(centos7系统的初始环境配置)
一、配置yum仓库
1.配置阿里的仓库源
[root@192 ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
2.检测yum仓库
[root@192 yum.repos.d]# yum repolist all |grep enable
base/7/x86_64 CentOS-7 - Base - mirrors.aliyun.com enabled: 10,072
extras/7/x86_64 CentOS-7 - Extras - mirrors.aliyun.c enabled: 512
updates/7/x86_64 CentOS-7 - Updates - mirrors.aliyun. enabled: 3,875
二、配置tab键补齐
1.安装bash-completion.noarch
yum -y install bash-completion.noarch
2.测试tab键补齐
需重启生效
[root@192 ~]# yum list a
all available
[root@192 ~]# yum list a
三、配置网络
[root@192 ~]# nmcli connection modify ens33 ipv4.addresses 192.168.3.201/24 ipv4.gateway 192.168.3.254 ipv4.dns 192.168.3.254 ipv4.method manual
[root@192 ~]# nmcli con reload
[root@192 ~]# nmcli con up ens33
四、修改计算机名
[root@192 ~]# hostnamectl set-hostname node01
五、安装常用工具
1.安装wget
yum -y install wget
2.安装netstat命令工具
yum -y install net-tools-2.0-0.25.20131004git.el7.x86_64
3.安装git工具
yum -y install git
4.安装vim
[root@192 ~]# yum install -y vim
六 、配置git命令补全
1.下载git相关文件
[root@192 ~]# git clone https://github.com/markgandolfo/git-bash-completion.git
2.复制文件
mv git-completion.sh/git-completion.bash ~/.git-completion.bash
3.修改~/.bashrc文件
[root@192 ~]# cat ~/.bashrc
# .bashrc
# User specific aliases and functions
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
if [ -f ~/.git-completion.bash ]; then
. ~/.git-completion.bash
fi
4.使环境变量生效
[root@192 ~]# source ~/.bashrc
5.测试git
[root@192 ~]# git co
column commit config count-objects
[root@192 ~]# git co
七、配置防火墙与selinux
1.关闭selinux
①查看当前的selinux
[root@192 ~]# getenforce
Enforcing
②永久关闭selinux
[root@192 ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
③临时关闭
[root@192 ~]# setenforce 0
[root@192 ~]# getenforce
Permissive
2.防火墙配置
①配置防火墙放行服务
[root@192 ~]# firewall-cmd --permanent --add-port=80/tcp
success
[root@192 ~]# firewall-cmd --reload
success
②.关闭防火墙
[root@192 ~]# systemctl stop firewalld.service
[root@192 ~]# systemctl disable firewalld.service
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
3.开启包转发功能
[root@192 ~]# sysctl -w net.ipv4.ip_forward=1
net.ipv4.ip_forward = 1
八、检查系统磁盘空间状况
[root@192 ~]# fdisk -l
Disk /dev/sda: 128.8 GB, 128849018880 bytes, 251658240 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x0009df2e
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 4196351 2097152 83 Linux
/dev/sda2 4196352 29362175 12582912 83 Linux
/dev/sda3 29362176 37750783 4194304 83 Linux
/dev/sda4 37750784 251658239 106953728 5 Extended
/dev/sda5 37752832 251658239 106952704 83 Linux
[root@192 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda5 102G 1.1G 101G 2% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 3.9G 12M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sda2 12G 33M 12G 1% /home
/dev/sda3 4.0G 377M 3.7G 10% /var
/dev/sda1 2.0G 127M 1.9G 7% /boot
tmpfs 797M 0 797M 0% /run/user/0