Cisco Model D-PCG1000 PowerKEY CAS Gateway Installation Guide
Retrieving a Kernel Panic Dump File
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Retrieving a Kernel Panic Dump File
If routine troubleshooting is unable to uncover the cause for any of the incidents
listed in Overview (on page 60), you may suspect that a kernel panic event has
occurred. When a kernel panic event occurs, the TED server OS creates a kernel
panic dump file and places it in this directory on the TED server: /var/crash. Each
time a kernel panic is dumped, a subdirectory gets created and the actual file is
named vmcore.
Follow these instructions to locate the kernel panic file so that you can send it to
Follow these instructions to locate the kernel panic file so that you can send it to
Cisco Services for analysis.
1 On the DNCS/ISDS, open an xterm window and log on as root user.
2 Type ssh dncsted -l root and press Enter. A password prompt appears in the
1 On the DNCS/ISDS, open an xterm window and log on as root user.
2 Type ssh dncsted -l root and press Enter. A password prompt appears in the
xterm window.
3 Type the TED root password and press Enter.
4 Type ls -al /var/crash and press Enter. The TED lists the files and subdirectories
4 Type ls -al /var/crash and press Enter. The TED lists the files and subdirectories
in the /var/crash directory, similar to the following example.
total 28
drwxr-xr-x 5 root root 4096 Jan 13 14:08 .
drwxr-xr-x 20 root root 4096 Jan 12 14:39 ..
drwxr-xr-x 2 root root 4096 Jan 12 15:23 127.0.0.1-2010-01-12-15:22:01
drwxr-xr-x 2 root root 4096 Jan 13 13:58 127.0.0.1-2010-01-13-13:56:36
drwxr-xr-x 2 root root 4096 Jan 13 14:10 127.0.0.1-2010-01-13-14:08:35
Note: In this example, lines 3–6 (in blue) are used to indicate the subdirectories
that contain dump files. When each dump file and subdirectory is created, it is
named with the local host IP address and the date and time of the dump.
5 Change directories to the subdirectory whose file you want to retrieve. For
example, to change to the last subdirectory listed in the previous step, you would
type cd 127.0.0.1-2010-01-13-14:08:35 and press Enter.
6 Type ls -al and press Enter. The TED lists the files in the current directory,
similar to the following example.
total 6170884
drwxr-xr-x 2 root root 4096 Jan 13 14:10 .
drwxr-xr-x 5 root root 4096 Jan 13 14:08 ..
-r-------- 1 root root 6312789080 Jan 13 14:10 vmcore
Note: In this example, line 4 (in blue) is used to indicate the dump file. All kernel
panic dump files contain "vmcore" in the name.
7 Send the kernel panic dump file to Cisco Services for analysis.