Problem in creating cloudera cluster

[#1]

I am building a cluster with 3 nodes. the cloudera manager is able to successfully install everything on 2 nodes but one of them fails

When I click on details I can see

Configuring Cloudera Manager Agent...

BEGIN grep server_host=155.17.148.40 /etc/cloudera-scm-agent/config.ini
END (1)
BEGIN sed -e 's/\(server_host=\).*/\1155.17.148.40/' -i /etc/cloudera-scm-agent/config.ini
END (0)
scm agent configured

Starting Cloudera Manager Agent...

BEGIN /sbin/service cloudera-scm-agent status | grep running
END (1)
BEGIN /sbin/service cloudera-scm-agent start
Starting cloudera-scm-agent: [FAILED]
END (1)
agent logs:
BEGIN tail -n 50 /var/log/cloudera-scm-agent//cloudera-scm-agent.out | sed 's/^/>>/'
>>/usr/lib64/cmf/agent/src/cmf/agent.py:24: DeprecationWarning: the sha module is deprecated; use the hashlib module instead
>> import sha
>>/usr/lib64/cmf/agent/src/cmf/parcel.py:15: DeprecationWarning: the sets module is deprecated
>> from sets import Set
>>[17/Dec/2014 14:13:31 +0000] 9557 MainThread agent INFO SCM Agent Version: 5.2.1
>>[17/Dec/2014 14:13:31 +0000] 9557 MainThread agent ERROR Could not determine hostname or ip address; proceeding.
>>Traceback (most recent call last):
>> File "/usr/lib64/cmf/agent/src/cmf/agent.py", line 1854, in parse_arguments
>> ip_address = socket.gethostbyname(fqdn)
>>gaierror: [Errno -3] Temporary failure in name resolution
>>usage: agent.py [-h] [--agent_dir AGENT_DIR

[#2]

This is my cloudera-scm-agent.out file

/usr/lib64/cmf/agent/src/cmf/agent.py:24: DeprecationWarning: the sha module is deprecated; use the hashlib module instead
import sha
/usr/lib64/cmf/agent/src/cmf/parcel.py:15: DeprecationWarning: the sets module is deprecated
from sets import Set
[17/Dec/2014 14:19:52 +0000] 9985 MainThread agent INFO SCM Agent Version: 5.2.1
[17/Dec/2014 14:19:52 +0000] 9985 MainThread agent ERROR Could not determine hostname or ip address; proceeding.
Traceback (most recent call last):
File "/usr/lib64/cmf/agent/src/cmf/agent.py", line 1854, in parse_arguments
ip_address = socket.gethostbyname(fqdn)
gaierror: [Errno -3] Temporary failure in name resolution
usage: agent.py [-h] [--agent_dir AGENT_DIR] [--lib_dir LIB_DIR]
[--agent_httpd_port AGENT_HTTPD_PORT] --package_dir
PACKAGE_DIR [--parcel_dir PARCEL_DIR]
[--supervisord_path SUPERVISORD_PATH]
[--supervisord_httpd_port SUPERVISORD_HTTPD_PORT]
[--standalone STANDALONE] [--master MASTER]
[--environment ENVIRONMENT] [--host_id HOST_ID]
[--disable_supervisord_events] --hostname HOSTNAME
--ip_address IP_ADDRESS [--use_tls]
[--client_key_file CLIENT_KEY_FILE]
[--client_cert_file CLIENT_CERT_FILE]
[--verify_cert_file VERIFY_CERT_FILE]
[--verify_cert_dir VERIFY_CERT_DIR]
[--client_keypw_file CLIENT_KEYPW_FILE]
[--max_cert_depth MAX_CERT_DEPTH] [--logfile LOGFILE]
[--logdir LOGDIR] [--optional_token] [--clear_agent_dir]
[--sudo_command SUDO_COMMAND]
agent.py: error: argument --hostname is required
[17/Dec/2014 14:19:52 +0000] 9985 Dummy-1 agent INFO Stopping agent...

[#3 · Accepted solution]

OK. I resolved the problem.

on hd3work the call to 

 python -c 'import socket; socket.gethostbyname(socket.getfqdn())

was failing.

I troubleshooted for a very long time and could not figure out why this problem is occuring.

so I deleted the network adapter of the VM and recreated the network adapter.

then suddenly it started to work.