【精】集群环境自动配置

在学习的过程中，有时候就把环境搞坏了，反复反复反复，浪费了很多时间，所以就搞了一个自动化环境配置脚本，在这里记一下

把安装好的虚拟机备份一下，我就直接在原来的安装文件夹压缩了一份

DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=192.168.100.101
NETMASK=255.255.255.0
GATEWAY=192.168.100.2
DNS1=192.168.100.2
DNS2=8.8.8.8

CentOS关机，开始克隆集群：

yum install -y httpd

#!/bin/bash

SERVERS="192.168.100.101 192.168.100.102 192.168.100.103 192.168.100.104"
PASSWORD=centos610
BASE_SERVER=192.168.100.100

config_ssh_auto_login() {
  expect -c "set timeout -1;
      spawn ssh-copy-id $1;
      expect {
          *(yes/no)* {send -- yes
;exp_continue;}
          *password:* {send -- $2
;exp_continue;}
          eof        {exit 0;}
      }";
}

config_ssh_auto_login_batch() {
  echo ~~~~~~~~~~~~~~~~~~~~~~~~~~ Starting ssh-copy-id ~~~~~~~~~~~~~~~~~~~~~~~~~~
  for SERVER in $SERVERS
  do
      config_ssh_auto_login $SERVER $PASSWORD
  done
}

config_local_env() {
  yum install -y openssh-clients;
  yum install -y expect;
}

config_remote_openssh_clients() {
  for SERVER in $SERVERS
  do
      expect -c "set timeout -1;
          spawn ssh root@$SERVER yum install -y openssh-clients;
          expect {
              *password:* {send -- $PASSWORD
;exp_continue;}
              *(yes/no)* {send -- yes
;exp_continue;}
              eof        {exit 0;}
          }";
  done
}

make_rsa_key() {
  expect -c "set timeout -1;
      spawn ssh-keygen;
      expect {
          */.ssh/id_rsa* {send -- 
;exp_continue;}
          *empty* {send -- 
;exp_continue;}
          *again* {send -- 
;exp_continue;}
          eof        {exit 0;}
      }";
}

echo ~~~~~~~~~~~~~~~~~~~~~~~~~~ config local environment ~~~~~~~~~~~~~~~~~~~~~~~~~~
config_local_env

echo ~~~~~~~~~~~~~~~~~~~~~~~~~~ config remote openssh-clients ~~~~~~~~~~~~~~~~~~~~~~~~~~
config_remote_openssh_clients

echo ~~~~~~~~~~~~~~~~~~~~~~~~~~ make rsa key ~~~~~~~~~~~~~~~~~~~~~~~~~~
make_rsa_key

echo ****************************** config ssh auto login ~~~~~~~~~~~~~~~~~~~~~~~~~~
config_ssh_auto_login_batch

echo ~~~~~~~~~~~~~~~~~~~~~~~~~~ copy and execute install.sh ~~~~~~~~~~~~~~~~~~~~~~~~~~
for SERVER in $SERVERS
do
  ssh root@$SERVER mkdir /root/scripts
  scp install.sh root@$SERVER:/root/scripts
  ssh root@$SERVER /root/scripts/install.sh
done

#!/bin/bash

BASE_SERVER=192.168.100.100

yum install -y openssh-clients;
yum install -y expect;
yum install -y wget

# Download jdk-8u201-linux-x64.tar.gz
wget $BASE_SERVER/jdk-8u201-linux-x64.tar.gz
tar -zxvf jdk-8u201-linux-x64.tar.gz -C /usr/local/
cat >> /root/.bash_profile << EOF

export JAVA_HOME=/usr/local/jdk1.8.0_201
export PATH=$PATH:$JAVA_HOME/bin

EOF
source /root/.bash_profile

chmod u+x prepare.sh install.sh

./prepare