welcome: please sign in

Diff for "MemberManual/WebApplications/NodeJs"

Differences between revisions 3 and 4
⇤ ← Revision 3 as of 2014-05-16 08:51:08 →
Size: 2121
Editor: MattCarberry
Comment: Added more to test install
← Revision 4 as of 2014-05-18 02:50:36 → ⇥
Size: 3489
Editor: MattCarberry
Comment: Finished it up hopefully
Deletions are marked like this. Additions are marked like this.
Line 13: Line 13:
 {{{#!highlight bash  {{{
Line 20: Line 20:
 {{{#!highlight bash  {{{
Line 27: Line 27:
 {{{#!highlight bash  {{{
Line 34: Line 34:
 {{{#!highlight bash  {{{
Line 53: Line 53:
 Configure your domain, modelling [[DomTool/Examples#mod_proxy|this example]]. This will foward from requests to your domain on navajos to the port that you requested on bog.
 		  Configure your domain, modelling [[DomTool/Examples#mod_proxy|this example]]. This will foward requests to your domain to the port that you requested on bog.

 Give it a test run
 {{{
 mcarberry@bog:~/public_web/sitename$ ./nodejs/bin/node hello_world.js
 }}}

 If it works, when you visit your domain name you should see the Hello Node.js message.

=== Write a Script to Start the Server ===
 Here's a script I use to start my Node.js server running Ghost. You'll need to use k5start (as I do) in order to make sure your server is able to maintain access to AFS. You should be able to modify this script to your needs with not too much effort.
 {{{#!highlight bash
#!/bin/bash
HOME=/afs/hcoop.net/user/m/mc/mcarberry
GHOSTROOT=$HOME/public_web/ghost/ghost-app
NODEROOT=$HOME/public_web/ghost/nodejs

NODE=$NODEROOT/bin/node

PIDFILE=$GHOSTROOT/ghost.pid

K5START="k5start -qtUf /etc/keytabs/user.daemon/mcarberry"

cd $GHOSTROOT

NODE_CONFIG_DIR=$GHOSTROOT

if (test -f $PIDFILE); then
  echo "PID File exists..."
  PID=`cat $PIDFILE 2> /dev/null`
  echo "Is previous server still running"
  kill -0 $PID 2> /dev/null
  if (test $? -ne 0); then
    echo "Nope, starting server"
    $K5START -b -c $PIDFILE -- $NODE $GHOSTROOT/index.js
  else
    echo "Yes, no need to start server"
    exit 0
  fi
else
  echo "Starting server"
  $K5START -b -c $PIDFILE -- $NODE $GHOSTROOT/index.js
fi
 }}}

=== Add a Reboot Rule to Crontab ===
 Request crontab access throught the portal, and set a rule such that your script will be run in the event of bog being rebooted.

What is Node.js

  • Node.js is an application server based off of Google's V8 Javascript Engine. Quite a few popular frameworks have popped up around Node.js such as AngularJS and Backbone.js.

How

Request a port

  • Request a ProxiedServer port on bog as described in FirewallRules

Get Node.js

  • Make a directory for your website 
    mcarberry@bog:~$ mkdir ~/public_web/sitename
mcarberry@bog:~$ mkdir ~/public_web/sitename/nodejs
mcarberry@bog:~$ cd ~/public_web/sitename
    Download Node.js 
    mcarberry@bog:~/public_web/sitename$ wget http://nodejs.org/dist/v0.10.26/node-v0.10.26.tar.gz
mcarberry@bog:~/public_web/sitename$ tar -xf node-v0.10.26.tar.gz 
mcarberry@bog:~/public_web/sitename$ cd node-v0.10.26/

Build Node.js

  • mcarberry@bog:~/public_web/sitename/node-v0.10.26$ ./configure 
mcarberry@bog:~/public_web/sitename/node-v0.10.26$ make
mcarberry@bog:~/public_web/sitename/node-v0.10.26$ make install DESTDIR=~/public_web/sitename/nodejs
    Cleanup Install Directory 
    mcarberry@bog:~/public_web/sitename/node-v0.10.26$ cd ../nodejs/
mcarberry@bog:~/public_web/sitename/nodejs$ cp -r usr/local/* .
mcarberry@bog:~/public_web/sitename/nodejs$ rm -r usr
mcarberry@bog:~/public_web/sitename/nodejs$ cd ..
mcarberry@bog:~/public_web/sitename$ rm -r node-v0.10.26/

Test Install

  • Change the port in this script (gleaned from here) to the one requested in the firewall rules and place it in ~/public_web/sitename/. 

       1 var http = require('http');
   2 http.createServer(function (req, res) {
   3   res.writeHead(200, {'Content-Type': 'text/plain'});
   4   res.end('Hello Node.js\n');
   5 }).listen(8124, "127.0.0.1");
   6 console.log('Server running at http://127.0.0.1:8124/');

    Configure your domain, modelling this example. This will foward requests to your domain to the port that you requested on bog. Give it a test run 

     mcarberry@bog:~/public_web/sitename$ ./nodejs/bin/node hello_world.js
    If it works, when you visit your domain name you should see the Hello Node.js message.

Write a Script to Start the Server

  • Here's a script I use to start my Node.js server running Ghost. You'll need to use k5start (as I do) in order to make sure your server is able to maintain access to AFS. You should be able to modify this script to your needs with not too much effort. 
       1 #!/bin/bash
   2 HOME=/afs/hcoop.net/user/m/mc/mcarberry
   3 GHOSTROOT=$HOME/public_web/ghost/ghost-app
   4 NODEROOT=$HOME/public_web/ghost/nodejs
   5 
   6 NODE=$NODEROOT/bin/node
   7 
   8 PIDFILE=$GHOSTROOT/ghost.pid
   9 
  10 K5START="k5start -qtUf /etc/keytabs/user.daemon/mcarberry"
  11 
  12 cd $GHOSTROOT
  13 
  14 NODE_CONFIG_DIR=$GHOSTROOT
  15 
  16 if (test -f $PIDFILE); then
  17   echo "PID File exists..."
  18   PID=`cat $PIDFILE 2> /dev/null`
  19   echo "Is previous server still running"
  20   kill -0 $PID 2> /dev/null
  21   if (test $? -ne 0); then
  22     echo "Nope, starting server"
  23     $K5START -b -c $PIDFILE -- $NODE $GHOSTROOT/index.js
  24   else
  25     echo "Yes, no need to start server"
  26     exit 0
  27   fi  
  28 else
  29   echo "Starting server"
  30   $K5START -b -c $PIDFILE -- $NODE $GHOSTROOT/index.js
  31 fi

Add a Reboot Rule to Crontab

  • Request crontab access throught the portal, and set a rule such that your script will be run in the event of bog being rebooted.

MemberManual/WebApplications/NodeJs (last edited 2014-05-18 02:50:36 by MattCarberry)