Batch distribution and execution of script keys

Keywords: Linux ansible yum ssh EPEL

Batch distribution and execution of script keys

Label (Space Separation): Linux Service Architecture - Chen Siqi

This teaching note is a summary of my study and work career, which is the first draft (there are many imperfections), the original work, allowed to be reproduced, when reproduced, please be sure to indicate the original source of the article, author information and this statement in the form of hyperlinks. Otherwise, legal liability will be pursued. http://www.cnblogs.com/chensiqiqi/

[TOC]

[Business case]

The company has eight new servers and plans to form a small-scale cluster architecture. One server is used as a batch management server, and the other seven servers are needed for business architecture. Now it's up to you to take charge of the early configuration of the server.

Requirements are as follows:

  • [x] Password-free key authentication is required when ssh from the management server connects to any other server, requiring batch distribution. (scripts for bulk distribution)
  • [x] Because there is no DNS parsing server, each server needs to parse the server address of hosts. Therefore, batch distribution of / etc/hosts files is needed (ansible realizes batch distribution of files)
  • [x] Simple optimization (server optimization script) and yum repository (epel.repo source) are needed in the initial stage of the new server. (ansible implements batch distribution and execution of scripts)

Environmental preparation

operating system

[root@m01 ~]# cat /etc/redhat-release 
CentOS release 6.8 (Final)

Kernel version

[root@m01 ~]# uname -r
2.6.32-642.el6.x86_64

Host network parameter settings:

host name NIC eth0 NIC eth1 purpose
lb01 10.0.0.5/24 172.16.1.5/24 A1-nginx Load Balancing Server 01
lb02 10.0.0.6/24 172.16.1.6/24 A2-nginx Load Balancing Server 02
web02 10.0.0.7/24 172.16.1.7/24 B1-apache web server
web01 10.0.0.8/24 172.16.1.8/24 B2-nginx web server
db01 10.0.0.51/24 172.16.1.51/24 C3-mysql database server
nfs01 10.0.0.31/24 172.16.1.31/24 C1-NFS Storage Server
backup 10.0.0.41/24 172.16.1.41/24 C2-rsync Storage Server
m01 10.0.0.61/24 172.16.1.61/24 X-Management Server

First, start deploying batch distribution of ssh keys

Step 1: Start installing sshpass interactive-free tools and mass distribution of SSH-key

Download epel source and update yum repository

[root@m01 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
[root@m01 ~]# yum -y clean all
[root@m01 ~]# yum makecache

Install the sshpass tool

[root@m01 ~]# yum -y install sshpass

Step 2: Create a key-pair file

Create key pairs without interaction

[root@m01 ~]# ssh-keygen -t dsa -f ~/.ssh/id_dsa -P ""
Generating public/private dsa key pair.
Your identification has been saved in /root/.ssh/id_dsa.
Your public key has been saved in /root/.ssh/id_dsa.pub.
The key fingerprint is:
4d:01:91:98:be:02:89:ab:ce:63:4f:81:e3:ab:0b:f8 root@m01
The key's randomart image is:
+--[ DSA 1024]----+
|       oo+.      |
|      o .  .     |
| . . .    .      |
|. +   .  o       |
| + o   .S .      |
|+ . o .          |
|+. . .           |
|++o              |
|*=E.             |
+-----------------+
[root@m01 ~]# ls ~/.ssh/
authorized_keys  id_dsa  id_dsa.pub  known_hosts

//Instructions:
ssh-keygen:Generate key pair commands
-t: Cryptographic Encryption Type of Specified Key Pairs( rsaļ¼Œdsa Two kinds)
-f: Specified key pair file generation path contains file name
-P(Uppercase: The password for the specified key pair

Step 3: Distribution of public keys in a hands-off manner

[root@m01~] # sshpass-p "ssh login password" ssh-copy-id-i ~/.ssh/id_dsa.pub "-o Strict Host Key Checking = no root@172.16.1.31"
Now try logging into the machine, with "ssh '-o StrictHostKeyChecking=no root@172.16.1.31'", and check in:

  .ssh/authorized_keys

to make sure we haven't added extra keys that you weren't expecting.

[root@m01 ~]# 

Instructions:
sshpass: Delivery-free tool for ssh connection services
 - p: Specify the password for login
 ssh-copy-id: a tool for automatically distributing public keys
 - i: Specify a public key path
 - o StrictHostKeyChecking=no: Do not write to each other's host information (the first ssh connection will be recorded in the know_hosts file)

Step 4: Testing ssh key authentication

[root@m01 ~]# ssh root@172.16.1.31   #Successful test, password-free ssh connection
Last login: Tue Mar 14 21:49:58 2017 from 172.16.1.1
[root@nfs01 ~]#

Step 5: Write batch distribution script for ssh key pair

#!/bin/bash
# author:Mr.chen
# 2017-3-14
# description:SSH Key Batch Distribution

User=root
passWord=##LinuxLogin password

function YumBuild(){

echo "Installing epel source yum Warehouse, please wait a moment...."
cd /etc/yum.repos.d/ &&\
[ -d bak ] || mkdir bak
[ `find ./*.* -type f | wc -l` -gt 0 ] && find ./*.* -type f |  xargs -i mv {} bak/
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo &>/dev/null
yum -y clean all &>/dev/null
yum makecache &>/dev/null

}

echo "Network connection testing under way,Please wait a moment...."
ping www.baidu.com -c2 >/dev/null ||(echo "Can't be connected with the Outer Network, the script environment must be connected with the Outer Network!" && exit)
[ $# -eq 0 ] && echo "No parameters! The format is: sh $0 Parameter 1...n" && exit 
rpm -q sshpass &>/dev/null || yum -y install sshpass &>/dev/null
if [ $? -gt 0 ];then
    YumBuild
    yum -y install sshpass &>/dev/null || (echo "sshpass build error!" && exit)
fi
[ -d ~/.ssh ] || mkdir ~/.ssh;chmod 700 ~/.ssh
echo "Creating key pairs...."
rm -rf ~/.ssh/id_dsa ~/.ssh/id_dsa.pub
ssh-keygen -t dsa -f ~/.ssh/id_dsa -P "" &>/dev/null
for ip in $*
do
    ping $ip -c1 &>/dev/null 
    if [ $? -gt 0 ];then
        echo "$ipUnable ping Please check the network" 
        continue
    fi
    sshpass -p "$passWord" ssh-copy-id -i ~/.ssh/id_dsa.pub "-o StrictHostKeyChecking=no ${User}@$ip" &>/dev/null
    echo "$ip Key Distribution Successful"
done

Special tips:
The content of the script is only for exploring ideas!
If you want to learn shell or programming well, it's no use just looking at it.
1. Learning (Basic)
2. Look (train of thought)
3. Imitation (Writing)
4. Exercise (after class)

Bear in mind...

Step 6: script distribution testing

[root@m01 yum.repos.d]# sh /server/scripts/ssh_key.sh 172.16.1.5 172.16.1.6 172.16.1.7 172.16.1.8 172.16.1.51 172.16.1.31 172.16.1.41 172.16.1.61
 Network connection testing is under way. Please wait a moment.
Creating a key pair...
172.16.1.5 Can't ping please check the network
 172.16.1.6 Can't ping please check the network
 172.16.1.7 Key Distribution Successful
 172.16.1.8 Key Distribution Successful
 172.16.1.51 Can not ping please check the network
 172.16.1.31 Key Distribution Successful
 172.16.1.41 Key Distribution Successful
 172.16.1.61 Key Distribution Successful

Remarks:
Deliberately less than 3 sets, the script test succeeded.

2. Start deploying ansible automation tools and distributing files in batches

Step 1: Install the ansible tool

Need epel.repo source
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo

yum -y install ansible

Step 2: Configure the host group

Configure / etc/ansible/hosts file

[root@m01 ~]# tail -8 /etc/ansible/hosts
[chensiqi]
172.16.1.31 
172.16.1.41 
172.16.1.51 
172.16.1.5
172.16.1.6
172.16.1.7 
172.16.1.8

Since password-free key authentication has been configured, the host mapping file of / etc/ansible/hosts can be added to the IP address of the managed host.

Step 3: Anible batch management test

[root@m01 ~]# ansible chensiqi -m command -a "w"
172.16.1.6 | SUCCESS | rc=0 >>
 08:47:40 up 12 min,  1 user,  load average: 0.00, 0.01, 0.01
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    m01              08:47    0.00s  0.27s  0.01s /bin/sh -c /usr

172.16.1.41 | SUCCESS | rc=0 >>
 22:48:28 up 1 day,  3:37,  2 users,  load average: 0.00, 0.01, 0.05
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     tty1     -                Sat03    1:15m  0.15s  0.15s -bash
root     pts/0    m01              22:48    1.00s  0.33s  0.00s /bin/sh -c /usr

172.16.1.51 | SUCCESS | rc=0 >>
 08:47:41 up 13 min,  1 user,  load average: 0.08, 0.03, 0.05
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    m01              08:47    1.00s  0.29s  0.00s /bin/sh -c /usr

172.16.1.31 | SUCCESS | rc=0 >>
 10:27:47 up 15:47,  2 users,  load average: 0.16, 0.05, 0.06
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     tty1     -                Mon20   20:56m  0.15s  0.15s -bash
root     pts/0    m01              10:27    0.00s  0.26s  0.00s /bin/sh -c /usr

172.16.1.5 | SUCCESS | rc=0 >>
 08:47:41 up 12 min,  1 user,  load average: 0.00, 0.01, 0.03
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    m01              08:47    0.00s  0.20s  0.00s /bin/sh -c /usr

172.16.1.7 | SUCCESS | rc=0 >>
 21:03:00 up 10:03,  2 users,  load average: 0.05, 0.05, 0.05
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     tty1     -                11:00    2:03m  0.14s  0.14s -bash
root     pts/0    m01              21:02    1.00s  0.18s  0.00s /bin/sh -c /usr

172.16.1.8 | SUCCESS | rc=0 >>
 10:27:48 up 14:31,  2 users,  load average: 0.00, 0.01, 0.05
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
root     tty1     -                Sat09   20:03m  0.10s  0.10s -bash
root     pts/0    m01              10:27    1.00s  0.16s  0.00s /bin/sh -c /usr

Step 4: Batch distribution of / etc/hosts files

[root@m01 ~]# ansible chensiqi -m copy -a "src=/etc/hosts dest=/etc/hosts backup=yes"   #backup=yes If the target file exists, do you backup the target file before overwriting
172.16.1.51 | SUCCESS => {
    "changed": true, 
    "checksum": "dba0126bf49ea8d4cdc476828f9edb37085c6afe", 
    "dest": "/etc/hosts", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "09bad48d0c62411850fd04b68f836335", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:net_conf_t:s0", 
    "size": 294, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489446564.45-249855699288208/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.31 | SUCCESS => {
    "changed": true, 
    "checksum": "dba0126bf49ea8d4cdc476828f9edb37085c6afe", 
    "dest": "/etc/hosts", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "09bad48d0c62411850fd04b68f836335", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:net_conf_t:s0", 
    "size": 294, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489446564.26-6373581674916/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.41 | SUCCESS => {
    "changed": true, 
    "checksum": "dba0126bf49ea8d4cdc476828f9edb37085c6afe", 
    "dest": "/etc/hosts", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "09bad48d0c62411850fd04b68f836335", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:net_conf_t:s0", 
    "size": 294, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489446564.37-90309519963188/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.5 | SUCCESS => {
    "changed": true, 
    "checksum": "dba0126bf49ea8d4cdc476828f9edb37085c6afe", 
    "dest": "/etc/hosts", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "09bad48d0c62411850fd04b68f836335", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:net_conf_t:s0", 
    "size": 294, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489446564.91-218095487370821/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.6 | SUCCESS => {
    "changed": true, 
    "checksum": "dba0126bf49ea8d4cdc476828f9edb37085c6afe", 
    "dest": "/etc/hosts", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "09bad48d0c62411850fd04b68f836335", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:net_conf_t:s0", 
    "size": 294, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489446564.92-48667872204035/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.8 | SUCCESS => {
    "changed": true, 
    "checksum": "dba0126bf49ea8d4cdc476828f9edb37085c6afe", 
    "dest": "/etc/hosts", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "09bad48d0c62411850fd04b68f836335", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:net_conf_t:s0", 
    "size": 294, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489446566.37-188264096277764/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.7 | SUCCESS => {
    "changed": true, 
    "checksum": "dba0126bf49ea8d4cdc476828f9edb37085c6afe", 
    "dest": "/etc/hosts", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "09bad48d0c62411850fd04b68f836335", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:net_conf_t:s0", 
    "size": 294, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489446566.39-64165112131501/source", 
    "state": "file", 
    "uid": 0
}

Special tips:
If there is a file in the target path and the target file is exactly the same as the file you want to copy, it will also cause the copy function of ansilbe to fail.

3. Write server initial optimization scripts (service optimization + automatic installation of epel source yum repository), and use ansible to distribute and execute scripts in batches

Step 1: Write server initial service optimization + epel source yum warehouse build script

#!/bin/bash
# author: Mr.chen
# 2017-3-15
# description: Server initial optimization script + epel source yum warehouse building


function ServerSystemOptimize(){

echo "The script starts trying to optimize the server as necessary....." && sleep 2
/etc/init.d/iptables stop &>/dev/null && echo "The firewall is closed!" && sleep 1
setenforce 0 &>/dev/null && echo "SElinux Closed!" || echo "SElinux Not opened!"
chkconfig iptables off && echo "Firewall has cancelled boot-up!"&& sleep 1
sed -i '7 s/enforcing/disabled/g' /etc/selinux/config && echo "SElinux The boot has been cancelled!"&& sleep 1
A=`awk '/id:/ {print NR,$0}' /etc/inittab | awk '{print $1}'`
sed -i "$A s/5/3/g" /etc/inittab && echo "Linux The start-up level has been set to 3 permanently!" && sleep 1
chkconfig --list | egrep -v "rsyslog|network|crond|sysstat|sshd" | awk '{print "chkconfig",$1,"off"}' | bash &>/dev/null && echo "The script is closed Linux Start-up of unnecessary services!" && sleep 1   

}

function YumBuild(){

echo "Installing epel source yum Warehouse, please wait a moment...."
cd /etc/yum.repos.d/ &&\
[ -d bak ] || mkdir bak
[ `find ./*.* -type f | wc -l` -gt 0 ] && find ./*.* -type f |  xargs -i mv {} /etc/yum.repos.d/bak/
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo &>/dev/null
yum -y clean all &>/dev/null
yum makecache &>/dev/null

}


echo "The script is running a network connection test,Please wait a moment...."
ping www.baidu.com -c2 &>/dev/null ||(echo "Can't connect with the extranet, or DNS Parsing is problematic, the script environment must be connected to the external network!" && exit)
YumBuild
ServerSystemOptimize

Step 2: Local test script functionality

[root@m01 ~]# sh /server/scripts/server_uptimize.sh 
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

Step 3: Batch distribution of scripts with ansible

[root@m01 ~]# ansible chensiqi -m copy -a "src=/server/scripts/server_uptimize.sh dest=/server/scripts/  backup=yes"
172.16.1.6 | SUCCESS => {
    "changed": true, 
    "checksum": "9d508da8cce8830722ac38ad274361601d33f43e", 
    "dest": "/server/scripts/server_uptimize.sh", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "efeaffe8266992c190c1055241458259", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:default_t:s0", 
    "size": 1600, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489449184.22-105813674245985/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.5 | SUCCESS => {
    "changed": true, 
    "checksum": "9d508da8cce8830722ac38ad274361601d33f43e", 
    "dest": "/server/scripts/server_uptimize.sh", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "efeaffe8266992c190c1055241458259", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:default_t:s0", 
    "size": 1600, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489449184.22-102726815232979/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.51 | SUCCESS => {
    "changed": true, 
    "checksum": "9d508da8cce8830722ac38ad274361601d33f43e", 
    "dest": "/server/scripts/server_uptimize.sh", 
    "gid": 0, 
    "group": "root", 
    "md5sum": "efeaffe8266992c190c1055241458259", 
    "mode": "0644", 
    "owner": "root", 
    "secontext": "system_u:object_r:default_t:s0", 
    "size": 1600, 
    "src": "/root/.ansible/tmp/ansible-tmp-1489449184.26-180721242166387/source", 
    "state": "file", 
    "uid": 0
}
172.16.1.41 | SUCCESS => {
    "changed": false, 
    "checksum": "9d508da8cce8830722ac38ad274361601d33f43e", 
    "dest": "/server/scripts/server_uptimize.sh", 
    "gid": 0, 
    "group": "root", 
    "mode": "0644", 
    "owner": "root", 
    "path": "/server/scripts/server_uptimize.sh", 
    "secontext": "system_u:object_r:default_t:s0", 
    "size": 1600, 
    "state": "file", 
    "uid": 0
}
172.16.1.31 | SUCCESS => {
    "changed": false, 
    "checksum": "9d508da8cce8830722ac38ad274361601d33f43e", 
    "dest": "/server/scripts/server_uptimize.sh", 
    "gid": 0, 
    "group": "root", 
    "mode": "0644", 
    "owner": "root", 
    "path": "/server/scripts/server_uptimize.sh", 
    "secontext": "system_u:object_r:default_t:s0", 
    "size": 1600, 
    "state": "file", 
    "uid": 0
}
172.16.1.8 | SUCCESS => {
    "changed": false, 
    "checksum": "9d508da8cce8830722ac38ad274361601d33f43e", 
    "dest": "/server/scripts/server_uptimize.sh", 
    "gid": 0, 
    "group": "root", 
    "mode": "0644", 
    "owner": "root", 
    "path": "/server/scripts/server_uptimize.sh", 
    "secontext": "system_u:object_r:default_t:s0", 
    "size": 1600, 
    "state": "file", 
    "uid": 0
}
172.16.1.7 | SUCCESS => {
    "changed": false, 
    "checksum": "9d508da8cce8830722ac38ad274361601d33f43e", 
    "dest": "/server/scripts/server_uptimize.sh", 
    "gid": 0, 
    "group": "root", 
    "mode": "0644", 
    "owner": "root", 
    "path": "/server/scripts/server_uptimize.sh", 
    "secontext": "system_u:object_r:default_t:s0", 
    "size": 1600, 
    "state": "file", 
    "uid": 0
}

Step 4: Using ansible to execute scripts in batches

[root@m01 ~]# ansible chensiqi -m shell -a "sh /server/scripts/server_uptimize.sh"
172.16.1.5 | SUCCESS | rc=0 >>
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

172.16.1.6 | SUCCESS | rc=0 >>
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

172.16.1.31 | SUCCESS | rc=0 >>
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

172.16.1.41 | SUCCESS | rc=0 >>
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

172.16.1.51 | SUCCESS | rc=0 >>
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

172.16.1.8 | SUCCESS | rc=0 >>
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

172.16.1.7 | SUCCESS | rc=0 >>
The script is testing the network connection, please wait a moment.
The epel source yum warehouse is being installed. Please wait a moment.
The *********************** script began to try to optimize the server as necessary... ************************************************************
The firewall is closed!
SElinux is off!
Firewall has cancelled boot-up!
SElinux has cancelled boot-up!
Linux Startup Run Level has been permanently set to 3!
The script has turned off the boot-up of unnecessary Linux services!

Posted by ev66 on Fri, 19 Apr 2019 23:39:34 -0700

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