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Old 07-09-2008, 06:26 AM   #1
mahmoud
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Question crontab not working


hi i have a script in my crontab it was working and all of a sudden it stopped working and i have run the script from the CLI and it works fine does anyone have any idea what can cause this.
 
Old 07-09-2008, 06:55 AM   #2
matthewg42
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Does the script rely on some environment variables which are not present when you run from cron? That's a common cause of problems.
 
Old 07-09-2008, 07:14 AM   #3
mahmoud
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sorry like what this is the script
Quote:
#!/bin/sh
rm -rf /backup*
rm -fr /tmp/serverbk.log

# set smb server and auth vars
sharepoint="//10.0.5.5/share"
username="user"
password="passdw"

#Set sbm point for second share on NAS
sharepoint2="//10.0.5.5/share2"
username2="user2"
password2="passwd2"

#set mysql details
mysqlhost="localhost"
mysqlusername="root"
#mysqlpasswd="mysqlpasswordhere"

#set which folder locations we want to backup, inc trailing slashes
#add more here and append to the appropriate tar line further down the script if needed

location1="/www/"
location2="/home/"
location3="/root/"
location4="/opt/"

#set temp files and folders
backuptemp="/backuptmp/"
savepath="/backup/"
savepath2="/web_backup/"
filename=$(hostname).backup.$(date +%F).tar.gz
#filname2=$(IS-5017).backup.$(date +%B%e).tar.gz
mountpoint="/mnt/nas/"
mountpoint2="/mnt/nas2/"

# make sure our working folders are present and accounted for

if [ ! -d "${backuptemp}" ] >> /tmp/serverbk.log
then
mkdir $backuptemp >> /tmp/serverbk.log
fi

if [ ! -d "${savepath}" ] >> /tmp/serverbk.log
then
mkdir $savepath >> /tmp/serverbk.log
fi

# tar up the files we want into the backup temp
tar -zcf ${backuptemp}files.tar.gz $location1 $location2 $location3 $location4 >> /tmp/serverbk.log

#dump the local mysql db into the backup temp
mysqldump --host=${mysqlhost} --user=${mysqluser} --all-databases --lock-tables --complete-insert --verbose --no-create-info --result-file=${backuptemp}mysqldumpdb$(date +%F).sql >> /tmp/serverbk.log
mysqldump --host=${mysqlhost} --user=${mysqluser} --all-databases --lock-tables --complete-insert --verbose --no-data --result-file=${backuptemp}mysqldumpnodata$(date +%F).sql >> /tmp/serverbk.log


#tar up the backup temp folder
echo "Creating tar ball"
tar -cvzf $savepath$filename $backuptemp >> /tmp/serverbk.log
echo "tar ball created"

#connect the smb share to our mount point
if umount $mountpoint >> /tmp/serverbk.log
then
echo "NAS Share Unmounted" >> /tmp/serverbk.log
fi
if mount -t cifs -o username=$username,password=$password $sharepoint $mountpoint >> /tmp/serverbk.log
then
echo "NAS Share mounted" >> /tmp/serverbk.log
fi

# copy the tar (could also move it but whatever you like)
echo "Moving Backup to NAS" >> /tmp/serverbk.log
if rsync -avz $savepath$filename $mountpoint >> /tmp/serverbk.log
then
echo "Backup of First Server Complete" >> /tmp/serverbk.log
else
echo "Backup of First Server Incomplete" >> /tmp/serverbk.log
fi

# disconnect the share
umount $mountpoint >> /tmp/serverbk.log

if umount $mountpoint2 >> /tmp/serverbk.log
then
echo "NAS Second Share Unmounted" >> /tmp/serverbk.log
fi
if mount -t cifs -o username=$username2,password=$password2 $sharepoint2 $mountpoint2 >> /tmp/serverbk.log
then
echo "NAS Second Share mounted" >> /tmp/serverbk.log
fi
if rsync -avz $savepath2 $mountpoint2 >> /tmp/serverbk.log
then
echo "Backup of Second Server Complete" >> /tmp/serverbk.log
else
echo "Backup of Second Server Incomplete" >> /tmp/serverbk.log
fi
mv /web_backup/* /web_server/
umount $mountpoint2 >> /tmp/serverbk.log
echo "Backup Finished at $(date +%c)" >> /tmp/serverbk.log




#all done
cat /tmp/serverbk.log | mail -s Server_backup support@example.com
 
Old 07-09-2008, 09:27 AM   #4
matthewg42
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Do you get any email notifications of errors for the user whose crontab the script is called from? If so, what?

You should check where the programs which are used in the script are located (do a "which" for each one). If any of them are outside the PATH specified in the /etc/crontab, then you will need to adjust your script to add the proper directories to the PATH.

As far as I can tell, this is all the external programs which the script calls:
  • mkdir
  • hostname
  • tar
  • mysqldump
  • mount
  • umount
  • rsync

Last edited by matthewg42; 07-09-2008 at 09:30 AM.
 
Old 07-09-2008, 10:43 AM   #5
mahmoud
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no i dont get any errors or emails from cron or that the script has finished or there was an error while running the script
also i have a similar script running on my other server and that works fine and they both have the same OS installed
also im running the script as root and all the paths are in the /etc/crontab/
MAILTO=support@example.net
5 1 * * Mon-Fri /root/working
what is really funny is the script runs when i do it manually
is it possible that the rysnc is taking so long over 8 hours to rsync 9G of data
 
Old 07-09-2008, 10:59 AM   #6
matthewg42
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Is it even running? Try changing the first line of the script to "#/bin/sh -v -x", and then append this to the crontab line which calls the script:
Code:
> /your/home/dir/cron.log 2>&1
After the cronjob has run, post the cron.log file here.
 
Old 07-10-2008, 03:03 AM   #7
mahmoud
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Hi
This is the output of the cron.log
Quote:
# cat cron.log
/bin/sh: - : invalid option
Usage: /bin/sh [GNU long option] [option] ...
/bin/sh [GNU long option] [option] script-file ...
GNU long options:
--debug
--debugger
--dump-po-strings
--dump-strings
--help
--init-file
--login
--noediting
--noprofile
--norc
--posix
--protected
--rcfile
--restricted
--verbose
--version
--wordexp
Shell options:
-irsD or -c command or -O shopt_option (invocation only)
-abefhkmnptuvxBCHP or -o option
 
Old 07-10-2008, 03:22 AM   #8
Mr. C.
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Quote:
Originally Posted by matthewg42 View Post
Is it even running? Try changing the first line of the script to "#/bin/sh -v -x", and then ...
/bin/sh does not accept those arguments. Either the interpreter needs to change to /bin/bash or the OP should use:

set -v -x

inside the script. This is what is causing the error output above.
 
Old 07-10-2008, 03:27 AM   #9
matthewg42
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Hmm strange. There should be no space between the "-" and the "v" or "x". Perhaps you made a typo when editing the script? The first line of the script should look like this:
Code:
#!/bin/sh -v -x
If that is how you have it, then it must be some weird shell which doesn't support the -v and -x options (I thought these were part of the POSIX standard... Maybe not).

So then the question becomes "what shell is it?" Some shells like (bash) support the --version option, which you can use like this (just do this in a terminal):
Code:
/bin/sh --version
Hopefully you will get some output like this which itentifies the shell:
Code:
GNU bash, version 3.2.39(1)-release (i486-pc-linux-gnu)
Copyright (C) 2007 Free Software Foundation, Inc.
Some shells don't support the --version option. For these, maybe the /bin/sh is a symlink to a different binary. For example, on my Ubuntu system:
Code:
 ls -lF /bin/sh
shows that /bin/sh is actually "dash":
Code:
lrwxrwxrwx 1 root root 4 2008-03-25 07:51 /bin/sh -> dash

Last edited by matthewg42; 07-10-2008 at 03:27 AM. Reason: ironic typo in the word "typo"
 
Old 07-10-2008, 03:35 AM   #10
Mr. C.
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There are so many variants of shell (/bin/sh) that it is very difficult to keep up current distros.

One one system:

/bin/sh --version
GNU bash, version 2.05b.0(1)-release (i386-redhat-linux-gnu)
Copyright (C) 2002 Free Software Foundation, Inc.

on a NetBSD system:

$ /bin/sh --version
sh: Illegal option --

So, less here, is to assume least common denominator sometimes.
 
Old 07-10-2008, 03:35 AM   #11
matthewg42
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Quote:
Originally Posted by Mr. C. View Post
/bin/sh does not accept those arguments. Either the interpreter needs to change to /bin/bash or the OP should use:

set -v -x

inside the script. This is what is causing the error output above.
Aha, that'll be it then.

So to the original poster:
Add this line as the second line of the script:
Code:
set -v -x
 
Old 07-11-2008, 03:42 AM   #12
mahmoud
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here is the output
Quote:
rm -rf /backup*
+ rm -rf /backup /backuptmp
rm -fr /tmp/serverbk.log
+ rm -fr /tmp/serverbk.log

# set smb server and auth vars
sharepoint="//10.0.5.5/share"
+ sharepoint=//10.0.5.5/share
username="share"
+ username=user
password="passwd"
+ password=passwd

#Set sbm point for second share on NAS
sharepoint2="//10.0.5.5/share2"
+ sharepoint2=//10.0.5.5/
username2="user1"
+ username2=user1
password2="passwd"
+ password2=passwd

#set mysql details
mysqlhost="localhost"
+ mysqlhost=localhost
mysqlusername="root"
+ mysqlusername=root
#mysqlpasswd="mysqlpasswordhere"

#set which folder locations we want to backup, inc trailing slashes
#add more here and append to the appropriate tar line further down the script if needed

location1="/www/"
+ location1=/www/
location2="/home/"
+ location2=/home/
location3="/root/"
+ location3=/root/
location4="/opt/"
+ location4=/opt/

#set temp files and folders
backuptemp="/backuptmp/"
+ backuptemp=/backuptmp/
savepath="/backup/"
+ savepath=/backup/
savepath2="/web_backup/"
+ savepath2=/web_backup/
filename=$(hostname).backup.$(date +%F).tar.gz
hostname
++ hostname
date +%F
++ date +%F
+ filename=server.backup.2008-07-10.tar.gz
#filname2=$(5017).backup.$(date +%B%e).tar.gz
mountpoint="/mnt/nas/"
+ mountpoint=/mnt/nas/
mountpoint2="/mnt/nas2/"
+ mountpoint2=/mnt/nas2/
# make sure our working folders are present and accounted for

if [ ! -d "${backuptemp}" ] >> /tmp/serverbk.log
then
mkdir $backuptemp >> /tmp/serverbk.log
fi
+ '[' '!' -d /backuptmp/ ']'
+ mkdir /backuptmp/

if [ ! -d "${savepath}" ] >> /tmp/serverbk.log
then
mkdir $savepath >> /tmp/serverbk.log
fi
+ '[' '!' -d /backup/ ']'
+ mkdir /backup/

# tar up the files we want into the backup temp
tar -zcf ${backuptemp}files.tar.gz $location1 $location2 $location3 $location4 >> /tmp/serverbk.log
+ tar -zcf /backuptmp/files.tar.gz /www/ /home/ /root/ /opt/
tar: Removing leading `/' from member names
tar: Removing leading `/' from hard link targets
tar: /opt/zimbra/logger/db/mysql.sock: socket ignored
tar: /opt/zimbra/data/postfix/spool/public/cleanup: socket ignored
tar: /opt/zimbra/data/postfix/spool/public/showq: socket ignored
tar: /opt/zimbra/data/postfix/spool/public/flush: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/verify: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/cyrus: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/local: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/proxymap: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/error: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/bounce: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/defer: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/bsmtp: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/anvil: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/old-cyrus: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/uucp: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/smtp-amavis: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/virtual: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/trace: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/rewrite: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/maildrop: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/scache: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/lmtp: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/smtp: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/tlsmgr: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/ifmail: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/discard: socket ignored
tar: /opt/zimbra/data/postfix/spool/private/relay: socket ignored
tar: /opt/zimbra/data/amavisd/amavisd.sock: socket ignored
tar: /opt/zimbra/cyrus-sasl-2.1.22.3z/state/mux: socket ignored
tar: /opt/zimbra/db/mysql.sock: socket ignored


#dump the local mysql db into the backup temp
mysqldump --host=${mysqlhost} --user=${mysqluser} --all-databases --lock-tables --complete-insert --verbose --no-create-info --result-file=${backuptemp}mysqldumpdb$(date +%F).sql >> /tmp/serverbk.log
date +%F
++ date +%F
+ mysqldump --host=localhost --user= --all-databases --lock-tables --complete-insert --verbose --no-create-info --result-file=/backuptmp/mysqldumpdb2008-07-10.sql
-- Connecting to localhost...
-- Retrieving table structure for table columns_priv...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table db...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table func...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table help_category...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table help_keyword...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table help_relation...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table help_topic...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table host...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table proc...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table procs_priv...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table tables_priv...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table time_zone...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table time_zone_leap_second...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table time_zone_name...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table time_zone_transition...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table time_zone_transition_type...
-- Sending SELECT query...
-- Retrieving rows...
-- Retrieving table structure for table user...
-- Sending SELECT query...
-- Retrieving rows...
-- Disconnecting from localhost...
mysqldump --host=${mysqlhost} --user=${mysqluser} --all-databases --lock-tables --complete-insert --verbose --no-data --result-file=${backuptemp}mysqldumpnodata$(date +%F).sql >> /tmp/serverbk.log
date +%F
++ date +%F
+ mysqldump --host=localhost --user= --all-databases --lock-tables --complete-insert --verbose --no-data --result-file=/backuptmp/mysqldumpnodata2008-07-10.sql
-- Connecting to localhost...
-- Retrieving table structure for table columns_priv...
-- Skipping dump data for table 'columns_priv', --no-data was used
-- Retrieving table structure for table db...
-- Skipping dump data for table 'db', --no-data was used
-- Retrieving table structure for table func...
-- Skipping dump data for table 'func', --no-data was used
-- Retrieving table structure for table help_category...
-- Skipping dump data for table 'help_category', --no-data was used
-- Retrieving table structure for table help_keyword...
-- Skipping dump data for table 'help_keyword', --no-data was used
-- Retrieving table structure for table help_relation...
-- Skipping dump data for table 'help_relation', --no-data was used
-- Retrieving table structure for table help_topic...
-- Skipping dump data for table 'help_topic', --no-data was used
-- Retrieving table structure for table host...
-- Skipping dump data for table 'host', --no-data was used
-- Retrieving table structure for table proc...
-- Skipping dump data for table 'proc', --no-data was used
-- Retrieving table structure for table procs_priv...
-- Skipping dump data for table 'procs_priv', --no-data was used
-- Retrieving table structure for table tables_priv...
-- Skipping dump data for table 'tables_priv', --no-data was used
-- Retrieving table structure for table time_zone...
-- Skipping dump data for table 'time_zone', --no-data was used
-- Retrieving table structure for table time_zone_leap_second...
-- Skipping dump data for table 'time_zone_leap_second', --no-data was used
-- Retrieving table structure for table time_zone_name...
-- Skipping dump data for table 'time_zone_name', --no-data was used
-- Retrieving table structure for table time_zone_transition...
-- Skipping dump data for table 'time_zone_transition', --no-data was used
-- Retrieving table structure for table time_zone_transition_type...
-- Skipping dump data for table 'time_zone_transition_type', --no-data was used
-- Retrieving table structure for table user...
-- Skipping dump data for table 'user', --no-data was used
-- Disconnecting from localhost...


#tar up the backup temp folder
echo "Creating tar ball"
+ echo 'Creating tar ball'
Creating tar ball
tar -cvzf $savepath$filename $backuptemp >> /tmp/serverbk.log
+ tar -cvzf /backup/server.backup.2008-07-10.tar.gz /backuptmp/
tar: Removing leading `/' from member names
echo "tar ball created"
+ echo 'tar ball created'
tar ball created

#connect the smb share to our mount point
if umount $mountpoint >> /tmp/serverbk.log
then
echo "NAS Share Unmounted" >> /tmp/serverbk.log
fi
+ umount /mnt/nas/
umount: /mnt/nas/: not mounted
if mount -t cifs -o username=$username,password=$password $sharepoint $mountpoint >> /tmp/serverbk.log
then
echo "NAS Share mounted" >> /tmp/serverbk.log
fi
+ mount -t cifs -o username=user,password=passwd //10.0.5.5/share /mnt/nas/
+ echo 'NAS Share mounted'

# copy the tar (could also move it but whatever you like)
echo "Moving Backup to NAS" >> /tmp/serverbk.log
+ echo 'Moving Backup to NAS'
if rsync -avz $savepath$filename $mountpoint >> /tmp/serverbk.log
then
echo "Backup of First Server Complete" >> /tmp/serverbk.log
else
echo "Backup of First Server Incomplete" >> /tmp/serverbk.log
fi
+ rsync -avz /backup/server.backup.2008-07-10.tar.gz /mnt/nas/
+ echo 'Backup of First Server Complete'

# disconnect the share
umount $mountpoint >> /tmp/serverbk.log
+ umount /mnt/nas/

if umount $mountpoint2 >> /tmp/serverbk.log
then
echo "NAS Second Share Unmounted" >> /tmp/serverbk.log
fi
+ umount /mnt/nas2/
umount: /mnt/nas2/: not mounted
if mount -t cifs -o username=$username2,password=$password2 $sharepoint2 $mountpoint2 >> /tmp/serverbk.log
then
echo "NAS Second Share mounted" >> /tmp/serverbk.log
fi
+ mount -t cifs -o username=user1,password=passwd1 //10.0.5.5/share1 /mnt/nas2/
+ echo 'NAS Second Share mounted'
if rsync -avz $savepath2 $mountpoint2 >> /tmp/serverbk.log
then
echo "Backup of Second Server Complete" >> /tmp/serverbk.log
else
echo "Backup of Second Server Incomplete" >> /tmp/serverbk.log
fi
+ rsync -avz /web_backup/ /mnt/nas2/
+ echo 'Backup of Second Server Complete'
mv /web_backup/* /web_server/
+ mv '/web_backup/*' /web_server/
mv: cannot stat `/web_backup/*': No such file or directory
umount $mountpoint2 >> /tmp/serverbk.log
+ umount /mnt/nas2/
echo "Backup Finished at $(date +%c)" >> /tmp/serverbk.log
date +%c
++ date +%c
+ echo 'Backup Finished at Thu 10 Jul 2008 16:00:45 BST'
#all done

Last edited by mahmoud; 07-11-2008 at 03:48 AM.
 
Old 07-11-2008, 04:00 AM   #13
Mr. C.
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That's a lot of output. It did something. Perhaps you can look through it line by line to see if there are any problems.

As an aside, this is a bit dangerous:

rm -rf /backup*

if you accidentally place a space between the p and the *, you will lose your entire system. While this is very unlikely, it is just too catastrophic if it does happen. In general:

1) don't place working stuff in /
2) be very careful with wildcards, esp with rm -rf.
 
Old 07-11-2008, 04:17 AM   #14
matthewg42
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When you say it stopped working, what do you mean? What do you expect to see which you do not?

Also, have a look at the /tmp/serverbk.log and see if you can see any error or failure messages in there.
 
Old 07-11-2008, 06:42 AM   #15
mahmoud
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the out put happened when i ran the script in the CLI
nothing happens when the crontab runs it
the serverbk.log file will be empty nothing in it its really confusing me as well
 
  


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