由于项目需要，测试部署单副本 oceanbase-3.2.4.1 企业版
1. 安装前提
准备4cpu,12G内存,100G磁盘
统为centos7.9
yum install -y yum-utils wget net-tools tree
yum-config-manager --add-repo https://mirrors.aliyun.com/oceanbase/OceanBase.repo
2. 创建用户
useradd -U admin -d /home/admin -s /bin/bash
mkdir -p /home/admin
chown -R admin:admin /home/admin
mkdir -p /data
chown -R admin:admin /data
3. 安装 oceanbase-3.2.4.1 企业版软件
Rpm包下载地址：https://www.oceanbase.com/softwarecenter-enterprise
下载完之后上传安装
4. 初始化目录
su -- admin
vi /home/admin/.bash_profile
填入 export cluster_name=obdemo
echo $cluster_name
mkdir -p /data/1/$cluster_name/{etc3,sort_dir,sstable}
mkdir -p /data/log1/$cluster_name/{clog,etc2,ilog,slog,oob_clog}
mkdir -p /home/admin/oceanbase/store/$cluster_name
for t in {etc3,sort_dir,sstable};do ln -s /data/1/cluster_name/t /home/admin/oceanbase/store/cluster_name/t; done
for t in {clog,etc2,ilog,slog,oob_clog};do ln -s /data/log1/cluster_name/t /home/admin/oceanbase/store/cluster_name/t; done
验证：
5. 安装客户端
yum install -y obclient
6. 初始化
su - admin
cd /home/admin/oceanbase
ip a检查网卡名称，对应修改
/home/admin/oceanbase/bin/observer -i ens33 -P 2882 -p 2881 -z zone1 -d /home/admin/oceanbase/store/obdemo -r '192.168.207.143:2882:2881' -c 10001 -n obdemo -o "__min_full_resource_pool_memory=268435456,system_memory=1G,datafile_size=10G,config_additional_dir=/data/1/obdemo/etc3;/data/log1/obdemo/etc2"
参数解析：
命令执行结果
通过 netstat -ntlp 监听 observer 进程是否启动成功，如果监听到了 2881 与 2882 端口，则说明进程启动成功。
基本操作
obclient -h127.0.0.1 -uroot -P2881 -p #登陆，默认空密码
SET SESSION ob_query_timeout=1000000000; #设置会话超时时间
ALTER SYSTEM BOOTSTRAP ZONE 'zone1' SERVER '192.168.207.143:2882'; #修改系统引导区域为'zone1'，并将其关联到服务器'192.168.207.143:2882'
SHOW DATABASES; #查看库
ALTER USER root IDENTIFIED BY 'linux123'; # 修改密码
7. 创建 OceanBase 租户
7.1 降低sys租户的资源
alter resource unit sys_unit_config min_cpu=1,max_cpu=1;
alter resource unit sys_unit_config min_memory='1G',max_memory='1G';
7.2 创建资源单元规格
资源单元仅仅是规格定义，不实际分配资源。
CREATE RESOURCE UNIT unit001
MAX_CPU 0.1,MAX_MEMORY '256M',MAX_IOPS 128,MAX_DISK_SIZE '512M',MAX_SESSION_NUM 64,
MIN_CPU 0.1,MIN_MEMORY '256M',MIN_IOPS 128;
根据系统资源调整：
CREATE RESOURCE UNIT unit001
MAX_CPU 8,MAX_MEMORY '8G',MAX_IOPS 1280,MAX_DISK_SIZE '1000G',MAX_SESSION_NUM 640,
MIN_CPU 2,MIN_MEMORY '1G',MIN_IOPS 1280;
7.3 创建资源池
资源池会实际创建 unit，按规格定义分配资源。
CREATE RESOURCE POOL pool001
UNIT='unit001',UNIT_NUM=1,ZONE_LIST=('zone1');
7.4 创建租户
将资源池分配给对应的租户
创建 Oracle 兼容模式租户
CREATE TENANT IF NOT EXISTS oracle001
CHARSET='utf8mb4',
PRIMARY_ZONE='zone1',
RESOURCE_POOL_LIST=('pool001')
SET ob_tcp_invited_nodes='%',ob_compatibility_mode='oracle';
设置管理员用户密码 （默认空密码）
obclient -h127.0.0.1 -P2881 -usys@oracle001 -p -A
SET PASSWORD = PASSWORD(linux123);
- 查看所有数据库用户命令
SELECT * FROM all_users;
- 查看当前连接数据库用户
SHOW PROCESSLIST;
-- 通过 SQL 修改用户密码
ALTER USER SYS IDENTIFIED BY "1";
[admin@lnpg oceanbase]$ obclient -h127.0.0.1 -P2881 -usys@oracle001 -plinux123 -A
Welcome to the OceanBase. Commands end with ; or \g.
Your OceanBase connection id is 3221487686
Server version: OceanBase 3.2.4.1 (r101000052023010822-346aa35c32e99d1b82d713f75f0072c45bdf7aab) (Built Jan 8 2023 22:52:43)
Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
obclient [SYS]> show tables;
ORA-00900: You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'tables' at line 1
obclient [SYS]> create table test(id int);
Query OK, 0 rows affected (0.040 sec)
obclient [SYS]> insert into test values(1);
Query OK, 1 row affected (0.005 sec)
obclient [SYS]> commit;
Query OK, 0 rows affected (0.001 sec)
obclient [SYS]> select * from test;
+------+
| ID |
+------+
| 1 |
+------+
1 row in set (0.004 sec)
obclient [SYS]> create user admin identified by admin;
Query OK, 0 rows affected (0.018 sec)
obclient [SYS]> grant dba to admin;
Query OK, 0 rows affected (0.019 sec)
obclient [SYS]> exit
Bye
[admin@lnpg oceanbase]$
