环境信息： CentOS Linux release 7.2.1511
安装版本： 3.1.0 单机
1、安装步骤
通过 YUM 软件源安装 OBD
sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://mirrors.aliyun.com/oceanbase/OceanBase.repo
sudo yum install -y ob-deploy
2、部署 OceanBase 数据库
2.1、增加配置文件
本地安装：即中控机器和目标机器是同一台机器，配置文件。
单机安装：即中控机器和目标机器不是同一台机器，且目标机器只有一台，配置文件。
分布式安装：配置文件。
配置信息如下
[root@xlucas1 oceanbase]# pwd
/opt/oceanbase
[root@xlucas1 oceanbase]# cat mini-local-example.yaml
oceanbase-ce:
servers:
# Please don't use hostname, only IP can be supported
- 127.0.0.1
global:
home_path: /opt/oceanbase/data
#这个路径一定要是是空的，否则会安装失败
# Please set devname as the network adaptor's name whose ip is in the setting of severs.
# if set severs as "127.0.0.1", please set devname as "lo"
# if current ip is 192.168.1.10, and the ip's network adaptor's name is "eth0", please use "eth0"
devname: lo
mysql_port: 2883
rpc_port: 2882
zone: zone1
cluster_id: 1
datafile_size: 8G
# please set memory limit to a suitable value which is matching resource.
memory_limit: 8G
system_memory: 4G
stack_size: 512K
cpu_count: 16
cache_wash_threshold: 1G
__min_full_resource_pool_memory: 268435456
workers_per_cpu_quota: 10
schema_history_expire_time: 1d
# The value of net_thread_count had better be same as cpu's core number.
net_thread_count: 4
sys_bkgd_migration_retry_num: 3
minor_freeze_times: 10
enable_separate_sys_clog: 0
enable_merge_by_turn: FALSE
datafile_disk_percentage: 20
2.2、安装
注意这个路径是需要指定到配置文件
[root@xlucas1 oceanbase]# obd cluster deploy xlucas -c /opt/oceanbase/mini-local-example.yaml
安装成功提示
[root@xlucas1 oceanbase]# obd cluster deploy xlucas -c /opt/oceanbase/mini-local-example.yaml
oceanbase-ce-3.1.0 already installed
+-------------------------------------------------------------------+
| Packages |
+--------------+---------+------------------------------------------+
| Repository | Version | Md5 |
+--------------+---------+------------------------------------------+
| oceanbase-ce | 3.1.0 | 56f57e9843e719d830ec03c206d914f4b3adc82b |
+--------------+---------+------------------------------------------+
Open ssh connection ok
Remote oceanbase-ce-3.1.0-56f57e9843e719d830ec03c206d914f4b3adc82b repository install ok
Remote oceanbase-ce-3.1.0-56f57e9843e719d830ec03c206d914f4b3adc82b repository lib check ok
127.0.0.1 initializes cluster work home
xlucas deployed
3、使用数据库
3.1、启动数据库
[root@xlucas1 oceanbase]# obd cluster start xlucas
Get local repositories and plugins ok
[WARN] (127.0.0.1) fs.aio-max-nr must not be less than 1048576 (Current value: 65536)
[WARN] (127.0.0.1) open files number must not be less than 655350 (Current value: 65535)
Start observer ok
observer program health check ok
Connect to observer ok
Initialize cluster
Cluster bootstrap ok
Wait for observer init ok
+---------------------------------------------+
| observer |
+-----------+---------+------+-------+--------+
| ip | version | port | zone | status |
+-----------+---------+------+-------+--------+
| 127.0.0.1 | 3.1.0 | 2883 | zone1 | active |
+-----------+---------+------+-------+--------+
xlucas running
3.2、查看数据库状态
[root@xlucas1 oceanbase]# obd cluster display xlucas
Get local repositories and plugins ok
Connect to observer ok
Wait for observer init ok
+---------------------------------------------+
| observer |
+-----------+---------+------+-------+--------+
| ip | version | port | zone | status |
+-----------+---------+------+-------+--------+
| 127.0.0.1 | 3.1.0 | 2883 | zone1 | active |
+-----------+---------+------+-------+--------+
3.3、安装 OceanBase 数据库客户端 OBClient
sudo yum install -y obclient
运行以下命令，使用 OBClient 客户端连接 OceanBase 数据库：
obclient -h<your_ip> -P<observer_mysql_port> -uroot
[root@xlucas1 ~]# obclient -h127.0.0.1 -P2883 -uroot
Welcome to the OceanBase. Commands end with ; or \g.
Your MySQL connection id is 3221487655
Server version: 5.7.25 OceanBase 3.1.0 (r-) (Built May 30 2021 11:21:29)
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MySQL [(none)]>
3.4、简单使用
MySQL [oceanbase]> select svr_ip,svr_port, cpu_total, mem_total, disk_total, zone from __all_virtual_server_stat;
+-----------+----------+-----------+------------+------------+-------+
| svr_ip | svr_port | cpu_total | mem_total | disk_total | zone |
+-----------+----------+-----------+------------+------------+-------+
| 127.0.0.1 | 2882 | 14 | 4294967296 | 8589934592 | zone1 |
+-----------+----------+-----------+------------+------------+-------+
1 row in set (0.007 sec)
5、遇到问题：
1、没有指定到配置文件，安装会报错，找不到配置文件
[root@xlucas1 oceanbase]# obd cluster deploy xlucas -c /opt/oceanbase/
[ERROR] copy error
[ERROR] Failed to create deploy: xlucas. please check you configuration file
2、在部署数据库的时候，配置文件中的home_path参数对应的路径要是空路径，否则会报错
[root@xlucas1 oceanbase]# obd cluster deploy xlucas -c /opt/oceanbase/mini-local-example.yaml
Update OceanBase-community-stable-el7 ok
Update OceanBase-development-kit-el7 ok
Download oceanbase-ce-3.1.0-1.el7.x86_64.rpm (44.17 M): 100% [####################################################################################################################################################] Time: 0:00:59 777.72 kB/s
Package oceanbase-ce-3.1.0 is available
install oceanbase-ce-3.1.0 for local ok
+-------------------------------------------------------------------+
| Packages |
+--------------+---------+------------------------------------------+
| Repository | Version | Md5 |
+--------------+---------+------------------------------------------+
| oceanbase-ce | 3.1.0 | 56f57e9843e719d830ec03c206d914f4b3adc82b |
+--------------+---------+------------------------------------------+
Open ssh connection ok
Remote oceanbase-ce-3.1.0-56f57e9843e719d830ec03c206d914f4b3adc82b repository install ok
Remote oceanbase-ce-3.1.0-56f57e9843e719d830ec03c206d914f4b3adc82b repository lib check !!
[WARN] 127.0.0.1 oceanbase-ce-3.1.0-56f57e9843e719d830ec03c206d914f4b3adc82b require: libmariadb.so.3
Try to get lib-repository
Download oceanbase-ce-libs-3.1.0-1.el7.x86_64.rpm (413.07 K): 100% [##############################################################################################################################################] Time: 0:00:00 826.11 kB/s
Package oceanbase-ce-libs-3.1.0 is available
install oceanbase-ce-libs-3.1.0 for local ok
Use oceanbase-ce-libs-3.1.0-b70d3839280f145a86af26811bbfcdfaeb645509 for oceanbase-ce-3.1.0-56f57e9843e719d830ec03c206d914f4b3adc82b
Remote oceanbase-ce-libs-3.1.0-b70d3839280f145a86af26811bbfcdfaeb645509 repository install ok
Remote oceanbase-ce-3.1.0-56f57e9843e719d830ec03c206d914f4b3adc82b repository lib check ok
127.0.0.1 initializes cluster work home
[ERROR] fail to init 127.0.0.1 home path: /opt/oceanbase is not empty