ansible-personal/roles/common/files/update-spamhaus-nftables.service

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SYSTEMD
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[Unit]
Description=Update Spamhaus lists
# This service will fail if nftables is not running so we use Requires to make
# sure that nftables is started.
Requires=nftables.service
# Make sure the network is up and nftables is started
After=network-online.target nftables.service
Wants=network-online.target update-spamhaus-nftables.timer
[Service]
# https://www.ctrl.blog/entry/systemd-service-hardening.html
# Doesn't need access to /home or /root
ProtectHome=true
# Possibly only works on Ubuntu 18.04+
ProtectKernelTunables=true
ProtectSystem=full
# Newer systemd can use ReadWritePaths to list files, but this works everywhere
ReadWriteDirectories=/etc/nftables
PrivateTmp=true
WorkingDirectory=/var/tmp
SyslogIdentifier=update-spamhaus-nftables
ExecStart=/usr/bin/flock -x update-spamhaus-nftables.lck \
/usr/local/bin/update-spamhaus-nftables.sh
[Install]
WantedBy=multi-user.target