v2ray-core/release/config/systemd/v2ray@.service

[Unit]
Description=V2Ray - A unified platform for anti-censorship - Profile -> %i
Documentation=https://v2ray.com https://guide.v2fly.org
After=network.target nss-lookup.target
Wants=network-online.target

[Service]
# If the version of systemd is 240 or above, then uncommenting Type=exec and commenting out Type=simple
#Type=exec
Type=simple
# Runs as root or add CAP_NET_BIND_SERVICE ability can bind 1 to 1024 port.
# This service runs as root. You may consider to run it as another user for security concerns.
# By uncommenting User=v2ray and commenting out User=root, the service will run as user v2ray.
# More discussion at https://github.com/v2ray/v2ray-core/issues/1011
User=root
#User=v2ray
CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_NET_RAW
NoNewPrivileges=yes
ExecStart=/usr/bin/v2ray/v2ray -config /etc/v2ray/%i.json
Restart=on-failure
# Don't restart in the case of configuration error
RestartPreventExitStatus=23

[Install]
DefaultInstance=default
WantedBy=multi-user.target