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systemd-stable/units/systemd-oomd.service.in

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license: LGPL-2.1+ -> LGPL-2.1-or-later
2020-11-09 07:23:58 +03:00
# SPDX-License-Identifier: LGPL-2.1-or-later
systemd-oomd: service files
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#
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
[Unit]
Description=Userspace Out-Of-Memory (OOM) Killer
Documentation=man:systemd-oomd.service(8)
DefaultDependencies=no
Before=multi-user.target shutdown.target
Conflicts=shutdown.target
units: add Conditions for systemd-oomd.service Prompted by https://bugzilla.redhat.com/show_bug.cgi?id=1927148 and https://bugzilla.redhat.com/show_bug.cgi?id=1931181. Adds condition check for cgroups v2 and PSI, which systemd-oomd cannot start without.
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ConditionControlGroupController=v2
unit: systemd-oomd.service requires cgroup memory controller
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ConditionControlGroupController=memory
units: add Conditions for systemd-oomd.service Prompted by https://bugzilla.redhat.com/show_bug.cgi?id=1927148 and https://bugzilla.redhat.com/show_bug.cgi?id=1931181. Adds condition check for cgroups v2 and PSI, which systemd-oomd cannot start without.
2021-02-23 11:09:10 +03:00
ConditionPathExists=/proc/pressure/cpu
ConditionPathExists=/proc/pressure/io
ConditionPathExists=/proc/pressure/memory
oom: Add support for user unit ManagedOOM property updates Compared to PID1 where systemd-oomd has to be the client to PID1 because PID1 is a more privileged process than systemd-oomd, systemd-oomd is the more privileged process compared to a user manager so we have user managers be the client whereas systemd-oomd is now the server. The same varlink protocol is used between user managers and systemd-oomd to deliver ManagedOOM property updates. systemd-oomd now sets up a varlink server that user managers connect to to send ManagedOOM property updates. We also add extra validation to make sure that non-root senders don't send updates for cgroups they don't own. The integration test was extended to repeat the chill/bloat test using a user manager instead of PID1.
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Requires=systemd-oomd.socket
After=systemd-oomd.socket
systemd-oomd: service files
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[Service]
AmbientCapabilities=CAP_KILL CAP_DAC_OVERRIDE
BusName=org.freedesktop.oom1
CapabilityBoundingSet=CAP_KILL CAP_DAC_OVERRIDE
meson: use jinja2 for unit templates We don't need two (and half) templating systems anymore, yay! I'm keeping the changes minimal, to make the diff manageable. Some enhancements due to a better templating system might be possible in the future. For handling of '## ' — see the next commit.
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ExecStart={{ROOTLIBEXECDIR}}/systemd-oomd
systemd-oomd: service files
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IPAddressDeny=any
LockPersonality=yes
MemoryDenyWriteExecute=yes
# Reserve some minimum amount of memory so that systemd-oomd can continue to
# run in resource starved scenarios.
MemoryMin=64M
MemoryLow=64M
NoNewPrivileges=yes
OOMScoreAdjust=-900
PrivateDevices=yes
PrivateTmp=yes
ProtectClock=yes
ProtectHome=yes
ProtectHostname=yes
ProtectKernelLogs=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes
ProtectSystem=strict
Restart=on-failure
RestrictAddressFamilies=AF_UNIX
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes
SystemCallArchitectures=native
SystemCallErrorNumber=EPERM
SystemCallFilter=@system-service
Type=notify
User=systemd-oom
meson: use jinja2 for unit templates We don't need two (and half) templating systems anymore, yay! I'm keeping the changes minimal, to make the diff manageable. Some enhancements due to a better templating system might be possible in the future. For handling of '## ' — see the next commit.
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{{SERVICE_WATCHDOG}}
systemd-oomd: service files
2020-06-19 21:41:03 +03:00
[Install]
WantedBy=multi-user.target
Alias=dbus-org.freedesktop.oom1.service
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