09-24-2009
Quote:
Originally Posted by
chakrapani
ok One very important thing; even though the script looks complete it may not be ... you need to make sure that it runs on your system .. Shell scripts have a bad habit of behaving differently on every system ... So I prefer to write the script on system direclty.
My script explanation
First few lines are defn ...
The function called laststatus checks the last status of the VPN. The idea is script runs every 5 mins and will email only change of status not DOWN every five mins when down ; so the function gets a parameter say "UP" or "DOWN" when called and will return 1 or 0 based on what is there in the statusfile.
Example: function is called with DOWN
laststatus "DOWN" then it will grep the status file to see if it is was DOWN when it checked last time if the status was DOWN then it is suppose to tell main prg not to send email because there is no change .
In the main prg we check if VPN status is really down or not and make decisions.
Now since I saw that you had two logs called VPNLOG and MONLOG ... I add them. Only difference is VPNLOG is overwritten every 5 mins when script is called from cron. And MONLOG will be appended with status of this script also.
I guess you need to still fix the script to work on your system ... let forum know if this worked ..
Hi chakrapani,
I executed the script you wrote in cron and named is as partner-vpn.sh. i did not disconnect the vpn..everytime i executed the script using ./partner-vpn or even if he script is executed by cron after every 5 minutes i get an email generated from the script "Partner VPN UP again, whereas the mail should be recieved only when the VPN is up after being down...
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LEARN ABOUT CENTOS
service
service(8) System Manager's Manual service(8)
NAME
service - run a System V init script
SYNOPSIS
service SCRIPT COMMAND [OPTIONS]
service --status-all
service --help | -h | --version
DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
directory set to /.
The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the
invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and
stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start
command.
service --status-all runs all init scripts, in alphabetical order, with the status command.
If the init script file does not exist, the script tries to use legacy actions. If there is no suitable legacy action found and COMMAND is
one of actions specified in LSB Core Specification, input is redirected to the systemctl. Otherwise the command fails with return code 2.
FILES
/etc/init.d
The directory containing System V init scripts.
ENVIRONMENT
LANG, TERM
The only environment variables passed to the init scripts.
SEE ALSO
chkconfig(8), ntsysv(8), systemd(1), systemctl(8), systemd.service(5)
Jan 2006 service(8)