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https://issues.apache.org/jira/browse/AMBARI-14726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alejandro Fernandez resolved AMBARI-14726.
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Resolution: Duplicate
Actually, that issue is already fixed in Ambari 2.1.2 by
https://issues.apache.org/jira/browse/AMBARI-12979
> Knox Gateway start fails on HDP 2.3.4 due to wrong symlink
> ----------------------------------------------------------
>
> Key: AMBARI-14726
> URL: https://issues.apache.org/jira/browse/AMBARI-14726
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.2.1
> Reporter: Alejandro Fernandez
> Fix For: 2.2.1
>
>
> Posted on the forum:
> https://community.hortonworks.com/questions/7750/knox-gateway-start-fail.html
> by Jose Guillen
> Install HDP 2.3.latest with Knox on a single host.
> Immediately after install, restart Knox.
> It fails with this error on both JDK 1.7 and 1.8
> {code}
> 2016-01-15 15:37:00,440 -
> Execute['/usr/hdp/current/knox-server/bin/knoxcli.sh create-master --master
> [PROTECTED]'] {'environment': {'JAVA_HOME': u'/usr/jdk64/jdk1.7.0_67'},
> 'not_if': "ambari-sudo.sh su knox -l -s /bin/bash -c 'test -f
> /var/lib/knox/data/security/master'", 'user': 'knox'}
> {code}
> Originates to
> /var/lib/ambari-agent/cache/common-services/KNOX/0.5.0.2.2/package/scripts/knox.py
> {code}
> cmd = format('{knox_client_bin} create-master --master
> {knox_master_secret!p}')
> master_secret_exist = as_user(format('test -f {knox_master_secret_path}'),
> params.knox_user)
> Execute(cmd,user=params.knox_user,environment={'JAVA_HOME':
> params.java_home},not_if=master_secret_exist,)
> {knox_master_secret_path}
> {code}
> resolves to /var/lib/knox/data/security/master (as defined in
> /var/lib/ambari-agent/cache/common-services/KNOX/0.5.0.2.2/package/scripts/params_linux.py).
> The problem is that the Knox master file does not exist on this location.
> The directory /var/lib/knox/data does exist, but the content is empty.
> Instead, the master key is located here:
> /usr/hdp/current/knox-server/data/security/master
> In the file
> /var/lib/ambari-agent/cache/common-services/KNOX/0.5.0.2.2/package/scripts/knox_gateway.py,
> I also see something with removing/setting symbolic links:
> {code}
> # Used to setup symlink, needed to update the knox managed symlink, in case
> of custom locations
> if os.path.islink(params.knox_managed_pid_symlink) and
> os.path.realpath(params.knox_managed_pid_symlink) != params.knox_pid_dir:
> os.unlink(params.knox_managed_pid_symlink)
> os.symlink(params.knox_pid_dir, params.knox_managed_pid_symlink)
> {code}
> Perhaps something goes wrong with the symbolic links? (when you install
> HDP2.3 successfully, but try to restart all services immediately after the
> installation?)
> ----
> In any case, the following modification resolved the issue for me.. I'm not
> sure if it covers everything (e.g. what will happen if you change the Knox
> master key via the Ambari web interface??), but I don't have any more time to
> be stuck on this issue
> Open
> /var/lib/ambari-agent/cache/common-services/KNOX/0.5.0.2.2/package/scripts/params_linux.py
> Change:
> {code}
> knox_master_secret_path = '/var/lib/knox/data/security/master'
> knox_cert_store_path = '/var/lib/knox/data/security/keystores/gateway.jks'
> {code}
> to:
> {code}
> knox_master_secret_path = '/usr/hdp/current/knox-server/data/security/master'
> knox_cert_store_path =
> '/usr/hdp/current/knox-server/data/security/keystores/gateway.jks'
> {code}
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