qemu-img使用

改变Linux服务的使用者

[root@localhost ~]# cd /usr/lib/systemd/system
[root@localhost system]# ll | grep "self_name.service"
## 例如
[root@localhost system]# vim easystack-hamal-api.service 
[Unit]
Description=EasyStack hamal API Service
After=syslog.target network.target

[Service]
Type=simple
User=root
ExecStart=/usr/bin/hamal-api --config-file /etc/hamal/hamal.conf
Restart=on-failure

[Install]
WantedBy=multi-user.target

# User修改为你自己需要的User即可
[root@localhost system]# systemctl restart easystack-hamal-api
Warning: easystack-hamal-api.service changed on disk. Run 'systemctl daemon-reload' to reload units.
[root@localhost system]# systemctl daemon-reload
# 这时候需reload一下你的service文件，重新启动service才会有效
[root@localhost system]# systemctl restart easystack-hamal-api
[root@localhost system]#

JackDan9 Thinking