On 13/03/07, Karl R. Balsmeier <karl@xxxxxxxxxxxxxx> wrote:
I am the only user on the box, -this is all part of the %post element of
a Kickstart file. No one's on there, heh. But I see what you mean. If
this were not the only cron job on the machine, i'd probably entertain
the single-file/single-job tactic.
This particular question was aimed at adding the final line in a
kickstart post-install script, e.g. modifying crontab in an automatic
way to complete a given server build. Specifically the local changes a
system gets to make it ready for Nagios monitoring, prior, I needed to
manually visit all the machines i'd built and crontab -e. But then a
phone rings, or a pager goes off, or a human appears, wanting something,
heh. Automatic is the way.
I use include statements RCS and 'here' documents to accomplish this
sort of thing so I can have local customisations per-host but also a
log of the changes in revision control.
So I'd have something like a centos4-install-ks.cfg called via PXE and
in that...
# Setup users and their authorized_keys
%include /mnt/ks/kickstart/include/users-and-keys.cfg
# Setup secure SSHD configuration
%include /mnt/ks/kickstart/include/secure-sshd.cfg
# Setup Sudo
%include /mnt/ks/kickstart/include/sudo.cfg
# Setup Nagios Remote Plugin Execution
%include /mnt/ks/kickstart/include/nagios-nrpe.cfg
And in each of those, nagios-nrpe.cfg for example something like...
# Install and setup nagios configuration
yum -y install nagios-nrpe
mkdir -p /etc/nagios/RCS
mkdir -p /etc/xinetd.d/RCS
ci -t-'Nagios Remote Plugin Exection configuration.' -u /etc/nagios/nrpe.cfg
ci -t-'Nagios NRPE xinetd configuration.' -u /etc/xinetd.d/nrpe
co -l /etc/nagios/nrpe.cfg
co -l /etc/xinetd.d/nrpe
cat <<EOF > /etc/nagios/nrpe.cfg
#
# Nagios Remote Plugin Exection configuration.
#
# \$Id\$
#
# FILE UNDER RCS, DO NOT EDIT WITHOUT CHECKING OUT!!!
server_port=5666
# allowed_hosts=127.0.0.1
nrpe_user=nagios
nrpe_group=nagios
dont_blame_nrpe=0
debug=0
command_timeout=60
command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20
command[check_disk1]=/usr/lib/nagios/plugins/check_disk -w 20 -c 10 -p
/dev/mapper/vg00-lv00
command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200
EOF
cat <<EOF > /etc/xinetd.d/nrpe
# default: off
# description: NRPE (Nagios Remote Plugin Executor)
service nrpe
{
flags = REUSE
type = UNLISTED
port = 5666
socket_type = stream
wait = no
user = nagios
group = nagios
server = /usr/sbin/nrpe
server_args = -c /etc/nagios/nrpe.cfg --inetd
log_on_failure += USERID
disable = no
only_from = 127.0.0.1 X.X.X.X X.X.X.X
}
EOF
ci -m'Kickstart: Setting up default NRPE configuration.' -u /etc/nagios/nrpe.cfg
ci -m'Kickstart: Setting up default NRPE Xinetd configuration.' -u
/etc/xinetd.d/nrpe
# vim:sb:ai:sw=4:expandtab
Will.
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