看门狗内核bug记录
Message from syslogd@k8s-master01 at Dec 4 16:33:47 ...kernel:NMI watchdog: BUG: soft lockup - CPU#7 stuck for 22s! [InputThread:2265]Message from syslogd@k8s-master01 at Dec 4 16:33:47 ...kernel:NMI
Message from syslogd@k8s-master01 at Dec 4 16:33:47 ...
kernel:NMI watchdog: BUG: soft lockup - CPU#7 stuck for 22s! [InputThread:2265]
Message from syslogd@k8s-master01 at Dec 4 16:33:47 ...
kernel:NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [urlgrabber-ext-:15280]
Message from syslogd@k8s-master01 at Dec 4 16:33:47 ...
kernel:NMI watchdog: BUG: soft lockup - CPU#4 stuck for 22s! [NetworkManager:872]
解决办法:
#追加到配置文件中
echo 30 > /proc/sys/kernel/watchdog_thresh
#查看
[root@git-node1 data]# tail -1 /proc/sys/kernel/watchdog_thresh
30
#临时生效
sysctl -w kernel.watchdog_thresh=30
#内核软死锁(soft lockup)bug原因分析
Soft lockup名称解释:所谓,soft lockup就是说,这个bug没有让系统彻底死机,但是若干个进程(或者kernel thread)被锁死在了某个状态(一般在内核区域),很多情况下这个是由于内核锁的使用的问题。
kernel.watchdog_thresh=30
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