The system administrator can look at the error log to determine what caused a failure, or to periodically check the health of the system when it is running. There are different types of error logs in AIX operating system
- alog – have error logs about boot, console messages, NIM and others
- errlog – have error logs about hardware, kernel, and some apps
- syslog – have error logs about Internet dameons, and apps
Examples on how to query these error log details
- Display the contents of the boot log
alog -o -t boot
- Display the contents of the console log
alog -o -t console
- List all log types that alog knows
alog -L
- Display the contents of the system error log
errpt (Add -a or -A for varying levels of verbosity)
- Clear all errors up until x days ago.
errclear x
- List info on error ID FE2DEE00 (IDENTIFIER column in errpt output)
errpt -aDj FE2DEE00
- Put a “tail” on the error log
errpt -c
- List all errors that happened today
errpt -s ‘date +%m%d0000%y‘
- To list all errors on hdisk0
errpt -N hdisk0
- To list details about the error log
/usr/lib/errdemon -l
- To change the size of the error log to 2 MB
/usr/lib/errdemon -s 2097152
- To display information about errors in the error log file in detailed format
errpt -a
- In AIX 5L Version 5.1, the errpt command now supports an intermediate output format by using the -A flag,
errpt -A -j identifier
Where identifier is the eight digit hexadecimal unique error identifier.
- To display a detailed report of all errors logged for a particular error identifier,
errpt -a -j identifier
Where identifier is the eight digit hexadecimal unique error identifier.
- To clear all entries from the error log, enter the following command:
errclear 0
- To stop error logging, enter the following command:
usr/lib/errstop
- To start error logging, enter the following command:
/usr/lib/errdemon
- To list the current setting of error log file and buffer size and duplicate information /usr/lib/errdemon -l
If you want to change the buffer size and error log file size, you can use the errdemon command.
