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so it should run after logrotate as long as it follows alphabetically.  (I wonder why redhat doesn't use numbers to set the order of the existing scripts, like 05-logrotate for example.)  I want to back up the previous day's backup file first and then write a new one.
 
so it should run after logrotate as long as it follows alphabetically.  (I wonder why redhat doesn't use numbers to set the order of the existing scripts, like 05-logrotate for example.)  I want to back up the previous day's backup file first and then write a new one.
  
/etc/cron.daily/01-wikidb:
+
/etc/cron.daily/wikidb:
 
<pre>
 
<pre>
 
#!/bin/sh
 
#!/bin/sh

Latest revision as of 17:00, 27 September 2005

(I'm not a big Redhat fan so have written this for my own memory in case I need to do this elsewhere)

First obviously we need a cron job to do the database backup. This page explains a bit about how cron is set up on RedHat but it's pretty standard. /etc/crontab shows that scripts in cron.daily get run at 4:02 AM via run-parts which has a loop like this:

for i in $1/*[^~,] ; do 
...

so it should run after logrotate as long as it follows alphabetically. (I wonder why redhat doesn't use numbers to set the order of the existing scripts, like 05-logrotate for example.) I want to back up the previous day's backup file first and then write a new one.

/etc/cron.daily/wikidb:

#!/bin/sh

/usr/bin/mysqldump -a wikidb > /root/backups/wikidb.sql

/etc/cron.daily contains a logrotate script, so it gets run daily. So we can just create /etc/logrotate.d/wikidb:

/root/backups/wikidb.sql {
        compress
        daily
        olddir /root/backups/old
        rotate 14
}