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CDH 5.7 installation stuck at Activation

New Contributor

I'm trying to install CDH in a two node cluster using




But it's stuck at activation for one of them.



When I checked /var/log/cloudera-scm-agent.log, I see this:

URLError: <urlopen error [Errno -2] Name or service not known>
[19/Jul/2016 10:29:40 +0000] 4276 Thread-13 downloader ERROR Failed fetching torrent: <urlopen error [Errno -2] Name or service not known>
Traceback (most recent call last):
File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.7.1-py2.7.egg/cmf/", line 263, in download
cmf.https.ssl_url_opener.fetch_to_file(torrent_url, torrent_file)
File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.7.1-py2.7.egg/cmf/", line 176, in fetch_to_file
resp =
File "/usr/lib/cmf/agent/build/env/lib/python2.7/site-packages/cmf-5.7.1-py2.7.egg/cmf/", line 171, in open
return self.opener(*pargs, **kwargs)
File "/usr/lib/python2.7/", line 127, in urlopen
return, data, timeout)
File "/usr/lib/python2.7/", line 404, in open
response = self._open(req, data)
File "/usr/lib/python2.7/", line 422, in _open
'_open', req)
File "/usr/lib/python2.7/", line 382, in _call_chain
result = func(*args)
File "/usr/lib/python2.7/", line 1214, in http_open
return self.do_open(httplib.HTTPConnection, req)
File "/usr/lib/python2.7/", line 1184, in do_open
raise URLError(err)
URLError: <urlopen error [Errno -2] Name or service not known>



I chose all the defaults while installing using Cloudera Manager. How can I fix this? Thanks in advance.

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