I'd recommend putting your tests/conditionals into a shell script, then
check for the exit code from the script, for example:
cat /usr/local/bin/my_test_script
#!/bin/sh
MYERRLOG=/var/www/myapp/log/myapp-err.log
if [ ! -e $MYERRLOG ];then # If the error log doesn't exist,
all is good, so exit 'happy'
exit 1
fi
grep "^.*FATAL.*$" $MYERRLOG >/dev/null 2>&1 # the file exists, this
will be reached. grep the file for the error line, and check the return
status
STAT=$?
if [ "$STAT" -eq "0" ];then
exit 0 # if the return status shows that the error was found,
exit with 'unhappy' status
else
exit 1 #otherwise, all is good
fi
and your monit script:
check program my_test_script with path /usr/local/bin/my_test_script
if status != 1 then alert
if status != 1 for 3 cycles then alert
There's obviously other, probably 'cleaner' ways to do this, but that's
the sort of construct I use.
On 6/17/15 12:57 AM, Ben Soot wrote:
Hi there,
I want to be alerted if file content (in an error log file) matches a
pattern. The difficulty is that the file itself might not exist at
all, which is ok.
How would you do that?
My current clause gives me a read flag in mmonit when the file does
not exist:
check file myapp-err.log with path /var/www/myapp/log/myapp-err.log
if match
"^.*FATAL.*$" then alert
Thanks Ben
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Paul Theodoropoulos
www.anastrophe.com
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