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CentOS7 reset script to initialize a new virtual machine

Shulou Source: shulou.com Published: 2022-06-03 04:32:57 10月03日 Update

It can be used and needs to be improved.

CentOS7 test

Ha ha

Reset2.0.sh (20190906)

#! / bin/bash

# * *

# Author: 28

# QQ: × × ×

# Date: 2019-08-01

# FileName: reset.sh

# URL: https://blog.51cto.com/14012942

# Description: The test script

# *

# set-e

RED= "\ 033 [0ter31m"

GREEN= "\ 033 [0x 32m"

NO_COLOR= "\ 033 [0m"

Modify alias

Modify_alias () {

Cat > > ~ / .bashrc > / etc/profile.d/env.sh

}

Install basic softwar

Install_software () {

Yum install gcc gcc-c++ glibc glibc-devel pcre pcre-devel openssl openssl-devel systemd-devel zlib-devel vim lrzsz tree screen lsof tcpdump wget ntpdate net-tools iotop bc zip unzip nfs-utils-y

}

Replace the yum source

Replace_yum () {

# wget-O / etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

Curl-o / etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

Sed-I-e'/ mirrors.cloud.aliyuncs.com/d'-e'/ mirrors.aliyuncs.com/d' / etc/yum.repos.d/CentOS-Base.repo

# wget-O / etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

Curl-o / etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

Yum makecache

}

Vimvimrc, copy it over.

Modify_vimrc () {

Cat > ~ / .vimrc > / var/spool/cron/root

}

# ssh tuning

Ssh_adjust () {

Cp / etc/ssh/sshd_config {, _ bak}

Sed'/ ^ GSSAPIAuthentication/d' / etc/ssh/sshd_config-I

Sed'/ ^ UseDNS/d' / etc/ssh/sshd_config-I

Echo "GSSAPIAuthentication no" > > / etc/ssh/sshd_config

Echo "UseDNS no" > > / etc/ssh/sshd_config

Systemctl restart sshd

}

# maximum number of file openings

Limits_tune () {

Echo'

Soft nofile 128000hard nofile 256000

Root soft nofile 128000

Root hard nofile 256000

'> > / etc/security/limits.conf

}

Main () {

Judge_root

Check_release

Replace_yum

Install_software

Iptables_selinux_stop

Modify_alias

Modify_vimrc

Timezone_adjust

Time_sync

Limits_tune

Ssh_adjust

Modify_PS1

Modify_eth_card

Bash_completion

}

Main

Reset1.0.sh (20190808)