I would appreciate a recomendation on a way to go - shell script, perl
script, other? - for the following issue. I am setting up firewalls using
ipchains, which I have working quite nicely (It was worth the hassle of
learning how to compile the kernel). For reliability reasons I want to set
up two machines with failover. I was thinking that I could use cron to
automate the following:
1. On active firewall ipchains-save every x minutes to make sure of
up-to-date config.
2. On active firewall copy saved config to backup firewall (up but not
running ipchains).
3. On backup firewall check that ipchains is running on active every x
secs. Start ipchains from most recent config if not.
4. Send alert if failover occurs.
My questions are - Does this make linux-sense and if so any syntax, scripts
or boot-strap help would be appreciated. I've always believed in not
reinventing the wheel. I will RTFM if someone will tell which is the
correct FM for these circumstances.
Thanks in advance.
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