When deploying HDP using Ambari 1.4.x or later on RHEL CentOS 6.5, click the “Failed” link on the Confirm Hosts page in the Cluster Install wizard to display the Agent logs. The following log entry indicates the SSL connection between the Agent and Server failed during registration:
INFO 2014-04-02 04:25:22,669 NetUtil.py:55 - Failed to connect to https://{ambari-server}:8440/cert/ca due to [Errno 1] _ssl.c:492: error:100AE081:elliptic curve routines:EC_GROUP_new_by_curve_name:unknown groupFor more detailed information about this OpenSSL issue, see https://bugzilla.redhat.com/show_bug.cgi?id=1025598
In certain recent Linux distributions (like RHEL/Centos/Oracle Linux 6.x), the default value
of nproc is lower than the value required if you are deploying the HBase service.
To change this value:
Check the OpenSSL library version installed on your host(s):
rpm -qa | grep
openssl openssl-1.0.1e-15.el6.x86_64
If the output reads
openssl-1.0.1e-15.x86_64 (1.0.1 build 15)you must upgrade the OpenSSL library by running the following command:yum upgrade openssl
Verify you have the newer version of OpenSSL (1.0.1 build 16):
rpm -qa | grep openssl
openssl-1.0.1e-16.el6.x86_64
Restart Ambari Agent(s) and Click “Retry Failed” on the Wizard.
