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# caddy-api.service
#
# For using Caddy with its API.
#
# This unit is "durable" in that it will automatically resume
# the last active configuration if the service is restarted.
#
# See https://caddyserver.com/docs/install for instructions.

[Unit]
Description=Caddy API 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=/var/lib
ExecStart=/usr/bin/caddy run --environ --resume

# 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