启动hadoop出现ssh: connect to host master port 22: No route to host 问题解决方案
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出现这个问题的原因是NameNode IP地址或者DateNode IP地址发生了变化。解决方案:
将对应的结点IP地址设置为固定IP地址即可。注意,我所使用的是centos7.3
具体做法如下:
利用 vim /etc/sysconfig/network-scripts/ifcfg-eth0 打开对应的网卡配置文件,下面我以无线网卡为例,讲解具体的配置方案
HWADDR=60:D8:19:D4:A5:E2ESSID="X4140"
MODE=Managed
KEY_MGMT=WPA-PSK
TYPE=Wireless
BOOTPROTO=static #将这个改为具体模式
IPADDR=192.168.1.121 #对应host文件的具体IP
NETMASK=255.255.255.0 #子网掩码
GATEWAY=192.168.1.1 #默认网关
DNS1=192.168.1.1
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=X4140
UUID=4eee027c-d4ab-4f64-b2bf-1d8cdd697954
ONBOOT=yes
SECURITYMODE=open
MAC_ADDRESS_RANDOMIZATION=default
PEERDNS=yes
设置成功后reoot计算机
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