解决启动Hadoop集群,从节点没有启动(DataNode等) | 您所在的位置:网站首页 › hive启动不了跟HDFS有关系吗 › 解决启动Hadoop集群,从节点没有启动(DataNode等) |
问题
在集群主机点启动HDFS集群和YARN集群之后,查看各个节点启动情况:主节点全部启动成功,从节点启动失败 [root@master-node ~]# jps 6432 Jps 5427 NameNode 5811 ResourceManager 5531 DataNode 5917 NodeManager [root@slave-node1 ~]# jps 2244 Jps [root@slave-node2 ~]# jps 1818 Jps 原因查看从节点log日志,报了“域名解析错误”。查看域名配置文件/etc/hosts,发现只有主节点配置了,从节点都没有配置 [root@slave-node1 logs]# head -100 hadoop-root-datanode-slave-node1.log [root@slave-node1 ~]# vim /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6将主节点/etc/hosts文件远程复制到各个集群从节点上。 [root@master-node ~]# vim /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.159.10 master-node 192.168.159.11 slave-node1 192.168.159.12 slave-node2 [root@master-node ~]# scp /etc/hosts root@slave-node1:/etc/hosts [root@master-node ~]# scp /etc/hosts root@slave-node2:/etc/hosts 解决方案先关闭集群,再次启动集群,检查启动情况,都生效了 master-node节点 [root@master-node ~]# cd /opt/module/hadoop-2.7.4/sbin/ [root@master-node sbin]# start-dfs.sh [root@master-node sbin]# start-yarn.sh [root@master-node sbin]# jps 5427 NameNode 5811 ResourceManager 5531 DataNode 5917 NodeManager 6685 Jpsslave-node1节点 [root@slave-node1 ~]# jps 1922 DataNode 1994 SecondaryNameNode 2286 Jpsslave-node2节点 [root@slave-node2 ~]# jps 1586 DataNode 1818 Jps 1679 NodeManager
|
CopyRight 2018-2019 实验室设备网 版权所有 |