Re: [Csync2] cron "overruns"

[Гусев Павел]

Hi everyone!

We use some wrapper for run csync2 on each of nodes:

 

#!/bin/bash

list="node01 node02 node03"

trid=$(date +%s)

LOGS_PATH=/var/log/csync2_master

mkdir -p $LOGS_PATH

CUR_DATE=`date +%F`

find $LOGS_PATH -type f -mtime +30 -exec rm -f {} \; 2>&1          | tee $LOGS_PATH/last.log       | tee -a $LOGS_PATH/$CUR_DATE.log

for ip in $list;do

echo ' ******' 2>&1                                        | tee -a $LOGS_PATH/last.log    | tee -a $LOGS_PATH/$CUR_DATE.log

        echo 'Starting '${trid}' sync on '$ip' at '`date` 2>&1     | tee -a $LOGS_PATH/last.log    | tee -a $LOGS_PATH/$CUR_DATE.log

        ssh csync2@$ip "timeout 3600 sudo csync2 -Bvx" 2>&1        | tee -a $LOGS_PATH/last.log    | tee -a $LOGS_PATH/$CUR_DATE.log

        echo 'Finishing '${trid}' sync on '$ip' at '`date` 2>&1    | tee -a $LOGS_PATH/last.log    | tee -a $LOGS_PATH/$CUR_DATE.log

        echo ' ====== ' 2>&1                                       | tee -a $LOGS_PATH/last.log    | tee -a $LOGS_PATH/$CUR_DATE.log

done

echo -e "*=*=*=*=*=*=\n" 2>&1                                      | tee -a $LOGS_PATH/last.log    | tee -a $LOGS_PATH/$CUR_DATE.log

sleep 60;

 

You must place this script to some *nix machine

This machine must can connect to all nodes using csync2 account, and account csync2 must have sudo permissions for run csync2 binary (you also can run csync2 from csync2 user, but in this case csync2 may have not permissions for synchronize some files)

timeout 3600 - this is time limit for csync2 process, you can change timeout value for your case

sleep 60 - after all nodes are synchronized, you can sleep 60 seconds before next synchronization

If you need, you can wrap content of this script in a infinite loop (while true;do .... ;sleep 60;done) and run it in screen

Alternatively of infinite loop, you can run this script in supervisord , if you have any questions, you can write email for me :)

 

 

--
С уважением,

Гусев Павел

Руководитель отдела системного администрирования

 

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06.01.2015, 10:35, "Weinzierl Stefan" <ste...@weinzierl-stefan.de>:

On 06.01.2015 04:16, Marc Fournier wrote:

 Terrible subject, sorry … basically, if I setup cron to run csync2 every 10 minutes, if it takes longer then 10 minutes, is there anything that prevents another instance of csync2 from starting up?

Hello,

I use this script:

#!/bin/sh

PIDFILE=/var/run/csync2.sh.pid

if [ -e $PIDFILE ]; then
   kill -s 0 `cat $PIDFILE` && exit;
fi

echo $$ > $PIDFILE

/usr/sbin/csync2 -x -B

rm $PIDFILE -rf


Stefan
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