デプロイツールを使う程でもないときの git pull するだけのデプロイスクリプト

deploy.sh

#!/bin/sh

TARGET='staging'
APPDIR='~/app'
BRANCH='master'

while getopts :bdt: OPT
do
  case $OPT in
    'b' ) BRANCH="$OPTARG" ;;
    'd' ) APPDIR="$OPTARG" ;;
    't' ) TARGET="$OPTARG" ;;
      * ) echo "Usage: `basename $0` [-t TARGET] [-d APPDIR] [-b BRANCH]" 1>&2
          exit 1 ;;
  esac
done

case $TARGET in
  'staging' ) HOSTS=( app-stg-web-1 app-stg-web-2 ) ;;
  * ) echo "Undefined target '${TARGET}'." 1>&2
      exit 1 ;;
esac

for HOST in ${HOSTS[@]}; do
  REMOTE_BRANCH=`ssh ${HOST} "cd ${APPDIR} && git rev-parse --abbrev-ref HEAD"`
  if [ $BRANCH != $REMOTE_BRANCH ]; then
    echo "Oops, ${HOST} branch is ${REMOTE_BRANCH}." 1>&2
    exit 1
  fi
done

for HOST in ${HOSTS[@]}; do
  ssh $HOST "cd ${APPDIR} && git pull"
done