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How do I get metalog rotation + script execution work?
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as.gentoo
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Joined: 07 Aug 2004
Posts: 318

PostPosted: Mon May 08, 2017 11:14 pm    Post subject: How do I get metalog rotation + script execution work? Reply with quote

Hello,

I'm using metalog for a long time now. It lately stuck that metalog removed old logs instead of keeping them.
I created a script that handles a rotated file but nothing happens. There is nothing like 'metalog <some error happened>' in the /var/log/everything/* log files.

Here is my setup
Code:
/etc/conf.d/metalog

METALOG_OPTS="-s"
CONSOLE="/dev/tty10"
FORMAT='$1 [$2] $3'
Code:
/etc/metalog

maxsize  = 268435456
maxtime  = 2419200
maxfiles = 3
Everything important :
    facility = "*"
    minimum  = 6
    logdir   = "/var/log/everything"
    postrotate_cmd = "/sbin/metalog-postrotate-compress.sh"
Everything very important :
    facility = "*"
    minimum  = 1
    logdir   = "/var/log/critical"
    postrotate_cmd = "/sbin/metalog-postrotate-compress.sh"
    break = 1
[…]
Code:
$> ll /sbin/metalog-postrotate-compress.sh
-rwx------ 1 root root 4221  1. Mai 11:48 /sbin/metalog-postrotate-compress.sh
Code:
/sbin/metalog-postrotate-compress.sh

if [ -z $1 ] || [ -z $2 ] || [ -z $3 ] ; then
    echo -e "\nThere is a problem with calling this script.\nAt least one parameter is missing.\nThis script is intended to be called by metalog only!\n" ; exit 1
fi
s_date="$1"    # from metalog(d)
s_caller="$2"  # log source (smartd, openrc…), "facility" from metalog.conf ???
s_logfile="$3" # logfile full path name ### CHECK ###
s_target_file="${s_logfile}"
if [ -n "${s_logfile}" ] && [ -f "${s_logfile}" ] && [ -s "${s_logfile}" ] && [ -r "${s_logfile}" ] && [ -w "${s_logfile}" ] ; then
    umask 0077
    renice -n 19 -p $$ > /dev/null
    ionice -c 3 -p $$ > /dev/null
    echo -e "\n\nzpaq a \"${s_target_file}.zpaq\" \"${s_logfile}\" -method 5" >> /home/xxx/tmp/METALOG_calls_program.out
    /usr/bin/time sh -c "zpaq a \"${s_target_file}.zpaq\" \"${s_logfile}\" -method 5" 1>>/home/xxx/tmp/METALOG_calls_program.out 2>>/home/xxx/tmp/METALOG_calls_program.out
    if [ $? -ne 0 ] ; then echo "zpaq compression of '${s_logfile}' failed" && exit 10 ; fi
fi
echo -e "\n" $1 $2 $3 $4 $5 $6 $7 $8 $9 $10 "\n" >> /home/xxx/tmp/METALOG_calls_program.out
Code:
/var/log/everything/
-rw-r--r-- 1 root root 1800334  9. Mai 00:34 /var/log/everything/current
-rw-r--r-- 1 root root 2018117  6. Apr 01:59 /var/log/everything/log-2017-04-06-00:00:01
-rw-r--r-- 1 root root 4110283 13. Apr 01:59 /var/log/everything/log-2017-04-13-00:00:01
-rw-r--r-- 1 root root 1285154 20. Apr 01:59 /var/log/everything/log-2017-04-20-00:00:01
-rw-r--r-- 1 root root 1422020 27. Apr 01:59 /var/log/everything/log-2017-04-27-00:00:01

So there are four rotated log files, so the condition maxfiles=3 was met.
What's wrong here?


When I (re)start metalog I get
Code:
[…]
 * Starting metalog ...
 * start-stop-daemon: fopen `/run/metalog.pid': No such file or directory
 * Detaching to start `/usr/sbin/metalog' ...
Is that relevant anyhow?
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