笺注：这是在 CentOS8安装LNMP+phpMyAdmin 的基础上进行的。
安装network服务：
[root@centos8 ~]# yum -y install network-scripts
编辑网卡的IP地址、DNS地址等等：
[root@centos8 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens160
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens160"
UUID="bb322997-e819-4929-9afe-e3ac9338162d"
DEVICE="ens160"
ONBOOT="yes"
IPADDR="192.168.168.154"
PREFIX="24"
GATEWAY="192.168.168.2"
DNS1="8.8.8.8"
DNS2="114.114.114.114"
IPV6_PRIVACY="no"
重启network服务后，更改生效：
[root@centos8 ~]# systemctl restart network
开机自动开启network服务：
[root@centos8 ~]# systemctl enable network
network.service is not a native service, redirecting to systemd-sysv-install.
Executing: /usr/lib/systemd/systemd-sysv-install enable network
[root@centos8 ~]#
[root@centos8 ~]# systemctl is-enabled network
network.service is not a native service, redirecting to systemd-sysv-install.
Executing: /usr/lib/systemd/systemd-sysv-install is-enabled network
enabled
最小化安装的话，会有一些命令没有安装：
[root@centos8 ~]# which netstat
/usr/bin/which: no netstat in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin)
[root@centos8 ~]#
[root@centos8 ~]# which ifconfig
/usr/bin/which: no ifconfig in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin)
[root@centos8 ~]# yum -y install net-tools
[root@centos8 ~]# which netstat
/usr/bin/netstat
[root@centos8 ~]#
[root@centos8 ~]# which ifconfig
/usr/sbin/ifconfig
查看所有网卡：
[root@centos8 ~]# ifconfig
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.168.154 netmask 255.255.255.0 broadcast 192.168.168.255
inet6 fe80::92ab:5fb4:5373:ad53 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:cb:1e:40 txqueuelen 1000 (Ethernet)
RX packets 11289 bytes 10557647 (10.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5005 bytes 1107050 (1.0 MiB)
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 68 bytes 4624 (4.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 68 bytes 4624 (4.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
查看某张网卡：
[root@centos8 ~]# ifconfig ens160
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.168.154 netmask 255.255.255.0 broadcast 192.168.168.255
inet6 fe80::92ab:5fb4:5373:ad53 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:cb:1e:40 txqueuelen 1000 (Ethernet)
RX packets 11302 bytes 10559758 (10.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5018 bytes 1109034 (1.0 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
显示网卡的网关：
[root@centos8 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.168.2 0.0.0.0 UG 100 0 0 ens160
192.168.168.0 0.0.0.0 255.255.255.0 U 100 0 0 ens160
查看本机所使用的DNS服务器地址：
[root@centos8 ~]# cat /etc/resolv.conf
# Generated by NetworkManager
search zhuohua.store
nameserver 8.8.8.8
nameserver 114.114.114.114
注释：一般在网卡的配置文件上配置DNS地址。
[root@centos8 ~]# killall
-bash: killall: 未找到命令
[root@centos8 ~]# dnf -y install psmisc
[root@centos8 ~]# which killall
/usr/bin/killall
测试：
[root@centos8 ~]# systemctl start nginx
[root@centos8 ~]# pgrep -l nginx
1483 nginx
1485 nginx
[root@centos8 ~]# echo $?
0
[root@centos8 ~]# ps -ef |grep nginx |grep -v grep
root 1483 1 0 14:22 ? 00:00:00 nginx: master process /usr/sbin/nginx
nginx 1485 1483 0 14:22 ? 00:00:00 nginx: worker process
[root@centos8 ~]#
[root@centos8 ~]# echo $?
0
[root@centos8 ~]# netstat -anp |grep nginx
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1483/nginx: master
tcp6 0 0 :::80 :::* LISTEN 1483/nginx: master
unix 3 [ ] STREAM CONNECTED 30962 1483/nginx: master
unix 2 [ ] STREAM CONNECTED 30964 1485/nginx: worker
unix 3 [ ] STREAM CONNECTED 30963 1483/nginx: master
[root@centos8 ~]# echo $?
0
杀死Nginx的进程：
[root@centos8 ~]# killall -9 nginx
[root@centos8 ~]#
[root@centos8 ~]# pgrep -l nginx
[root@centos8 ~]# echo $?
1
[root@centos8 ~]#
[root@centos8 ~]# ps -ef |grep nginx |grep -v grep
[root@centos8 ~]# echo $?
1
[root@centos8 ~]#
[root@centos8 ~]# netstat -anp |grep nginx
[root@centos8 ~]# echo $?
1
相关文章：
最小化安装CentOS8
CentOS8_网络基础
CentOS6_网络基础 |
