/lib/systemd/system/virtlogd.service is in libvirt-daemon-system 4.0.0-1ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | [Unit]
Description=Virtual machine log manager
Requires=virtlogd.socket
Before=libvirtd.service
Documentation=man:virtlogd(8)
Documentation=https://libvirt.org
[Service]
EnvironmentFile=-/etc/default/virtlogd
ExecStart=/usr/sbin/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)
# A common case is OpenStack which often has up to 4 file
# handles per guest.
# libvirtd.service written to expect 4096 guests, so if we
# guess at 4 files per guest here that is 16k:
LimitNOFILE=16384
[Install]
Also=virtlogd.socket
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