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A unit with StandardOutput=journal (the default) will get its stdout/stderr sockets disconnected when journald stops, as the file descriptors on journald's side are not preserved (it works on restart, as the FD Store keeps them open during restarts). Set FileDescriptorStorePreserve=yes so that the journal FD's stay open during a soft reboot, and applications don't get broken stdout/stderr.
72 lines
2.8 KiB
SYSTEMD
72 lines
2.8 KiB
SYSTEMD
# SPDX-License-Identifier: LGPL-2.1-or-later
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#
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# This file is part of systemd.
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#
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# systemd is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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[Unit]
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Description=Journal Service
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Documentation=man:systemd-journald.service(8) man:journald.conf(5)
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DefaultDependencies=no
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Requires=systemd-journald.socket
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After=systemd-journald.socket systemd-journald-dev-log.socket systemd-journald-audit.socket syslog.socket
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Before=sysinit.target
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# To avoid journald SIGKILLed during soft-reboot and corrupting journals.
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# See https://github.com/systemd/systemd/issues/30195
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# Note, typically soft-reboot.target will be never reached,
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# and systemd-soft-reboot.service will trigger soft-reboot.
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# Hence, this must be stopped before systemd-soft-reboot.service.
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Before=soft-reboot.target systemd-soft-reboot.service
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Conflicts=soft-reboot.target
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# Mount and swap units need the journal socket units. If they were removed by
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# an isolate request the mount and swap units would be removed too, hence let's
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# exclude systemd-journald and its sockets from isolate requests.
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IgnoreOnIsolate=yes
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[Service]
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DeviceAllow=char-* rw
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ExecStart={{LIBEXECDIR}}/systemd-journald
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FileDescriptorStoreMax=4224
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# Ensure services using StandardOutput=journal do not break when journald is stopped
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FileDescriptorStorePreserve=yes
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ImportCredential=journal.*
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IPAddressDeny=any
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LockPersonality=yes
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MemoryDenyWriteExecute=yes
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NoNewPrivileges=yes
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OOMScoreAdjust=-250
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ProtectClock=yes
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Restart=always
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RestartSec=0
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RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_VSOCK AF_INET AF_INET6
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RestrictNamespaces=yes
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RestrictRealtime=yes
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RestrictSUIDSGID=yes
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RuntimeDirectory=systemd/journal
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RuntimeDirectoryPreserve=yes
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# Audit socket is not listed here because this unit can be turned off. However
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# the link between the socket and the service units is still created thanks to
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# the 'Service=' setting specified in the socket unit.
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Sockets=systemd-journald.socket systemd-journald-dev-log.socket
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StandardOutput=null
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SystemCallArchitectures=native
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SystemCallErrorNumber=EPERM
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SystemCallFilter=@system-service
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Type=notify
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PassEnvironment=TERM
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{{SERVICE_WATCHDOG}}
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# In case you're wondering why CAP_SYS_PTRACE is needed, access to
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# /proc/<pid>/exe requires this capability. Thus if this capability is missing
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# the _EXE=/OBJECT_EXE= fields will be missing from the journal entries.
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CapabilityBoundingSet=CAP_SYS_ADMIN CAP_DAC_OVERRIDE CAP_SYS_PTRACE CAP_SYSLOG CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_CHOWN CAP_DAC_READ_SEARCH CAP_FOWNER CAP_SETUID CAP_SETGID CAP_MAC_OVERRIDE
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# If there are many split up journal files we need a lot of fds to access them
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# all in parallel.
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LimitNOFILE={{HIGH_RLIMIT_NOFILE}}
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