CentOS系统异常关机日志分析及处理

异常关机现象

在CentOS系统中，异常关机可能是由多种原因引起的，如硬件故障、软件错误、电源问题等，当系统出现异常关机时，通常会留下相应的日志信息，通过分析这些日志信息，我们可以找到异常关机的原因,并采取相应的措施进行修复。

日志分析

查看系统日志

我们需要查看系统的日志文件，以获取异常关机的相关信息，在CentOS系统中,常用的日志文件包括：

• /var/log/messages：记录了系统的所有日志信息。
• /var/log/dmesg：记录了内核的日志信息。
• /var/log/syslog：记录了系统的一般日志信息。

分析日志内容

以下是一个典型的异常关机日志示例：

Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpuset
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys pids
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys ns
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys cpu
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys memory
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys devices
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys net_cls, cpuacct
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys perf_event
Dec  1 14:30:00 server1 kernel: [    0.000000] Initializing cgroup subsys hugetlb
Dec  1 14:30:00 server1 kernel: [    0