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• GreatSQL是MySQL的国产分支版本，使用上与MySQL一致。

一、系统信息

部署前提：准备一个干净的系统，确认先前没有安装过MySQL、Mariadb等相关服务，造成不必要的冲突。

1.确认OS信息

[root@mgr1 opt]# cat /etc/redhat-release
CentOS Linux release 7.5.1804 (Core)

[root@mgr1 opt]# uname -r
3.10.0-862.el7.x86_64

2.OS优化调整

其他一些OS调整这里不涉及，跳过。

3.临时关闭 firewall 和 selinux

systemctl stop firewalld.service
setenforce 0

二、rpm安装

1.下载安装包

将这4个文件下载并上传到 /opt 目录

• greatsql-client-8.0.25-16.1.el7.x86_64.rpm
• greatsql-devel-8.0.25-16.1.el7.x86_64.rpm
• greatsql-server-8.0.25-16.1.el7.x86_64.rpm
• greatsql-shared-8.0.25-16.1.el7.x86_64.rpm

下载地址：https://gitee.com/GreatSQL/GreatSQL/releases/GreatSQL-8.0.25-16

2.安装依赖包

yum install openssl-devel net-tools perl-devel -y

3.依次安装下列软件包

rpm -ivh greatsql-shared-8.0.25-16.1.el7.x86_64.rpm
rpm -ivh greatsql-client-8.0.25-16.1.el7.x86_64.rpm
rpm -ivh greatsql-server-8.0.25-16.1.el7.x86_64.rpm
rpm -ivh greatsql-devel-8.0.25-16.1.el7.x86_64.rpm

安装过程 greatsql-server-8.0.25-16.1.el7.x86_64.rpm 如果出现如下报错

file /etc/my.cnf from install of greatsql-server-8.0.25-16.1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.56-2.el7.x86_64

file /usr/lib64/mysql/plugin/dialog.so from install of greatsql-server-8.0.25-16.1.el7.x86_64 conflicts with file from package mariadb-libs-1:5.5.56-2.el7.x86_64

则先卸载mariadb-libs，然后再执行

yum remove mariadb-libs -y

执行 rpm -qa|grep greatsql 确认下都装上了

greatsql-shared-8.0.25-16.1.el7.x86_64
greatsql-server-8.0.25-16.1.el7.x86_64
greatsql-client-8.0.25-16.1.el7.x86_64
greatsql-devel-8.0.25-16.1.el7.x86_64

4.替换配置文件

备份下原来的/etc/my.cnf文件

mv /etc/my.cnf /etc/my.cnf.`date +"%F"`

添加配置文件，直接复制到窗口执行即可。

以下配置在2核2G内存正常运行，根据硬件情况自己微调。

echo '
#my.cnf
[client]
socket = /data/GreatSQL/mysql.sock
[mysql]
loose-skip-binary-as-hex
prompt="(\\D)[\\u@GreatSQL][\\d]>"
no-auto-rehash
[mysqld]
user    = mysql
port    = 3306
server_id = 3306213
basedir = /usr
datadir    = /data/GreatSQL
socket    = /data/GreatSQL/mysql.sock
pid-file = mysql.pid
character-set-server = UTF8MB4
skip_name_resolve = 1

#若你的MySQL数据库主要运行在境外，请务必根据实际情况调整本参数
default_time_zone = "+8:00"

#performance setttings
lock_wait_timeout = 3600
open_files_limit    = 65535
back_log = 1024
max_connections = 512
max_connect_errors = 1000000
table_open_cache = 1024
table_definition_cache = 1024
thread_stack = 512K
sort_buffer_size = 4M
join_buffer_size = 4M
read_buffer_size = 8M
read_rnd_buffer_size = 4M
bulk_insert_buffer_size = 64M
thread_cache_size = 768
interactive_timeout = 600
wait_timeout = 600
tmp_table_size = 32M
max_heap_table_size = 32M

#log settings
log_timestamps = SYSTEM
log_error = /data/GreatSQL/error.log
log_error_verbosity = 3
slow_query_log = 1
log_slow_extra = 1
slow_query_log_file = /data/GreatSQL/slow.log
long_query_time = 0.1
log_queries_not_using_indexes = 1
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 100
log_slow_admin_statements = 1
log_slow_slave_statements = 1
log_bin = /data/GreatSQL/binlog
binlog_format = ROW
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 2G
max_binlog_size = 1G
binlog_rows_query_log_events = 1
binlog_expire_logs_seconds = 604800
#MySQL 8.0.22前，想启用MGR的话，需要设置binlog_checksum=NONE才行
binlog_checksum = CRC32
gtid_mode = ON
enforce_gtid_consistency = TRUE

#myisam settings
key_buffer_size = 32M
myisam_sort_buffer_size = 128M

#replication settings
#master_info_repository = TABLE
#relay_log_info_repository = TABLE
relay_log_recovery = 1
slave_parallel_type = LOGICAL_CLOCK

#可以设置为逻辑CPU数量的2倍
slave_parallel_workers = 64
binlog_transaction_dependency_tracking = WRITESET
slave_preserve_commit_order = 1
slave_checkpoint_period = 2

#innodb settings
transaction_isolation = REPEATABLE-READ
innodb_buffer_pool_size = 256M
innodb_buffer_pool_instances = 8
innodb_data_file_path = ibdata1:12M:autoextend
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 32M
#innodb_log_file_size = 48M
#innodb_log_files_in_group = 3
innodb_doublewrite_files = 2
innodb_max_undo_log_size = 4G

# 根据您的服务器IOPS能力适当调整
# 一般配普通SSD盘的话，可以调整到 10000 - 20000
# 配置高端PCIe SSD卡的话，则可以调整的更高，比如 50000 - 80000
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_open_files = 65534
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_online_alter_log_max_size = 4G
innodb_print_ddl_logs = 1
innodb_status_file = 1

#注意: 开启 innodb_status_output & innodb_status_output_locks 后, 可能会导致log_error文件增长较快
innodb_status_output = 0
innodb_status_output_locks = 1
innodb_sort_buffer_size = 67108864

#innodb monitor settings
innodb_monitor_enable = "module_innodb"
innodb_monitor_enable = "module_server"
innodb_monitor_enable = "module_dml"
innodb_monitor_enable = "module_ddl"
innodb_monitor_enable = "module_trx"
innodb_monitor_enable = "module_os"
innodb_monitor_enable = "module_purge"
innodb_monitor_enable = "module_log"
innodb_monitor_enable = "module_lock"
innodb_monitor_enable = "module_buffer"
innodb_monitor_enable = "module_index"
innodb_monitor_enable = "module_ibuf_system"
innodb_monitor_enable = "module_buffer_page"
innodb_monitor_enable = "module_adaptive_hash"

#pfs settings
performance_schema = 1
#performance_schema_instrument = '%memory%=on'
performance_schema_instrument = '%lock%=on'
' > /etc/my.cnf

5.创建数据目录

mkdir -p /data/GreatSQL
chown mysql.mysql /data/GreatSQL

6.启动服务

rpm安装会自动生成一个mysqld.service的启动服务，并设置为开机自启动，所以我们直接开启服务即可。

如果是第一次开启，mysqld.service服务会调用/usr/bin/mysqld_pre_systemd脚本进行数据初始化操作，此过程时间较长，请耐心等待！

systemctl start mysqld.service

如果开启过程出现

Job for mysqld.service failed because the control process exited with error code. See “systemctl status mysqld.service” and “journalctl -xe” for details.

执行 journalctl -xe 发现以下内容，确认下相关的/data/GreatSQL/error.log文件存在且配置权限正常，可以尝试关闭selinux再进行开启

......
[ERROR] [MY-010338] [Server] Can't find error-message file '/usr/local/GreatSQL-8.0.25-15-Linux-glibc2.17-x86_64/s
[Warning] [MY-010091] [Server] Can't create test file /data/GreatSQL/mysqld_tmp_file_case_insensitive_test.lower-t
[Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /data/GreatSQL/ is case in
[ERROR] [MY-010187] [Server] Could not open file '/data/GreatSQL/error.log' for error logging: Permission denied
......

7.查看开启状态

启动服务后，查看下服务启动状态，关键字active (running)

[root@localhost GreatSQL]# systemctl status mysqld.service
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2022-05-17 05:13:09 EDT; 50s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 32417 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 32506 (mysqld)
   Status: "Server is operational"
   CGroup: /system.slice/mysqld.service
           └─32506 /usr/sbin/mysqld

8.启动后查看初始化的密码

记录下输出的初始化密码，稍后改密需要用到

cat /data/GreatSQL/error.log |grep 'root@localhost'|awk '{print $NF}'

9.设置下root密码

# 1.使用初始化的密码登陆
mysql -p -uroot -S /data/GreatSQL/mysql.sock

# 2.设置修改密码，把 GreatSQL.2022! 改成你需要设置的密码
[root@GreatSQL][(none)]> set password for root@'localhost'='GreatSQL.2022!';
[root@GreatSQL][(none)]> flush privileges;
[root@GreatSQL][(none)]> quit

# 3.新密码登陆下
mysql -uroot -p -S /data/GreatSQL/mysql.sock

10.查看下版本

[root@GreatSQL][(none)]>status
--------------
Server version:    8.0.25-16 GreatSQL (GPL), Release 16, Revision 8bb0e5af297

11.总结

以上就是使用rpm方式安装完成一个单机的GreatSQL，实际环境要根据硬件、系统等配置进行微调，不可直接用于生产。

END

Enjoy GreatSQL 😃