libvirt/src/logging/virtlogd.service.in

[Unit]
Description=Virtual machine log manager
Requires=virtlogd.socket
Before=libvirtd.service
Documentation=man:virtlogd(8)
Documentation=http://libvirt.org

[Service]
EnvironmentFile=-/etc/sysconfig/virtlogd
ExecStart=@sbindir@/virtlogd $VIRTLOGD_ARGS
ExecReload=/bin/kill -USR1 $MAINPID
# Loosing the logs is a really bad thing that will
# cause the machine to be fenced (rebooted), so make
# sure we discourage OOM killer
OOMScoreAdjust=-900
# Need to have at least one file open per guest (eg QEMU
# stdio log), but might be more (eg serial console logs)
# libvirtd.service written to expect 4096 guests, so if we
# guess at 2 log files per guest here (stdio + 1 serial):
LimitNOFILE=8192

[Install]
Also=virtlogd.socket
Import stripped down virtlockd code as basis of virtlogd Copy the virtlockd codebase across to form the initial virlogd code. Simple search & replace of s/lock/log/ and gut the remote protocol & dispatcher. This gives us a daemon that starts up and listens for connections, but does nothing with them. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> 2015-02-09 16:35:05 +00:00			`[Unit]`
			`Description=Virtual machine log manager`
			`Requires=virtlogd.socket`
virtlogd.socket: Tie lifecycle to libvirtd.service We already guarantee that virtlogd.socket is enabled/disabled along with libvirtd.service, but if libvirtd.service has just been installed and is started before rebooting, then virtlogd.socket will not be running and guest startup will fail. Add Requires=virtlogd.socket to libvirtd.service to make sure virtlogd.socket is always started along with libvirtd.service, and add Before=libvirtd.service to both virtlogd.socket and virtlogd.service so that virtlogd never disappears before libvirtd has exited. Also add PartOf=libvirtd.service to both virtlogd.socket and virtlogd.service, so that virtlogd can be shut down when not needed. Resolves: https://bugzilla.redhat.com/1372576 2016-09-06 13:16:24 +00:00			`Before=libvirtd.service`
Import stripped down virtlockd code as basis of virtlogd Copy the virtlockd codebase across to form the initial virlogd code. Simple search & replace of s/lock/log/ and gut the remote protocol & dispatcher. This gives us a daemon that starts up and listens for connections, but does nothing with them. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> 2015-02-09 16:35:05 +00:00			`Documentation=man:virtlogd(8)`
			`Documentation=http://libvirt.org`

			`[Service]`
			`EnvironmentFile=-/etc/sysconfig/virtlogd`
			`ExecStart=@sbindir@/virtlogd $VIRTLOGD_ARGS`
			`ExecReload=/bin/kill -USR1 $MAINPID`
			`# Loosing the logs is a really bad thing that will`
			`# cause the machine to be fenced (rebooted), so make`
			`# sure we discourage OOM killer`
			`OOMScoreAdjust=-900`
Increase default file handle limits for daemons Linux still defaults to a 1024 open file handle limit. This causes scalability problems for libvirtd / virtlockd / virtlogd on large hosts which might want > 1024 guest to be running. In fact if each guest needs > 1 FD, we can't even get to 500 guests. This is not good enough when we see machines with 100's of physical cores and TBs of RAM. In comparison to other memory requirements of libvirtd & related daemons, the resource usage associated with open file handles is essentially line noise. It is thus reasonable to increase the limits unconditionally for all installs. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> 2017-03-15 16:51:51 +00:00			`# Need to have at least one file open per guest (eg QEMU`
			`# stdio log), but might be more (eg serial console logs)`
			`# libvirtd.service written to expect 4096 guests, so if we`
			`# guess at 2 log files per guest here (stdio + 1 serial):`
			`LimitNOFILE=8192`
Import stripped down virtlockd code as basis of virtlogd Copy the virtlockd codebase across to form the initial virlogd code. Simple search & replace of s/lock/log/ and gut the remote protocol & dispatcher. This gives us a daemon that starts up and listens for connections, but does nothing with them. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> 2015-02-09 16:35:05 +00:00
			`[Install]`
			`Also=virtlogd.socket`