Adding the HortonWorks public GPG key to apt failure in CDAP VMs

 
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In /opt/app/dcae-cdap-small-hadoop/install.sh to install-steps/install-hortonworks-hadoop.sh


Failure seen for line in console log

# echo "Adding the HortonWorks public GPG key to apt..."
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 07513CAD


2017-06-28 20:24:49 (4.92 MB/s) - '/etc/apt/sources.list.d/hdp.list' saved [201/201]

Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.6OZB1SNjAu --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv 07513CAD
gpg: requesting key 07513CAD from hkp server keyserver.ubuntu.com
?: keyserver.ubuntu.com: Connection refused
gpgkeys: HTTP fetch error 7: couldn't connect: Connection refused
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
apt-get update...


now accessing cdap on 9999 port redirects to login page. Auto login doesn't work


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    3 answers

    1.  
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      Ran the following steps manually in all 3 CDAP VMs


      sudo su hdfs -c "JAVA_HOME=/opt/app/java/jdk/jdk170 hadoop fs -mkdir -p /cdap && hadoop fs -chown yarn /cdap"


      sudo su hdfs -c "JAVA_HOME=/opt/app/java/jdk/jdk170 hadoop fs -mkdir -p /cdap/tx.snapshot && hadoop fs -chown yarn /cdap/tx.snapshot"

      Also modified the interface eth1 configuration to static (because ssh will not work after reboot since both eth0 and eth1 interfaces uses DHCP and that's not correct).


      Rebooted the 3 CDAP VMs and boom.


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      1.  
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        This is because executing apt-key using sudo

        sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 07513CAD

        Even if we pass environment variables install-hortonworks-hadoop.sh the addition of key still fails. 

        sudo -E apt-key adv --keyserver keyserver.ubuntu.com --recv 07513CAD solved the problem. 

        But still its redirecting me to login page and from the notifications I can see following error


        404 <HTML><HEAD> <TITLE>Network Error</TITLE> </HEAD> <BODY> <FONT face="Helvetica"> <big><strong></strong></big><BR> </FONT> <blockquote> <TABLE border=0 cellPadding=1 width="80%"> <TR><TD> <FONT face="Helvetica"> <big>Network Error (dns_unresolved_hostname)</big> <BR> <BR> </FONT> </TD></TR> <TR><TD> <FONT face="Helvetica"> Your requested host "zldcbm01njcdap02" could not be resolved by DNS. </FONT> </TD></TR> <TR><TD> <FONT face="Helvetica"> </FONT> </TD></TR> <TR><TD> <FONT face="Helvetica" SIZE=2> <BR> </FONT> </TD></TR> </TABLE> </blockquote> </FONT> </BODY></HTML>


        However /etc/hosts in all 3 VMs are proper and resolving the hostname zldcbm01njcdap02


        root@zldcbm01njcdap01:~# cat /etc/hosts
        127.0.0.1 localhost

        # The following lines are desirable for IPv6 capable hosts
        ::1 ip6-localhost ip6-loopback
        fe00::0 ip6-localnet
        ff00::0 ip6-mcastprefix
        ff02::1 ip6-allnodes
        ff02::2 ip6-allrouters
        ff02::3 ip6-allhosts
        10.0.4.103 zldcbm01njcdap00.dcae.simpledemo.openecomp.org zldcbm01njcdap00
        10.0.4.104 zldcbm01njcdap01.dcae.simpledemo.openecomp.org zldcbm01njcdap01
        10.0.4.105 zldcbm01njcdap02.dcae.simpledemo.openecomp.org zldcbm01njcdap02
        162.242.254.138 ecomp-nexus
        root@zldcbm01njcdap01:~# ping zldcbm01njcdap02
        PING zldcbm01njcdap02.dcae.simpledemo.openecomp.org (10.0.4.105) 56(84) bytes of data.
        64 bytes from zldcbm01njcdap02.dcae.simpledemo.openecomp.org (10.0.4.105): icmp_seq=1 ttl=64 time=1.72 ms
        ^C
        --- zldcbm01njcdap02.dcae.simpledemo.openecomp.org ping statistics ---
        1 packets transmitted, 1 received, 0% packet loss, time 0ms
        rtt min/avg/max/mdev = 1.729/1.729/1.729/0.000 ms
        root@zldcbm01njcdap01:~#


        Also seen errors like following while installing cdap packages 


        ## install-cdap-pkgs.sh
        mkdir: `/cdap': Input/output error
        mkdir: `/cdap/tx.snapshot': Input/output error
        Configuring CDAP 3.5 apt-get repo...


        Any help would be appreciated. 

        1. kranthi guttikonda

          Vijay Venkatesh Kumar Can you please help me over here?

        2. Vijay Venkatesh Kumar

          Sorry, not something I've encountered. I can reach out to development team (lr0306@att.com) for further assistance if needed.

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      2.  
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        @kranthi guttikonda, opening http://vm1-dcae-cdap02:9999/ worked out-of-the-box for me after my last restart of DCAE. Seems to be indeed your proxy creating issues.

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