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diff --git "a/content/zh/post/enmo/opengauss\345\217\214region\346\265\201\345\274\217\345\256\271\347\201\276\346\220\255\345\273\272.md" "b/content/zh/post/enmo/opengauss\345\217\214region\346\265\201\345\274\217\345\256\271\347\201\276\346\220\255\345\273\272.md"
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+title = "opengauss双region流式容灾搭建"
+
+date = "2023-05-30"
+
+tags = ["openGauss"]
+
+archives = "2023-05"
+
+author = "云和恩墨-戚钰"
+
+summary = "opengauss双region流式容灾搭建"
+
+img = "/zh/post/enmo/title/img.png"
+
+times = "10:20"
++++
+
+本文出处：[https://www.modb.pro/db/626197](https://www.modb.pro/db/626197)
+
+# 一、主备双集群部署
+
+架构：主集群：一主一备；灾备集群：一主一备
+
+**1. 安装集群1**
+
+主节点：192.168.0.141
+备节点：192.168.0.145
+
+xml文件参考：
+
+```
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+```
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+**2. 安装集群2**
+
+主节点：192.168.0.142
+备节点：192.168.0.143
+
+xml文件参考：
+
+```
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+```
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+**3. 在主集群创建容灾用户**
+
+```
+gsql -d postgres -p PORT -c "create user DR_USERNAME with replication password 'DR_PASSWORD';"
+```
+
+**4. 将集群1启动为主集群**
+
+```
+gs_sdr -t start -m primary -X XMLFILE [-U DR_USERNAME [-W DR_PASSWORD]] [--time-out=SECS]
+```
+
+**5. 将集群2启动为备集群**
+
+```
+gs_sdr -t start -m disaster_standby -U USER -W PASSWORD -X XMLFILE [-U DR_USERNAME [-W DR_PASSWORD]] [--time-out=SECS]
+```
+
+**6. 查询**
+
+```
+gs_sdr -t query
+```
+
+主集群：
+
+
+
+
+
+备集群：
+
+
+
+
+
+以上：
+
+-U容灾用户名，-W容灾用户密码，为可选参数，如果未携带需要在搭建过程中交互输入；
+
+–time-out超时时间，为可选参数，默认为1200秒。
+
+# 二、搭建容灾关系前后参数对比
+
+**1. 方案**
+
+搭建前后将流复制相关参数导入文件，使用diff对比
+
+**2. 步骤**
+
+```
+gsql -p 26000 -d postgres -c "select name,reset_val from pg_settings where category ='Write-Ahead Log / Settings'">settings1.log
+gsql -p 26000 -d postgres -c "select name,reset_val from pg_settings where category ='Write-Ahead Log / Checkpoints'" >>settings1.log
+gsql -p 26000 -d postgres -c "select name,reset_val from pg_settings where category ='Replication / Sending Servers'" >>settings1.log
+gsql -p 26000 -d postgres -c "select name,reset_val from pg_settings where category ='Resource usage / Recovery'" >>settings1.log
+gsql -p 26000 -d postgres -c "select name,reset_val from pg_settings where category ='Replication / Master Server'" >>settings1.log
+gsql -p 26000 -d postgres -c "select name,reset_val from pg_settings where category ='Replication / Standby Servers'" >>settings1.log
+```
+
+1. 对比结果
+
+前
+
+```
+< replconninfo1| localhost=192.168.0.141 localport=26001 localheartbeatport=26005 localservice=26004 remotehost=192.168.0.145 remoteport=26001 remoteheartbeatport=26005 remoteservice=26004
+< replconninfo2|
+< replconninfo3|
+```
+
+后
+
+```
+> replconninfo1| localhost=192.168.0.141 localport=26001 localheartbeatport=26005 localservice=26004 remotehost=192.168.0.145 remoteport=26001 remoteheartbeatport=26005 remoteservice=26004 iscascade=true iscrossregion=false
+> replconninfo2| localhost=192.168.0.141 localport=26001 localheartbeatport=26005 localservice=26004 remotehost=192.168.0.142 remoteport=26001 remoteheartbeatport=26005 remoteservice=26004 iscascade=false iscrossregion=true
+> replconninfo3| localhost=192.168.0.141 localport=26001 localheartbeatport=26005 localservice=26004 remotehost=192.168.0.143 remoteport=26001 remoteheartbeatport=26005 remoteservice=26004 iscascade=false iscrossregion=true
+```
+
+前
+
+```
+< wal_keep_segments | 16
+```
+
+后
+
+```
+> wal_keep_segments | 128
+```
+
+注：主集群搭建后wal_keep_segments=128,备集群搭建后wal_keep_segments=16
+
+前
+
+```
+< most_available_sync | off
+```
+
+后
+
+```
+> most_available_sync | on
+```
+
+后（新增）
+
+opgs1com/opgs2com
+
+```
+stream_cluster_run_mode = 'cluster_primary'
+```
+
+opgs3com/opgs4com
+
+```
+stream_cluster_run_mode = 'cluster_standby'
+```