shellscripting

/opt/automation/scripts/apache/

stopapache.sh
#!/bin/bash
#stopping apache
systemctl stop httpd
---------------------------------
startapache.sh
#!/bin/bash
#starting apache
systemctl start httpd
--------------------------------
restartapache.sh
#!/bin/bash
#stopping apache
systemctl stop httpd
wait 2
systemctl start httpd
========================
restartapache.sh

#!/bin/bash
#stopping apache
/opt/automation/scripts/apache/stopaapche.sh
wait 2
#starting 
/opt/automation/scripts/apache/startapache.sh


========================================================

 cat staticdeploy.sh
#!/bin/bash
#Author:Name
#Version:1.0
#Purpose: Deployment
cp /home/ec2-user/Coo* /tmp/websites/
sleep 2
cd /tmp/websites/
unzip *.zip
cd CookingSchool-FreeHtmlPageTemplate/
cp -r * /var/www/html/
======================================================================
trouble-shoot
issue with i am role

debug:-
let kwait=$SHUTDOWN_WAIT
    count=0;
    until [ `ps -p $pid | grep -c $pid` = '0' ] || [ $count -gt $kwait ]
    do
      echo -n -e "\n\e[00;31mwaiting for processes to exit\e[00m";
      sleep 1
      let count=$count+1;
    done
 

chown -R awsadmin.awsadmin /etc
/etc/*

[ec2-user@ip-172-31-35-192 ~]$ sudo su -
sudo: /etc/sudo.conf is owned by uid 1001, should be 0
sudo: /etc/sudo.conf is owned by uid 1001, should be 0
sudo: /etc/sudoers is owned by uid 1001, should be 0
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
[ec2-user@ip-172-31-35-192 ~]$

=================================
403----same page was comming

=========================================


pem file issues from windows

boot up script failed

make real time processing logs in splunk

cloudtrail--------------------------->ec2--------------->splunk s/w------->dns----------->url----------->SAAS


source="accesslog.txt" host="prd-p-ccxrrhswr5s3" sourcetype="test"

splunk:-

filezilla---->awsadmin---->

ssh
/var/log/httpd----->acess.log ---->/tmp/---777


accounts:-
github
splunk

#!/bin/bash
yum install bind-utils nc telent wget unzip -y 


aws-cli.sh
#!/bin/bash
curl "https://s3.amazonaws.com/aws-cli/awscli-bundle.zip" -o "awscli-bundle.zip"
unzip awscli-bundle.zip
sudo ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws

tomcat-setup


ec2
JAVA-- Installation ---->oracle ----cred->internet
apachetomcat--->Aapahe tomcat site-->internet
setenv.sh--->export JAVA_HOME
start--->
github-structure


#!/bin/bash
yum install bind-utils nc telent wget unzip -y 
mkdir /opt/softwares
tempfile=/opt/automation/scripts/tempfile
cd /opt/softwares
aws s3 cp s3://petclinic-uat-deployment-files/jdk-7u80-linux-x64.rpm .
rpm -ivh jdk-7u80-linux-x64.rpm
sleep 5
aws s3 cp s3://petclinic-uat-deployment-files/apache-tomcat-7.0.84.zip .
unzip apache-tomcat-7.0.84.zip -c /opt/
chmod -R 700 /opt/apache-tomcat-7*
rm -rf /opt/apache-tomcat-7*/webapps/*
cd /opt/apache-tomcat-7*/bin/
./startup.sh
cd /opt/softwares
wget http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/wls/10g/r3/cluster/session_state/files/shoppingcart.zip
unzip shoppingcart.zip
cp shoppingcart.war /opt/apache-tomcat-7*/webapps/
ps -ef | grep tomcat >>$tempfile
ls -ltr /opt/apache-tomcat-7*/webapps/ >>$tempfile


status(){
          pid=$(tomcat_pid)
          if [ -n "$pid" ]
            then echo -e "\e[00;32mTomcat is running with pid: $pid\e[00m"
          else
            echo -e "\e[00;31mTomcat is not running\e[00m"
            return 3
          fi
}



tomcat_pid() {
        echo `ps -fe | grep /opt/tomcat_latest | grep -v grep | tr -s " "|cut -d" " -f2`
}


















#!/bin/bash
tempfile=tomcat-setup
spath=/opt/softwares
e=echo
check directory exist or not------------>condition---if
if [ -d $spath ]; then
echo "$spath exists"
else
mkdir $spath
fi
#Downloading s3 content- jdk
$e "i am downloading softwares from s3 bucket"
if
aws s3 cp s3://petclinic-uat-deployment-files/jdk-7u80-linux-x64.rpm $spath
rpm -ivh jdk-7u80-linux-x64.rpm
sleep 5

$e "i am downloading softwares from s3 bucket"
aws s3 cp s3://petclinic-uat-deployment-files/apache-tomcat-7.0.84.zip $spath

unzip apache-tomcat-7.0.84.zip -c /opt/
chmod -R 700 /opt/apache-tomcat-7*
rm -rf /opt/apache-tomcat-7*/webapps/*
cd /opt/apache-tomcat-7*/bin/
./startup.sh
cd /opt/softwares
wget http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/wls/10g/r3/cluster/session_state/files/shoppingcart.zip
unzip shoppingcart.zip
cp shoppingcart.war /opt/apache-tomcat-7*/webapps/
ps -ef | grep tomcat >>$tempfile
ls -ltr /opt/apache-tomcat-7*/webapps/ >>$tempfile

echo $?

======================================================
#!/bin/sh
cp home/testing/present.txt home/testing/future.txt
   echo "Copy Code: $? - Successful"
if [ $? != 0 ]; then
   echo "Copy Code: $? - Unsuccessful"
   else
   echo "Copy Code: $? - successful"
fi
========================================================
if [ -d "$LINK_OR_DIR" ]; then 
  if [ -L "$LINK_OR_DIR" ]; then
    # It is a symlink!
    # Symbolic link specific commands go here.
    rm "$LINK_OR_DIR"
  else
    # It's a directory!
    # Directory command goes here.
    rmdir "$LINK_OR_DIR"
  fi
fi

===================================================
-e: any kind of archive 

-f: file 

-h: symbolic link 

-r: readable file 

-w: writable file 

-x: executable file 

-s: file size greater than zero 

====================================


#!/bin/sh
for i in tomcat1 tomcat2
do
 ssh awsadmin@$i 'sudo mkdir -p /opt/automation/scripts'
done



#!/bin/sh
for i in tomcat1 tomcat2
do
 ssh awsadmin@$i 
done

ssh cacher@cache-server "cd somewhere && untar archive && diff <(ls -lah directory) <(ls -lah other_directory)"

#!/bin/sh
for i in tomcat1 tomcat2
do
 scp /opt/apps/shoppingcart.war $i:/opt/tomcat_latest/webapps
done
================================================
vpc
d

sed
awk
cut
sort  -nr
diff
uniq

>/dev/null 2>&1

2 error
1=success
$0
$1


crontab
* * * * * 
[Minute(0-59)] [hour(0-23)] [Day_of_the_Month(1-31)] [Month_of_the_Year(1-12)] [Day_of_the_Week(0-6)] [command]

*/2 *  * * * /root/url_check.sh
root@ip-10-0-0-60 ~]# tail -f /var/log/cron

sort | uniq

first command ouput | input to second cmd 


#!/bin/sh
yum -y install httpd 
chkconfig httpd on--------------Enabling OS level service/daemon(systemd ,httpd,ntptd,sshd,)
systemctl start httpd

curl http://169.254.169.254/latest/meta-data/
  
 https://github.com/aws-cloudformation/tutorial
 
 
autoscaling and 


During ec2 provisoning i want to install some package.(user data)--

ssh --public--------- private instance--------yum ------------>internet

============================================================================
Configuration Management 

POC--->proof of concept

json/yaml
Rex
SALT
Ansible------------------>
Puppet
Chef
---------------->frameworks

key and value
lists
dictionary
tasks------->action ,description , name
===============================================================================