CentOS - Jul 2008 - BackupPC won't fork after CentOS 5.2 upgrade

For some time now i have been running BackupPC 3.1.0 on CentOS 5.1 
x86_64 however after upgrading to CentOS 5.2 BackupPC will not start.

"sudo /etc/init.d/backuppc start" return OK but there is no BackupPC 
processes.

This fails also.
# sudo -u backuppc /usr/bin/BackupPC -d
# echo $?
0

This succeeds, but of course does not fork.
# sudo -u backuppc /usr/bin/BackupPC

So for some reason after the CentOS 5.2 upgrade it will not fork into 
the background.

I have run the perl debugger over it and up until the fork everything is 
fine.

Nothing appears in the LOG.

Any ideas would be appreciated.

Ben


PS. Here is a list of installed perl packages.
# rpm -qa | grep perl
perl-String-CRC32-1.4-2.fc6
perl-Crypt-DES-2.05-4.el5
perl-Compress-Zlib-1.42-1.fc6
perl-DateTime-Format-Mail-0.30-4.el5
perl-libwww-perl-5.805-1.1.1
perl-MIME-Lite-3.01-5.el5
nagios-plugins-perl-1.4.11-2.el5
perl-Config-IniFiles-2.39-6.el5
perl-Digest-SHA1-2.11-1.2.1
perl-Digest-HMAC-1.01-15
perl-File-RsyncP-0.68-1.c5
mod_perl-2.0.2-6.3.el5
perl-Params-Validate-0.88-3.el5
perl-URI-1.35-3
perl-Archive-Zip-1.16-1.2.1
perl-DateTime-0.41-1.el5
perl-DateTime-Format-W3CDTF-0.04-1.el5
perl-HTML-Parser-3.55-1.fc6
perl-XML-Parser-2.34-6.1.2.2.1
perl-Time-modules-2003.1126-4.el5.1
perl-MailTools-1.77-1.el5
perl-5.8.8-10.el5_2.3
perl-Net-SNMP-5.2.0-1.el5.1
perl-BSD-Resource-1.28-1.fc6.1
perl-Class-Singleton-1.03-3.el5
perl-HTML-Tagset-3.10-2.1.1
perl-XML-RSS-1.31-1.el5
perl-Geo-IP-1.28-3.el5
perl-TimeDate-1.16-5.el5

Ben wrote:
> For some time now i have been running BackupPC 3.1.0 on CentOS 5.1 
> x86_64 however after upgrading to CentOS 5.2 BackupPC will not start.
> 
> "sudo /etc/init.d/backuppc start" return OK but there is no
BackupPC
> processes.
> 
> This fails also.
> # sudo -u backuppc /usr/bin/BackupPC -d
> # echo $?
> 0
> 
> This succeeds, but of course does not fork.
> # sudo -u backuppc /usr/bin/BackupPC
> 
> So for some reason after the CentOS 5.2 upgrade it will not fork into 
> the background.
> 
> I have run the perl debugger over it and up until the fork everything is 
> fine.
> 
> Nothing appears in the LOG.
> 
> Any ideas would be appreciated.
> 
> Ben
> 
> 
> PS. Here is a list of installed perl packages.
> # rpm -qa | grep perl
> perl-String-CRC32-1.4-2.fc6
> perl-Crypt-DES-2.05-4.el5
> perl-Compress-Zlib-1.42-1.fc6
> perl-DateTime-Format-Mail-0.30-4.el5
> perl-libwww-perl-5.805-1.1.1
> perl-MIME-Lite-3.01-5.el5
> nagios-plugins-perl-1.4.11-2.el5
> perl-Config-IniFiles-2.39-6.el5
> perl-Digest-SHA1-2.11-1.2.1
> perl-Digest-HMAC-1.01-15
> perl-File-RsyncP-0.68-1.c5
> mod_perl-2.0.2-6.3.el5
> perl-Params-Validate-0.88-3.el5
> perl-URI-1.35-3
> perl-Archive-Zip-1.16-1.2.1
> perl-DateTime-0.41-1.el5
> perl-DateTime-Format-W3CDTF-0.04-1.el5
> perl-HTML-Parser-3.55-1.fc6
> perl-XML-Parser-2.34-6.1.2.2.1
> perl-Time-modules-2003.1126-4.el5.1
> perl-MailTools-1.77-1.el5
> perl-5.8.8-10.el5_2.3
> perl-Net-SNMP-5.2.0-1.el5.1
> perl-BSD-Resource-1.28-1.fc6.1
> perl-Class-Singleton-1.03-3.el5
> perl-HTML-Tagset-3.10-2.1.1
> perl-XML-RSS-1.31-1.el5
> perl-Geo-IP-1.28-3.el5
> perl-TimeDate-1.16-5.el5
I am running backuppc on 3 CentOS-5.2 machines (and several more on 
CentOS-4.6 machines).

I had no issues after upgrading to 5.2 on those machines.

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Johnny Hughes wrote:
> Ben wrote:
>> For some time now i have been running BackupPC 3.1.0 on CentOS 5.1 
>> x86_64 however after upgrading to CentOS 5.2 BackupPC will not start.
>>
>> "sudo /etc/init.d/backuppc start" return OK but there is no
BackupPC
>> processes.
>>
>> This fails also.
>> # sudo -u backuppc /usr/bin/BackupPC -d
>> # echo $?
>> 0
>>
>> This succeeds, but of course does not fork.
>> # sudo -u backuppc /usr/bin/BackupPC
>>
>> So for some reason after the CentOS 5.2 upgrade it will not fork into 
>> the background.
>>
>> I have run the perl debugger over it and up until the fork everything 
>> is fine.
>>
>> Nothing appears in the LOG.
>>
>> Any ideas would be appreciated.
>>
>> Ben
>
> I am running backuppc on 3 CentOS-5.2 machines (and several more on 
> CentOS-4.6 machines).
>
> I had no issues after upgrading to 5.2 on those machines.
Good to hear.

Are they i386 or x86_64?  Are they using 3.0 or 3.1?

Ben

Ben wrote:
> For some time now i have been running BackupPC 3.1.0 on CentOS 5.1 
> x86_64 however after upgrading to CentOS 5.2 BackupPC will not start.
>
> "sudo /etc/init.d/backuppc start" return OK but there is no
BackupPC
> processes.
>
> This fails also.
> # sudo -u backuppc /usr/bin/BackupPC -d
> # echo $?
> 0
>
> This succeeds, but of course does not fork.
> # sudo -u backuppc /usr/bin/BackupPC
>
> So for some reason after the CentOS 5.2 upgrade it will not fork into 
> the background.
>
> I have run the perl debugger over it and up until the fork everything 
> is fine.
>
> Nothing appears in the LOG.
>
With some help from the BackupPC list i have narrowed the problem down 
to the NSS config, I use LDAP to resolve users and groups.

In /etc/nsswitch.conf this is what is there and was there with CentOS 
5.1, with this config BackupPC will not background.
<snip>
passwd:     files ldap
shadow:     files ldap
group:      files ldap
<snip>

However, with this in nsswitch.conf the service will background.
<snip>
passwd:     files ldap
shadow:     files
group:      files ldap
<snip>

Apparently this has been seen to affect dhcpd too, but with the 
"services" nss database.

Any ideas on this?  What has changed between 5.1 and 5.2?

Ben

Johnny Hughes wrote:
> Ben wrote:
>> Ben wrote:
>>> For some time now i have been running BackupPC 3.1.0 on CentOS 5.1 
>>> x86_64 however after upgrading to CentOS 5.2 BackupPC will not
start.
>>>
>>> "sudo /etc/init.d/backuppc start" return OK but there is
no BackupPC
>>> processes.
>>>
>>> This fails also.
>>> # sudo -u backuppc /usr/bin/BackupPC -d
>>> # echo $?
>>> 0
>>>
>>> This succeeds, but of course does not fork.
>>> # sudo -u backuppc /usr/bin/BackupPC
>>>
>>> So for some reason after the CentOS 5.2 upgrade it will not fork 
>>> into the background.
>>>
>>> I have run the perl debugger over it and up until the fork 
>>> everything is fine.
>>>
>>> Nothing appears in the LOG.
>>>
>> With some help from the BackupPC list i have narrowed the problem 
>> down to the NSS config, I use LDAP to resolve users and groups.
>>
>> In /etc/nsswitch.conf this is what is there and was there with CentOS 
>> 5.1, with this config BackupPC will not background.
>> <snip>
>> passwd:     files ldap
>> shadow:     files ldap
>> group:      files ldap
>> <snip>
>>
>> However, with this in nsswitch.conf the service will background.
>> <snip>
>> passwd:     files ldap
>> shadow:     files
>> group:      files ldap
>> <snip>
>>
>> Apparently this has been seen to affect dhcpd too, but with the 
>> "services" nss database.
>>
>> Any ideas on this?  What has changed between 5.1 and 5.2?
>
> Look in the release notes for C5 (search for nss_ldap):
>
> http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.2
>
> Try my fixed RPM here:
>
> http://people.centos.org/hughesjr/nss_ldap/5/
>
> Upstream bugzilla entry here:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=448014
Thanks for the pointer.

Is your RPM any different to the one the Testing Repo as documented in 
the release notes?

Ben

Johnny Hughes wrote:
> Ben wrote:
>> Johnny Hughes wrote:
>>> Ben wrote:
>>>> Ben wrote:
>>>>> For some time now i have been running BackupPC 3.1.0 on
CentOS 5.1
>>>>> x86_64 however after upgrading to CentOS 5.2 BackupPC will
not start.
>>>>>
>>>>> "sudo /etc/init.d/backuppc start" return OK but
there is no
>>>>> BackupPC processes.
>>>>>
>>>>> This fails also.
>>>>> # sudo -u backuppc /usr/bin/BackupPC -d
>>>>> # echo $?
>>>>> 0
>>>>>
>>>>> This succeeds, but of course does not fork.
>>>>> # sudo -u backuppc /usr/bin/BackupPC
>>>>>
>>>>> So for some reason after the CentOS 5.2 upgrade it will not
fork
>>>>> into the background.
>>>>>
>>>>> I have run the perl debugger over it and up until the fork 
>>>>> everything is fine.
>>>>>
>>>>> Nothing appears in the LOG.
>>>>>
>>>> With some help from the BackupPC list i have narrowed the
problem
>>>> down to the NSS config, I use LDAP to resolve users and groups.
>>>>
>>>> In /etc/nsswitch.conf this is what is there and was there with 
>>>> CentOS 5.1, with this config BackupPC will not background.
>>>> <snip>
>>>> passwd:     files ldap
>>>> shadow:     files ldap
>>>> group:      files ldap
>>>> <snip>
>>>>
>>>> However, with this in nsswitch.conf the service will
background.
>>>> <snip>
>>>> passwd:     files ldap
>>>> shadow:     files
>>>> group:      files ldap
>>>> <snip>
>>>>
>>>> Apparently this has been seen to affect dhcpd too, but with the
>>>> "services" nss database.
>>>>
>>>> Any ideas on this?  What has changed between 5.1 and 5.2?
>>>
>>> Look in the release notes for C5 (search for nss_ldap):
>>>
>>> http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.2
>>>
>>> Try my fixed RPM here:
>>>
>>> http://people.centos.org/hughesjr/nss_ldap/5/
>>>
>>> Upstream bugzilla entry here:
>>>
>>> https://bugzilla.redhat.com/show_bug.cgi?id=448014
>>
>> Thanks for the pointer.
>>
>> Is your RPM any different to the one the Testing Repo as documented 
>> in the release notes?
>
> It is the same RPM, just in a different place so I can link it from 
> the RH bugzilla entry too.
Thanks Johnny, i went and applied the RPM from testing and all works as 
expected.

Thanks for your help.

Ben

--On Friday, July 04, 2008 9:21 AM +1000 Ben 
<abnormaliti at clivepeeters.com.au> wrote:
> For some time now i have been running BackupPC 3.1.0 on CentOS 5.1 x86_64
> however after upgrading to CentOS 5.2 BackupPC will not start.
What RPM are you using for BackupPC?