mysql error 1126_install plugin group_replication ERROR 1126 (HY000)

在给MySQL安装插件的时候，你可能会遇到如题所示的报错。

更详细的错误输出如下：

mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so';

ERROR1126(HY000):

mysql>mysql>

造成该问题的原因是，MySQL的配置文件指定的plugin_dir中，找不到你要安装的【*.so】文件。

比方说，在我的环境里是这样的：

[mysqld]

basedir=/usr/local/mysql/datadir=/data/mysql/3307/data/plugin-dir=/data/mysql/3307/plugin_data

port=3307socket=/tmp/mysql3307.sock

log-error =error.log

user=mysql

server_id=330798gtid_mode=on

enforce_gtid_consistency=on

master_info_repository=table

relay_log_info_repository=table

binlog_checksum=none

log_slave_updates=on

log_bin=mysql-bin

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= "172.16.1.98:33070"loose-group_replication_group_seeds= "172.16.1.88:33070,172.16.1.78:33070,172.16.1.98:33070"loose-group_replication_bootstrap_group= off

在我的场景中，对于MySQL的Group Replication来说，它的SO支持包可以在安装介质中找到，如下：

[root@zabbix-mysql-slave-98 plugin]# lsadt_null.so libtest_sql_errors.so

authentication_ldap_sasl_client.so libtest_sql_lock.so

auth_socket.so libtest_sql_processlist.so

connection_control.so libtest_sql_replication.so

debug libtest_sql_shutdown.so

group_replication.so libtest_sql_sqlmode.so

ha_example.so libtest_sql_stored_procedures_functions.so

innodb_engine.so libtest_sql_views_triggers.so

keyring_file.so libtest_x_sessions_deinit.so

keyring_udf.so libtest_x_sessions_init.so

libmemcached.so locking_service.so

libpluginmecab.so mypluglib.so

libtest_framework.so mysql_no_login.so

libtest_services.so mysqlx.so

libtest_services_threaded.so rewrite_example.so

libtest_session_detach.so rewriter.so

libtest_session_info.so semisync_master.so

libtest_session_in_thd.so semisync_slave.so

libtest_sql_2_sessions.so test_security_context.so

libtest_sql_all_col_types.so test_udf_services.so

libtest_sql_cmds_1.so validate_password.so

libtest_sql_commit.so version_token.so

libtest_sql_complex.so

解决问题：

将它移动到配置文件中声明的plugin目录：

[root@mysql-node-1 ~]# cp /software/mysql/mysql-5.7.17-linux-glibc2.5-x86_64/lib/plugin/group_replication.so /data/mysql/plugin_data/[root@mysql-node-1 ~]#

[root@mysql-node-1 ~]# ls -ltr /data/mysql/plugin_data/total15912

-rwxr-xr-x 1 root root 16290927 Mar 4 10:02group_replication.so

[root@mysql-node-1 ~]#

再次执行【INSTALL PLUGIN】就没问题了：

[root@mysql-node-1 ~]# mysql -uroot -h127.0.0.1 -P3306 -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connectionid is 8Server version:5.7.17-log MySQL Community Server (GPL)

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 clearthe current input statement.

mysql>show plugins;+----------------------------+----------+--------------------+---------+---------+

+----------------------------+----------+--------------------+---------+---------+

+----------------------------+----------+--------------------+---------+---------+

44 rows in set (0.00sec)

mysql>mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so';

Query OK,0 rows affected (0.02sec)

mysql>mysql>show plugins;+----------------------------+----------+--------------------+----------------------+---------+

+----------------------------+----------+--------------------+----------------------+---------+

+----------------------------+----------+--------------------+----------------------+---------+

45 rows in set (0.00sec)

mysql>exit

Bye

——————————————————————

Done。

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