https://community.cloudera.com/t5/Support-Questions/Step-by-step-setup-for-Sandbox-Needed/m-p/233859#M195682 <P><A rel="user" href="https://community.cloudera.com/users/43202/koopsofttrial.html" nodeid="43202">@John Koop</A></P><P>From your attached screenshot looks like 8888 port is not accessible outside sandbox which should not happen. So we can do the following testing to check few things:</P><P>1. Login to Sandbox and check if the port 8888 is actually opened.</P><PRE># ssh root@127.0.0.1 -p 2222 # netstat -tnlpa | grep 8888</PRE><P>.</P><P>2. Also please check the default <STRONG>"/etc/hosts" </STRONG>inside the sandbox which usually looks like something as following if you have not modified it. "below is output from my HDP 2.6" sandbox.</P><PRE>[root@sandbox ~]# cat /etc/hosts 127.0.0.1 localhost ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters 172.17.0.2 sandbox.hortonworks.com sandbox</PRE><P>3. If we see that the port is opened then we will need to check if by default Firewall is not causing any issue:</P><PRE># service iptables status # service iptables stop</PRE><P>.</P><P>4. Next we will check if the Port forwarding is correct and the 8888 port is unblocked and allows port forwarding. Please see the below link for port forwarding configuration and validation:</P><P><A href="https://community.hortonworks.com/articles/65914/how-to-add-ports-to-the-hdp-25-virtualbox-sandbox.html" target="_blank">https://community.hortonworks.com/articles/65914/how-to-add-ports-to-the-hdp-25-virtualbox-sandbox.html</A></P><P>5. Still if you face any issue then try restarting the HDP Sandbox and then try again.</P><P>6. If the issue still occurs then try re importing the HDP sandbox images and then try again.</P><P>.</P><P><STRONG>Reference: </STRONG> For step by step Sandbox installation the following link is useful: <A href="https://hortonworks.com/hadoop-tutorial/learning-the-ropes-of-the-hortonworks-sandbox/" target="_blank">https://hortonworks.com/hadoop-tutorial/learning-the-ropes-of-the-hortonworks-sandbox/</A></P> Tue, 29 Aug 2017 08:19:36 GMT jsensharma 2017-08-29T08:19:36Z