irule trigger external script

hi 2cushty,

 

i have an ugly solution...

 

1.- in the irule use the log command to send a specific magic message to the syslog ltm:

 

log local0. "launch_my_script_xxx"

 

 

2.-in the LTM write a shell (myscript.sh) or perl script to create a pipe (/var/log/myscript.pipe) and read it waiting for the magic message

 

 

3.-in the LTM add this lines to the OS syslog configuration /etc/syslog-ng/syslog-ng.conf

 

filter my_magic_message {

 

match("launch_my_script_xxx");

 

};

 

destination d_myscript {

 

pipe("/var/log/myscript.pipe");

 

};

 

 

log {

 

source(s_syslog_pipe);

 

filter(f_local0);

 

filter(my_magic_message);

 

destination(d_myscript);

 

};

 

 

start your script and restart syslog-ng service

 

 

4.-when your script read the magic message on the pipe it must start the logic connecting via ssh to the stanby servers and sending the commands to start or stop any service necesary .

 

5.-in the LTM add your script to /etc/rc.local to startup after reboot the box

 

6.- excuse my english...