@H_301_0@[root@cdh1 Desktop]# ls down [root@cdh1 Desktop]# ifcongfig bash: ifcongfig: command not found [root@cdh1 Desktop]# ifconfig eth4 Link encap:Ethernet HWaddr 00:0C:29:DF:7B:2A inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fedf:7b2a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:24 errors:0 dropped:0 overruns:0 frame:0 TX packets:21 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:11264 (11.0 KiB) TX bytes:2163 (2.1 KiB) Interrupt:19 Base address:0x2024 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:960 (960.0 b) TX bytes:960 (960.0 b) [root@cdh1 Desktop]# df -lh Filesystem Size Used Avail Use% Mounted on /dev/sda2 5.7G 4.2G 1.2G 79% / tmpfs 504M 76K 504M 1% /dev/shm /dev/sda4 7.9G 743M 6.8G 10% /user /dev/sda1 291M 32M 245M 12% /boot [root@cdh1 Desktop]# cat /etc/sysconfig/network #NETWORKING=yes #HOSTNAME=data02 NETWORKING=yes HOSTNAME=cdh1 NETWORKING_IPV6=no PEERNTP=no [root@cdh1 Desktop]# cat /etc/sysconfig/network #NETWORKING=yes #HOSTNAME=data02 NETWORKING=yes HOSTNAME=cdh1 NETWORKING_IPV6=no PEERNTP=no [root@cdh1 Desktop]# vi /etc/sysconfig/network [root@cdh1 Desktop]# cat /etc/sysconfig/network #NETWORKING=yes #HOSTNAME=data02 NETWORKING=yes HOSTNAME=cdh3 NETWORKING_IPV6=no PEERNTP=no [root@cdh1 Desktop]# cat /etc/hosts #127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 name01 #::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 cdh1 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 #127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 #::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 #10.99.174.85 hadoop.example.com hadoop #192.168.0.101 name01 #192.168.0.102 data01 #192.168.0.103 data02 192.168.0.103 cdh1 #192.168.111.126 cdh1 #192.168.111.127 cdh2 #192.168.111.128 cdh3 [root@cdh1 Desktop]# cat /etc/hosts #127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 name01 #::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 cdh1 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 #127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 #::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 #10.99.174.85 hadoop.example.com hadoop #192.168.0.101 name01 #192.168.0.102 data01 #192.168.0.103 data02 192.168.0.103 cdh1 #192.168.111.126 cdh1 #192.168.111.127 cdh2 #192.168.111.128 cdh3 [root@cdh1 Desktop]# vi /etc/hosts [root@cdh1 Desktop]# cat /etc/hosts #127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 name01 #::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 cdh3 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 #127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 #::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 #10.99.174.85 hadoop.example.com hadoop #192.168.0.101 name01 #192.168.0.102 data01 #192.168.0.103 data02 192.168.0.104 cdh3 #192.168.111.126 cdh1 #192.168.111.127 cdh2 #192.168.111.128 cdh3 [root@cdh1 Desktop]# ifconfig eth4 Link encap:Ethernet HWaddr 00:0C:29:DF:7B:2A inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fedf:7b2a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1038 errors:0 dropped:0 overruns:0 frame:0 TX packets:62 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:83932 (81.9 KiB) TX bytes:4918 (4.8 KiB) Interrupt:19 Base address:0x2024 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:960 (960.0 b) TX bytes:960 (960.0 b) [root@cdh1 Desktop]# vi /etc/hosts [root@cdh1 Desktop]# ifconfig eth4 Link encap:Ethernet HWaddr 00:0C:29:DF:7B:2A inet addr:192.168.0.102 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fedf:7b2a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1038 errors:0 dropped:0 overruns:0 frame:0 TX packets:62 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:83932 (81.9 KiB) TX bytes:4918 (4.8 KiB) Interrupt:19 Base address:0x2024 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:960 (960.0 b) TX bytes:960 (960.0 b) [root@cdh1 Desktop]# ls -l /etc/sysconfig/network-scripts/ total 208 -rw-r--r--. 3 root root 260 Jul 4 2015 ifcfg-eth2.bak -rw-r--r-- 1 root root 260 Jun 16 16:36 ifcfg-eth3 -rw-r--r--. 1 root root 254 Jan 9 2013 ifcfg-lo lrwxrwxrwx. 1 root root 20 Sep 9 2013 ifdown -> ../../../sbin/ifdown -rwxr-xr-x. 1 root root 627 Jan 9 2013 ifdown-bnep -rwxr-xr-x. 1 root root 5397 Jan 9 2013 ifdown-eth -rwxr-xr-x. 1 root root 781 Jan 9 2013 ifdown-ippp -rwxr-xr-x. 1 root root 4168 Jan 9 2013 ifdown-ipv6 lrwxrwxrwx. 1 root root 11 Sep 9 2013 ifdown-isdn -> ifdown-ippp -rwxr-xr-x. 1 root root 1481 Jan 9 2013 ifdown-post -rwxr-xr-x. 1 root root 1064 Jan 9 2013 ifdown-ppp -rwxr-xr-x. 1 root root 835 Jan 9 2013 ifdown-routes -rwxr-xr-x. 1 root root 1370 Jan 9 2013 ifdown-sit -rwxr-xr-x. 1 root root 1434 Jan 9 2013 ifdown-tunnel lrwxrwxrwx. 1 root root 18 Sep 9 2013 ifup -> ../../../sbin/ifup -rwxr-xr-x. 1 root root 12365 Jan 9 2013 ifup-aliases -rwxr-xr-x. 1 root root 859 Jan 9 2013 ifup-bnep -rwxr-xr-x. 1 root root 10157 Jan 9 2013 ifup-eth -rwxr-xr-x. 1 root root 11971 Jan 9 2013 ifup-ippp -rwxr-xr-x. 1 root root 10401 Jan 9 2013 ifup-ipv6 [root@cdh1 Desktop]# mv /etc/sysconfig/network-scripts/ifcfg-eth3 /etc/sysconfig/network-scripts/ifcfg-eth2 [root@cdh1 Desktop]# ls -l /etc/sysconfig/network-scripts/ total 208 -rw-r--r-- 1 root root 260 Jun 17 07:53 ifcfg-eth2 -rw-r--r--. 3 root root 260 Jul 4 2015 ifcfg-eth2.bak -rw-r--r--. 1 root root 254 Jan 9 2013 ifcfg-lo lrwxrwxrwx. 1 root root 20 Sep 9 2013 ifdown -> ../../../sbin/ifdown -rwxr-xr-x. 1 root root 627 Jan 9 2013 ifdown-bnep -rwxr-xr-x. 1 root root 5397 Jan 9 2013 ifdown-eth -rwxr-xr-x. 1 root root 781 Jan 9 2013 ifdown-ippp -rwxr-xr-x. 1 root root 4168 Jan 9 2013 ifdown-ipv6 lrwxrwxrwx. 1 root root 11 Sep 9 2013 ifdown-isdn -> ifdown-ippp -rwxr-xr-x. 1 root root 1481 Jan 9 2013 ifdown-post -rwxr-xr-x. 1 root root 1064 Jan 9 2013 ifdown-ppp -rwxr-xr-x. 1 root root 835 Jan 9 2013 ifdown-routes -rwxr-xr-x. 1 root root 1370 Jan 9 2013 ifdown-sit -rwxr-xr-x. 1 root root 1434 Jan 9 2013 ifdown-tunnel lrwxrwxrwx. 1 root root 18 Sep 9 2013 ifup -> ../../../sbin/ifup -rwxr-xr-x. 1 root root 12365 Jan 9 2013 ifup-aliases -rwxr-xr-x. 1 root root 859 Jan 9 2013 ifup-bnep -rwxr-xr-x. 1 root root 10157 Jan 9 2013 ifup-eth -rwxr-xr-x. 1 root root 11971 Jan 9 2013 ifup-ippp -rwxr-xr-x. 1 root root 10401 Jan 9 2013 ifup-ipv6 lrwxrwxrwx. 1 root root 9 Sep 9 2013 ifup-isdn -> ifup-ippp -rwxr-xr-x. 1 root root 727 Jan 9 2013 ifup-plip -rwxr-xr-x. 1 root root 954 Jan 9 2013 ifup-plusb -rwxr-xr-x. 1 root root 2364 Jan 9 2013 ifup-post -rwxr-xr-x. 1 root root 4154 Jan 9 2013 ifup-ppp -rwxr-xr-x. 1 root root 1925 Jan 9 2013 ifup-routes -rwxr-xr-x. 1 root root 3499 Jan 9 2013 ifup-sit -rwxr-xr-x. 1 root root 2488 Jan 9 2013 ifup-tunnel -rwxr-xr-x. 1 root root 3770 Jan 9 2013 ifup-wireless -rwxr-xr-x. 1 root root 4623 Jan 9 2013 init.ipv6-global -rwxr-xr-x. 1 root root 1125 Jan 9 2013 net.hotplug -rw-r--r--. 1 root root 13079 Jan 9 2013 network-functions -rw-r--r--. 1 root root 29853 Jan 9 2013 network-functions-ipv6 [root@cdh1 Desktop]# /etc/init.d/network restart Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth2: Active connection state: activating Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/1 state: activated Connection activated [ OK ] [root@cdh1 Desktop]# ls -l /etc/sysconfig/network-scripts/