mysql5.7.17的group replication是不是目前不靠谱, 按照官方文档搞了几天都不成功

我是三台主机的, iptables, selinux ,ipv6全关, 第一个节点成功启动了并且加入group, 但是第二个节点死活加入不了group, 网上目前有几篇操作手册, 跟官方都差不多, 应该有人成功过, 不知道自己哪里做的不对

安装官方第二个节点, 在安装完插件后, 只需启动group replication即可

START GROUP_REPLICATION;

第二个节点错误日志如下:

2017-01-16T18:09:03.578252Z 0 [Note] Plugin group_replication reported: 'client connected to localhost 33062 fd 69'
2017-01-16T18:09:03.578427Z 0 [Note] Plugin group_replication reported: 'connecting to localhost 33062'
2017-01-16T18:09:03.578800Z 0 [Note] Plugin group_replication reported: 'client connected to localhost 33062 fd 72'
2017-01-16T18:09:03.578977Z 0 [Note] Plugin group_replication reported: 'connecting to localhost 33062'
2017-01-16T18:09:03.579081Z 0 [Note] Plugin group_replication reported: 'client connected to localhost 33062 fd 74'
2017-01-16T18:09:03.579236Z 0 [Note] Plugin group_replication reported: 'connecting to postgressql1.novalocal 33061'
2017-01-16T18:09:03.580815Z 0 [Note] Plugin group_replication reported: 'client connected to postgressql1.novalocal 33061 fd 76'
2017-01-16T18:09:33.581699Z 0 [ERROR] Plugin group_replication reported: '[GCS] Timeout while waiting for the group communication engine to be ready!'
2017-01-16T18:09:33.581774Z 0 [ERROR] Plugin group_replication reported: '[GCS] The group communication engine is not ready for the member to join. Local port: 33062'
2017-01-16T18:09:33.581955Z 0 [Note] Plugin group_replication reported: 'state 4257 action xa_terminate'
2017-01-16T18:09:33.582007Z 0 [Note] Plugin group_replication reported: 'new state x_start'
2017-01-16T18:09:33.582020Z 0 [Note] Plugin group_replication reported: 'state 4257 action xa_exit'
2017-01-16T18:09:33.582278Z 0 [Note] Plugin group_replication reported: 'Exiting xcom thread'
2017-01-16T18:09:33.582291Z 0 [Note] Plugin group_replication reported: 'new state x_start'
2017-01-16T18:09:33.582349Z 0 [Warning] Plugin group_replication reported: 'read failed'
2017-01-16T18:09:33.596918Z 0 [ERROR] Plugin group_replication reported: '[GCS] The member was unable to join the group. Local port: 33062'
2017-01-16T18:10:03.553584Z 4 [ERROR] Plugin group_replication reported: 'Timeout on wait for view after joining group'
2017-01-16T18:10:03.553730Z 4 [Note] Plugin group_replication reported: 'Requesting to leave the group despite of not being a member'
2017-01-16T18:10:03.554294Z 4 [ERROR] Plugin group_replication reported: '[GCS] The member is leaving a group without being on one.'
2017-01-16T18:10:03.554485Z 4 [Note] Plugin group_replication reported: 'auto_increment_increment is reset to 1'
2017-01-16T18:10:03.554514Z 4 [Note] Plugin group_replication reported: 'auto_increment_offset is reset to 1'
2017-01-16T18:10:03.555996Z 9 [Note] Error reading relay log event for channel 'group_replication_applier': slave SQL thread was killed
2017-01-16T18:10:03.610642Z 6 [Note] Plugin group_replication reported: 'The group replication applier thread was killed'"

my.cnf如下:

[mysqld]

user=mysql
basedir=/usr/local/mysql
datadir=/data/mysql

port=3306
socket=/tmp/mysql.sock
character-set-server=utf8
explicit_defaults_for_timestamp


server_id=2
gtid_mode=ON
enforce_gtid_consistency=ON
master_info_repository=TABLE
relay_log_info_repository=TABLE
binlog_checksum=NONE
log_slave_updates=ON
log_bin=binlog
binlog_format=ROW

transaction_write_set_extraction=XXHASH64
loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
loose-group_replication_start_on_boot=off
loose-group_replication_local_address="localhost:33062"
loose-group_replication_group_seeds="postgressql1.novalocal:33061,localhost:33062,postgressql3.novalocal:33063"
loose-group_replication_bootstrap_group= off