open-consul/test/bin/cluster.bash

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#!/bin/bash
#
# Script for bringing up an N node consul cluster
# on the local machine on different ports.
#
# The first node is listening on the default ports
# so that the command line tool works.
#
# Examples:
#
# 3-node cluster:
#
# $ consul-cluster.bash
# $ consul-cluster.bash 3
#
# 5-node cluster with specific consul version:
#
# $ consul-cluster.bash 5 ~/consul-0.7.5/consul
config() {
local port=${1:-0}
local name="consul${port}"
local nodeid=$(printf "00000000-0000-0000-0000-%012d" $port)
local path="$DIR/${name}"
cat << EOF > "${path}/a.json"
{
"server" : true,
"node_id" : "${nodeid}",
"node_name" : "${name}",
"data_dir" : "${name}/data",
"pid_file" : "${name}/pid",
"bind_addr" : "127.0.0.1",
"retry_join" : ["127.0.0.1:8301","127.0.0.1:8304","127.0.0.1:8307"],
"bootstrap_expect" : ${N},
"ports" : {
"http" : $((8500 + $port)),
"dns" : $((8600 + $port)),
"server" : $((8300 + 3*$port)),
"serf_lan" : $((8301 + 3*$port)),
"serf_wan" : $((8302 + 3*$port)),
"rpc" : $((8400 + $port))
}
}
EOF
}
trap cleanup EXIT TERM KILL
jobs=
cleanup() {
[ "$jobs" == "" ] || kill $jobs
[ "$CLEANDIR" == "y" -a "$DIR" != "" ] && rm -rf "$DIR"
}
run() {
local port=$1
local name=consul${port}
local path="$DIR/${name}"
rm -rf "${path}"
mkdir -p "${path}"
config $port
2017-06-08 12:06:10 +00:00
( $CONSUL agent -config-dir "${path}" 2>&1 | tee "${path}/log" ; echo "Exit code: $?" >> "${path}/log" ) &
jobs="$jobs $!"
}
N=3
CONSUL=$(which consul)
CLEANDIR=y
SLEEP=y
while test $# -gt 0 ; do
case "$1" in
-d|--dir)
shift
DIR=$1
CLEANDIR=n
shift
;;
-n|--nodes)
shift
N=$1
shift
;;
-q|--quick)
shift
SLEEP=n
;;
-x|--consul)
shift
CONSUL=$1
shift
;;
*)
echo "Usage: $(basename $0) [-n nodes] [-x consul] [-d dir]"
echo ""
echo " -h, --help brief help"
echo " -d, --dir temp dir path to the temp directory, default is $DIR"
echo " -n, --nodes nodes number of nodes to start, default is $N"
echo " -q, --quick do not wait during startup"
echo " -x, --consul consul consul binary, default is $CONSUL"
exit 0
;;
esac
done
[ "$DIR" == "" ] && DIR=$(mktemp -d /tmp/consul-cluster-XXXXXXX)
echo "Starting $N node cluster. exe=$CONSUL data=$DIR"
[ "$CLEANDIR" == "y" ] && echo "Data files will be removed"
echo "Stop with CTRL-C"
echo ""
[ "$SLEEP" == "y" ] && sleep 3
for ((i=0 ; i < N ; i++)) ; do run $i ; done
wait