一、配置網絡
vi /etc/sysconfig/network-scripts/ifcfg-eno160
HWADDR=00:0c:29:14:34:51
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
USERCTL=no
NM_CONTROLLED=no
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=eno160
ONBOOT=yes
IPADDR=192.168.117.128
NETMASK=255.255.255.0
GATEWAY=192.168.117.2
DNS1=192.168.117.2
關鍵配置：
TYPE=Ethernet
BOOTPROTO=static
NAME=eno160
ONBOOT=yes
IPADDR=192.168.117.128
NETMASK=255.255.255.0
GATEWAY=192.168.117.2
DNS1=192.168.117.2
cat /etc/resolv.conf
nameserver 192.168.117.2
2.通過文本工具nmtui修改網絡配置
yum -y install NetworkManager-tui
nmtui-edit eno160 修改網卡配置
nmtui-connect eno160
重啟網絡
systemctl restart network
systemctl status network
修改主機名：
vi /etc/hostname
centos
退出重新登錄即可生效
二、關閉不必要的服務
最小化安裝的Centos7系統並沒有nano、vim、wget、curl、ifconfig、lsof命令，這裡首先安裝一下：
yum -y install nano vim wget curl net-tools lsof
可以通過netstat和lsof查看系統都運行了哪些服務，將不必要的進行關閉
systemctl stop postfix
systemctl stop avahi-daemon
systemctl disable postfix
systemctl disable avahi-daemon
systemctl list-unit-files 查看正在運行服務的狀態報告
systemctl start httpd.service 啟動服務
systemctl stop httpd.service 關閉服務
systemctl restart httpd.service 重啟服務
systemctl reload httpd.service 重新加載服務
systemctl disable httpd.service 開機不啟動
systemctl enable httpd.service 開機啟動
systemctl status httpd.service 查看服務運行狀態
systemctl show httpd.service 顯示服務或任務的屬性
systemctl list-dependencies httpd.service 檢查服務依賴關係
systemctl is-enabled httpd.service 檢查服務是否開機啟動及級別
systemctl -H 192.168.111.11 start httpd.service 啟動192.168.111.11機器上的httpd服務
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