make_manifests

#!/bin/bash

usage() {
	echo "make_manifests: helper script to manifests for clustered master nodes"
	echo
	echo "usage: make_manifests <host-ip> [host-ip...]"
}

if ! (( $# )); then
	echo "No host ips provided"
	usage
	exit 1
fi

initial_cluster=
etcd_servers=
sep=
i=0
for ip in "$@"; do
	(( i++ ))
	printf -v initial_cluster "%s%setcd-%d=http://%s:2380" "$initial_cluster" "$sep" "$i" "$ip"
	printf -v etcd_servers "%s%shttp://%s:2379" "$etcd_servers" "$sep" "$ip"
	sep=,
done

i=0
for ip in "$@"; do
	(( i++ ))
	replacements=(
		-e 's|<masters>|'"$#"'|g'
		-e 's|<node-number>|'"$i"'|g'
		-e 's|<host-ip>|'"$ip"'|g'
		-e 's|<initial-cluster>|'"$initial_cluster"'|g'
		-e 's|<etcd-servers>|'"$etcd_servers"'|g'
	)
	sed "${replacements[@]}" etcd-bootstrap.yaml.t > "etcd-bootstrap:$ip.yaml"
	sed "${replacements[@]}" etcd.yaml.t > "etcd:$ip.yaml"
	sed "${replacements[@]}" kube-apiserver.yaml.t > "kube-apiserver:$ip.yaml"
done