搭建Hadoop单节点

准备：
Linux版本是CentOS 8.0
Jdk版本1.8 压缩包
hadoop 2.6.5 压缩包

1.查看网卡名称 ifconfig

[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.20.100  netmask 255.255.255.0  broadcast 192.168.20.255
        inet6 fe80::4aa9:a2d4:3cd5:5d08  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:4b:38:aa  txqueuelen 1000  (Ethernet)
        RX packets 132312  bytes 190805974 (181.9 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 10645  bytes 875953 (855.4 KiB)
        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 360  bytes 31296 (30.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 360  bytes 31296 (30.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:66:f3:92  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

2.编辑网卡

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33

BOOTPROTO=static  // 设置成静态IP
NAME=ens33
DEVICE=ens33     // 网卡名称 必须和设备名一致
ONBOOT=yes      // 系统启动时激活网卡
IPADDR=192.168.20.100    // IP地址 与网关前几位对应
NETMASK=255.255.255.0   //  子网掩码
GATEWAY=192.168

搭建Hadoop单节点

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