官方 提供的那个 有坑，坑在 systemd–networkd–wait–online.service 这里，按情况修改
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[Unit] Description=Caddy HTTP/2 web server Documentation=https://caddyserver.com/docs After=network-online.target Wants=network-online.target networkmanager-wait-online.service [Service] Restart=on-failure StartLimitInterval=86400 StartLimitBurst=5 ; User and group the process will run as. User=www-data Group=www-data ; Letsencrypt-issued certificates will be written to this directory. Environment=CADDYPATH=/etc/ssl/caddy ; Always set "-root" to something safe in case it gets forgotten in the Caddyfile. ExecStart=/usr/local/bin/caddy -quic -log stdout -agree=true -conf=/etc/caddy/Caddyfile -root=/var/tmp ExecReload=/bin/kill -USR1 $MAINPID ; Limit the number of file descriptors; see `man systemd.exec` for more limit settings. LimitNOFILE=1048576 ; Unmodified caddy is not expected to use more than that. LimitNPROC=64 ; Use private /tmp and /var/tmp, which are discarded after caddy stops. PrivateTmp=true ; Use a minimal /dev PrivateDevices=true ; Hide /home, /root, and /run/user. Nobody will steal your SSH-keys. ProtectHome=true ; Make /usr, /boot, /etc and possibly some more folders read-only. ProtectSystem=full ; … except /etc/ssl/caddy, because we want Letsencrypt-certificates there. ; This merely retains r/w access rights, it does not add any new. Must still be writable on the host! ReadWriteDirectories=/etc/ssl/caddy ; The following additional security directives only work with systemd v229 or later. ; They further retrict privileges that can be gained by caddy. Uncomment if you like. ; Note that you may have to add capabilities required by any plugins in use. ;CapabilityBoundingSet=CAP_NET_BIND_SERVICE ;AmbientCapabilities=CAP_NET_BIND_SERVICE ;NoNewPrivileges=true [Install] WantedBy=multi-user.target |