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ceph/systemd/ceph.target

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SYSTEMD
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better systemd support Added ceph.target Made ceph-mds, ceph-mon, ceph-osd services part of ceph.target Made ceph-mds, ceph-mon, ceph-osd services require partitions to be available. Added ceph init script with sysV like behaviour. Provided by Tim Serong tserong@suse.com and Owen Synge osynge@suse.com Signed-off-by: Owen Synge <osynge@suse.com>
2014-12-01 13:32:48 +00:00
[Unit]
Description=ceph target allowing to start/stop all ceph*@.service instances at once
systemd: Support Graceful Reboot for AIO Node Ceph AIO installation with single/multiple node is not friendly for loopback mount, especially always get deadlock issue during graceful system reboot. We already have `rbdmap.service` with graceful system reboot friendly as below: [Unit] After=network-online.target Before=remote-fs-pre.target Wants=network-online.target remote-fs-pre.target [Service] ExecStart=/usr/bin/rbdmap map ExecReload=/usr/bin/rbdmap map ExecStop=/usr/bin/rbdmap unmap-all This PR introduce: - `ceph-mon.target`: Ensure startup after `network-online.target` and before `remote-fs-pre.target` - `ceph-*.target`: Ensure startup after `ceph-mon.target` and before `remote-fs-pre.target` - `rbdmap.service`: Once all `_netdev` get unmount by `remote-fs.target`, ensure unmap all RBD BEFORE any Ceph components under `ceph.target` get stopped during shutdown The logic is concept proof by <https://github.com/alvistack/ansible-role-ceph_common/tree/develop>; also works as expected with Ceph + Kubernetes deployment by <https://github.com/alvistack/ansible-collection-kubernetes/tree/develop>. No more deadlock happened during graceful system reboot, both AIO single/multiple no de with loopback mount. Also see: - <https://github.com/ceph/ceph/pull/36776> - <https://github.com/etcd-io/etcd/pull/12259> - <https://github.com/cri-o/cri-o/pull/4128> - <https://github.com/kubernetes/release/pull/1504> Fixes: https://tracker.ceph.com/issues/47528 Signed-off-by: Wong Hoi Sing Edison <hswong3i@gmail.com>
2020-08-25 04:16:54 +00:00
better systemd support Added ceph.target Made ceph-mds, ceph-mon, ceph-osd services part of ceph.target Made ceph-mds, ceph-mon, ceph-osd services require partitions to be available. Added ceph init script with sysV like behaviour. Provided by Tim Serong tserong@suse.com and Owen Synge osynge@suse.com Signed-off-by: Owen Synge <osynge@suse.com>
2014-12-01 13:32:48 +00:00
[Install]
WantedBy=multi-user.target