Question:
The server found a problem: the memory is full, and even swap is completely occupied.
Solution:
The system has 8g memory, and the setroubleshootd process occupies 4G. This process is the daemon of SELinux. Just close SELinux.
vi /etc/selinux/config
#Comment out
#SELINUX=enforce
#Comment out
#SELINUXTYPE=targeted
#Add
SELINUX=disabled
Modify the configuration file and restart to take effect