配置Supervisor开机启动：
新建一个“supervisord.service”文件
# dservice for systemd (CentOS 7.0+)
# by ET-CS (https://github.com/ET-CS)
[Unit]
Description=Supervisor daemon
[Service]
Type=forking
ExecStart=/usr/bin/supervisord -c /etc/supervisor/supervisord.conf
ExecStop=/usr/bin/supervisorctl shutdown
ExecReload=/usr/bin/supervisorctl reload
KillMode=process
Restart=on-failure
RestartSec=42s
[Install]
WantedBy=multi-user.target
将文件拷贝至：“/usr/lib/systemd/system/supervisord.service”
systemctl enable supervisord
验证一下是否为开机启动：systemctl is-enabled supervisord
