supportconfig 是一个 SLE 系统搜集系统整体情况的命令，我们可以选择搜集哪些信息
# supportconfig -C# sed -i 's\OPTION_AUDIT=1\OPTION_AUDIT=0\g' /etc/supportconfig.conf（补充：这里使 supportconfig 命令不搜集 audit 日志为例）
This Linux server is a virtual server. If we reboot it though its virtual software, there is no relevant logs in the /var/log/messages.
This Linux server is a member of a pacemaker cluster. If the pacemaker cluster software fences this server for protecting the whole cluster, there is no relate logs in the /var/log/messages.
This Linux server has critical problems in its system or hardware. Core panic of Linux and hardware problem both can reboot the system automatically without any reboot logs in the /var/log/messages.
# ip -s -h link# iftop -nN -i eth0（补充：这里以持续查看名为 eth0 网卡的流量为例）
Read-only file system# mount -o remount rw /run（补充：这里以重新挂载 /run 目录并给此目录添加读和写权限为例）
非正常关机可能造成文件系统受损，系统重启后，受损的分区自动挂载后就会变成只读。此时修复这个分区则可能修复这个问题
# fsck.ext4 -y /dev/sda1（补充：这里以修复分区格式为 ext4 的分区 /dev/sda1 为例）
# vim /root/12456.sh创建以下内容：
#!/bin/bash
for i in {1..5}
do
echo $i
done（补充：这里以创建 /etc/root/for.sh 脚本为例）
# vim /etc/systemd/system/12456.service创建以下内容：
[Unit]
Description=12345
After=getty@tty1.service display-manager.service plymouth-start.service
Before=systemd-poweroff.service systemd-halt.service
DefaultDependencies=no
[Service]
ExecStart=/root/12456.sh
Type=forking
[Install]
WantedBy=poweroff.target
WantedBy=reboot.target
WantedBy=halt.target（补充：这里以创建 /etc/systemd/system/12456.service 来管理 ExecStart=/root/12456.sh 为例）
# systemctl daemon-reload# chmod u+x /etc/systemd/system/12456.service# ln -s /usr/lib/systemd/system/12456.service /usr/lib/systemd/system/halt.target.wants/# ln -s /usr/lib/systemd/system/12456.service /usr/lib/systemd/system/poweroff.target.wants/# ln -s /usr/lib/systemd/system/12456.service /usr/lib/systemd/system/reboot.target.wants/