devstack-openstack installation failing for keystone error

[Sushil Kumar]

When trying to create an openstack environment with redstack install, it fails giving error that keystone cannot be started.
Error log is as follows.
==========================================
'
Waiting for keystone to start...
+ echo 'Waiting for keystone to start...'
+ timeout 60 sh -c 'while ! http_proxy= curl -s http://10.6.139.101:5000/v2.0/ >/dev/null; do sleep 1; done'
+ die 316 'keystone did not start'
+ local exitcode=0
+ set +o xtrace
[Call Trace]
./stack.sh:880:start_keystone
/home/ubuntu/devstack/lib/keystone:316:die
[ERROR] /home/ubuntu/devstack/lib/keystone:316 keystone did not start

[Sushil Kumar (sushil-kumar2)]

working around with a temp hack
1. Edited devstack/lib/keystone to put values for update public_endpoint,cadmin_endpoint with relevant ports.
2. Add read and execute permissions for /usr/local/lib/python2.7/dist-packages/ and
    read permissions for /usr/lib/python2.7/dist-packages/