Hi,

I have created 2 node cluster and use with application. My application unable to connect with database. Please find below logs;

NoConnectionAvailable at /

ConnectionPool limit of size 2 overflow 2 reached, unable to obtain connection after 30 seconds
Request Method: GET
Request URL: http://172.16.100.131/
Django Version: 1.4
Exception Type: NoConnectionAvailable
Exception Value:
ConnectionPool limit of size 2 overflow 2 reached, unable to obtain connection after 30 seconds
Exception Location: /usr/local/lib/python2.6/site-packages/pycassa-1.0.8-py2.6.egg/pycassa/pool.py in get, line 738
Python Executable: /usr/local/bin/python
Python Version: 2.6.4
Python Path:
['/var/www/bs_ping',
 '/usr/local/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/amqplib-0.6.1-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/BeautifulSoup-3.1.0.1-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/python_dateutil-1.4.1-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/feedparser-4.1-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/python_twitter-0.6-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/simplejson-2.0.9-py2.6-linux-i686.egg',
 '/usr/local/lib/python2.6/site-packages/txAMQP-0.3-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-i686.egg',
 '/usr/local/lib/python2.6/site-packages/zope.interface-3.5.2-py2.6-linux-i686.egg',
 '/usr/local/lib/python2.6/site-packages/UnicodeUtils-0.3.2-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/pytz-2009p-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/ScriptUtils-0.5.5-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/MySQL_python-1.2.3c1-py2.6-linux-i686.egg',
 '/usr/local/lib/python2.6/site-packages/python_memcached-1.44-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/coverage-3.2b1-py2.6-linux-i686.egg',
 '/usr/local/lib/python2.6/site-packages/flup-1.0.3.dev_20091027-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/oauth-1.0.1-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/pyOpenSSL-0.10-py2.6-linux-i686.egg',
 '/usr/local/lib/python2.6/site-packages/pycassa-1.0.8-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/wadofstuff_django_serializers-1.1.0-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/jsonpickle-0.4.0-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/django_compressor-1.1.2-py2.6.egg',
 '/usr/local/lib/python2.6/site-packages/django_appconf-0.5-py2.6.egg',
 '/usr/local/lib/python26.zip',
 '/usr/local/lib/python2.6',
 '/usr/local/lib/python2.6/plat-linux2',
 '/usr/local/lib/python2.6/lib-tk',
 '/usr/local/lib/python2.6/lib-old',
 '/usr/local/lib/python2.6/lib-dynload',
 '/usr/local/lib/python2.6/site-packages',
 '/usr/local/lib/python2.6/site-packages/PIL',
 '/var/www/bs_ping/',
 '/var/www']
Server time: Wed, 25 Jul 2012 13:17:33 +0500

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Thanks & Regards

Adeel Akbar