Step to rebuild crontab file of zimbra user
Step to rebuilt crontab file of zimbra user
Problem
Default crontab of zimbra user removed accidentally.
OR
System admin removed some entries from the crontab file.
Solution
Steps to restore or rebuilt crontab entries for the zimbra user on different ZCS environments.
(A) Steps for single-server setup:
First we have to take backup of current crontab file, then we will use following commands to re-built crontab for zimbra user.
On ZCS v8.6:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/zimbramon/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/zimbramon/crontabs/crontab.ldap >> /tmp/cron.zimbra cat /opt/zimbra/zimbramon/crontabs/crontab.store >> /tmp/cron.zimbra cat /opt/zimbra/zimbramon/crontabs/crontab.logger >> /tmp/cron.zimbra cat /opt/zimbra/zimbramon/crontabs/crontab.mta >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra su - zimbra -c "zmschedulebackup -D"
On ZCS v8.7.x:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/conf/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/conf/crontabs/crontab.ldap >> /tmp/cron.zimbra cat /opt/zimbra/conf/crontabs/crontab.store >> /tmp/cron.zimbra cat /opt/zimbra/conf/crontabs/crontab.logger >> /tmp/cron.zimbra cat /opt/zimbra/conf/crontabs/crontab.mta >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra su - zimbra -c "zmschedulebackup -D"
(B) Steps for multi-server setup:
Here we have mentioned the commands according to the role of ZCS server.
On ZCS v8.6:
LDAP Server:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/zimbramon/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/zimbramon/crontabs/crontab.ldap >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra su - zimbra -c "zmschedulebackup -D"
Mailbox Server:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/zimbramon/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/zimbramon/crontabs/crontab.store >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra su - zimbra -c "zmschedulebackup -D" /etc/init.d/crond restart
MTA+Proxy Server:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/zimbramon/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/zimbramon/crontabs/crontab.mta >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra
On ZCS v8.7.x:
LDAP Server:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/conf/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/conf/crontabs/crontab.ldap >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra su - zimbra -c "zmschedulebackup -D"
Mailbox Server:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/conf/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/conf/crontabs/crontab.store >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra su - zimbra -c "zmschedulebackup -D"
MTA+Proxy Server:
cp -pvr /var/spool/cron/zimbra /tmp/zimbra.cron.BAK cat /opt/zimbra/conf/crontabs/crontab > /tmp/cron.zimbra cat /opt/zimbra/conf/crontabs/crontab.mta >> /tmp/cron.zimbra echo "# ZIMBRAEND -- DO NOT EDIT ANYTHING BETWEEN THIS LINE AND ZIMBRASTART" >> /tmp/cron.zimbra crontab -u zimbra /tmp/cron.zimbra
Note : We have to restart Cron service after installing new crontab file.
Commands to restart Cron service on different OS versions.
Ubuntu 12.04/14.04/16.04
service cron restart
RHEL/CentOS 7.x
systemctl restart crond
RHEL/CentOS 6.x
service crond restart
Submitted by: Heera Singh Koranga