jenkins-init

#!/bin/bash
# jenkins service test.
# This script checks all required services, ports, and processes are up and running. Script can be used in monitoring jenkins application. 
# Run this script against jenkins hosts where jenkins is installed.
# Run this script after jenkins deployed. 
#BEGIN
#export SYSTEMCTL_SKIP_REDIRECT=1
# Calling functions from library

source /etc/init.d/functions
HOSTNAME=$(hostname -s)
DOMAIN=$(hostname -d)
rc=0
fc=1
execute_nicely() {
    local -r msg=$1
    local -r cmd=$2
    local -i rc=0

    echo -n "$msg"
    local output
    output=$($cmd 2>&1)
    rc=$?

    if [ $rc -ne 0 ]; then
        echo
        echo -n "$output"
        failure
        echo
    else
        success
        echo
    fi

    return $rc
}

start() {
   execute_nicely \
   "Starting jenkins" \
   "/etc/init.d/jenkins start" \
   || return $?

    return 0
}

stop() {
   execute_nicely \
   "Shtting down jenkins" \
   "/etc/init.d/jenkins stop" \
   || return $?

    return 0
}

status() {
   local -i rc=0
   execute_nicely \
   "Status of jenkins" \
   "/etc/init.d/jenkins status" 
    if [ $? -ne $rc ]; then
      rc=$?
    fi 

    return $rc
}

test() {
echo
if [[ "$HOSTNAME" = jenkins* ]]; then
  echo    "###############################################"
  echo    "#            RUNNING SMOKE TEST               #"
  echo    "###############################################"
else
  exit 1
fi
sleep 0.3
# Test suit on nginx.

echo "-----------------------------------------------"
echo "               Checking Nginx                  "
echo "-----------------------------------------------"
# Check: domain specific certs in /etc/nginx/ssl
for VALUE in key pem  
do
  if [ -s /etc/nginx/ssl/"$DOMAIN.$VALUE" ]; then
    echo -n "$DOMAIN.$VALUE is 0 size and valid"
    success
    logger -t jenkins-init "Cert:$DOMAIN.$VALUE  test=Present" 
    sleep 0.3
    echo
  else
    echo -n "$DOMAIN.$VALUE is invalid or absent"
    failure
    logger -t jenkins-init "Certs:$DOMAIN.$VALUE test=Absent"
    sleep 0.3
    echo
    rc=$fc
  fi
done
sleep 0.3

# Check: nginx service status
systemctl status nginx &> /dev/null
#rc=$?
if [ $? -eq 0 ]; then
  echo -n "Nginx Process is running"
  success
  logger -t jenkins-init "Process:nginx  test=Running"
  sleep 0.3
  echo
else
  echo -n "Nginx process is not running"
  failure
  logger -t jenkins-init "Process:nginx  test=Stopped"
  sleep 0.3
  echo
  rc=$fc
fi
sleep 0.3

# check: respective ports assigned to nginx. 

PORT_FFT=$(netstat -nlp | grep nginx | grep 443 | cut -d ":" -f2 | cut -d " " -f1)
PORT_EZ=$(netstat -nlp | grep nginx | grep 80 | grep -m1 "" | grep 80 | cut -d ":" -f2 | cut -d " " -f1)
NGINX_SVC=$(netstat -nlp | grep nginx | grep -m1 " " | cut -d "/" -f2 | cut -d ":" -f1)

if [ "$NGINX_SVC" = "nginx" ] && [ "$PORT_FFT" -eq 443 ]; then
  echo -n "Nginx is using port $PORT_FFT"
  success
  logger -t jenkins "nginx-port:443  test=Assigned"
  sleep 0.3
  echo
else
  echo -n "Nginx is not using port $PORT_FFT"
  failure
  logger -t jenkins "nginx-port:443  test=Unassigned"
  sleep 0.3
  echo
  rc=$fc
fi
sleep 0.3
if [ "$NGINX_SVC" = "nginx" ] && [ "$PORT_EZ" -eq 80 ]; then
  echo -n "Nginx is using port $PORT_EZ"
  success
  logger -t jenkins "nginx-port:80  test=Assigned"
  sleep 0.3
  echo
else
  echo -n "Nginx is not using port $PORT_EZ"
  failure
  logger -t jenkins "nginx-port:80  test=unassigned"
  sleep 0.3
  echo
  rc=$fc
fi
sleep 0.3
# Test Suit on jenkins.

echo "-----------------------------------------------"
echo "              Checking jenkins                "
echo "-----------------------------------------------"
# check: jenkins config file in location.

if [ -f /opt/jenkins/jenkins_home/config.xml ]; then
   echo -n "Jenkins config file is placed"
   success
   logger -t jenkins-init "file:Config   test=Present"
   sleep 0.3
   echo
else
   echo -n "Jenkins config file missing" 
   failure
   logger -t jenkins-init "file :Config  test=Absent"
   sleep 0.3
   echo
   rc=$fc
fi
sleep 0.3
# Check: jenkins's version

WAR_VERSION=$(grep "/version" /opt/jenkins/jenkins_home/config.xml | cut -d ">" -f2 | cut -d "<" -f1)
echo -n jenkins war version is $WAR_VERSION
success
echo
sleep 0.3 
# check: defult job available in jobs folder

if [ -d /opt/jenkins/jenkins_home/jobs/Deploy-Jobs ]; then
   echo -n "Default job is present"
   success
   logger -t jenkins-init "job:Deploy-Jobs  test=Present"
   sleep 0.3
   echo
else
  echo -n "Default job is missing"
  failure
  logger -t jenkins-init "job:Deploy-Jobs   test=Absent"
  sleep 0.3
  echo
  rc=$fc
fi
sleep 0.3
# check: directory structure is proper for jenkins
Jhome=(/opt/jenkins/jenkins_home)
Jinstall=(/opt/jenkins/jenkins_install)
Jwork=(/opt/jenkins_workdir)
for dir in $Jhome $Jinstall $Jwork
do
  if [ -d $dir ]; then
    echo -n "$dir is placed properly"
    success
    logger -t jenkins-init "type=$dir  test=Placed Correctly"
    sleep 0.3
    echo
  else
    echo -n "$dir is not placed properly"
    failure
    logger -t jenkins-init "type=$dir  test=Placed Wrongly"
    sleep 0.3
    echo
    rc=$fc
  fi
done
sleep 0.3
# Check: Old version where jenkins_workdir is inside jenkins dir.
if [ -d /opt/jenkins/jenkins_workdir ]; then
  echo -n "/opt/jenkins/jenkins_workdir:From old version"
  warning
  logger -t jenkins-init "type=/opt/jenkins/jenkins_workdir  test=Placed Wrongly"
  echo
fi
sleep 0.3
# Check: jenkins service status
systemctl status jenkins &>/dev/null
#rc=$?
if [ $? -eq 0 ]; then 
  echo -n "Service jenkins is active"
  success 
  logger -t jenkins-init "type=service-jenkins test:Running"
  echo
else
  echo -n "Service jenkins is stopped"
  failure
  logger -t jenkins-init "type=service-jenkins test:Stopped"
  echo
  rc=$fc
fi
sleep 0.3
# Test suit on ansible
echo "-----------------------------------------------"
echo "              Checking Ansible                 "
echo "-----------------------------------------------"
# check: ansible user is present
user=$(getent passwd ansible | cut -d ":" -f1)
if [ $user = ansible ]; then
  echo -n "Ansible user exists"
  success
  logger -t jenkins-init "user:Ansible   test=Present"
  sleep 0.3
  echo
else
  echo -n "Ansible user is missing"
  failure
  logger -t jenkins-init "user:Ansible   test=Absent"
  sleep 0.3
  echo
  rc=$fc
fi
sleep 0.3
# check: user id for ansible.
user_id=$(id ansible | cut -d "=" -f2 | cut -d "(" -f1)
if [ $user_id -eq 1098 ]; then
  echo -n "Ansible user id is 1098"
  success
  logger -t jenkins-init "user:Id  test=Correct"
  sleep 0.3
  echo
else
  echo -n "Ansible user id is not appropriate"
  failure
  logger -t jenkins-init "user:Id test=Incorrect"
  sleep 0.3
  echo
  rc=$fc
fi
sleep 0.3
# check: ansible is installed on hosts
ansible --version &> /dev/null
#rc=$?
if [ $? -eq 0 ]; then
  echo -n "Ansible is installed"
  success
  logger -t jenkins-init "package:Ansible  test=Installed"
  sleep 0.3
  echo
else
  echo -n "Ansible might not be installed"
  failure
  logger -t jenkins-init "package:Ansible  test=missing"
  sleep 0.3
  echo
  rc=$fc
fi
sleep 0.3
# Test suit on connection
echo "-----------------------------------------------"
echo "            Checking Connections               "
echo "-----------------------------------------------" 
# Check: connection to host
curl http://host &> /dev/null
#rc=$?
if [ $? -eq 0 ]; then
  echo -n "host is reachable from jenkins"
  success
  logger -t jenkins-init "connection to: host  test=connected"
  sleep 0.3
  echo 
else 
  echo -n "host is not reachable from jenkins"
  failure
  logger -t jenkins-init "connection to: host  test=dropped"
  sleep 0.3
  echo
  rc=$fc
fi
# check: connection to swarmmaster01/02/03 and swamworker01/02/03
for host in swarmmaster01 swarmmaster02 swarmmaster03 swarmworker01 swarmworker02 swarmworker03 
do 
  curl http://$host:8080 &> /dev/null
#  rc=$?
  if [ $? -eq 0 ]; then
    echo -n "$host is reachable from jenkins"
    success
    logger -t jenkins-init "connection to: $host  test=connected"
    sleep 0.3
    echo
  else
    echo -n "$host is not reachable from jenkins"
    failure
    logger -t jenkins-init "connection to: $host  test=dropped"
    sleep 0.3
    echo
    rc=$fc
  fi
  
done


return $rc
}

case "$1" in
  start)
    start
    exit $?
    ;;
  stop)
    stop
    exit $?
    ;;
  restart)
    stop
    sleep 2
    start
    exit $?
    ;;
  status)
    status
    exit $?
    ;;
  test)
    test
    exit $?
    ;;
  *)
    echo "Usage: $0 {start|stop|restart|status|test}"
    exit $?
esac
return $rc
# End