Il 28/Set/2016 21:09, "Gervais de Montbrun" <gerv...@demontbrun.com> ha scritto: > > Hi Gianluca, > > Instead of editing the system's built in systemd configuration, you can do the following... > > Create a file called /etc/systemd/system/ovirt-ha-broker.service > >> # My custom ovirt-ha-broker.service config that ensures NFS starts before ovirt-ha-broker.service >> # thanks Gervais for this tip! :-) >> >> .include /usr/lib/systemd/system/ovirt-ha-broker.service >> >> [Unit] >> After=nfs-server.service > > > Then disable and enable ovirt-ha-broker.service (systemctl disable ovirt-ha-broker.service ; systemctl enable ovirt-ha-broker.service) and you should see that it is using your customized systemd unit definition. You can see that systemd is using your file by running systemctl status ovirt-ha-broker.service. You'll see something like "Loaded: loaded (/etc/systemd/system/ovirt-ha-broker.service;" in the output. > > Your file will survive updates and therefore always wait for nfs to start prior to starting. You can do the same for your other customizations. > > Cheers, > Gervais > > > >> On Sep 28, 2016, at 1:31 PM, Gianluca Cecchi <gianluca.cec...@gmail.com> wrote: >> >> On Sun, Sep 4, 2016 at 10:54 AM, Yedidyah Bar David <d...@redhat.com> wrote: >>> >>> On Sat, Sep 3, 2016 at 1:18 PM, Gianluca Cecchi >>> <gianluca.cec...@gmail.com> wrote: >>> > Hello, >>> > how do the two modes apply in case of single host? >>> > During an upgrade phase, after having upgraded the self hosted engine and >>> > leaving global maintenance and having checked all is ok, what is the correct >>> > mode then to put host if I want finally to update it too? >>> >>> The docs say to put hosts to maintenance from the engine before upgrading them. >>> >>> This is (also) so that VMs on them are migrated away to other hosts. >>> >>> With a single host, you have no other hosts to migrate VMs to. >>> >>> So you should do something like this: >>> >>> 1. Set global maintenance (because you are going to take down the >>> engine and its vm) >>> 2. Shutdown all other VMs >>> 3. Shutdown engine vm from itself >>> At this point, you should be able to simply stop HA services. But it >>> might be cleaner to first set local maintenance. Not sure but perhaps >>> this might be required for vdsm. So: >>> 4. Set local maintenance >>> 5. Stop HA services. If setting local maintenance didn't work, perhaps >>> better stop also vdsm services. This stop should obviously happen >>> automatically by yum/rpm, but perhaps better do this manually to see >>> that it worked. >>> 6. yum (or dnf) update stuff. >>> 7. Start HA services >>> 8. Check status. I think you'll see that both local and global maint >>> are still set. >>> 9. Set maintenance to none >>> 10. Check status again - I think that after some time HA will decide >>> to start engine vm and should succeed. >>> 11. Start all other VMs. >>> >>> Didn't try this myself. >>> >>> Best, >>> -- >>> Didi >> >> >> Hello Didi, >> I would like to leverage the update I have to do on 2 small different lab environments to crosscheck the steps suggested. >> They are both single host environments with self hosted engine. >> One is 4.0.2 and the other is 4.0.3. Both on CentoS 7.2 >> I plan to migrate to the just released 4.0.4 >> >> One note: in both environments the storage is NFS and is provided by the host itself, so a corner case (for all hosted_storage domain, main data domain and iso storage domain). >> I customized the init scripts, basically for start phase of the server and to keep in count of the NFS service, but probably something has to be done for stop too? >> >> 1) In /usr/lib/systemd/system/ovirt-ha-broker.service >> >> added in section [Unit] >> >> After=nfs-server.service >> >> The file is overwritten at update so one has to keep in mind this >> >> 2) also in vdsmd.service changed >> from: >> After=multipathd.service libvirtd.service iscsid.service rpcbind.service \ >> supervdsmd.service sanlock.service vdsm-network.service >> >> to: >> After=multipathd.service libvirtd.service iscsid.service rpcbind.service \ >> supervdsmd.service sanlock.service vdsm-network.service \ >> nfs-server.service >> >> Do you think any order setup I have to put in place related to NFS service and oVirt services stop? >> >> _______________________________________________ >> Users mailing list >> Users@ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users > >
Nice! I'm going to try and see. Any particular dependency I should add for shutdown order due to the fact that my host is also the NFS server providing data stores? Do I need to set up nfs stop only after a particular ovirt related service? Thanks, Gianluca -- IMPORTANT! This message has been scanned for viruses and phishing links. However, it is your responsibility to evaluate the links and attachments you choose to click. If you are uncertain, we always try to help. Greetings helpd...@actnet.se -- IMPORTANT! This message has been scanned for viruses and phishing links. However, it is your responsibility to evaluate the links and attachments you choose to click. If you are uncertain, we always try to help. Greetings helpd...@actnet.se
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