Comment 0 for bug 1537290

Shown the problem state setup to Thilak for debugging and looks it is possible zooker issue. Please find below,
Thilak using the setup for triaging,

root@a5d11e14:~#
root@a5d11e14:~# contrail-status
== Contrail Control ==
supervisor-control: active
contrail-control active
contrail-control-nodemgr active
contrail-dns active
contrail-named active

== Contrail Analytics ==
supervisor-analytics: active
contrail-alarm-gen initializing (Zookeeper:Zookeeper connection down)
contrail-analytics-api initializing (UvePartitions:UVE-Aggregation connection down)
contrail-analytics-nodemgr active
contrail-collector active
contrail-query-engine active
contrail-snmp-collector initializing (Zookeeper:Zookeeper connection down)
contrail-topology initializing (Zookeeper:Zookeeper connection down)

== Contrail Config ==
supervisor-config: active
contrail-api:0 initializing (Zookeeper:Zookeeper connection down)
contrail-config-nodemgr active
contrail-device-manager backup
contrail-discovery:0 active
contrail-schema backup
contrail-svc-monitor backup
ifmap active

== Contrail Web UI ==
supervisor-webui: active
contrail-webui active
contrail-webui-middleware active

== Contrail Database ==
contrail-database: active
supervisor-database: active
contrail-database-nodemgr active
kafka active

== Contrail Support Services ==
supervisor-support-service: active
rabbitmq-server active

root@a5d11e14:~#
root@a5d11e14:~#

root@a5d11e14:~# tail -f /var/log/zookeeper/zookeeper.log
2016-01-22 16:38:32,393 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.94:33841 (no session established for client)
2016-01-22 16:38:32,438 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.92:59965
2016-01-22 16:38:32,438 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,438 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.92:59965 (no session established for client)
2016-01-22 16:38:32,458 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.92:59968
2016-01-22 16:38:32,459 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,459 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.92:59968 (no session established for client)
2016-01-22 16:38:32,519 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.92:59980
2016-01-22 16:38:32,519 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,520 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.92:59980 (no session established for client)
2016-01-22 16:38:32,712 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.92:60002
2016-01-22 16:38:32,712 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,712 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.92:60002 (no session established for client)
2016-01-22 16:38:32,715 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.90:52779
2016-01-22 16:38:32,715 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,716 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.90:52779 (no session established for client)
2016-01-22 16:38:32,805 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.90:52795
2016-01-22 16:38:32,805 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,805 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.90:52795 (no session established for client)
2016-01-22 16:38:32,874 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.92:60049
2016-01-22 16:38:32,874 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,874 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.92:60049 (no session established for client)
2016-01-22 16:38:32,927 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.94:33900
2016-01-22 16:38:32,927 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,927 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.94:33900 (no session established for client)
2016-01-22 16:38:32,948 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.92:60058
2016-01-22 16:38:32,948 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,948 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection for client /10.87.143.92:60058 (no session established for client)
2016-01-22 16:38:32,985 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.87.143.92:60064
2016-01-22 16:38:32,985 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@354] - Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
2016-01-22 16:38:32,985 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1001] - Closed socket connection f

root@Blaster-nsarath-004:~# dpkg -l | grep contrail
ii contrail-server-manager 3.0-2697 all Contrail Server Manager - Server Package
ii contrail-server-manager-client 3.0-2697 all Contrail Server Manager - Client Package
ii contrail-server-manager-cliff-client 3.0-2697 all Contrail Server Manager Cliff Client Package
ii contrail-server-manager-installer 3.0-2697~juno all Contrail Server Manager Installer Packages - Wrapper Package for Server Manager and Related Debian Packages
ii contrail-server-manager-monitoring 3.0-2697 all Contrail Server-manager Monitoring API Library package
ii contrail-web-core 3.0-2697 amd64 Contrail Systems Web UI
ii contrail-web-server-manager 3.0-2697 amd64 Contrail Systems Web UI Server Manager Feature
ii nodejs 0.10.35-1contrail1 amd64 Node.js event-based server-side javascript engine
ii python-backports.ssl-match-hostname 3.4.0.2-1contrail1 all The ssl.match_hostname() function from Python 3.4
ii python-certifi 1.0.1-1contrail1 all Python SSL Certificates
ii python-consistent-hash 1.0-0contrail1 amd64 <insert up to 60 chars description>
ii python-contrail 3.0-2697 amd64 OpenContrail python-libs
ii python-geventhttpclient 1.1.0-1contrail1 amd64 http client library for gevent
ii python-kazoo 1.3.1-1contrail2 all higher level API to Apache Zookeeper (Python 2)
ii python-pycassa 1.11.0-1contrail2 all Client library for Apache Cassandra
ii python-xmltodict 0.9.0-1contrail1 all Makes working with XML feel like you are working with JSON
root@Blaster-nsarath-004:~#