Table of Contents

<note warning>Think twice before change</note>

<note tip>Before start validation hit this url https://198.46.49.167:8090/application.js and trust this certificate from testing machine</note>

Setting up An Application Server Centos 6.5 64bit

bbb_v1.0_setup

Current production Dns details

Public IP Address Dns Private IP Address Status
207.20.42.199 chat.learnexa.com10.166.152.241Live
207.20.42.195 prodcollab01.learnexa.com10.166.152.17 Live
207.20.42.198 *.learnexa.com10.166.152.246 Live
207.20.42.198 api.learnexa.com10.166.152.246 Live

Things to do for Haproxy server migration

Change public ip nat in Dimension data cloud

from

*.learnexa.com  207.20.42.198	= > 10.166.152.246

chat.learnexa.com 207.20.42.199 => 10.166.152.241
	 
to 

*.learnexa.com  207.20.42.198	= > 10.166.152.226

chat.learnexa.com 207.20.42.199 => 10.166.152.221

Need to check before new haproxy server live

ror machine ip details link

Step 1

login as expprodl prodapp04

cd crossbow/

./runcap.sh

put maintenance page on

add hosts entry to test new chat server in prodapp03 , prodapp04 

login to prodapp03 

configuration file = /deploy/crossbow/current/config/redis.yml

from 

production:
  host: chat.learnexa.com
  port: 6379

to 

production:
  host: 198.46.49.167
  port: 6379


configuration file = /deploy/crossbow/current/config/juggernaut.yml

from 

production:
  redis_host: chat.learnexa.com
  redis_port: 6379
  juggernaut_host: chat.learnexa.com
  juggernaut_port: 8090
  juggernaut_protocol: https


to 

production:
  redis_host: 198.46.49.167
  redis_port: 6379
  juggernaut_host: 198.46.49.167
  juggernaut_port: 8090
  juggernaut_protocol: https


save and exit

passenger and god service restart

login to prodapp04 

configuration file = /deploy/crossbow/current/config/redis.yml

from 

production:
  host: chat.learnexa.com
  port: 6379

to 

production:
  host: 198.46.49.167
  port: 6379


configuration file = /deploy/crossbow/current/config/juggernaut.yml

from 

production:
  redis_host: chat.learnexa.com
  redis_port: 6379
  juggernaut_host: chat.learnexa.com
  juggernaut_port: 8090
  juggernaut_protocol: https


to 

production:
  redis_host: 198.46.49.167
  redis_port: 6379
  juggernaut_host: 198.46.49.167
  juggernaut_port: 8090
  juggernaut_protocol: https


save and exit

passenger and god service restart

Step 2

Login to new haproxy server stop and start chat service 

login as expprodl in  10.166.152.18

cd /bin/



./chat_sss.sh status # check status 
expprodl  2570     1  0 Aug08 ?        00:01:05 node server.js
expprodl  2565     1  0 Aug08 ?        00:08:50 ./redis-server redis.conf




once new chat service validation completed


login to prodapp03 

configuration file = /deploy/crossbow/current/config/redis.yml

to 

production:
  host: chat.learnexa.com
  port: 6379

from 

production:
  host: 198.46.49.167
  port: 6379


configuration file = /deploy/crossbow/current/config/juggernaut.yml

to  

production:
  redis_host: chat.learnexa.com
  redis_port: 6379
  juggernaut_host: chat.learnexa.com
  juggernaut_port: 8090
  juggernaut_protocol: https


from 

production:
  redis_host: 198.46.49.167
  redis_port: 6379
  juggernaut_host: 198.46.49.167
  juggernaut_port: 8090
  juggernaut_protocol: https
  
save and exit

passenger and god service restart


login to prodapp04 

configuration file = /deploy/crossbow/current/config/redis.yml

to 

production:
  host: chat.learnexa.com
  port: 6379

from 

production:
  host: 198.46.49.167
  port: 6379


configuration file = /deploy/crossbow/current/config/juggernaut.yml

to  

production:
  redis_host: chat.learnexa.com
  redis_port: 6379
  juggernaut_host: chat.learnexa.com
  juggernaut_port: 8090
  juggernaut_protocol: https


from 

production:
  redis_host: 198.46.49.167
  redis_port: 6379
  juggernaut_host: 198.46.49.167
  juggernaut_port: 8090
  juggernaut_protocol: https

save and exit

passenger and god service restart



login as expprodl prodapp04

cd crossbow/

./runcap.sh

remove maintenance page

Only For Fresh Installation steps


cd /root 
yum install pcre-devel zlib-devel
wget http://www.haproxy.org/download/1.7/src/haproxy-1.7.2.tar.gz 
wget https://openssl.org/source/openssl-1.0.2d.tar.gz

tar -zxvf openssl-1.0.2d.tar.gz -C /usr/local/src
cd /usr/local/src/openssl-1.0.2d
./config
 make
 make install
 mv /usr/bin/openssl /root/
 ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl



Finally, check your OpenSSL version again,

openssl version


tar xvzf haproxy-1.5.15.tar.gz
make clean
make TARGET=custom CPU=native USE_PCRE=1 USE_LIBCRYPT=1 USE_LINUX_SPLICE=1 USE_LINUX_TPROXY=1 USE_OPENSSL=yes
make install PREFIX="/opt/haproxy"
haproxy -vv

For chat server installation

node validation without vpn connection for this new haproxy server only applicable

Public IP        Private IP                                                                          Haproxy Ip

Public IP removed for testing => 10.166.152.220	 prodapp03 node validation alone for new haproxy server centos 6.8 ( 10.166.152.18 )

Public IP removed for testing => 10.166.152.222	 prodapp04 node validation alone for new haproxy server centos 6.8 ( 10.166.152.18 )

add hosts entry required server ip

required vpn prodapp03 prodapp04 both nodes validation


10.166.152.226 prodapp03 prodapp04 both nodes validation  for new haproxy server centos 6.8 required vpn as of now don't have public ip


add hosts entry 

10.166.152.226 test.learnexa.com