Verified on ISO #92

"build_id": "2015-02-01_22-55-01", "ostf_sha": "c9100263140008abfcc2704732e98fbdfd644068", "build_number": "92", "release_versions": {"2014.2-6.1": {"VERSION": {"build_id": "2015-02-01_22-55-01", "ostf_sha": "c9100263140008abfcc2704732e98fbdfd644068", "build_number": "92", "api": "1.0", "nailgun_sha": "c0932eb5c2aa7fd1e13a999cb1b4bf5aff101c3b", "production": "docker", "python-fuelclient_sha": "2ea7b3e91c1d2ff85110bf5abb161a6f4e537358", "astute_sha": "ed5270bf9c6c1234797e00bd7d4dd3213253a413", "feature_groups": ["mirantis"], "release": "6.1", "fuelmain_sha": "", "fuellib_sha": "c5e4a0410ba66f9e9911f62b3b71c0b9c29aed6e"}}}, "auth_required": true, "api": "1.0", "nailgun_sha": "c0932eb5c2aa7fd1e13a999cb1b4bf5aff101c3b", "production": "docker", "python-fuelclient_sha": "2ea7b3e91c1d2ff85110bf5abb161a6f4e537358", "astute_sha": "ed5270bf9c6c1234797e00bd7d4dd3213253a413", "feature_groups": ["mirantis"], "release": "6.1", "fuelmain_sha": "", "fuellib_sha": "c5e4a0410ba66f9e9911f62b3b71c0b9c29aed6e"

1. Kill rabbitmq on one of controllers
2. Wait until rabbitmq restart
3. 
[root@node-6 ~]# ps aux | grep rabbit
root      5759  0.0  0.0  11300   940 ?        S    10:22   0:00 /bin/sh /usr/sbin/rabbitmq-server
root      5775  0.0  0.0  48572  1176 ?        S    10:22   0:00 su rabbitmq -s /bin/sh -c /usr/lib/rabbitmq/bin/rabbitmq-server 
rabbitmq  5776 11.8  3.6 1165476 108084 ?      Ssl  10:22   0:16 /usr/lib64/erlang/erts-5.8.5/bin/beam.smp -W w -K true -A30 -P 1048576 -- -root /usr/lib64/erlang -progname erl -- -home /var/lib/rabbitmq -- -pa /usr/lib/rabbitmq/lib/rabbitmq_server-3.3.5/sbin/../ebin -noshell -noinput -sname rabbit@node-6 -boot start_sasl -config /etc/rabbitmq/rabbitmq -rabbit tcp_listeners [{"auto",5673}] -sasl errlog_type error -sasl sasl_error_logger false -rabbit error_logger {file,"/<email address hidden>"} -rabbit sasl_error_logger {file,"/<email address hidden>"} -rabbit enabled_plugins_file "/etc/rabbitmq/enabled_plugins" -rabbit plugins_dir "/usr/lib/rabbitmq/lib/rabbitmq_server-3.3.5/sbin/../plugins" -rabbit plugins_expand_dir "/var/lib/rabbitmq/mnesia/rabbit@node-6-plugins-expand" -os_mon start_cpu_sup false -os_mon start_disksup false -os_mon start_memsup false -mnesia dir "/var/lib/rabbitmq/mnesia/rabbit@node-6"
rabbitmq  6057  0.0  0.0  10792   532 ?        Ss   10:22   0:00 inet_gethost 4
rabbitmq  6060  0.0  0.0  12896   672 ?        S    10:22   0:00 inet_gethost 4
root     12623  0.0  0.0 103248   884 pts/0    S+   10:24   0:00 grep rabbit

4. See limits for needed processes

[root@node-6 ~]# cat /proc/5759/limits 
Limit                     Soft Limit           Hard Limit           Units     
Max cpu time              unlimited            unlimited            seconds   
Max file size             unlimited            unlimited            bytes     
Max data size             unlimited            unlimited            bytes     
Max stack size            10485760             unlimited            bytes     
Max core file size        unlimited            unlimited            bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             22930                22930                processes 
Max open files            102400               105472               files     
Max locked memory         unlimited            unlimited            bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       22930                22930                signals   
Max msgqueue size         819200               819200               bytes     
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us        
[root@node-6 ~]# cat /proc/5775/limits 
Limit                     Soft Limit           Hard Limit           Units     
Max cpu time              unlimited            unlimited            seconds   
Max file size             unlimited            unlimited            bytes     
Max data size             unlimited            unlimited            bytes     
Max stack size            10485760             unlimited            bytes     
Max core file size        unlimited            unlimited            bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             10240                22930                processes 
Max open files            102400               112640               files     
Max locked memory         unlimited            unlimited            bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       22930                22930                signals   
Max msgqueue size         819200               819200               bytes     
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us