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14.auto scalling

14.auto scalling

 ......................

 ............... AUTO SCALING..........

 1. CREATING CUSTOM AMI..
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#!/bin/bash
yum update -y
yum install nginx -y
service nginx start
chkconfig nginx on 
...........................

 .yum install stress -y   .......stress clinte on amazone linux..
.chkconfig nginx on       ........ for nginx server runs dirctlly my AMI deployed to vm...
-crate image- Created AMI-use This AMI in Auto scaling Confi add..

 2.CRATE ELB.........
...................................
........................
.NLB-----Creat Target..(Lisners Automatically added by auto scallin)
.In this Domain add route 53 config..




3. CREATE AUTOSCALING..- .........................
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.Launch config -Add MY AMI, machine,key, Then ,

 .{In Auto scalling group-vpc-add subnets-Advanced -load balacing check tick mark-add ELB..-next config scaling-policey -- 
-Use scalling policies to adjst of this group-- scal b/t 1-3
 increse groupsize-alearm set-CPU Utilization > 50 --add 2-inst
 decreas groupsize-alearm set-CPU Utilization < 45 --rem 2-inst 
 next- key -valu(geting server name) - reviw-creat auto scaling group}
4.Create End user Traficc.. indirtlly using Stress tool  using....
............................................................
.service nginx status
.stress    .....  stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 10s
.cntrol+c...
.ps -ef

   .2757  0 19:32 pts/0    00:00:00 stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 20m
  .
.kill 2757

 end......
.delt- NLB-Auto scalling..servrs terminte.............AMI Remove and Image also de register,,,snap shot also delet.....
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