Comment 18 for bug 1367767

still reproduced on new MOS ISO 433
{"build_id": "2015-05-18_10-14-06", "build_number": "433", "release_versions": {"2014.2.2-6.1": {"VERSION": {"build_id": "2015-05-18_10-14-06", "build_number": "433", "api": "1.0", "fuel-library_sha": "354d593865f997dffb52717968dc0ce19cb9254c", "nailgun_sha": "fac8f1af6bd3eb46fe2a26689b0d85f358934f7a", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "38765563e1a7f14f45201fd47cf507393ff5d673", "astute_sha": "85af5543460ffc1a48ea87b6be60789e6d710454", "fuel-ostf_sha": "9ce1800749081780b8b2a4a7eab6586583ffaf33", "release": "6.1", "fuelmain_sha": "0e970647a83d9a7d336c4cc253606d4dd0d59a60"}}}, "auth_required": true, "api": "1.0", "fuel-library_sha": "354d593865f997dffb52717968dc0ce19cb9254c", "nailgun_sha": "fac8f1af6bd3eb46fe2a26689b0d85f358934f7a", "feature_groups": ["mirantis"], "openstack_version": "2014.2.2-6.1", "production": "docker", "python-fuelclient_sha": "38765563e1a7f14f45201fd47cf507393ff5d673", "astute_sha": "85af5543460ffc1a48ea87b6be60789e6d710454", "fuel-ostf_sha": "9ce1800749081780b8b2a4a7eab6586583ffaf33", "release": "6.1", "fuelmain_sha": "0e970647a83d9a7d336c4cc253606d4dd0d59a60"}

Steps:
1. Deploy Env (HA, Ubuntu, 3 - controllers, 2 - Compute+Cinder, Neutron VLAN)
2. Shutdown some controller (or just block traffic to memcached that is running on it - `iptables -I INPUT -p tcp --dport 11211 -j DROP`)

Actual result:
I see delays in Horizon operations

If we go to controller via ssh and open /etc/openstack-dashboard/local_settings.py, we can see default value:
CACHES = {
    'default': {
# 'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': [ '192.168.0.4:11211','192.168.0.5:11211','192.168.0.6:11211', ],
    }
}

This commit https://git.openstack.org/cgit/stackforge/fuel-library/commit/?id=0787170f7ac62c85d833866a4d9176402d7d4371
and Review https://review.openstack.org/183208 doesn't change local_settings.py as here
https://review.fuel-infra.org/#/c/6148/9/doc/source/topics/deployment.rst