2021-07-07 20:15:16 +08:00
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[Unit]
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Description=listmonk mailing list and newsletter manager (%I)
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ConditionPathExists=/etc/listmonk/%i.toml
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Wants=network.target
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# The PostgreSQL database may not be on the same host but if it
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# is listmonk should wait for it to start up.
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After=postgresql.service
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[Service]
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Type=simple
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EnvironmentFile=-/etc/default/listmonk
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EnvironmentFile=-/etc/default/listmonk-%i
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ExecStartPre=/usr/bin/mkdir -p "${HOME}/uploads"
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ExecStartPre=/usr/bin/listmonk --config /etc/listmonk/%i.toml --upgrade --yes
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ExecStart=/usr/bin/listmonk --config /etc/listmonk/%i.toml $SYSTEMD_LISTMONK_ARGS
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Restart=on-failure
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# Create dynamic users for listmonk service instances
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# but create a state directory for uploads in /var/lib/private/%i.
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DynamicUser=True
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StateDirectory=listmonk-%i
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Environment=HOME=%S/listmonk-%i
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WorkingDirectory=%S/listmonk-%i
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# Use systemd’s ability to disable security-sensitive features
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# that listmonk does not explicitly need.
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# NoNewPrivileges should be enabled by DynamicUser=yes but systemd-analyze
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# still recommended to explicitly enable it.
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NoNewPrivileges=True
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# listmonk doesn’t need any capabilities as defined by the linux kernel
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# see: https://man7.org/linux/man-pages/man7/capabilities.7.html
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CapabilityBoundingSet=
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# listmonk only executes native code with no need for any other ABIs.
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SystemCallArchitectures=native
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# Only enable a reasonable set of system calls.
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# see: https://www.freedesktop.org/software/systemd/man/systemd.exec.html#SystemCallFilter=
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SystemCallFilter=@system-service
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2023-07-12 22:12:54 +08:00
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SystemCallFilter=~@privileged
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2021-07-07 20:15:16 +08:00
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# ProtectSystem=strict, which is implied by DynamicUser=True, already disabled write calls
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# to the entire filesystem hierarchy, leaving only /dev/, /proc/, and /sys/ writable.
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# listmonk doesn’t need access to those so might as well disable them.
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PrivateDevices=True
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ProtectControlGroups=True
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ProtectKernelTunables=True
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# Make /home/, /root/, and /run/user/ inaccessible.
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ProtectHome=True
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# listmonk doesn’t handle any specific device nodes.
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DeviceAllow=False
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# listmonk doesn’t make use of linux namespaces.
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RestrictNamespaces=True
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# listmonk doesn’t need realtime scheduling.
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RestrictRealtime=True
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# Make sure files created by listmonk are only readable by itself and
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# others in the listmonk system group.
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UMask=0027
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# Disable memory mappings that are both writable and executable.
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MemoryDenyWriteExecute=True
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# listmonk doesn’t make use of linux personality switching.
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LockPersonality=True
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# listmonk only needs to support the IPv4 and IPv6 address families.
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RestrictAddressFamilies=AF_INET AF_INET6
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# listmonk doesn’t need to load any linux kernel modules.
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ProtectKernelModules=True
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# Create a sandboxed environment where the system users are mapped to a
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# service-specific linux kernel namespace.
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PrivateUsers=True
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[Install]
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WantedBy=multi-user.target
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