Mysql5.7.17 group replication add second server failed (2 replies)

When I start the first server(ip:172.27.19.233) to create a new group, it's all ok.
But when I add the second server(ip:10.130.10.192) to join the group, it turn out that the second server will seize then master's position, and the first server's state turn to OFFLINE.

Here is the second's log and state:

2016-12-26T06:40:11.712220Z 0 [Note] Plugin group_replication reported: 'state 0 action xa_init'
2016-12-26T06:40:11.734264Z 0 [Note] Plugin group_replication reported: 'Successfully bound to 0.0.0.0:24901 (socket=49).'
2016-12-26T06:40:11.734308Z 0 [Note] Plugin group_replication reported: 'Successfully set listen backlog to 32 (socket=49)!'
2016-12-26T06:40:11.734316Z 0 [Note] Plugin group_replication reported: 'Successfully unblocked socket (socket=49)!'
2016-12-26T06:40:11.734355Z 0 [Note] Plugin group_replication reported: 'Ready to accept incoming connections on 0.0.0.0:24901 (socket=49)!'
2016-12-26T06:40:11.734372Z 0 [Note] Plugin group_replication reported: 'connecting to 10.130.10.192 24901'
2016-12-26T06:40:11.734516Z 0 [Note] Plugin group_replication reported: 'client connected to 10.130.10.192 24901 fd 50'
2016-12-26T06:40:11.735224Z 0 [Note] Plugin group_replication reported: 'connecting to 10.130.10.192 24901'
2016-12-26T06:40:11.735334Z 0 [Note] Plugin group_replication reported: 'client connected to 10.130.10.192 24901 fd 66'
2016-12-26T06:40:11.735890Z 0 [Note] Plugin group_replication reported: 'connecting to 10.130.10.192 24901'
2016-12-26T06:40:11.735984Z 0 [Note] Plugin group_replication reported: 'client connected to 10.130.10.192 24901 fd 68'
2016-12-26T06:40:11.736138Z 0 [Note] Plugin group_replication reported: 'connecting to 10.130.10.192 24901'
2016-12-26T06:40:11.736226Z 0 [Note] Plugin group_replication reported: 'client connected to 10.130.10.192 24901 fd 70'
2016-12-26T06:40:11.736381Z 0 [Note] Plugin group_replication reported: 'connecting to 10.130.10.192 24901'
2016-12-26T06:40:11.736466Z 0 [Note] Plugin group_replication reported: 'client connected to 10.130.10.192 24901 fd 72'
2016-12-26T06:40:11.736582Z 0 [Note] Plugin group_replication reported: 'connecting to 10.130.10.192 24901'
2016-12-26T06:40:11.736678Z 0 [Note] Plugin group_replication reported: 'client connected to 10.130.10.192 24901 fd 74'
2016-12-26T06:40:11.736793Z 0 [Note] Plugin group_replication reported: 'connecting to 172.27.19.233 24901'
2016-12-26T06:40:11.737004Z 0 [Note] Plugin group_replication reported: 'client connected to 172.27.19.233 24901 fd 76'
2016-12-26T06:40:13.036560Z 0 [Note] Plugin group_replication reported: 'state 4257 action xa_snapshot'
2016-12-26T06:40:13.036757Z 0 [Note] Plugin group_replication reported: 'new state x_recover'
2016-12-26T06:40:13.036771Z 0 [Note] Plugin group_replication reported: 'state 4277 action xa_complete'
2016-12-26T06:40:13.036901Z 0 [Note] Plugin group_replication reported: 'new state x_run'
2016-12-26T06:40:14.040952Z 0 [Note] Plugin group_replication reported: 'getstart group_id 4317e324'
2016-12-26T06:40:14.958794Z 0 [Note] Plugin group_replication reported: 'Starting group replication recovery with view_id 14827338559155649:2'
2016-12-26T06:40:14.959139Z 12 [Note] Plugin group_replication reported: 'Only one server alive. Declaring this server as online within the replication group'
2016-12-26T06:40:14.960508Z 0 [Note] Plugin group_replication reported: 'This server was declared online within the replication group'


mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| group_replication_applier | 04f4c329-cb2f-11e6-b304-e41f1345523a | qsitil6 | 3306 | ONLINE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
1 row in set (0.00 sec)



And here is the first server's log and state:

2016-12-26T06:40:14.039546Z 0 [Note] Plugin group_replication reported: 'getstart group_id 4317e324'
2016-12-26T06:40:14.957262Z 0 [Note] Plugin group_replication reported: 'Marking group replication view change with view_id 14827338559155649:2'
2016-12-26T06:40:14.959046Z 0 [Note] Plugin group_replication reported: 'This server was not declared online since it is on status OFFLINE'


mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| group_replication_applier | 04f4c329-cb2f-11e6-b304-e41f1345523a | qsitil5 | 3306 | OFFLINE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
1 row in set (0.00 sec)