numa.service

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[Unit]
Description=Numa DNS — DNS you own, everywhere you go
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
ExecStart={{exe_path}}
Restart=always
RestartSec=2

# Transient system user per start; no PKGBUILD/sysusers setup required.
# systemd remaps the StateDirectory ownership to the dynamic UID on each
# launch, including legacy root-owned trees from pre-drop installs.
DynamicUser=yes

AmbientCapabilities=CAP_NET_BIND_SERVICE
CapabilityBoundingSet=CAP_NET_BIND_SERVICE

StateDirectory=numa
StateDirectoryMode=0750
ConfigurationDirectory=numa
ConfigurationDirectoryMode=0755

# Sandboxing — conservative set known to work with Rust network daemons.
# Aggressive hardening (MemoryDenyWriteExecute, SystemCallFilter, seccomp
# allow-lists) can be layered on once tested in isolation.
NoNewPrivileges=true
ProtectSystem=strict
# DynamicUser= sets ProtectHome=read-only by default — leaves /home
# readable so systemd can exec binaries installed under it (cargo install,
# source builds), while blocking writes to user $HOMEs. Don't set =yes:
# that hides /home entirely and fails with status=203/EXEC.
PrivateTmp=true
PrivateDevices=true
ProtectKernelTunables=true
ProtectKernelModules=true
ProtectControlGroups=true
RestrictRealtime=true
RestrictSUIDSGID=true
# AF_NETLINK for interface enumeration on network changes
RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX AF_NETLINK

StandardOutput=journal
StandardError=journal
SyslogIdentifier=numa

[Install]
WantedBy=multi-user.target