[ClusterLabs] Issue with DRBD + a systemd resource

[Julien Semaan]

Hi Jan,

Good clarification on my ugly systemd unit fix, wrote it a bit too fast 
and was so happy to finally track that one down.

Good to know the bug will get notified through this channel, I'd be 
happy to provide any details to the maintainers if necessary.

Cheers!

-- 
Julien Semaan
jsemaan at inverse.ca   ::  +1 (866) 353-6153 *155  ::www.inverse.ca
Inverse inc. :: Leaders behind SOGo (www.sogo.nu) and PacketFence (www.packetfence.org)



On 2017-12-14 11:25 AM, Jan Pokorný wrote:
> On 14/12/17 10:49 -0500, Julien Semaan wrote:
>> Great success!
>>
>> Adding the following line to /usr/lib/systemd/system/pacemaker.service did
>> it:
>> After=dbus.service
> Note, this is not a proper way for overriding the systemd unit files,
> which is rather along the lines:
> - make a copy to /etc/systemd/system directory
> - edit this copy
> - issue systemctl daemon-reload so that this is taken into at all
>    (which also happens automatically after reboot)
>
> Otherwise your changes are lost say after reinstalling pacemaker.
>
> (FTR, in the same vein, I am proposing similar scheme for resource
> agents: https://github.com/ClusterLabs/OCF-spec/issues/5)
>
>> Now, the question is, should the unit file shipped in the RPM be adjusted
>> (currently using CentOS 7), if so, is this the best place to get the message
>> going, or should I post this to a specific BTS ?
> Pacemaker maintainers are reading this so will take care of this
> for upstream, you may then want to give a heads up to particular
> downstream, giving them the right pointers.
>
> Anyway, the change is seemingly straightfoward, but few things
> should be answered/investigated first:
> - After=dbus.service or rather After=dbus.socket (or both)?
> - mere After=, or combined with other relationship modifying
>    directives
>    - Wants=, Requires= ... what's the expected behaviour when
>      DBus crashes (or is it merely hypothetical because then
>      whole systemd is in trouble then?)
>    - should DBus reloads somehow affect pacemaker?
> - (insert some other questions that are not currently
>    coming to mind of rather inexpert person)
>
>
>
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