最小化完成虛擬機安裝過程
登陸服務器之后需要需要做的一些基礎配置如下：
一：配置yum源-采用本地yum源方式
# 使用命令ip a 查看Ip地址，使用遠程連接工具連接到虛擬機
# 如果沒有Ip 使用dhclinet 命令獲取Ip地址
[root@localhost ~]# ip a | grep inet
# rhel7的yum源配置方式:
# rhel8的yum源配置方式:
# 使用mount命令掛載磁盤，如果掛載提示如下，則檢查虛擬機的光盤掛載情況
mount: /mnt: no medium found on /dev/sr0.
[root@localhost ~]# mount /dev/cdrom /mnt # 將磁盤掛載到/mnt目錄中
mount: /mnt: WARNING: device write-protected, mounted read-only. # 提示這個則掛載成功
# 編寫yum源的配置文件
cat <<EOF>> /etc/yum.repos.d/rhel8-2.repo
[BaseOS]
baseurl=file:///mnt/BaseOS/
enable=1
gpgcheck=0
[AppStream]
baseurl=file:////mnt/AppStream/
enable=1
gpgcheck=0
EOF
[root@localhost yum.repos.d]# yum repolist # 查看yum源是否配置成功
Failed to set locale, defaulting to C.UTF-8
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Repository 'BaseOS' is missing name in configuration, using id.
Repository 'AppStream' is missing name in configuration, using id.
repo id repo name
AppStream AppStream
BaseOS BaseOS
二：安裝基礎軟件包
[root@localhost ~]# yum -y install bash-completion # 安裝bash-completion工具，可以使用tab鍵補全命令
[root@localhost ~]# yum -y install vim # 習慣使用vim的命令，所以安裝vim包
[root@localhost ~]# yum -y install net-tools # 安裝net-tools工具，支持netstat命令
[root@localhost ~]# rpm -ql net-tools | grep sbin # 查看安裝net-tools所產生的命令
/usr/sbin/arp
/usr/sbin/ether-wake
/usr/sbin/ifconfig
/usr/sbin/ipmaddr
/usr/sbin/iptunnel
/usr/sbin/mii-diag
/usr/sbin/mii-tool
/usr/sbin/nameif
/usr/sbin/plipconfig
/usr/sbin/route
/usr/sbin/slattach
三：調整防火牆策略
此配置用於學習實驗環境配置，將防火牆以及selinux進行關閉
[root@localhost ~]# systemctl disable firewalld.service
[root@localhost ~]# vim /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=permissive #此參數關閉
# SELINUXTYPE= can take one of these three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
自此基本的使用配置已經完成，有操作習慣的包也安裝上