Hi Jérémy,
Would you set "dfs.namenode.rpc-address" to "master:9000" in
hdfs-site.xml? The NameNode RPC address is "localhost:8020" by default
and that's why only the DataNode running on master is registered.
DataNodes running on slave1/slave2 want to connect to "localhost:8020"
and cannot find the NameNode because NameNode is not running on slave1
or slave2.
-Akira
2018年12月24日(月) 0:13 Jérémy C :
>
> Hello everyone,
>
>
> I installed hadoop 3.1.1 on 3 virtual machines with VMware on Ubuntu. When I
> run hdfs namenode -format and start-all.sh then jps works correctly on my
> master and two slaves nodes.
>
> However, with the command hdfs dfsadmin -report, I can see only one live data
> node (I get the same result when I check on master:50070 or 8088).
>
>
> I tried to disable firewall as follows: ufw disable but it didn't solve the
> problem. The 3 machines can connect with each other (without passwd) with
> ping and ssh. I also deleted the hadoop tmp folder with datanode and namenode
> folders but it didn't work as well. There are also no issues shown in the log
> files.
>
>
> Do you have any solutions to get three live datanode instead of one? Thanks.
>
>
> You will find attached my configurations files.
>
>
>
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