Changing qpidd to rabbitmq for Openstack

Stopping qpidd on all server

service qpidd stop

chkconfig qpidd off

Installing packages

yum install ntp rabbitmq-server

Configuring Cluster

On Controller1

yum install ntp rabbitmq-server

chown rabbitmq:rabbitmq /var/lib/rabbitmq/*

chown rabbitmq:rabbitmq /var/lib/rabbitmq/.erlang.cookie

/etc/init.d/rabbitmq-server restart

scp /var/lib/rabbitmq/.erlang.cookie root@controller2:/var/lib/rabbitmq/

On Controller2

yum install ntp rabbitmq-server

yum install ntp rabbitmq-server

rabbitmqctl stop_app

rabbitmqctl join_cluster rabbit@controller1

rabbitmqctl start_app

rabbitmqctl cluster_status

Edit the configuration Files

Comment out the Qpidd entries In all the configuration and enter the below details. As Rabbitmq is default message broker other entries are not needed.

rabbit_host = controller

In Both the controller set the rabbitmq policy as below

rabbitmqctl set_policy HA '^(?!amq\.).*' '{"ha-mode": "all"}'

Configure HA using Corosync and pacemaker

Opening needed Ports in Iptables if We are using IPtables
/etc/sysconfig/iptables. Towards the end of the file, but before any REJECT statements, we add the following lines:
-A INPUT -p udp -m state --state NEW -m multiport --dports 5404,5405 -j ACCEPT
-A INPUT -m tcp -p tcp --dport 7788 -j ACCEPT
-A INPUT -m tcp -p tcp --dport 3306 -j ACCEPT

Installing modules
yum -y install wget
rpm -Uvh http://elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm
yum -y install drbd84-utils kmod-drbd84 --enablerepo=elrepo
yum -y install pacemaker corosync cluster-glue

wget -P /etc/yum.repos.d/ http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-6/network:ha-clustering:Stable.repo
yum install crmsh

Configure Corosync 

vi /etc/corosync/corosync.conf
totem {
version: 2
secauth: off
threads: 0
interface {
ringnumber: 0
bindnetaddr: 10.0.0.0
mcastaddr: 226.94.1.1
mcastport: 5405
ttl: 1
}
}

logging {
fileline: off
to_stderr: no
to_logfile: yes
to_syslog: yes
logfile: /var/log/cluster/corosync.log
debug: off
timestamp: on
logger_subsys {
subsys: AMF
debug: off
}
}

amf {
mode: disabled
}

service {
        # Load the Pacemaker Cluster Resource Manager
        ver:       1
        name:      pacemaker
}

aisexec {
        user:   root
        group:  root
}


chkconfig --level 3 corosync on
service corosync start
chkconfig --level 3 pacemaker on
service pacemaker start

Checking the Cluster Connectivity
corosync-objctl runtime.totem.pg.mrp.srp.members

Check the service and cluster status
crm_mon -1


Configuring the cluster
>>crm configure
property no-quorum-policy="ignore" pe-warn-series-max="1000" pe-input-series-max="1000" pe-error-series-max="1000" cluster-recheck-interval="5min"
property stonith-enabled=false
commit

Adding a Cluster server for common IP (VIP)
>>crm configure
primitive p_api-ip ocf:heartbeat:IPaddr2 params ip="10.0.0.199" cidr_netmask="24" op monitor interval="30s"
commit

Now we need to configure the needed services in the CRM.

  

Checking loadspeed of a Site Using phantomjs

Using  phantomjs to check different parameters of a site.

 Installing the module
sudo yum install fontconfig freetype libfreetype.so.6 libfontconfig.so.1 libstdc++.so.6

wget https://bitbucket.org/ariya/phantomjs/downloads/phantomjs-1.9.7-linux-i686.tar.bz2
tar jxvf phantomjs-1.9.7-linux-i686.tar.bz2
mv phantomjs-1.9.7-linux-x86_64 phantomjs

export PATH=$PATH:/root/phantomjs/bin/

In the  phantomjs directory there are examples for js script. We use a test script provided by them for checking the load speed of site. 

phantomjs loadspeed.js http://www.adminz.in

Page title is Linux Conquering Cloud

Loading time 4559 msec

Basic examples

• arguments.js shows the arguments passed to the script
• countdown.js prints a 10 second countdown
• echoToFile.js writes the command line arguments to a file
• fibo.js lists the first few numbers in the Fibonacci sequence
• hello.js displays the famous message
• module.js and universe.js demonstrate the use of module system
• outputEncoding.js displays a string in various encodings
• printenv.js displays the system's environment variables
• scandir.js lists all files in a directory and its subdirectories
• sleepsort.js sorts integers and delays display depending on their values
• version.js prints out PhantomJS version number
• page_events.js prints out page events firing: useful to better grasp page.on* callbacks

Rendering/rasterization

• colorwheel.js creates a color wheel using HTML5 canvas
• rasterize.js rasterizes a web page to image or PDF
• rendermultiurl.js renders multiple web pages to images
• technews.js captures Google News as a PNG image

Page automation

• direction.js uses Google Maps to print driving direction
• follow.js shows the number of followers of some Twitter accounts
• imagebin.js uploads an image to imagebin.org
• injectme.js injects itself into a web page context
• ipgeocode.js deduces the location via IP geocoding
• movies.js lists movies from kids-in-mind.com
• phantomwebintro.js uses jQuery to read #intro element text from phantomjs.org
• pizza.js uses yelp.com to find pizza places in Mountain View
• seasonfood.js displays the BBC seasonal food list
• tweets.js displays the most recent tweets
• unrandomize.js modifies a global object at page initialization
• waitfor.js waits until a test condition is true or a timeout occurs

Network

• detectsniff.js detects if a web page sniffs the user agent
• loadspeed.js computes the loading speed of a web site
• netlog.js dumps all network requests and responses
• netsniff.js captures network traffic in HAR format
• post.js sends an HTTP POST request to a test server
• postserver.js starts a web server and sends an HTTP POST request to it
• server.js starts a web server and sends an HTTP GET request to it
• serverkeepalive.js starts a web server which answers in plain text
• simpleserver.js starts a web server which answers in HTML