2017-04-21 00:04:57 +00:00
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[Unit]
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Description=Caddy HTTP/2 web server
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Documentation=https://caddyserver.com/docs
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After=network-online.target
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Wants=network-online.target systemd-networkd-wait-online.service
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[Service]
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2017-04-21 18:28:55 +00:00
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# Restart on crash (bad signal), but not on 'clean' failure (error exit code)
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# Allow up to 3 restarts within 10 seconds
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# (it's unlikely that a user or properly-running script will do this)
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2017-04-21 00:04:57 +00:00
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Restart=on-abnormal
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StartLimitInterval=10
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StartLimitBurst=3
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2017-04-21 18:28:55 +00:00
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# User and group the process will run as
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# (www-data is the de facto standard on most systems)
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2017-04-21 00:04:57 +00:00
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User=www-data
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Group=www-data
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2017-04-21 18:28:55 +00:00
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# Letsencrypt-issued certificates will be written to this directory.
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2017-04-21 00:04:57 +00:00
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Environment=CADDYPATH=/etc/ssl/caddy
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2017-04-21 18:28:55 +00:00
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# Always set "-root" to something safe in case it gets forgotten in the Caddyfile.
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2017-04-21 00:04:57 +00:00
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WorkingDirectory=/etc/ssl/caddy
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ExecStart=/usr/local/bin/caddy -log stdout -agree=true -conf=/etc/caddy/Caddyfile -root=/var/tmp
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ExecReload=/bin/kill -USR1 $MAINPID
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2017-04-21 18:28:55 +00:00
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# Limit the number of file descriptors and processes; see `man systemd.exec` for more limit settings.
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# Unmodified caddy is not expected to use more than this.
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2017-04-21 00:04:57 +00:00
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LimitNOFILE=1048576
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LimitNPROC=64
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2017-04-21 18:28:55 +00:00
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# Use private /tmp and /var/tmp, which are discarded after caddy stops.
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2017-04-21 00:04:57 +00:00
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PrivateTmp=true
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2017-04-21 18:28:55 +00:00
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# Use a minimal /dev
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2017-04-21 00:04:57 +00:00
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PrivateDevices=true
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2017-04-21 18:28:55 +00:00
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# Hide /home, /root, and /run/user. Nobody will steal your SSH-keys.
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2017-04-21 00:04:57 +00:00
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ProtectHome=true
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2017-04-21 18:28:55 +00:00
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# Make /usr, /boot, /etc and possibly some more folders read-only.
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2017-04-21 00:04:57 +00:00
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ProtectSystem=full
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2017-04-21 18:28:55 +00:00
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# … except /etc/ssl/caddy, because we want Letsencrypt-certificates there
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# and /var/log/caddy, because we want a place where logs can go.
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# This merely retains r/w access rights, it does not add any new. Must still be writable on the host!
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ReadWriteDirectories=/etc/ssl/caddy /var/log/caddy
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# Note: in v231 and above ReadWritePaths has been renamed to ReadWriteDirectories
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; ReadWritePaths=/etc/ssl/caddy /var/log/caddy
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# The following additional security directives only work with systemd v229 or later.
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# They further retrict privileges that can be gained by caddy.
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# Note that you may have to add capabilities required by any plugins in use.
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2017-04-21 00:04:57 +00:00
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CapabilityBoundingSet=CAP_NET_BIND_SERVICE
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AmbientCapabilities=CAP_NET_BIND_SERVICE
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NoNewPrivileges=true
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2017-04-21 18:28:55 +00:00
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# Caveat: Some plugins need additional capabilities.
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# For example "upload" needs CAP_LEASE
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; CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_LEASE
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; AmbientCapabilities=CAP_NET_BIND_SERVICE CAP_LEASE
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; NoNewPrivileges=true
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2017-04-21 00:04:57 +00:00
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[Install]
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WantedBy=multi-user.target
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