Linux questions
1.can not use ifconfig
http://blog.csdn.net/zjt289198457/article/details/6918644
add this : export PATH=$PATH:/sbinc
at the end of file /etc/profile
and then execute : source /etc/profile to make the change effect
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=hadoop
2.2 Change ip address and Gateway
path:/etc/sysconfig/network-scripts/ifcfg-eth0
old file:
# Intel Corporation 82545EM Gigabit Ethernet Controller (Copper)
DEVICE=eth0
BOOTPROTO=none
HWADDR=00:0c:29:d3:48:0e
ONBOOT=yes
NETMASK=255.255.0.0
IPADDR=172.27.35.222
GATEWAY=172.27.35.1
TYPE=Ethernet
new file
# Intel Corporation 82545EM Gigabit Ethernet Controller (Copper)
DEVICE=eth0
BOOTPROTO=none
HWADDR=00:0c:29:d3:48:0e
ONBOOT=yes
NETMASK=255.255.0.0
IPADDR=192.168.1.10
GATEWAY=192.168.1.100
TYPE=Ethernet
restart server :
ifdown ech0
ifup ech0 [same function : service network restart]
4.change hostname
hostname show host name
hostname hadoop --change one time
permenet change :
change file /etc/sysconfig/network
[root@localhost sysconfig]# cat network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=hadoop
5.ip bind with hostname
vi /etc/hosts
add a line :192.168.1.10 hadoop
6.close firewall
6.1.server iptable status
[root@hadoop etc]# service iptables status Table: filter Chain INPUT (policy ACCEPT) num target prot opt source destination 1 RH- Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0
Chain FORWARD (policy ACCEPT) num target prot opt source destination 1 RH-Firewall-1-INPUT all -- 0.0.0.0/0
0.0.0.0/0
Chain OUTPUT (policy ACCEPT) num target prot opt source destination
6.2 service iptables start/stop
iptables {start|stop|restart|condrestart|status|panic|save}
7.check firewall server is run or not
7.1 grep iptables server's status
[root@hadoop etc]# chkconfig --list |grep iptables
iptables 0:off 1:off 2:on 3:on 4:on 5:on 6:off
7.2 close all firewall's service and check status
[root@hadoop etc]# chkconfig iptables off
[root@hadoop etc]# chkconfig --list |grep iptables
iptables 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[root@hadoop etc]#
