RPM安装

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本节介绍如何用 RPM 包方式安装 GreatSQL 数据库，假定本次安装是在 CentOS 8.x x86_64 环境中安装，并且是以 root 用户身份执行安装操作。

下载安装包

点击此处 (opens new window)下载最新的安装包，至少下载以下几个RPM包文件：

• greatsql-client-8.0.32-26.1.el8.x86_64.rpm
• greatsql-devel-8.0.32-26.1.el8.x86_64.rpm
• greatsql-icu-data-files-8.0.32-26.1.el8.x86_64.rpm
• greatsql-shared-8.0.32-26.1.el8.x86_64.rpm
• greatsql-server-8.0.32-26.1.el8.x86_64.rpm

提示：建议直接下载RPM集中打包文件，例如 greatsql-8.0.32-26.1.el8.x86_64.rpm-bundle.tar.xz，就无需每个文件单独下载了。

运行环境配置

关闭selinux和防火墙

#关闭selinux
$ setenforce=0
$ sed -i '/^SELINUX=/c'SELINUX=disabled /etc/selinux/config

#关闭防火墙
$ systemctl disable firewalld
$ systemctl stop firewalld
$ systemctl disable iptables
$ systemctl stop iptables

另外，要先确认yum源可用，因为安装GreatSQL时还要先安装其他依赖包，通过yum安装最省事。

如果需要配置yum源，可以参考配置阿里云YUM源 (opens new window)。

安装依赖包

安装GreatSQL RPM包时，要先安装这些相关依赖包。

$ yum install -y pkg-config perl libaio-devel numactl-devel numactl-libs net-tools \
  openssl openssl-devel jemalloc jemalloc-devel perl-Data-Dumper perl-Digest-MD5 \
  python2 perl-JSON perl-Test-Simple

如果报告个别依赖包安装失败或者找不到就删掉，然后重试。更详细的请参考：安装准备。

安装RPM包

执行下面的命令安装PRM包，如果一切顺利的话，相应的过程如下所示：

$ rpm -ivh --nodeps greatsql*rpm
Verifying...                          ################################# [100%]
Preparing...                          ################################# [100%]
Updating / installing...
   1:greatsql-shared-8.0.32-26.1.el8  ################################# [ 20%]
   2:greatsql-client-8.0.32-26.1.el8  ################################# [ 40%]
   3:greatsql-icu-data-files-8.0.32-26################################# [ 60%]
   4:greatsql-server-8.0.32-26.1.el8  ################################# [ 80%]
   5:greatsql-devel-8.0.32-26.1.el8   ################################# [100%]

安装 GreatSQL RPM 包的时候，可能会报告类似下面的依赖包错误提示，

$ rpm -ivh greatsql*rpm
error: Failed dependencies:
        perl(Lmo) is needed by greatsql-server-8.0.32-26.1.el8.x86_64
        perl(Lmo::Meta) is needed by greatsql-server-8.0.32-26.1.el8.x86_64
        perl(Lmo::Object) is needed by greatsql-server-8.0.32-26.1.el8.x86_64
        perl(Lmo::Types) is needed by greatsql-server-8.0.32-26.1.el8.x86_64
        perl(Lmo::Utils) is needed by greatsql-server-8.0.32-26.1.el8.x86_64
        perl(Percona::Toolkit) is needed by greatsql-server-8.0.32-26.1.el8.x86_64
        perl(Quoter) is needed by greatsql-server-8.0.32-26.1.el8.x86_64
        perl(Transformers) is needed by greatsql-server-8.0.32-26.1.el8.x86_64

上述这些依赖包可以先忽略，不影响 GreatSQL 正常使用。这时可以加上 --nodeps --force 强制忽略即可，例如：

$ rpm -ivh --nodeps --force greatsql*rpm
Preparing...                          ################################# [100%]
Updating / installing...
   1:greatsql-shared-8.0.32-26.1.el8  ################################# [ 20%]
   2:greatsql-client-8.0.32-26.1.el8  ################################# [ 40%]
   3:greatsql-icu-data-files-8.0.32-26################################# [ 60%]
   4:greatsql-server-8.0.32-26.1.el8  ################################# [ 80%]
   5:greatsql-devel-8.0.32-26.1.el8   ################################# [100%]

启动GreatSQL

启动GreatSQL服务前，先修改systemd文件，调高一些limit上限，避免出现文件数、线程数不够用的告警。

编辑/创建 /lib/systemd/system/mysqld.service 文件：

$ vim /lib/systemd/system/mysqld.service

在 [Service] 区间增加下面几行内容：

[Unit]
Description=GreatSQL Server
Documentation=https://greatsql.cn/docs/
After=network.target
After=syslog.target

[Install]
WantedBy=multi-user.target

[Service]
User=mysql
Group=mysql
Type=notify
TimeoutSec=0
PermissionsStartOnly=true

ExecStartPre=/usr/local/GreatSQL-8.0.32-26-Linux-glibc2.28-x86_64/bin/mysqld_pre_systemd
ExecStart=/usr/local/GreatSQL-8.0.32-26-Linux-glibc2.28-x86_64/bin/mysqld --defaults-file=/etc/my.cnf $MYSQLD_OPTS
EnvironmentFile=-/etc/sysconfig/mysql
Restart=on-failure
RestartPreventExitStatus=1
Environment=MYSQLD_PARENT_PID=1
PrivateTmp=false

# some limits
# file size
LimitFSIZE=infinity
# cpu time
LimitCPU=infinity
# virtual memory size
LimitAS=infinity
# open files
LimitNOFILE=65535
# processes/threads
LimitNPROC=65535
# locked memory
LimitMEMLOCK=infinity
# total threads (user+kernel)
TasksMax=infinity
TasksAccounting=false

保存退出，然后重载 systemd，如果没问题就不会报错：

$ systemctl daemon-reload

执行下面的命令启动GreatSQL服务

$ systemctl start mysqld

检查服务是否已启动，以及进程状态：

$ systemctl status mysqld
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2024-07-06 10:35:57 CST; 42s ago
     Docs: https://greatsql.cn/docs
  Process: 43570 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 43653 (mysqld)
   Status: "Server is operational"
    Tasks: 39 (limit: 149064)
   Memory: 446.4M
   CGroup: /system.slice/mysqld.service
           └─43653 /usr/sbin/mysqld
...

$ ps -ef | grep mysqld
mysql      43653       1  3 10:35 ?        00:00:02 /usr/sbin/mysqld

$ ss -lntp | grep mysqld
LISTEN 0      70                 *:33060            *:*    users:(("mysqld",pid=43653,fd=23))
LISTEN 0      128                *:3306             *:*    users:(("mysqld",pid=43653,fd=26))

# 查看数据库文件
$ ls /var/lib/mysql
 auto.cnf        ca-key.pem        client-key.pem  '#ib_16384_0.dblwr'   ibdata1         mysql                private_key.pem   server-key.pem   undo_001
 binlog.000001   ca.pem           '#file_purge'    '#ib_16384_1.dblwr'  '#innodb_redo'   mysql.ibd            public_key.pem    sys              undo_002
 binlog.index    client-cert.pem   greatsql         ib_buffer_pool      '#innodb_temp'   performance_schema   server-cert.pem   sys_audit

可以看到，GreatSQL 服务已经正常启动了。

连接登入 GreatSQL

RPM 方式安装 GreatSQL 后，会随机生成管理员 root 的密码，通过搜索日志文件获取：

$ grep -i root /var/log/mysqld.log
[Note] [MY-010454] [Server] A temporary password is generated for root@localhost: K<f9Iapd#wwp

可以看到，root 账户的密码是："K<f9Iapd#wwp" (不包含双引号)，复制到粘贴板里。

首次登入 GreatSQL 后，要立即修改 root 密码，否则无法执行其他操作，并且新密码要符合一定安全规则：

$ mysql -uroot -p
Enter password:     #<--这个地方粘贴上面复制的随机密码
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.32-26 GreatSQL, Release 26, Revision 444164cc78e

Copyright (c) 2021-2023 GreatDB Software Co., Ltd
Copyright (c) 2009-2021 Percona LLC and/or its affiliates
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
...
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

greatsql> \s   #<--想执行一个命令，提示要先修改密码
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

greatsql> ALTER USER USER() IDENTIFIED BY 'GreatSQL@202X';  #<--修改密码
Query OK, 0 rows affected (0.02 sec)

greatsql> \s   #<--就可以正常执行其他命令了
--------------
mysql  Ver 8.0.32-26 for Linux on x86_64 (GreatSQL, Release 26, Revision 444164cc78e)

Connection id:          11
Current database:
Current user:           root@localhost
SSL:                    Not in use
Current pager:          stdout
Using outfile:          ''
Using delimiter:        ;
Server version:         8.0.32-26 GreatSQL, Release 26, Revision 444164cc78e
Protocol version:       10
Connection:             Localhost via UNIX socket
Server characterset:    utf8mb4
Db     characterset:    utf8mb4
Client characterset:    utf8mb4
Conn.  characterset:    utf8mb4
UNIX socket:            /var/lib/mysql/mysql.sock
Binary data as:         Hexadecimal
Uptime:                 10 min 14 sec

Threads: 2  Questions: 7  Slow queries: 0  Opens: 130  Flush tables: 3  Open tables: 46  Queries per second avg: 0.005
--------------

greatsql> SHOW DATABASES;  #<--查看数据库列表
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.01 sec)

greatsql>

关闭/重启 GreatSQL

执行下面的命令关闭 GreatSQL 数据库。

$ systemctl stop mysqld

执行下面的命令重启 GreatSQL 数据库。

$ systemctl restart mysqld

至此，RPM 包方式安装 GreatSQL 数据库完成。

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