Linux VM failed to modify their passwords online. How can I troubleshoot?

Linux cloud hosts failed to modify their passwords online. How can I troubleshoot?

Cloud Platform Environment: ZStack Enterprise Version 4.1.3

 Network Environment: Flat Network

Storage environment: ZStack local storage

Cloud Host System: CentOS 7.6 System

QGA was not installed in advance and ran when password was changedQemu Guest Agent, SELinux not closed.

1. InstallationQemu Guest Agent

#yum  Install  Qemu-guest-agent - Y

(Figure 1: Installation process)

2. Set Qemu Guest Agent to boot

#systemctl  Enable  Qemu-guest-agent

(Figure 2: Set self-start)

3. First check if the QGA switch in the cloud host details page is turned on

(Figure 3: See if QGA is on)

4. Check whether SELinux is on

(Figure 4: Here SELinux is open)

5. Temporarily close SELinux or permanently close SELinux

#setenforce  0

(Fig. 5: Set temporary shutdown)

#sed - I  ' S/SELINUX=enforcing/SELINUX=disabled/g ' / Etc/selinux/config

(Figure 6: Modifying the SELinux file)

Test:

1. Click the Cloud Host Operations button

(Fig. 7 Tap Action Button)
 

2. After clicking on the system configuration, Click to modify the cloud host password

(Figure 8: Online Modify Cloud Host Password Entry)

3. Re-modify the cloud host password

(Figure 9: Enter a new password to set after entering a user name)

4. Successful modification

(Figure 10: Cloud host password successfully modified online)