diff --git "a/content/zh/post/OMGZEXAL/openGauss 5.0 \345\215\225\350\212\202\347\202\271\345\256\211\350\243\205\351\203\250\347\275\262\344\270\216\344\275\277\347\224\250" "b/content/zh/post/OMGZEXAL/openGauss 5.0 \345\215\225\350\212\202\347\202\271\345\256\211\350\243\205\351\203\250\347\275\262\344\270\216\344\275\277\347\224\250" new file mode 100644 index 0000000000000000000000000000000000000000..b5fbbdf1af0b6e2ba0c2acd5cd8820e5bf6560f0 --- /dev/null +++ "b/content/zh/post/OMGZEXAL/openGauss 5.0 \345\215\225\350\212\202\347\202\271\345\256\211\350\243\205\351\203\250\347\275\262\344\270\216\344\275\277\347\224\250" @@ -0,0 +1,167 @@ +--- +title: 'openGauss 5.0 单节点安装部署与使用' + +date: '2023-07-18' + +category: 'blog' +tags: + [ + 'openGauss 5.0 单节点安装部署与使用', + ] + +archives: '2023-07' + +author: 'OMGZEXAL' + +summary: 'openGauss 5.0 单节点安装部署与使用' + +img: '/zh/blogs/enmo/title/img.png' + +times: '12:40' +--- + +@[toc] +# 1.环境准备 + +##### 1.1 安装依赖包文件 + +`[root@localhost ~]# yum install libaio-devel flex bison ncurses-devel glibc-devel patch redhat-lsb-core readline-devel libnsl` + +##### 1.2 关闭selinux和防火墙 +``` +vim /etc/selinux/config +``` +修改config文件，将SELINUX的值变为"disabled" +![](https://oss-emcsprod-public.modb.pro/image/editor/20230705-3de3549c-6534-41b8-b241-9658893ea91a.png) +检测防火墙是否关闭 +``` +systemctl status firewalld +systemctl stop firewalld +systemctl disable firewalld +``` +![](https://oss-emcsprod-public.modb.pro/image/editor/20230705-f3d683db-cd79-469a-aed8-6dc7bc877463.png) + +##### 1.3 设置字符集参数 + +vim /etc/profile在行尾添加 +``` +export LANG=en_US.UTF-8 +``` +##### 1.4 关闭swap + +`swapoff -a` (当内存较小时，可打开) + +##### 1.5 关闭RemoveIPC +(因为使用的环境为CentOS，默认关闭) +![](https://oss-emcsprod-public.modb.pro/image/editor/20230705-5d01f3cf-722d-4ee3-89e5-45d5a90755de.png) + + + +# 2.安装 + +##### 2.1 创建工作用户和目录 +``` +[root@localhost opt]# useradd opengauss +[root@localhost opt]# mkdir -p /opt/opengauss +``` +##### 2.2 解压压缩包到安装目录、对目录授权并进行安装 +``` +[root@localhost tmp]# tar -jxf openGauss-5.0.0-CentOS-64bit.tar.bz2 -C /opt/opengauss +[root@localhost tmp]# cd /opt/opengauss/ +[root@localhost opengauss]# chmod 755 -R /opt/opengauss +[root@localhost opengauss]# chown -R opengauss /opt/opengauss +[root@localhost opengauss]# sudo -iu opengauss +[opengauss@localhost ~]$ cd /opt/opengauss/simpleInstall +[opengauss@localhost simpleInstall]$ sh install.sh -w "52@openGauss" &&source ~/.bashrc +``` +(注意：如果出现这种错误，请使用拥有root权限的用户执行`sysctl -w kernel.sem="250 85000 250 330"`即可) +![](https://oss-emcsprod-public.modb.pro/image/editor/20230705-0d56cb7c-217f-4470-a0bc-2ec4fb0fba1f.png) + +##### 2.3 检查进程，判断数据库是否启动 +``` +[opengauss@localhost ~]$ ps -ef | grep gauss +opengau+ 4946 1 3 11:20 ? 00:08:09 /opt/opengauss/bin/gaussdb -D /opt/opengauss/data/single_node +root 10843 3518 0 14:04 pts/0 00:00:00 sudo -iu opengauss +root 19289 3846 0 15:50 pts/1 00:00:00 sudo -iu opengauss +opengau+ 19387 19291 0 15:51 pts/1 00:00:00 grep --color=auto gauss +``` +也可以使用`gs_ctl status`命令，判断数据库状态： +``` +[opengauss@localhost ~]$ gs_ctl status +[2023-07-05 15:53:37.581][19531][][gs_ctl]: gs_ctl status,datadir is /opt/opengauss/data/single_node +gs_ctl: server is running (PID: 4946) +/opt/opengauss/bin/gaussdb "-D" "/opt/opengauss/data/single_node" +``` +##### 2.4 使用`gs_ctl notify`查看数据文件目录 +``` +[opengauss@localhost ~]$ gs_ctl notify +[2023-07-05 16:00:42.972][20104][][gs_ctl]: gs_ctl notify ,datadir is /opt/opengauss/data/single_node +[2023-07-05 16:00:42.973][20104][][gs_ctl]: the parameter of notify must be specified +``` + + +# 3.日常使用 + +##### 3.1 查看版本信息 +可以使用`select version()`查看数据库版本，使用`show server_version`查看pg基础版本 +![](https://oss-emcsprod-public.modb.pro/image/editor/20230705-25e38786-8582-4e3e-bf4e-fff241e86710.png) + +##### 3.2 常用命令   +`\l`查看当前有哪些数据库 +`\c`查看当前会话连接信息 +`\db`查看有哪些表空间 +`\du`查看用户和角色 +`\dn`查看当前数据库有哪些schema +`\dt`查看数据库中所有表 +![](https://oss-emcsprod-public.modb.pro/image/editor/20230705-7d0a36a9-e5af-4ba5-b7e0-9de2371cf64f.png) + +##### 3.3 创建用户并授予权限 +``` +openGauss=# CREATE USER test1 IDENTIFIED BY 'opengauss@2023'; +CREATE ROLE +openGauss=# ALTER USER test1 CREATEROLE; +ALTER ROLE +``` +![image.png](https://oss-emcsprod-public.modb.pro/image/editor/20230707-f65ba4a8-84fd-48b7-b797-95ba8966770c.png) + +##### 3.4 创建表并插入数据 +``` +openGauss=# create table test0707(id CHAR(2) NOT NULL,update_user VARCHAR(20) NOT NULL); +CREATE TABLE +openGauss=# insert into test0707(id,update_user) values(1,'Bob'); +INSERT 0 1 +``` +![image.png](https://oss-emcsprod-public.modb.pro/image/editor/20230707-da4d7ee1-d8d0-4c41-be84-30e502527c3e.png) + +##### 3.5 创建模式 +创建了两个schema +``` +openGauss=# create schema t1 AUTHORIZATION test1; +CREATE SCHEMA +openGauss=# create schema t2 AUTHORIZATION test1; +CREATE SCHEMA +``` +![image.png](https://oss-emcsprod-public.modb.pro/image/editor/20230707-fd01d684-efe1-4d8c-8b3d-eebfc066451d.png) +在不同schema下创建表名均为test01的表，插入不同数据 +``` +openGauss=# create table t1.test01(id CHAR(2) NOT NULL,update_user VARCHAR(20) NOT NULL); +CREATE TABLE +openGauss=# insert into t1.test01(id,update_user) values(2,'Tom'); +INSERT 0 1 +openGauss=# create table t2.test01(id CHAR(2) NOT NULL,update_user VARCHAR(20) NOT NULL); +CREATE TABLE +openGauss=# insert into t2.test01(id,update_user) values(3,'Nancy'); +INSERT 0 1 +``` +![image.png](https://oss-emcsprod-public.modb.pro/image/editor/20230707-d889b1d2-ac17-40e9-92c2-6d8e2ea799c9.png) +通过结果可以看出，不切换对应schema，是无法进行查看其他schema的内容 + +# 尾语 +本文简单描述了openGauss的安装与使用，可供初学者进行参考，希望openGauss越做越好 + + +::: hljs-center + +==走过路过点个赞== + +::: diff --git a/content/zh/post/OMGZEXAL/title/.keep b/content/zh/post/OMGZEXAL/title/.keep new file mode 100644 index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391