Kubernetes DoS prevention
firewall-cmd --permanent --zone=public --add-rich-rule='rule family="ipv4" source address="?" port port="3777" protocol="tcp" accept'
/etc/sprinkler.conf.d/config.toml
/etc/sprinkler.conf.d/master.crt
/etc/sprinkler.conf.d/master.p12
/root/.sprinkler.key
cargo build --release --features sprinkler/master