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How would i schedule a job on ESX

 
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Top Forums UNIX for Dummies Questions & Answers How would i schedule a job on ESX
# 1  
Old 06-30-2010
How would i schedule a job on ESX
Hi I m using a machine for VMWARE setup.
machine details.
Code:
#uname -a
VMkernel testmachine.test.com 3.5.0 #1 SMP Release build-110271 Aug 12 2008 19:36:55 i686 unknown


the problem is i m not able to schedule a job using crontab as
crontab is not found on the machine.

Code:
~ # crontab -e
-ash: crontab: not found

current shell.
Code:
~ # echo $SHELL
/bin/ash

Even chsh is not working.
Code:
 chsh -l
-ash: chsh: not found

When checked in bin directory i found bash to be present over there . How would i change the shell ?
will changing the shell cause the crontab to be working?
Code:
~ # cd /bin
/bin # ls
ash                gpg                passwd             sfcbuuid
awk                grep               ping               sh
bash               groups             prop_of_instances  stat
busybox            gzip               ps                 tail
cat                head               rm                 ticket
cim-diagnostic.sh  kill               scp                uname
cp                 less               sfcbdump           vim-cmd
cut                login              sfcbmof            vmware
dbclient           ls                 sfcbmofpp          vmware-vimdump
dropbearconvert    lsi_log            sfcbrepos          vmx
dropbearkey        mkdir              sfcbstage          wbemcat
echo               openssl            sfcbunstage        xmltest

Last edited by pludi; 06-30-2010 at 03:51 AM..
# 2  
Old 06-30-2010
Bash and crontab have 2 things in common: they run on most Unices, and both are written (largely) in C. That's it.

Searching on the net I found this. Basically, you have to edit /var/spool/cron/crontabs/root directly.
This User Gave Thanks to pludi For This Post:
pinga123
# 3  
Old 06-30-2010
Quote:
Originally Posted by pludi
Bash and crontab have 2 things in common: they run on most Unices, and both are written (largely) in C. That's it.

Searching on the net I found this. Basically, you have to edit /var/spool/cron/crontabs/root directly.
I could not able to see the link given as it is blocked in our office environment.

However i m still not able to schedule the job. m i missing anything?
I checked the current timing
Code:
/sbin # date
Wed Jun 30 05:27:48 UTC 2010

then modified the root file to run the coyfile.sh
Code:
/sbin # cat /var/spool/cron/crontabs/root
#syntax : minute hour day month dayofweek command
01 01 * * * /sbin/tmpwatch.sh
01 * * * * /sbin/auto-backup.sh #first minute of every hour (run every hour)
00,10,20,30,40,50 * * * * /sbin/decodeSel.sh #Every 10 minutes, translate the latest IPMI SEL data
30 05 30 6 wed /sbin/copyfile.sh #Testing purpose

content of my script
Code:
# cat copyfile.sh
#!/bin/ash
touch test.txt

I m not able to see the test.txt created in /sbin directory .

Please guide.
# 4  
Old 06-30-2010
Since you can't access that site, here's the relevant part:
Quote:
  1. Edit /var/spool/cron/crontabs/root
  2. Add the line (all on one line)
    5 0 * * * /full/path/to/script arguments/with/full/path > /full/path/to/logfile 2>&1
  3. Run the command "cat /var/run/crond.pid"
    That will print the process number of the running crond, such as 12345
  4. Run the command "kill 12345"
    where "12345" should be replaced with the number output by the previous command
Note that this won't survive a reboot of the ESX server. You'll have to edit /etc/rc.local for that.
# 5  
Old 06-30-2010
Quote:
Originally Posted by pludi
Since you can't access that site, here's the relevant part:
Note that this won't survive a reboot of the ESX server. You'll have to edit /etc/rc.local for that.
there is no such file named crond.pid.

Code:
cat /var/run/crond.pid

Content of /var/run
Code:
/var/run # ls
dcui.pid             slpd.pid             vmware-hostd-ticket
inetd.pid            syslogd.pid
sfcb-watchdog.pid    vmware

# 6  
Old 06-30-2010
There is a ps command in your /bin. There's a grep in your /bin. Put the two together:
Code:
# ps -ef | grep cron

The second column is the PID.

And you do know that this forums intent isn't to provide step-by-step guides for basic tasks like "research"?
 
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