http localhost 50070 does not work HADOOP

Question

I already installed Hadoop on my machine  Ubuntu 13 05  and now I have an error when browsing localhost 50070 the browser says that the page does not exist

User · Answer

if you are running and old version of Hadoop  hadoop 1 2  you got an error because http   localhost 50070 dfshealth html does nt exit  Check http   localhost 50070 dfshealth jsp which works

User · Answer

Since Hadoop 3 0 0 - Alpha 1 there was a Change in the port configuration   http   localhost 50070   was moved to   http   localhost 9870  see https   issues apache org jira browse HDFS-9427

User · Answer

If you can open the http   localhost 8088 cluster but can t open http   localhost 50070   Maybe datanode didn t start-up or namenode didn t formate   Hadoop version 2 6 4   step 1    check whether your namenode has been formated  if not type     stop-all sh    path to hdfs namenode -format   start-all sh    step 2     check your namenode tmp file path  to see in  tmp  if the namenode directory is in  tmp  you need set tmp path in core-site xml  because every time when you reboot or start your machine  the files in  tmp will be removed  you need set a tmp dir path   add the following to it    lt property gt       lt name gt hadoop tmp dir lt  name gt       lt value gt  path to hadoop tmp lt  value gt   lt  property gt     step 3    check step 2  stop hadoop and remove the namenode tmp dir in  tmp  then type  path to hdfs namenode -format  and start the hadoop  The is also a tmp dir in  HADOOP HOME  If all the above don t help  please comment below

User · Answer

There is a similar question and answer at  Start Hadoop 50075 Port is not resolved  Take a look at your core-site xml file to determine which port it is set to  If 0  it will randomly pick a port  so be sure to set one

User · Answer

Try  namenode -format start-all sh stop-all sh jps   see namenode and datanode are running and browse  localhost 50070   If localhost 50070 is still not working  then you need to allows ports  So  check  netstat -anp   grep 50070

User · Answer

First  check that java processes that are running using  jps   If you are in a pseudo-distributed mode you must have the following proccesses    Namenode Jobtracker Tasktracker Datanode SecondaryNamenode   If you are missing any  use the restart commands    HADOOP INSTALL bin stop-all sh  HADOOP INSTALL bin start-all sh   It can also be because you haven t open that port on the machine   iptables -A INPUT -p tcp --dport 50070 -j ACCEPT

User · Answer

For recent hadoop versions  I m using 2 7 1   The start stop scripts are located in the sbin folder  The scripts are      sbin start-dfs sh   sbin stop-dfs sh   sbin start-yarn sh   sbin stop-yarn sh   I didn t have to do anything with yarn though to get the NameNodeServer instance running   Now my mistake was that I didn t format the NameNodeServer HDFS   bin hdfs namenode -format   I m not quite sure what that does at the moment but it obviously prepares the space on which the NameNodeServer will use to operate

User · Answer

step 1   bin stop-all sh step 2   bin hadoop namenode -format step 3   bin start-all sh

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After installing and configuring Hadoop  you can quickly run the command netstat -tulpn   to find the ports open  In the new version of Hadoop 3 1 3 the ports are as follows -  localhost 8042  Hadoop  localhost 9870  HDFS   localhost 8088  YARN

User · Answer

First all need to do is start hadoop nodes and Trackers  simply by typing  start-all sh on ur terminal  To check all the trackers and nodes are started write  jps  command  if everything is fine and working  go to your browser type the following url http   localhost 50070

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port 50070 changed to 9870 in 3 0 0-alpha1  In fact  lots of others ports changed too  Look   Namenode ports  50470 -- gt  9871  50070 -- gt  9870  8020 -- gt  9820 Secondary NN ports  50091 -- gt  9869  50090 -- gt  9868 Datanode ports  50020 -- gt  9867  50010 -- gt  9866  50475 -- gt  9865  50075 -- gt  9864   Source

User · Answer

Enable the port in your system it is for CentOS 7 flow the commands below  1 firewall-cmd --get-active-zones  2 firewall-cmd --zone dmz --add-port 50070 tcp --permanent  3 firewall-cmd --zone public --add-port 50070 tcp --permanent  4 firewall-cmd --zone dmz --add-port 9000 tcp --permanent   5 firewall-cmd --zone public --add-port 9000 tcp --permanent  6 firewall-cmd --reload

[hadoop] http://localhost:50070 does not work HADOOP

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