Saving Core Files from Junos OS Processes
By default, when an internal Junos OS process generates a core file, the file and associated context information are saved for debugging purposes in a compressed tar file named process-name.core.core-number.tgz in the /var/tmp/ and /var/crash/ directories. For Junos OS Evolved, the output is saved in the /var/core/ directory for Routing Engine core files and /var/lib/ftp/in/ for FPC core files. The contextual information includes the configuration and system log message files.
To disable the saving of core files and associated
context information, include the no-saved-core-context statement
at the [edit system] hierarchy level:
[edit system] no-saved-core-context;
To save the core files only, include the saved-core-files statement at the [edit system] hierarchy level and specify
the number of files to save:
[edit system] saved-core-files number;
number is the number
of core files to save and can be a value
from 1 through 10.
To save the core files along with the contextual
information, include the saved-core-context statement at
the [edit system] hierarchy level:
[edit system] saved-core-context;