Hou Xiaokun created MESOS-2284:
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             Summary: Slave cannot be registered while masters keep switching 
to another one.
                 Key: MESOS-2284
                 URL: https://issues.apache.org/jira/browse/MESOS-2284
             Project: Mesos
          Issue Type: Bug
          Components: documentation
    Affects Versions: 0.20.1
         Environment: Ubuntu14.04
            Reporter: Hou Xiaokun
            Priority: Blocker


I followed the instruction in page 
http://mesosphere.com/docs/getting-started/datacenter/install/.
Setup two masters and one slave. And quorum value is "2". Configured ip 
addresses in hostname files separately.
Here is the log from slave node,
I0127 22:37:26.762953  1966 slave.cpp:627] No credentials provided. Attempting 
to register without authentication
I0127 22:37:26.762985  1966 slave.cpp:638] Detecting new master
I0127 22:37:26.763022  1966 status_update_manager.cpp:171] Pausing sending 
status updates
I0127 22:38:06.683840  1962 slave.cpp:3321] Current usage 16.98%. Max allowed 
age: 5.111732713224155days
I0127 22:38:26.986556  1966 slave.cpp:2623] [email protected]:5050 exited
W0127 22:38:26.986675  1966 slave.cpp:2626] Master disconnected! Waiting for a 
new master to be elected
I0127 22:38:34.909605  1963 detector.cpp:138] Detected a new leader: (id='2028')
I0127 22:38:34.909811  1963 group.cpp:659] Trying to get 
'/mesos/info_0000002028' in ZooKeeper
I0127 22:38:34.910909  1963 detector.cpp:433] A new leading master 
([email protected]:5050) is detected
I0127 22:38:34.910989  1963 slave.cpp:602] New master detected at 
[email protected]:5050
I0127 22:38:34.911113  1963 slave.cpp:627] No credentials provided. Attempting 
to register without authentication
I0127 22:38:34.911144  1963 slave.cpp:638] Detecting new master
I0127 22:38:34.911183  1963 status_update_manager.cpp:171] Pausing sending 
status updates
I0127 22:39:06.684526  1964 slave.cpp:3321] Current usage 16.98%. Max allowed 
age: 5.111731773610567days
I0127 22:39:35.231653  1963 slave.cpp:2623] [email protected]:5050 exited
W0127 22:39:35.231869  1963 slave.cpp:2626] Master disconnected! Waiting for a 
new master to be elected
I0127 22:39:42.761540  1964 detector.cpp:138] Detected a new leader: (id='2029')
I0127 22:39:42.761732  1964 group.cpp:659] Trying to get 
'/mesos/info_0000002029' in ZooKeeper
I0127 22:39:42.762914  1964 detector.cpp:433] A new leading master 
([email protected]:5050) is detected
I0127 22:39:42.762984  1964 slave.cpp:602] New master detected at 
[email protected]:5050
I0127 22:39:42.763089  1964 slave.cpp:627] No credentials provided. Attempting 
to register without authentication
I0127 22:39:42.763118  1964 slave.cpp:638] Detecting new master
I0127 22:39:42.763155  1964 status_update_manager.cpp:171] Pausing sending 
status updates




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