openshift-diy-nodejs-redis

Thanks for the great work by razorinc and creationix, this repo let you test Node.js (v0.8.6 and above) or io.js (v1.0.0 or above) with Redis (as found in here ) in a OpenShift DIY application. For Node.js, it will first check for pre-compiled linux version, then compile from source if not found. For io.js, this script only support version that have pre-compiled binary. Redis will be compiled from source code. Subsequent push will skip source code compile unless a new version is specified.

node-supervisor is used to automatically restart the node.js app if somehow crashed.

@Feb 05, 2015: Note that hiredis-node 0.1.17 doesn't support io.js yet!

Usage

Create an DIY app

rhc app create -t diy-0.1 -a yourapp

Add this repository

cd yourapp
git remote add nodejsRedis -m master git://github.com/eddie168/openshift-diy-nodejs-redis.git
git pull -s recursive -X theirs nodejsRedis master

Edit config_diy.json then push the repo to openshift

git push

If pre-compiled node.js binary is not available, first push will take a while to finish.

You can specify the node.js script to start with in package.json as described here.

Check the end of the message for io.js/node.js and Redis version:

remote: Starting DIY cartridge
remote: Node Version:
remote: { http_parser: '2.5.0',
remote:   node: '4.0.0',
remote:   v8: '4.5.103.30',
remote:   uv: '1.7.3',
remote:   zlib: '1.2.8',
remote:   ares: '1.10.1-DEV',
remote:   modules: '46',
remote:   openssl: '1.0.2d' }
remote: Redis Version:
remote: redis-cli 3.0.4
remote: nohup supervisor server.js >/var/lib/openshift/xxxxxxxxxxxxxxxxxx/app-root/logs/server.log 2>&1 &

In this case it is node.js v4.0.0 and redis 3.0.4

To check is redis working

rhc tail -a yourapp

You should see something like this in app-root/logs/server.log

Reply: OK
Reply: 0
Reply: 0
2 replies:
    0: hashtest 1
    1: hashtest 2

You can find io.js/node.js app's log at $OPENSHIFT_DIY_LOG_DIR/server.log. Subsequent push will rename the log file with a time stamp before overwritten. The same goes to Redis log file and can be found at $OPENSHIFT_DIY_LOG_DIR/redis.log.

Now open your openshift app in browser and you should see the standard openshift sample page. Enjoy!!

Settings

Edit config_diy.json

{
  "nodejs": {
    "use_iojs": true,
    "version": "v1.1.0",
    "removeOld": true
  },
  "redis": {
    "version": "2.8.19",
    "port": 16379,
    "loglevel": "notice",
    "removeOld": true
  }
}

• nodejs.use_iojs: use io.js instead of node.js
• nodejs.version: change io.js/node.js version (keep the v letter in front)
• nodejs.removeOld: delete previous installed io.js/node.js binarys
• redis.version: change redis version
• redis.port: port used by redis (Refer to here)
• redis.loglevel: debug, verbose, notice, or warning
• redis.removeOld: delete previous installed redis binarys

commit and then push to reflect the changes to the OpenShift app.

Note that node.js v0.6.x won't work with this method.

Use Redis in Node.js

Environment variables REDIS_IP (which is based on $OPENSHIFT_DIY_IP when app is started) and REDIS_PORT are defined. Simply connect to Redis server with REDIS_IP and REDIS_PORT. For example, using node-redis

var redis = require("redis");
var redisClient = redis.createClient(process.env.REDIS_PORT, process.env.REDIS_IP);