[CentOS 7] Network 관련 셋팅 명령어 정리

 

 

방화벽

-- 방화벽 정지하기
[root@localhost /]# systemctl stop firewalld

-- 방화벽 시작하기
[root@localhost /]# systemctl start firewalld

 

-- 방화벽 설정
[root@localhost /]# firewall-cmd --permanent --zone=public --add-port=6379/tcp
[root@localhost /]# firewall-cmd --reload


-- 방화벽 체크
[root@localhost /]# vi /etc/firewalld/zones/public.xml

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IP 확인 및 변경

[root@localhost /]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:15:5d:12:a2:00 brd ff:ff:ff:ff:ff:ff
    inet 192.168.137.88/24 brd 192.168.137.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::215:5dff:fe12:a200/64 scope link
       valid_lft forever preferred_lft forever

 

-- 네트워크 설정 경로
[root@localhost /]# cd /etc/sysconfig/network-scripts/


-- 네트워크 설정 파일
[root@localhost network-scripts]# ls
70-persistent-ipoib.rules  ifdown           ifdown-bnep  ifdown-ippp  ifdown-post    ifdown-sit     ifup-Team      ifup-bnep  ifup-ippp  ifup-plip   ifup-ppp     ifup-tunnel       network-functions
ifcfg-eth0                 ifdown-Team      ifdown-eth   ifdown-ipv6  ifdown-ppp     ifdown-tunnel  ifup-TeamPort  ifup-eth   ifup-ipv6  ifup-plusb  ifup-routes  ifup-wireless     network-functions-ipv6
ifcfg-lo                   ifdown-TeamPort  ifdown-ib    ifdown-isdn  ifdown-routes  ifup           ifup-aliases   ifup-ib    ifup-isdn  ifup-post   ifup-sit     init.ipv6-global

ip addr 명령어로 네트워크를 확인하였을때, lo와 eth0 두개의 네트워크가 보이는 걸 알 수 있다. 

lo 는 항상 보여지는 것 같고 (정확히는....)

eho0 네트워크가 기본적으로  UP 상태인 것을 확인 할 수 있다.

 

[root@localhost network-scripts]# vi ifcfg-eth0




TYPE=Ethernet
BOOTPROTO=dhcp	-- dhcp 설정상태
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=eth0
UUID=d7790772-01fe-426c-a759-ade7a7159902
DEVICE=eth0
ONBOOT=yes		-- 최초 no 로 설정되어 있으며, 재부팅시 계속사용한다면 yes로 변경

 

변경 후에는, network를 재시작 혹은 재부팅 해주면 됩니다.

[root@localhost network-scripts]# systemctl restart network

혹은

[root@localhost network-scripts]# service network restart

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