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++++
+
+title = "使用BenchmarkSQL压测openGauss"
+
+date = "2021-02-05"
+
+tags = ["使用BenchmarkSQL压测openGauss"]
+
+archives = "2021-02"
+
+author = "金立新"
+
+summary = "使用BenchmarkSQL压测openGauss"
+
+img = "/zh/post/jinlixin/title/img5.png"
+
+times = "12:30"
+
++++
+
+# 使用BenchmarkSQL压测openGauss
+
+## 安装配置JDK
+
+1. 官方网站下载JDK:https://www.oracle.com/technetwork/java/javase/downloads/index.html
+2. 配置JDK环境解压到JDK到指定路径。
+
+ ```
+ # 解压到JDK到指定路径
+ tar -xvf jdk-8u231-linux-x64.tar.gz -C /usr/local
+ # 配置系统环境变量
+ /etc/profile末尾添加内容如下:
+ export JAVA_HOME=/usr/local/jdk1.8.0_231
+ export CLASSPATH=$JAVA_HOME/lib/
+ export PATH=$PATH:$JAVA_HOME/bin
+ # 配置成功测试
+ source /etc/profile
+ java -version
+ ```
+
+
+## 安装配置R语言环境
+
+1. 下载R。
+
+ ```
+ wget http://lib.stat.cmu.edu/R/CRAN/src/base/R-3/R-3.0.0.tar.gz
+ ```
+
+2. 编译安装R。
+
+ ```
+ a、解压到R到指定路径
+ tar -xvf R-3.0.0.tar.gz /opt/software/R
+ 编译安装R
+ cd /opt/software/R
+ ./configure --prefix=/usr/R --with-pcre1
+ b、配置系统环境变量
+ /etc/profile末尾添加内容如下:
+ export R_HOME=/usr/R/
+ export PATH=$PATH:$R_HOME/bin
+ c、配置成功测试
+ source /etc/profile
+ R -version
+ ```
+
+ > **说明:**
+ >编译R语言之前需要安装gcc,gcc-gfortran,libXt-devel等包,yum安装需要配置如下yum源:否者会导致依赖缺失。内网无yum环境建议使用源码安装,需要安装的依赖包较少。
+
+ - base: mirrors.ustc.edu.cn
+ - centos-sclo-rh: mirrors.aliyun.com
+ - epel: mirrors.ustc.edu.cn
+ - extras: mirrors.aliyun.com
+ - updates: mirrors.aliyun.com
+
+
+## 安装ant
+
+1. 官方网站下载Ant工程:
+
+ http://ant.apache.org/
+
+2. 配置安装解压Ant到指定路径。
+
+ ```
+ tar -xvf apache-ant-1.10.7-bin.tar.gz -C /usr/local/ant
+ ```
+
+3. 配置环境变量与JDK配置方式相同,/etc/profile末尾添加内容如下:
+
+ ```
+ export ANT_HOME=/usr/local/ant
+ export PATH=$PATH:$ANT_HOME/bin
+ ```
+
+4. 配置测试。
+
+ ```
+ source /etc/profile
+ ant -version
+ ```
+
+
+## 配置使用BenchmarkSQL
+
+1. 下载官方工程(当前最新版本为5.0):
+
+ https://sourceforge.net/projects/benchmarksql/
+
+2. 解压到合适的目录。
+
+ ```
+ unzip benchmarksql-5.0.zip
+ ```
+
+3. 使用Ant进行工程编译。
+
+ ```
+ cd benchmarksql-5.0/ //进入benchmarksql根目录
+ ant //执行ant命令,ant工具通过根目录下build.xml文件对源码进行编译并打包到/dist目录下
+ ```
+
+4. 配置BenchmarkSQL。
+
+ ```
+ a、配置props文件
+ 进入run目录,会看到多个不同后缀名的props文件,不同的文件配置不同的数据库,由于我们需要压测postgresql和openGauss,openGauss兼容postgresql,需要配置props.pg文件。cp props.pg props.opengauss在配置文件中需要修改的包括conn,user, password(这三项用于连接指定的数据库,因此需要提前在postgresql中创建好对应的DB以及用户) 。配置项具体如下:
+ db=postgres
+ driver=org.postgresql.Driver
+ conn=jdbc:postgresql://192.168.1.155:5432/tpcc
+ user=
+ password= //以上为数据库连接信息
+ warehouses=100 //数据仓库数量,每个仓库大概为100M,数据量50W。压测并发数量最多为该值的10倍,需要提前规划好
+ loadWorkers=8 //导入数据时,同时导入数据的进程数量
+ terminals=1000 //并发数,不超过造数时warehouses值的10倍
+ runMins=3 //压测时间,分钟为单位
+ terminalWarehouseFixed=true //指定每个终端是否绑定固定数仓,值为布尔型
+ resultDirectory=my_result_%tY-%tm-%td_%tH%tM%tS //报告路径格式
+ b、在opengauss社区下载与openGauss实例版本相匹配的的官方驱动,放入benchmarksql/lib/postgres目录下,替换postgresql的驱动,使用官方驱动适配性更好,表现更好。
+ ```
+
+5. 运行测试。
+
+ ```
+ cd run //进入run目录
+ ./runDatabaseBuild.sh props.opengauss //进行测试库创建,数据导入
+ ./runBenchmark.sh props.opengauss //执行配置好的测试
+ ./runDatabaseDestroy.sh props.opengauss //清理数据
+ ```
+
+6. 生成报告。
+
+ 测试结束后,run目录下会生成一个新目录,它的命名格式为 my\_result\_%tY-%tm-%td\_%tH%tM%tS。
+
+ 使用 generateReport.sh脚本创建具有图形的 HTML 文件:./generateReport.sh my\_result\_2020-11-02\_221047随后会在my\_result\_\* 目录下生成一个html文件和数张图片,下载到本地,在浏览器中打开report.html,可以看到tpmc的曲线和系统硬件监控信息。
+
+
diff --git "a/content/zh/post/tracy/openGuass\344\270\273\345\244\207\345\210\207\346\215\242\344\271\213switchover\344\270\216failover.md" "b/content/zh/post/tracy/openGuass\344\270\273\345\244\207\345\210\207\346\215\242\344\271\213switchover\344\270\216failover.md"
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index 0000000000000000000000000000000000000000..ea40315b1ba0f231e84e41953626b383f709f035
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++++
+
+title = "openGuass主备切换之switchover与failover"
+
+date = "2021-02-05"
+
+tags = ["openGauss主备"]
+
+archives = "2021-02"
+
+author = "tracy"
+
+summary = "openGuass主备切换之switchover与failover"
+
+img = "/zh/post/tracy/title/img20.png"
+
+times = "10:30"
+
++++
+
+# openGuass主备切换之switchover与failover
+
+## switchover
+
+在主备机正常时,出于维护的需要,将备机切换为主机,可保证切换过程中数据不丢失。
+
+查看集群实例主备状态:1节点为主库,2节点为备库。
+
+```
+$ gs_om -t status --detail
+[ Cluster State ]
+cluster_state : Normal
+redistributing : No
+current_az : AZ_ALL
+[ Datanode State ]
+node node_ip instance state | node node_ip instance state
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------
+1 cen7-og1-02 192.168.229.53 6001 /opt/openGuass/data/dn P Primary Normal | 2 cen7-og1-03 192.168.229.54 6002 /opt/openGuass/data/dn S Standby Normal
+```
+
+在备节点执行切换主备操作:
+
+```
+$ gs_ctl switchover -D /opt/openGuass/data/dn
+[2021-01-15 02:44:55.125][1034][][gs_ctl]: gs_ctl switchover ,datadir is /opt/openGuass/data/dn
+[2021-01-15 02:44:55.125][1034][][gs_ctl]: switchover term (1)
+[2021-01-15 02:44:55.137][1034][][gs_ctl]: waiting for server to switchover..............
+[2021-01-15 02:45:06.250][1034][][gs_ctl]: done
+[2021-01-15 02:45:06.250][1034][][gs_ctl]: switchover completed (/opt/openGuass/data/dn)
+```
+
+确认集群主备状态:1节点为备库,2节点为主库。
+
+```
+$ gs_om -t status --detail
+[ Cluster State ]
+cluster_state : Normal
+redistributing : No
+current_az : AZ_ALL
+[ Datanode State ]
+node node_ip instance state | node node_ip instance state
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------
+1 cen7-og1-02 192.168.229.53 6001 /opt/openGuass/data/dn P Standby Normal | 2 cen7-og1-03 192.168.229.54 6002 /opt/openGuass/data/dn S Primary Normal
+```
+
+保存数据库主备机器信息:确保gs\_om -t refreshconf 命令执行成功,否则再次重启会影响数据库状态。
+
+```
+$ gs_om -t refreshconf
+Generating dynamic configuration file for all nodes.
+Successfully generated dynamic configuration file.
+```
+
+## failover
+
+在主机异常时,将备机切换为主机。
+
+查看集群实例主备状态:1节点为备库,2节点为主库。
+
+```
+$ gs_om -t status --detail
+[ Cluster State ]
+cluster_state : Normal
+redistributing : No
+current_az : AZ_ALL
+[ Datanode State ]
+node node_ip instance state | node node_ip instance state
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------
+1 cen7-og1-02 192.168.229.53 6001 /opt/openGuass/data/dn P Standby Normal | 2 cen7-og1-03 192.168.229.54 6002 /opt/openGuass/data/dn S Primary Normal
+```
+
+备节点执行主备切换操作:
+
+```
+$ gs_ctl failover -D /opt/openGuass/data/dn
+[2021-01-15 03:33:13.803][17292][][gs_ctl]: gs_ctl failover ,datadir is /opt/openGuass/data/dn
+[2021-01-15 03:33:13.803][17292][][gs_ctl]: failover term (1)
+[2021-01-15 03:33:13.810][17292][][gs_ctl]: waiting for server to failover...
+[2021-01-15 03:33:14.823][17292][][gs_ctl]: done
+[2021-01-15 03:33:14.823][17292][][gs_ctl]: failover completed (/opt/openGuass/data/dn)
+```
+
+确认集群主备状态:双主状态。
+
+```
+$ gs_om -t status --detail
+[ Cluster State ]
+cluster_state : Unavailable
+redistributing : No
+current_az : AZ_ALL
+[ Datanode State ]
+node node_ip instance state | node node_ip instance state
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------
+1 cen7-og1-02 192.168.229.53 6001 /opt/openGuass/data/dn P Primary Normal | 2 cen7-og1-03 192.168.229.54 6002 /opt/openGuass/data/dn S Primary Normal
+```
+
+在确定降为备机的节点关闭并以standy模式启动OpenGuass服务:
+
+```
+$ gs_ctl start -D /opt/openGuass/data/dn -M standby
+[2021-01-15 03:03:08.695][9126][][gs_ctl]: gs_ctl started,datadir is /opt/openGuass/data/dn
+[2021-01-15 03:03:08.864][9126][][gs_ctl]: waiting for server to start...
+......
+[2021-01-15 03:03:10.921][9126][][gs_ctl]: done
+[2021-01-15 03:03:10.921][9126][][gs_ctl]: server started (/opt/openGuass/data/dn)
+```
+
+确认集群状态:1节点为主库,2节点为备库,但备库需要修复。
+
+```
+$ gs_om -t status --detail
+[ Cluster State ]
+cluster_state : Degraded
+redistributing : No
+current_az : AZ_ALL
+[ Datanode State ]
+node node_ip instance state | node node_ip instance state
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------
+1 cen7-og1-02 192.168.229.53 6001 /opt/openGuass/data/dn P Primary Normal | 2 cen7-og1-03 192.168.229.54 6002 /opt/openGuass/data/dn S Standby Need repair(WAL)
+```
+
+在备库所在节点执行修复命令:
+
+```
+[omm@cen7-og1-03 ~]$ gs_ctl build -D /opt/openGuass/data/dn
+[2021-01-15 03:23:57.702][30784][][gs_ctl]: gs_ctl incremental build ,datadir is /opt/openGuass/data/dn
+waiting for server to shut down.... done
+server stopped
+[2021-01-15 03:23:58.726][30784][][gs_ctl]: fopen build pid file "/opt/openGuass/data/dn/gs_build.pid" success
+[2021-01-15 03:23:58.726][30784][][gs_ctl]: fprintf build pid file "/opt/openGuass/data/dn/gs_build.pid" success
+[2021-01-15 03:23:58.727][30784][][gs_ctl]: fsync build pid file "/opt/openGuass/data/dn/gs_build.pid" success
+......
+[2021-01-15 03:24:02.833][30784][dn_6001_6002][gs_ctl]: done
+[2021-01-15 03:24:02.833][30784][dn_6001_6002][gs_ctl]: server started (/opt/openGuass/data/dn)
+[2021-01-15 03:24:02.833][30784][dn_6001_6002][gs_ctl]: fopen build pid file "/opt/openGuass/data/dn/gs_build.pid" success
+[2021-01-15 03:24:02.833][30784][dn_6001_6002][gs_ctl]: fprintf build pid file "/opt/openGuass/data/dn/gs_build.pid" success
+[2021-01-15 03:24:02.835][30784][dn_6001_6002][gs_ctl]: fsync build pid file "/opt/openGuass/data/dn/gs_build.pid" success
+```
+
+确认集群状态:正常。
+
+```
+$ gs_om -t status --detail
+[ Cluster State ]
+cluster_state : Normal
+redistributing : No
+current_az : AZ_ALL
+[ Datanode State ]
+node node_ip instance state | node node_ip instance state
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------
+1 cen7-og1-02 192.168.229.53 6001 /opt/openGuass/data/dn P Primary Normal | 2 cen7-og1-03 192.168.229.54 6002 /opt/openGuass/data/dn S Standby Normal
+```
+
+保存数据库主备机器信息:确保gs\_om -t refreshconf 命令执行成功,否则再次重启会影响数据库状态。
+
+```
+$ gs_om -t refreshconf
+Generating dynamic configuration file for all nodes.
+Successfully generated dynamic configuration file.
+```
+
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