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https://github.com/ceph/ceph
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d88c834ea4
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>
42 lines
1.1 KiB
SYSTEMD
42 lines
1.1 KiB
SYSTEMD
[Unit]
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Description=Ceph cluster monitor daemon
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PartOf=ceph-mon.target
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# According to:
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# http://www.freedesktop.org/wiki/Software/systemd/NetworkTarget
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# these can be removed once ceph-mon will dynamically change network
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# configuration.
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After=network-online.target local-fs.target time-sync.target
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Before=remote-fs-pre.target ceph-mon.target
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Wants=network-online.target local-fs.target time-sync.target remote-fs-pre.target ceph-mon.target
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[Service]
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Environment=CLUSTER=ceph
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EnvironmentFile=-@SYSTEMD_ENV_FILE@
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ExecReload=/bin/kill -HUP $MAINPID
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ExecStart=/usr/bin/ceph-mon -f --cluster ${CLUSTER} --id %i --setuser ceph --setgroup ceph
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LimitNOFILE=1048576
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LimitNPROC=1048576
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LockPersonality=true
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MemoryDenyWriteExecute=true
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# Need NewPrivileges via `sudo smartctl`
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NoNewPrivileges=false
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PrivateDevices=yes
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PrivateTmp=true
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ProtectClock=true
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ProtectControlGroups=true
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ProtectHome=true
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ProtectHostname=true
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ProtectKernelLogs=true
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ProtectKernelModules=true
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ProtectKernelTunables=true
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ProtectSystem=full
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Restart=on-failure
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RestartSec=10
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RestrictSUIDSGID=true
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StartLimitBurst=5
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StartLimitInterval=30min
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TasksMax=infinity
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[Install]
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WantedBy=ceph-mon.target
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