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Editor to share with you how to use mcelog, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Start the mcelog method manually:

# mcelog-daemon

Run mcelog in daemon mode, waiting for errors from the kernel.

The backend service starts mcelog:

RHEL 7:

Systemctl start mcelog

Systemctl enable mcelog

RHEL 6:

Service mcelogd start

Chkconfig mcelogd on

View the mcelog log:

# vim / var/log/mcelog

Check to see if the mcelog daemon detects an error message:

# mcelog-client

Query a currently running mcelog daemon for errors

Parse the mce output of a system exception:

# mcelog-- ascii < file.log

Or:

# mcelog-ascii-file file.log

Decode machine check ASCII output from kernel logs

An example of exception output is as follows:

[Hardware Error]: CPU 12: Machine Check Exception: 5 Bank 22: be200000000c110a

[Hardware Error]: RIP! INEXACT! 10: {mwait_idle+0x77/0xd0}

[Hardware Error]: TSC 103e7072fa77de ADDR c5f17ee00 MISC b0fe435602184086

[Hardware Error]: PROCESSOR 0:306e4 TIME 1462390781 SOCKET 0 APIC 1

[Hardware Error]: Run the above through 'mcelog-- ascii'

Remove the preceding "[Hardware Error]:" from the file.log content:

CPU 12: Machine Check Exception: 5 Bank 22: be200000000c110a

RIP! INEXACT! 10: {mwait_idle+0x77/0xd0}

TSC 103e7072fa77de ADDR c5f17ee00 MISC b0fe435602184086

PROCESSOR 0:306e4 TIME 1462390781 SOCKET 0 APIC 1

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