1、网卡名称更改为eth*
centos：
1 [root@CentOS7 ~]# cat /etc/default/grub
2 GRUB_TIMEOUT=5
3 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
4 GRUB_DEFAULT=saved
5 GRUB_DISABLE_SUBMENU=true
6 GRUB_TERMINAL_OUTPUT="console"
7 GRUB_CMDLINE_LINUX="crashkernel=auto spectre_v2=retpoline rhgb quiet net.ifnames=0 biosdevname=0" #增加net.ifnames=0 biosdevname=0
8 GRUB_DISABLE_RECOVERY="true"
9 [root@CentOS7 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens33 #更改网卡配置文件
10 TYPE="Ethernet"
11 PROXY_METHOD="none"
12 BOOTPROTO="static"
13 DEFROUTE="yes"
14 NAME="eth0" #更改NAME名称为eth0
15 DEVICE="eth0" #更改DEVICE名称为eth0
16 ONBOOT="yes"
17 IPADDR=10.0.0.7
18 NETMASK=255.255.255.0
19 GATEWAY=10.0.0.2
20 DNS1=10.0.0.2
21 [root@CentOS7 ~]# mv /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-eth0 #修改网卡配置文件名称为eth0
22 [root@CentOS7 ~]# grub2-mkconfig -o /boot/grub2/grub.cfg #重新生成gurb配置并更新内核
23 Generating grub configuration file ...
24 Found linux image: /boot/vmlinuz-3.10.0-1160.el7.x86_64
25 Found initrd image: /boot/initramfs-3.10.0-1160.el7.x86_64.img
26 Found linux image: /boot/vmlinuz-0-rescue-67a276dba63741a08afb2f95b256dbcc
27 Found initrd image: /boot/initramfs-0-rescue-67a276dba63741a08afb2f95b256dbcc.img
28 done
29 [root@CentOS7 ~]# reboot #重启系统
30 [root@CentOS7 ~]# ip a #验证网卡名称
31 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
32 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
33 inet 127.0.0.1/8 scope host lo
34 valid_lft forever preferred_lft forever
35 inet6 ::1/128 scope host
36 valid_lft forever preferred_lft forever
37 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
38 link/ether 00:0c:29:dc:98:a8 brd ff:ff:ff:ff:ff:ff
39 inet 10.0.0.7/24 brd 10.0.0.255 scope global noprefixroute eth0
40 valid_lft forever preferred_lft forever
41 inet6 fe80::20c:29ff:fedc:98a8/64 scope link
42 valid_lft forever preferred_lft forever
Ubuntu：
wang@Ubuntu1804:~$ sudo vim /etc/default/grub
[sudo] password for wang:
wang@Ubuntu1804:~$ cat /etc/default/grub
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=2
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0" #增加net.ifnames=0 biosdevname=0
wang@Ubuntu1804:~$ sudo update-grub #重新生成grub配置并更新内核
Sourcing file `/etc/default/grub'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-112-generic
Found initrd image: /boot/initrd.img-4.15.0-112-generic
done
wang@Ubuntu1804:~$ sudo reboot #重启系统
wang@Ubuntu1804:~$ ifconfig #验证网卡名称
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.9 netmask 255.255.255.0 broadcast 10.0.0.255
inet6 fe80::20c:29ff:fecf:1d8e prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:cf:1d:8e txqueuelen 1000 (Ethernet)
RX packets 227 bytes 47655 (47.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 193 bytes 21708 (21.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 26 bytes 2530 (2.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 26 bytes 2530 (2.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
2、修改yum源
- 阿里镜像站点：https://developer.aliyun.com/mirror/
- 清华大学镜像站点：https://mirrors.tuna.tsinghua.edu.cn/
- 网易云镜像站点：http://mirrors.163.com/
centos配置阿里yum源：
centos7:
[root@CentOS7 ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup #备份
[root@CentOS7 ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo #下载新的 CentOS-Base.repo 到 /etc/yum.repos.d/
[root@CentOS7 ~]# yum makecache #运行yum makecache生成缓存
centos8：
[root@CentOS8 ~]# mv /etc/yum.repos.d/CentOS-Linux-BaseOS.repo /etc/yum.repos.d/CentOS-Linux-BaseOS.repo.backup
[root@CentOS8 ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo
[root@CentOS8 ~]# yum makecache
Ubuntu1804配置清华大学镜像源：
1 wang@Ubuntu1804:/etc/apt$ sudo mv /etc/apt/sources.list /etc/apt/sources.list.backup
2 wang@Ubuntu1804:/etc/apt$ sudo vim /etc/apt/sources.list
3 wang@Ubuntu1804:/etc/apt$ cat /etc/apt/sources.list
4 # 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
5 deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
6 # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
7 deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
8 # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
9 deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
10 # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
11 deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
12 # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
13
14 # 预发布软件源，不建议启用
15 # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
16 # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
17 wang@Ubuntu1804:/etc/apt$ sudo apt update
3、安装常用软件包：
centos：
# yum -y install gcc make gcc-c++ glibc glibc-devel pcre pcre-devel openssl openssl-devel systemd-devel zlib-devel vim lrzsz tree tmux lsof tcpdump wget net-tools iotop bc bzip2 zip unzip nfs-utils man-pages redhat-lsb-core postfix mailx bash-completion man-pages
Ubuntu：
$ sudo apt -y purge ufw lxd lxd-client lxcfs lxc-common
$ sudo apt -y install iproute2 ntpdate tcpdump telnet traceroute nfs-kernel-server nfs-common lrzsz tree openssl libssl-dev libpcre3 libpcre3-dev zlib1g-dev ntpdate tcpdump telnet traceroute gcc openssh-server lrzsz tree openssl libssl-dev libpcre3 libpcre3-dev zlib1g-dev ntpdate tcpdump telnet traceroute iotop unzip zip
4、配置ssh服务：
CentOS7：
# sed -i.bak -e 's/#UseDNS yes/UseDNS no/' -e 's/GSSAPIAuthentication yes/GSSAPIAuthentication no/' /etc/ssh/sshd_config
# systemctl restart sshd
CentOS8：
# sed -i.bak -e 's/#UseDNS no/UseDNS no/' -e 's/GSSAPIAuthentication yes/GSSAPIAuthentication no/' /etc/ssh/sshd_config
# systemctl restart sshd
Ubuntu：
$ vim /etc/ssh/sshd_config
#PermitRootLogin prohibit-password
PermitRootLogin yes #允许root用户登录
#UseDNS no
UseDNS no #关闭DNS解析
$ sudo vim /etc/ssh/sshd_config
$ sudo su - root
# passwd
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
# systemctl restart sshd
5、centos禁用selinux及关闭防火墙
# sed -ri.bak 's/^(SELINUX=).*/\1disabled/' /etc/selinux/config
# systemctl disable --now firewalld
6、设置.vimrc
#!/bin/bash
#
UserName=your name
QQ=your QQ
UserURL=your URL
set_vimrc(){
cat >.vimrc <<EOF
set ts=4
set expandtab
set ignorecase
autocmd BufNewFile *.sh exec ":call SetTitile()"
func SetTitile()
if expand("%:e") == 'sh'
call setline(1,"#!/bin/bash")
call setline(2,"#")
call setline(3,"#*************************************************************************************")
call setline(4,"#Author: $UserName")
call setline(5,"#QQ: $QQ")
call setline(6,"#Date: ".strftime("%Y-%m-%d"))
call setline(7,"#FileName ".expand("%"))
call setline(8,"#URL: $UserURL")
call setline(9,"#Description: The test script")
call setline(10,"#Copyreght (C): ".strftime("%Y")." All rightsreserved")
call setline(11,"#*************************************************************************************")
call setline(12,"")
endif
endfunc
autocmd BufNewFile * normal G
EOF
echo -e "\e[1;31m vimrc设置完成 \e[0m"
}
set_vimrc