Ogg18.1 remote capture要求mysql為5.7版本，只能從linux遠程捕獲mysql on windows or linux，且不支持DDL捕獲。支持遠程mysql為community/commerical版本。
源端數據庫配置
OGG登錄DB的用戶及密碼： ogg/Welcome!23
確保源庫有打開日志
修改my.cnf，打開日志存放路徑，並設置格式
[mysqld]
log-bin=/var/log/mysql/mysql-bin.log
確保運行mysql的用戶有權訪問這個目錄.
重啟mysqld之后，可以看到生成的日志
mysql中查看
mysql>show variables like 'log_%';
mysql> show master logs;
+------------------------+-----------+
| Log_name | File_size |
+------------------------+-----------+
| mysqlcs-mysql-1.000001 | 177 |
| mysqlcs-mysql-1.000002 | 7713925 |
+------------------------+-----------+
2 rows in set (0.00 sec)
查看日志內容
mysqlbinlog mysqlcs-mysql-1.000001
源DB准備
創建testdb並授權
create database testdb;
CREATE USER 'ogg'@'192.168.1.53' IDENTIFIED BY 'Welcome!23';
GRANT ALL PRIVILEGES ON *.* TO 'ogg'@'192.168.1.53' WITH GRANT OPTION;
FLUSH PRIVILEGES;
創建測試表
create table t1 (id int primary key, name varchar(50));
create table t2_tgt (id int primary key, name varchar(50));
create table t3 (id int, name varchar(50));
OGG抽取配置
遠程捕獲不支持DDL同步。
確認OGG能遠程連接到mysql
GGSCI > dblogin sourcedb testdb@192.168.1.52, userid ogg, password Welcome!23
Successfully logged into database.
GGSCI (DBLOGIN as root) 10>
Mgr.prm
Port 7809
ex1.prm
extract ex1
sourcedb testdb@192.168.1.52, userid ogg, password Welcome!23
TRANLOGOPTIONS ALTLOGDEST REMOTE
exttrail ./dirdat/ea
--ddl include mapped
table testdb.*;
GGSCI (DBLOGIN as root) 10> add ext ex1, tranlog, begin now
EXTRACT added.
GGSCI (DBLOGIN as root) 11> add exttrail ./dirdat/ea, ext ex1
EXTTRAIL added.
確認進程正常啟動
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING EX1 10:43:02 00:00:07
GGSCI (dbcs12c) 2> info ex1
EXTRACT EX1 Last Started 2018-11-05 21:25 Status RUNNING
Checkpoint Lag 10:43:02 (updated 00:00:09 ago)
Process ID 19857
VAM Read Checkpoint 2018-11-05 23:17:39.000000
Log Number: 2
Record Offset: 7713925
已經可以讀取日志
測試
Mysql插入數據
mysql> insert into testdb.t1 values(1,'bcs');
Query OK, 1 row affected (0.01 sec)
源DB上插入、更新、刪除記錄，抽取進程可正常捕獲：
GGSCI (dbcs12c) 3> stats ex1, total
Sending STATS request to EXTRACT EX1 ...
Start of Statistics at 2018-11-06 10:01:27.
Output to ./dirdat/ea:
Extracting from testdb.t1 to testdb.t1:
*** Total statistics since 2018-11-05 21:35:34 ***
Total inserts 2.00
Total updates 4.00
Total deletes 1.00
Total discards 0.00
Total operations 7.00
Extracting from testdb.t3 to testdb.t3:
*** Total statistics since 2018-11-05 21:35:34 ***
Total inserts 1.00
Total updates 2.00
Total deletes 0.00
Total discards 0.00
Total operations 3.00
End of Statistics.
查看隊列文件，已經有捕獲到新增數據
可以看到，通過遠程捕獲配置，goldengate仍然可以從mysql db中獲取增量數據。
通過以上的配置，可以在一台linux 節點上，安裝多個goldengate的介質，比如 OGG for oracle, ogg for mysql, ogg for bigdata等，從而實現類似HUB的機制，將數據的抽取和投遞集中在一個節點上進行管理，降低數據集中和數據復制的運維復雜性。