micke/cluster_cron
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Update README.md

Browse source
This commit is contained in:
Mikael Nordin 2016-09-15 10:09:37 +02:00 • committed by GitHub
parent 24bc37f72d
commit 14c8953ca5
1 changed files with 10 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
README.md
View file

@ -21,3 +21,13 @@ add this line:
```
* * * * * /usr/local/bin/cluster_cron.pl cluster /mnt/shareddir 0 /var/spool/cron/crontabs >> /mnt/shareddir/cluster.log 2>&1
```
## Modes
In mode 0 (active/passive) only one of the servers are active and the cron entries are commented out on the other servers. You can still edit the crontab on all servers, but cronjobs will only run on the active node
In mode 1 (active/active) the cron file will be the same on all servers and all cronjobs will run everywhere. If you need som cronjobs to only run in one server and some cronjobs to run on all you can add two entries to the crontab of root on all severs but using different users (called "passive" and "active" in the example below) and differernt modes, e.g.:
```
* * * * * /usr/local/bin/cluster_cron.pl passive /mnt/shareddir 0 /var/spool/cron/crontabs >> /mnt/shareddir/cluster_passive.log 2>&1
* * * * * /usr/local/bin/cluster_cron.pl active /mnt/shareddir 1 /var/spool/cron/crontabs >> /mnt/shareddir/cluster_active.log 2>&1
```