systemd unit file for parity with clean exits

parity.service

[Unit]
Description=Parity Daemon
After=network.target

[Service]
User=parity
Group=parity

ExecStart=/usr/bin/parity \
--fat-db on --db-compaction auto --base-path /srv/blockchain/parity/ --mode active \
--pruning archive --cache-size=512 --no-hardware-wallets --no-jsonrpc \
--no-ws --no-ipc --no-dapps --no-secretstore --ntp-servers=clock.ix.gs --whisper

KillSignal=SIGHUP
Restart=on-failure
TimeoutSec=120

Nice=19

[Install]
WantedBy=multi-user.target