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Full Discussion: Zabbix item for last line of a log file
Top Forums UNIX for Beginners Questions & Answers Zabbix item for last line of a log file Post 303031781 by bakunin on Tuesday 5th of March 2019 07:45:03 PM
Old 03-05-2019
The following is probably more a workaround then a solution:

You said that you have no problems with small files but ony big files. In addition, i get from your wording that you don't need real-time exactness because you will poll the data only once in a while. So, why not set up a small cron job that copies the last line of the big log into a small file, each time overwriting the old one, like this sketch script:

Code:
tail -n 1 /path/to/big.log > /path/to/last.logline

Then you can query this new file with your Zabbix methods because it always contain one line only.

I hope this helps.

bakunin
 

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LEARN ABOUT LINUX

git-fmt-merge-msg

GIT-FMT-MERGE-MSG(1)						    Git Manual						      GIT-FMT-MERGE-MSG(1)

NAME

       git-fmt-merge-msg - Produce a merge commit message

SYNOPSIS

       git fmt-merge-msg [-m <message>] [--log[=<n>] | --no-log] <$GIT_DIR/FETCH_HEAD
       git fmt-merge-msg [-m <message>] [--log[=<n>] | --no-log] -F <file>

DESCRIPTION

       Takes the list of merged objects on stdin and produces a suitable commit message to be used for the merge commit, usually to be passed as
       the <merge-message> argument of git merge.

       This command is intended mostly for internal use by scripts automatically invoking git merge.

OPTIONS

       --log[=<n>]
	   In addition to branch names, populate the log message with one-line descriptions from the actual commits that are being merged. At most
	   <n> commits from each merge parent will be used (20 if <n> is omitted). This overrides the merge.log configuration variable.

       --no-log
	   Do not list one-line descriptions from the actual commits being merged.

       --[no-]summary
	   Synonyms to --log and --no-log; these are deprecated and will be removed in the future.

       -m <message>, --message <message>
	   Use <message> instead of the branch names for the first line of the log message. For use with --log.

       -F <file>, --file <file>
	   Take the list of merged objects from <file> instead of stdin.

CONFIGURATION

       merge.branchdesc
	   In addition to branch names, populate the log message with the branch description text associated with them. Defaults to false.

       merge.log
	   In addition to branch names, populate the log message with at most the specified number of one-line descriptions from the actual
	   commits that are being merged. Defaults to false, and true is a synonym for 20.

       merge.summary
	   Synonym to merge.log; this is deprecated and will be removed in the future.

SEE ALSO

       git-merge(1)

GIT

       Part of the git(1) suite

Git 1.8.5.3							    01/14/2014						      GIT-FMT-MERGE-MSG(1)
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