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OGG有传统的经典架构，也有最新的微服务，2个都可以远程捕获和应用数据，对数据库服务器是0侵入，而传统的经典架构是纯命令行模式，最新的微服务架构是图形化界面操作，几乎所有操作都可以在界面进行。相关文章可以参考：
- 使用OGG for MySQL微服务快速双向同步RDS数据库：https://www.xmmup.com/shiyongoggweifuwukuaisushuangxiangtongburdsshujuku.html
- OGG用于跨云RDS for MySQL之间配置双主实时同步–OGG远程捕获和投递：https://www.xmmup.com/oggyongyukuayunrdszhijianpeizhishuangzhushishitongbuyuanchengbuhuohetoudi.html
- otter用于跨云RDS for mysql之间配置双主实时同步：https://www.xmmup.com/otteryongyukuayunrdszhijianpeizhishuangzhushishitongbu.html
- OGG用于PG数据库之间双主实时同步（RDS for PG亦可）–OGG远程捕获和投递：https://www.xmmup.com/oggyongyupgshujukuzhijianshuangzhushishitongburds-for-pgyikeoggyuanchengbuhuohetoudi.html
使用OGG for PG微服务
-- 创建专用网络
docker network create --subnet=172.72.6.0/24 pg-network
-- OGG微服务
docker pull lhrbest/ogg213mapg:v1.0
docker rm -f lhrogg213mapg
docker run -d --name lhrogg213mapg -h lhrogg213mapg \
--net=pg-network --ip 172.72.6.25 \
-p 9390:3389 -p 19000-19005:9000-9005 \
-v /sys/fs/cgroup:/sys/fs/cgroup \
--privileged=true lhrbest/ogg213mapg:v1.0 \
/usr/sbin/init
-- PG A
docker rm -f lhrpga
docker run -d --name lhrpga -h lhrpga \
-p 64320:5432 --net=pg-network --ip 172.72.6.20 \
-e POSTGRES_PASSWORD=lhr \
-e TZ=Asia/Shanghai \
postgres:13.4
-- PG B
docker rm -f lhrpgb
docker run -d --name lhrpgb -h lhrpgb \
-p 64321:5432 --net=pg-network --ip 172.72.6.21 \
-e POSTGRES_PASSWORD=lhr \
-e TZ=Asia/Shanghai \
postgres:13.4
-- 2个PG库需要配置
psql -U postgres -h 192.168.66.35 -p 64320
psql -U postgres -h 192.168.66.35 -p 64321
alter system set wal_level='logical';
alter system set max_replication_slots = 10 ;
create database lhrdb;
\c lhrdb
create schema ogg;
docker restart lhrpga lhrpgb
-- OGGMA
cat > /ogg213c/ogg_ma/odbc.ini <<"EOF"
[ODBC Data Sources]
PGDSN1=DataDirect 13 PostgreSQL Wire Protocol
PGDSN2=DataDirect 13 PostgreSQL Wire Protocol
[ODBC]
IANAAppCodePage=106
InstallDir=/ogg213c/ogg_ma
[PGDSN1]
Driver=/ogg213c/ogg_ma/lib/GGpsql25.so
#Driver=/usr/lib64/psqlodbcw.so
Description=DataDirect 13 PostgreSQL Wire Protocol
Database=lhrdb
HostName=172.72.6.20
PortNumber=5432
LogonID=postgres
Password=lhr
[PGDSN2]
Driver=/ogg213c/ogg_ma/lib/GGpsql25.so
#Driver=/usr/lib64/psqlodbcw.so
Description=DataDirect 13 PostgreSQL Wire Protocol
Database=lhrdb
HostName=172.72.6.21
PortNumber=5432
LogonID=postgres
Password=lhr
EOF
访问：http://192.168.66.35:19000 ，用户名：oggadmin，密码：lhr
创建身份证明
或直接访问：http://192.168.66.35:19001/
创建检查点表
由于我们要配置双主，所以，这里的PG1和PG2都需要配置检查点表，否则只在目标端配置检查点表即可。
数据初始化
首先将PGA和PGB的lhrdb库的数据初始化.
-- pga建表并插入数据
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/pgsql/lib
sysbench /usr/share/sysbench/oltp_common.lua --db-driver=pgsql \
--pgsql-host=172.72.6.20 --pgsql-port=5432 \
--pgsql-user=postgres --pgsql-password=lhr --pgsql-db=lhrdb \
--table-size=10000 --tables=10 --threads=80 \
--events=999999999 --time=60 prepare
-- pgb只是建表，注意：table-size
sysbench /usr/share/sysbench/oltp_common.lua --db-driver=pgsql \
--pgsql-host=172.72.6.21 --pgsql-port=5432 \
--pgsql-user=postgres --pgsql-password=lhr --pgsql-db=lhrdb \
--table-size=0 --tables=10 --threads=80 \
--events=999999999 --time=60 prepare
当然，我们可以不使用OGG进行数据的初始化，也可以使用数据库本身的工具进行初始化，例如：
pg_dump -d lhrdb > lhrdb.dmp
psql -U postgres -d lhrdb -h 172.72.6.21 < lhrdb.dmp
这里演示从OGG进行数据的初始化。
添加表的TRANDATA 信息
image-20211202221059559
2个库的public下的表都需要添加。
从PGA配置初始提取
参数内容：
EXTRACT ext0
SETENV(PGCLIENTENCODING = "UTF8")
SETENV(ODBCINI="/ogg213c/ogg_ma/odbc.ini")
SOURCEDB PGDSN1 USERIDALIAS PG1, DOMAIN OGGMA
EXTFILE ./dirdat/e0 , PURGE
TABLE public.*;
数据已经导出到本地。
将数据导入到PGB
image-20211202155600306
image-20211202160022049
参数：
REPLICAT rep0
SETENV(PGCLIENTENCODING = "UTF8" )
SETENV(ODBCINI="/ogg213c/ogg_ma/odbc.ini")
TARGETDB PGDSN2 USERIDALIAS PG2, DOMAIN OGGMA
MAP public.*, TARGET public.*;
image-20211202160303356
可以看到，数据都已经抽取到目标端了。
配置复制槽
在配置PostgreSQL实时同步之前，需要先配置复制槽。
C:\Users\lhrxxt>adminclient
Oracle GoldenGate Administration Client for Oracle
Version 21.3.0.0.1 OGGCORE_21.3.0.0.1_PLATFORMS_211007.1817
Copyright (C) 1995, 2021, Oracle and/or its affiliates. All rights reserved.
Windows x64 (optimized) on Oct 7 2021 21:05:36
Operating system character set identified as GBK.
OGG (not connected) 1> CONNECT http://192.168.66.35:19001 deployment deploy213 as oggadmin password lhr
OGG (http://192.168.66.35:19001 deploy213) 2> dblogin useridalias PG1 DOMAIN OGGMA
Successfully logged into database.
OGG (http://192.168.66.35:19001 deploy213 as PG1@lhrdb) 3> REGISTER EXTRACT ext1
2021-12-02T14:22:17Z INFO OGG-25355 Successfully created replication slot 'ext1_eaa1c3d574a94c47' for Extract group 'EXT1' in database 'lhrdb'.
OGG (http://192.168.66.35:19001 deploy213 as PG1@lhrdb) 4> dblogin useridalias PG2 DOMAIN OGGMA
Successfully logged into database.
OGG (http://192.168.66.35:19001 deploy213 as PG2@lhrdb) 6> REGISTER EXTRACT ext2
2021-12-02T14:23:36Z INFO OGG-25355 Successfully created replication slot 'ext2_5521571981698d81' for Extract group 'EXT2' in database 'lhrdb'.
OGG (http://192.168.66.35:19001 deploy213 as PG2@lhrdb) 7> info all
Program Status Group Type Lag at Chkpt Time Since Chkpt
REPLICAT RUNNING REP0 NONINTEGRATED 00:00:00 00:00:06
OGG (http://192.168.66.35:19001 deploy213 as PG2@lhrdb) 8> CONNECT http://192.168.66.35:19000 deployment deploy213 as oggadmin password lhr
OGG (http://192.168.66.35:19000 deploy213) 9> info all
Program Status Group Type Lag at Chkpt Time Since Chkpt
ADMINSRVR RUNNING
DISTSRVR RUNNING
PMSRVR RUNNING
RECVSRVR RUNNING
若不配置复制槽，会报错：OGG-25374
Oracle GoldenGate Capture for PostgreSQL, EXT1.prm: The replication slot 'ext1_eaa1c3d574a94c47' for group 'EXT1' does not exist in the database 'lhrdb'.
配置PGA到PGB的实时同步
创建extract进程
若是报错：OGG-15409 Alias 'PG1' not found in credential store domain 'OracleGoldenGate'.
可以忽略，或者参考创建身份证明，在域OracleGoldenGate中创建PG1和PG2。
参数：
extract ext1
SETENV(PGCLIENTENCODING = "UTF8" )
SETENV(ODBCINI="/ogg213c/ogg_ma/odbc.ini" )
SOURCEDB PGDSN1 USERIDALIAS PG1, DOMAIN OGGMA
exttrail ./dirdat/e1
IGNOREREPLICATES
TRANLOGOPTIONS FILTERTABLE ogg.ckpt
table public.*;
创建replicate进程
参数：
replicat rep1
SETENV(PGCLIENTENCODING = "UTF8" )
SETENV(ODBCINI="/ogg213c/ogg_ma/odbc.ini" )
SETENV(NLS_LANG="AMERICAN_AMERICA.AL32UTF8")
TARGETDB PGDSN2 USERIDALIAS PG2, DOMAIN OGGMA
map public.*, target public.*;
配置B到A的实时同步
创建extract进程
参数：
extract ext2
SETENV(PGCLIENTENCODING = "UTF8" )
SETENV(ODBCINI="/ogg213c/ogg_ma/odbc.ini" )
SOURCEDB PGDSN2 USERIDALIAS PG2, DOMAIN OGGMA
exttrail ./dirdat/e2
IGNOREREPLICATES
TRANLOGOPTIONS FILTERTABLE ogg.ckpt
table public.*;
创建replicate进程
参数：
replicat rep2
SETENV(PGCLIENTENCODING = "UTF8")
SETENV(ODBCINI="/ogg213c/ogg_ma/odbc.ini")
SETENV(NLS_LANG="AMERICAN_AMERICA.AL32UTF8")
TARGETDB PGDSN1 USERIDALIAS PG1, DOMAIN OGGMA
map public.*, target public.*;
配置完成后的效果
压测同步并查看检测数据
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/pgsql/lib
-- 在PGA压测
sysbench /usr/share/sysbench/oltp_read_write.lua --db-driver=pgsql \
--pgsql-host=172.72.6.20 --pgsql-port=5432 \
--pgsql-user=postgres --pgsql-password=lhr --pgsql-db=lhrdb \
--table-size=1000 --tables=10 --threads=20 \
--events=999999999 --time=60 --report-interval=10 \
--db-ps-mode=disable --forced-shutdown=1 run
-- 在PGB压测
sysbench /usr/share/sysbench/oltp_read_write.lua --db-driver=pgsql \
--pgsql-host=172.72.6.21 --pgsql-port=5432 \
--pgsql-user=postgres --pgsql-password=lhr --pgsql-db=lhrdb \
--table-size=1000 --tables=10 --threads=20 \
--events=999999999 --time=60 --report-interval=10 \
--db-ps-mode=disable --forced-shutdown=1 run
在PGA侧加压
[root@docker35 ~]# export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/pgsql/lib
[root@docker35 ~]# sysbench /usr/share/sysbench/oltp_read_write.lua --db-driver=pgsql \
> --pgsql-host=172.72.6.20 --pgsql-port=5432 \
> --pgsql-user=postgres --pgsql-password=lhr --pgsql-db=lhrdb \
> --table-size=1000 --tables=10 --threads=20 \
> --events=999999999 --time=60 --report-interval=10 \
> --db-ps-mode=disable --forced-shutdown=1 run
sysbench 1.0.20 (using bundled LuaJIT 2.1.0-beta2)
Running the test with following options:
Number of threads: 20
Report intermediate results every 10 second(s)
Initializing random number generator from current time
Forcing shutdown in 61 seconds
Initializing worker threads...
Threads started!
[ 10s ] thds: 20 tps: 276.96 qps: 5884.44 (r/w/o: 4146.04/1108.42/629.97) lat (ms,95%): 215.44 err/s: 17.99 reconn/s: 0.00
[ 20s ] thds: 20 tps: 314.00 qps: 6681.87 (r/w/o: 4709.65/1257.81/714.41) lat (ms,95%): 150.29 err/s: 21.60 reconn/s: 0.00
[ 30s ] thds: 20 tps: 289.10 qps: 6186.99 (r/w/o: 4362.26/1159.82/664.91) lat (ms,95%): 150.29 err/s: 22.90 reconn/s: 0.00
[ 40s ] thds: 20 tps: 284.20 qps: 6040.41 (r/w/o: 4256.21/1137.30/646.90) lat (ms,95%): 132.49 err/s: 19.40 reconn/s: 0.00
[ 50s ] thds: 20 tps: 207.20 qps: 4382.53 (r/w/o: 3091.15/822.69/468.69) lat (ms,95%): 179.94 err/s: 13.60 reconn/s: 0.00
[ 60s ] thds: 20 tps: 267.65 qps: 5700.71 (r/w/o: 4015.83/1074.59/610.28) lat (ms,95%): 167.44 err/s: 19.20 reconn/s: 0.00
SQL statistics:
queries performed:
read: 245868
write: 65645
other: 37381
total: 348894
transactions: 16413 (269.81 per sec.)
queries: 348894 (5735.37 per sec.)
ignored errors: 1149 (18.89 per sec.)
reconnects: 0 (0.00 per sec.)
General statistics:
total time: 60.8276s
total number of events: 16413
Latency (ms):
min: 10.27
avg: 73.47
max: 2213.35
95th percentile: 161.51
sum: 1205833.27
Threads fairness:
events (avg/stddev): 820.6500/22.37
execution time (avg/stddev): 60.2917/0.38
可以看到数据是完全同步的！
在PGB侧加压
[root@docker35 ~]# sysbench /usr/share/sysbench/oltp_read_write.lua --db-driver=pgsql \
> --pgsql-host=172.72.6.21 --pgsql-port=5432 \
> --pgsql-user=postgres --pgsql-password=lhr --pgsql-db=lhrdb \
> --table-size=1000 --tables=10 --threads=20 \
> --events=999999999 --time=60 --report-interval=10 \
> --db-ps-mode=disable --forced-shutdown=1 run
sysbench 1.0.20 (using bundled LuaJIT 2.1.0-beta2)
Running the test with following options:
Number of threads: 20
Report intermediate results every 10 second(s)
Initializing random number generator from current time
Forcing shutdown in 61 seconds
Initializing worker threads...
Threads started!
[ 10s ] thds: 20 tps: 235.78 qps: 5027.44 (r/w/o: 3544.39/944.82/538.23) lat (ms,95%): 257.95 err/s: 15.89 reconn/s: 0.00
[ 20s ] thds: 20 tps: 256.61 qps: 5544.15 (r/w/o: 3914.04/1036.44/593.67) lat (ms,95%): 227.40 err/s: 22.78 reconn/s: 0.00
[ 30s ] thds: 20 tps: 181.34 qps: 3826.18 (r/w/o: 2694.53/723.94/407.71) lat (ms,95%): 831.46 err/s: 10.91 reconn/s: 0.00
[ 40s ] thds: 20 tps: 222.26 qps: 4656.12 (r/w/o: 3276.83/882.37/496.92) lat (ms,95%): 240.02 err/s: 11.95 reconn/s: 0.00
[ 50s ] thds: 20 tps: 196.54 qps: 4139.82 (r/w/o: 2914.00/785.87/439.96) lat (ms,95%): 292.60 err/s: 11.34 reconn/s: 0.00
[ 60s ] thds: 20 tps: 357.50 qps: 7705.61 (r/w/o: 5437.29/1442.80/825.52) lat (ms,95%): 116.80 err/s: 30.87 reconn/s: 0.00
SQL statistics:
queries performed:
read: 217896
write: 58206
other: 33054
total: 309156
transactions: 14526 (241.82 per sec.)
queries: 309156 (5146.58 per sec.)
ignored errors: 1038 (17.28 per sec.)
reconnects: 0 (0.00 per sec.)
General statistics:
total time: 60.0658s
total number of events: 14526
Latency (ms):
min: 8.17
avg: 82.55
max: 3373.88
95th percentile: 227.40
sum: 1199186.82
Threads fairness:
events (avg/stddev): 726.3000/19.53
execution time (avg/stddev): 59.9593/0.07
查看性能数据
http://192.168.66.35:19004/
其它内容不再截图。
双向同步测试完成，完美！
本文结束。
未经允许不得转载：便宜VPS » 使用OGG 微服务搭建PostgreSQL双主实时同步架构