Description:
Kubernetes&&MGR Executing "start group_replication" fails and error log shows:
2018-07-16T08:26:52.317000Z 81 [Note] Plugin group_replication reported: 'Group communication SSL configuration: group_replication_ssl_mode: "DISABLED"'
2018-07-16T08:26:52.317184Z 81 [Note] Plugin group_replication reported: '[GCS] Added automatically IP ranges 127.0.0.1/8,172.30.75.72/32 to the whitelist'
2018-07-16T08:26:52.320163Z 81 [Note] Plugin group_replication reported: '[GCS] Translated 'mysql1' to 10.254.119.157'
2018-07-16T08:26:52.320237Z 81 [ERROR] Plugin group_replication reported: '[GCS] There is no local IP address matching the one configured for the local node (mysql1:24901).'
How to repeat:
I have use kubernetes & MySQL Group Replication.
Docker MySQL image version:
mysql:5.7.22
kubernetes version:
[root@k8s-ceph-master-57-89 mgr]# rpm -qa |grep kubelet
kubelet-1.9.0-0.x86_64
[root@k8s-ceph-master-57-89 mgr]# kubectl -n wxj get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE
mysql1-6756857c67-mzddj 1/1 Running 0 50m 172.30.75.72 k8s-ceph-node-130-141
mysql2-55cd4589cf-qxhzt 1/1 Running 0 1h 172.30.6.8 k8s-ceph-node-15-103
mysql3-59df464ff5-dnmwl 1/1 Running 0 1h 172.30.253.199 k8s-ceph-node-148-186
[root@k8s-ceph-master-57-89 mgr]# kubectl -n wxj get services -o wide
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
mysql1 ClusterIP 10.254.119.157 <none> 3306/TCP,24901/TCP 51m app=mysql1
mysql2 ClusterIP 10.254.233.35 <none> 3306/TCP,24901/TCP 51m app=mysql2
mysql3 ClusterIP 10.254.99.70 <none> 3306/TCP,24901/TCP 51m app=mysql3
Relevant my.cnf :(mysql1,mysql2,mysql3 is kubernetes service name)
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= "mysql1:24901"
loose-group_replication_group_seeds= "mysql1:24901,mysql2:24901,mysql3:24901"
loose-group_replication_bootstrap_group= off
In pod mysql1-6756857c67-mzddj,I can use service name connect mysql:
root@mysql1-6756857c67-mzddj:/# mysql -h mysql1 -uroot -pyijiupi -P 3306
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 331
Server version: 5.7.22-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
root@mysql1-6756857c67-mzddj:/# mysql -h mysql2 -uroot -pyijiupi -P 3306
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 698
Server version: 5.7.22-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select @@hostname;
+-------------------------+
| @@hostname |
+-------------------------+
| mysql2-55cd4589cf-qxhzt |
+-------------------------+
What advice do you have to help me solve this problem? Thinks.
Suggested fix:
I can use Kubernetes services name connection MySQL server,but can't use service name
initialize MySQL group_replication.
