Display The Log File When Kernel Crash Core File Is Not Generated; Check For Compactflash Card And Hard Disk Failure - Juniper M Series Monitoring And Troubleshooting Manual

Meaning
Related
Documentation

Display the Log File When Kernel Crash Core File Is not Generated

Purpose
Action
Meaning
Related
Documentation

Check for CompactFlash Card and Hard Disk Failure

Copyright © 2012, Juniper Networks, Inc.
user@host> show log messages
Mar 9 12:22:02 host savecore: Router crashed.....
Mar 9 12:22:02 host savecore: reboot after panic: Loss of soft watchdog Mar
12:22:02 host savecore: system went down at Sun Mar
12:22:02 host savecore: Selective dump will be saved now
A kernel crash occurred and a core file has been generated.
Checklist for Monitoring the Routing Engine on page 165
To gather error messages from the Messages log file when kernel crash core file is not
generated after a power outage.
You might see the following in the
up. To view the log file, use the following command:
messages
user@host> show log messages
user@host> show log messages
Aug 15 15:35:58 host /kernel: checking for core dump...
Aug 15 15:35:59 host /kernel: savecore: Router rebooted. Cause unknown....
Aug 15 15:35:59 host savecore: Router rebooted. Cause unknown....
The kernel checks for a core dump file when the router reboots.
Checklist for Monitoring the Routing Engine on page 165
If the Routing Engine has a CompactFlash card failure, the router boots from the hard
disk. When you log in to the router, the CLI will indicate that the router has booted from
alternate media.
If the Routing Engine has a hard drive failure, the router boots from the CompactFlash
card as usual. However, the router cannot write to the hard drive.
When the CompactFlash Card Is Removed from the Boot List on page 198
1.
Determine Why CompactFlash Card Did Not Mount on page 198
2.
When the Hard Disk Is Removed from the Boot List on page 199
3.
4. Verify That the Hard Disk Did Not Mount on page 199
Verify That the Hard Disk Is Missing from The Boot List on page 200
5.
View Alarms When Media Is Removed from the Boot List on page 200
6.
Chapter 6: Monitoring the Routing Engine
9 12:22:02 2003 Mar
file after the router comes back
/var/log/messages
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