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Daniel P. Berrangé
ec7e31ed32
To facilitate upgrades from earlier versions of libvirt which did not use socket activation for libvirtd, we want to allow the libvirtd socket units to be disabled (masked). This can only be supported if we use the weaker Wants statement instead of Requires. Reviewed-by: Ján Tomko <jtomko@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
54 lines
1.7 KiB
Plaintext
54 lines
1.7 KiB
Plaintext
[Unit]
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Description=Virtualization daemon
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Requires=virtlogd.socket
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Requires=virtlockd.socket
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# Use Wants instead of Requires so that users
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# can disable these three .socket units to revert
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# to a traditional non-activation deployment setup
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Wants=libvirtd.socket
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Wants=libvirtd-ro.socket
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Wants=libvirtd-admin.socket
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Wants=systemd-machined.service
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Before=libvirt-guests.service
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After=network.target
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After=dbus.service
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After=iscsid.service
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After=apparmor.service
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After=local-fs.target
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After=remote-fs.target
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After=systemd-logind.service
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After=systemd-machined.service
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After=xencommons.service
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Conflicts=xendomains.service
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Documentation=man:libvirtd(8)
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Documentation=https://libvirt.org
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[Service]
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Type=notify
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EnvironmentFile=-@sysconfdir@/sysconfig/libvirtd
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# libvirtd.service is set to run on boot so that autostart of
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# VMs can be performed. We don't want it to stick around if
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# unused though, so we set a timeout. The socket activation
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# then ensures it gets started again if anything needs it
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ExecStart=@sbindir@/libvirtd --timeout 120 $LIBVIRTD_ARGS
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ExecReload=/bin/kill -HUP $MAINPID
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KillMode=process
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Restart=on-failure
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# At least 1 FD per guest, often 2 (eg qemu monitor + qemu agent).
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# eg if we want to support 4096 guests, we'll typically need 8192 FDs
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# If changing this, also consider virtlogd.service & virtlockd.service
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# limits which are also related to number of guests
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LimitNOFILE=8192
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# The cgroups pids controller can limit the number of tasks started by
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# the daemon, which can limit the number of domains for some hypervisors.
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# A conservative default of 8 tasks per guest results in a TasksMax of
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# 32k to support 4096 guests.
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TasksMax=32768
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[Install]
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WantedBy=multi-user.target
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Also=virtlockd.socket
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Also=virtlogd.socket
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Also=libvirtd.socket
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Also=libvirtd-ro.socket
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