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# caddy.service
#
# For using Caddy with a config file.
#
# Make sure the ExecStart and ExecReload commands are correct
# for your installation.
#
# See https://caddyserver.com/docs/install for instructions.
#
# WARNING: This service does not use the --resume flag, so if you
# use the API to make changes, they will be overwritten by the
# Caddyfile next time the service is restarted. If you intend to
# use Caddy's API to configure it, add the --resume flag to the
# `caddy run` command or use the caddy-api.service file instead.

[Unit]
Description=Caddy web server
Documentation=https://caddyserver.com/docs/
After=network-online.target
Wants=network-online.target systemd-networkd-wait-online.service
StartLimitIntervalSec=14400
StartLimitBurst=10

[Service]
User=caddy
Group=caddy
Environment=XDG_DATA_HOME=/var/lib
Environment=XDG_CONFIG_HOME=/etc
ExecStartPre=/usr/bin/caddy validate --config /etc/caddy/Caddyfile
ExecStart=/usr/bin/caddy run --environ --config /etc/caddy/Caddyfile
ExecReload=/usr/bin/caddy reload --config /etc/caddy/Caddyfile
ExecStopPost=/usr/bin/rm -f /run/caddy/admin.socket

# Do not allow the process to be restarted in a tight loop. If the
# process fails to start, something critical needs to be fixed.
Restart=on-abnormal

# Use graceful shutdown with a reasonable timeout
TimeoutStopSec=5s

LimitNOFILE=1048576
LimitNPROC=512

# Hardening options
AmbientCapabilities=CAP_NET_BIND_SERVICE
CapabilityBoundingSet=CAP_NET_BIND_SERVICE
DevicePolicy=closed
LockPersonality=true
MemoryAccounting=true
MemoryDenyWriteExecute=true
NoNewPrivileges=true
PrivateDevices=true
PrivateTmp=true
ProcSubset=pid
ProtectClock=true
ProtectControlGroups=true
ProtectHome=true
ProtectHostname=true
ProtectKernelLogs=true
ProtectKernelModules=true
ProtectKernelTunables=true
ProtectProc=invisible
ProtectSystem=strict
RemoveIPC=true
ReadWritePaths=/var/lib/caddy /var/log/caddy /run/caddy
RestrictNamespaces=true
RestrictRealtime=true
RestrictSUIDSGID=true

[Install]
WantedBy=multi-user.target