mirror of
https://github.com/hanzomsg/nats-server.git
synced 2026-10-30 20:27:34 +00:00
Phil PennockandNeil Twigg
9670545524
For the example hardened systemd file, which is derived from config files which Synadia uses in production, add more examples: * Show setting GOMEMLIMIT env var + but also nudge towards using the external environment file for it * Use an external environment config file if it exists * Show mount-point dependency for JetStream * Configure automatic restarts * Show using InaccessiblePaths to lock down FS access even further * Setup a service alias of simply 'nats'.
85 lines
2.1 KiB
Desktop File
85 lines
2.1 KiB
Desktop File
[Unit]
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Description=NATS Server
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After=network-online.target ntp.service
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# If you use a dedicated filesystem for JetStream data, then you might use something like:
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# ConditionPathIsMountPoint=/srv/jetstream
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# See also Service.ReadWritePaths
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[Service]
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Type=simple
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EnvironmentFile=-/etc/default/nats-server
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ExecStart=/usr/sbin/nats-server -c /etc/nats-server.conf
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ExecReload=/bin/kill -s HUP $MAINPID
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ExecStop=/bin/kill -s SIGINT $MAINPID
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User=nats
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Group=nats
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Restart=always
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RestartSec=5
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# The nats-server uses SIGUSR2 to trigger using Lame Duck Mode (LDM) shutdown
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KillSignal=SIGUSR2
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# You might want to adjust TimeoutStopSec too.
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# Capacity Limits
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# JetStream requires 2 FDs open per stream.
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LimitNOFILE=800000
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# Environment=GOMEMLIMIT=12GiB
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# You might find it better to set GOMEMLIMIT via /etc/default/nats-server,
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# so that you can change limits without needing a systemd daemon-reload.
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# Hardening
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CapabilityBoundingSet=
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LockPersonality=true
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MemoryDenyWriteExecute=true
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NoNewPrivileges=true
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PrivateDevices=true
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PrivateTmp=true
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PrivateUsers=true
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ProcSubset=pid
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ProtectClock=true
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ProtectControlGroups=true
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ProtectHome=true
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ProtectHostname=true
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ProtectKernelLogs=true
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ProtectKernelModules=true
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ProtectKernelTunables=true
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ProtectSystem=strict
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ReadOnlyPaths=
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RestrictAddressFamilies=AF_INET AF_INET6
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RestrictNamespaces=true
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RestrictRealtime=true
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RestrictSUIDSGID=true
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SystemCallFilter=@system-service ~@privileged ~@resources
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UMask=0077
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# Consider locking down all areas of /etc which hold machine identity keys, etc
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InaccessiblePaths=/etc/ssh
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# If you have systemd >= 247
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ProtectProc=invisible
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# If you have systemd >= 248
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PrivateIPC=true
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# Optional: writable directory for JetStream.
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# See also: Unit.ConditionPathIsMountPoint
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ReadWritePaths=/var/lib/nats
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# Optional: resource control.
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# Replace weights by values that make sense for your situation.
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# For a list of all options see:
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# https://www.freedesktop.org/software/systemd/man/systemd.resource-control.html
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#CPUAccounting=true
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#CPUWeight=100 # of 10000
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#IOAccounting=true
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#IOWeight=100 # of 10000
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#MemoryAccounting=true
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#MemoryMax=1GB
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#IPAccounting=true
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[Install]
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WantedBy=multi-user.target
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Alias=nats.service
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