remember times around 5 to 10 seconds.
>
> Kind regards
> Lorenz
>
>
> Ron Cronenwett wrote:
>
>> Hi Lorenz
>>
>> I had a similar problem while testing with Centos 5.1 on a VMWare
>> workstation setup. One more difference, I have been using
>> system-config-cluster
>> to configure the cluster. Luci seemed to be giving me problems with
>> setting up a mount of an NFS export. But I have not retried Luci since
>> changing
>> the selinux setting I mention below.
>>
>> I found if I did not configure SELinux with setenforce permissive, the
>> /usr/share/cluster/apache.sh script did not execute. Once that runs,
>> it creates
>> /etc/cluster/apache/apache:"name". In that subdirectory, the script
>> creates an httpd.conf file from /etc/httpd/httpd.conf. I also found
>> the new httpd.conf
>> had the Listen statement commented out even though I had set it to my
>> clustered address in /etc/httpd/httpd. I needed to manually uncomment
>> the
>> Listen statement on each node in
>> /etc/cluster/apache/apache:"name"/httpd.conf.
>>
>> Hope this helps.
>>
>> Ron C.
>>
>>
>>
>> On Thu, May 29, 2008 at 11:22 AM, Lorenz Pfiffner <lp at xbe.ch> wrote:
>>
>>> Hello everybody
>>>
>>> I have the following test setup:
>>>
>>> - RHEL 5.1 Cluster Suite with rgmanager-2.0.31-1 and cman-2.0.73-1
>>> - Two VMware machines on an ESX 3.5 U1, so no fence device (it's only a
>>> test)
>>> - 4 IP resources defined
>>> - GFS over DRBD, doesn't matter, because it doesn't even work on a local
>>> disk
>>>
>>> Now I would like to have an "Apache Resource" which i can select in the
>>> luci interface. I assume it's using the /usr/share/cluster/apache.sh script.
>>> If I try to start it, the error message looks like
>>> this:
>>>
>>> May 28 16:18:15 testsrv clurgmgrd: [18475]: <err> Starting Service
>>> apache:test_httpd > Failed
>>> May 28 16:18:15 testsrv clurgmgrd[18475]: <notice> start on apache
>>> "test_httpd" returned 1 (generic error)
>>> May 28 16:18:15 testsrv clurgmgrd[18475]: <warning> #68: Failed to start
>>> service:test_proxy_http; return value: 1
>>> May 28 16:18:15 testsrv clurgmgrd[18475]: <notice> Stopping service
>>> service:test_proxy_http
>>> May 28 16:18:16 testsrv clurgmgrd: [18475]: <err> Checking Existence Of
>>> File /var/run/cluster/apache/apache:test_httpd.pid [apache:test_httpd] >
>>> Failed - File Doesn't Exist
>>> May 28 16:18:16 testsrv clurgmgrd: [18475]: <err> Stopping Service
>>> apache:test_httpd > Failed
>>> May 28 16:18:16 testsrv clurgmgrd[18475]: <notice> stop on apache
>>> "test_httpd" returned 1 (generic error)
>>> May 28 16:18:16 testsrv clurgmgrd[18475]: <warning> #71: Relocating
>>> failed service service:test_proxy_http
>>>
>>> I've another cluster in which I had to alter the default init.d/httpd
>>> script to be able to run multiple apache instances (not vhosts) on one
>>> server. But there I have the Apache Service configured with
>>> a "Script Resource".
>>>
>>> Is this supposed to work of is it a feature in development? I don't see
>>> something like "Apache Resource" in the current documentation.
>>>
>>> Kind Regards
>>> Lorenz
>>>
>>>
>>> --
>>> Linux-cluster mailing list
>>> Linux-cluster at redhat.com
>>> https://www.redhat.com/mailman/listinfo/linux-cluster
>>>
>>
>>
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-- 
Dave Costakos
mailto:david.costakos at gmail.com
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