CentOS7へ移行したのでh2o用のsystemd service fileを作った /lib/systemd/system/h2o.service [Unit] Description=H2O the optimized HTTP/1, HTTP/2 server After=syslog.target network.target remote-fs.target nss-lookup.target [Service] Type=forking PIDFile=/var/run/h2o/h2o.pid ExecStartPre=/usr/local/bin/h2o -c /etc/h2o/h2o.conf -t ExecStart=/usr/local/bin/h2o -c /etc/h2o/h2o.conf -m daemon ExecReload=/bin/kill -s HUP