一、本博文內容簡介：
有關mariaDB的介紹，大家可以移步到百度百科或者mariaDB官網進行查看。
本文主要是介紹mariaDB二進制包如何進行安裝，以及mariaDB服務安裝後的如何啓動以及賬戶安全設置等等
mariaDB截止2020-02-24日，目前發部的最新的二進制版本是mariadb-10.5.1-linux-glibc_214-x86_64.tar.gz。本文采用這個版本的二進制安裝。
二、二進制安裝mariadb：
官方二進制安裝文檔https://mariadb.com/kb/en/installing-mariadb-binary-tarballs/
下載地址
https://downloads.mariadb.com/MariaDB/mariadb-10.5/bintar-linux-glibc_214-x86_64/mariadb-10.5.1-linux-glibc_214-x86_64.tar.gz創建數據目錄：
useradd mysql -s /sbin/nologin -M
mkdir /data/mysql/mysql3306/{data,binlog,logs,tmp} -p
cd /data/mysql/;chown -R mysql.mysql mysql3306安裝相關依賴和下載解壓：
yum install libaio.x86_64 libaio-devel.x86_64 novacom-server.x86_64 libedit -y
cd /root/
wget https://downloads.mariadb.com/MariaDB/mariadb-10.5/bintar-linux-glibc_214-x86_64/mariadb-10.5.1-linux-glibc_214-x86_64.tar.gz
tar xf mariadb-10.5.1-linux-glibc_214-x86_64.tar.gz -C /usr/local/
cd /usr/local/;ln -sv xf mariadb-10.5.1-linux-glibc_214-x86_64.tar.gz mysql初始化命令：
cd /usr/local/mysql ;touch .my.cnf
./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/mysql3306/data --defaults-file=./.my.cnfmariaDB啓動：
啓動方式一： /usr/local/mysql/bin/mysqld_safe --defaults-file=/etc/my.cnf &
啓動方式二：cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql; chmod +x /etc/init.d/mysql; /etc/init.d/mysql start| service mysql start
啓動方式三：cp support-files/systemd/mariadb.service /usr/lib/systemd/system/mariadb.service; systemctl start mariadb重要提示：
安裝過程中採用的是mysql5.7.24的my.cnf配置文件(my.cnf配置文件參數會附在博文最後)
mariadb-10.5.1在初始化完成後啓動報錯，發現my.cnf配置文件中以下參數是不支持的：
[root@mgr01 logs]# grep 'unknown variable' error.log
2020-02-23 11:11:35 0 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'log_timestamps=system'
2020-02-23 11:15:17 0 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'slave-preserve-commit-order=ON'
2020-02-23 11:16:29 0 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'gtid_mode=on'
2020-02-23 11:17:11 0 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'enforce_gtid_consistency=on'
2020-02-23 11:17:30 0 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'binlog_group_commit_sync_delay=100'
2020-02-23 11:17:55 0 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'binlog_group_commit_sync_no_delay_count=10'
2020-02-24 5:06:41 0 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'slave_parallel_type=logical_clock'三、賬戶密碼設置、修改和找回：
安裝完成默認是沒密碼的
採用下面設置密碼：
ALTER USER 'root'@'localhost' IDENTIFIED BY '654321';採用下面方式修改MariaDB線上的賬戶的密碼:
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456');不支持下面的命令修改密碼：
update mysql.user set authentication_string=password('123456') where user='root' and host='localhost';
update mysql.user set password=password('123456') where user='root' and host='localhost';
alter user user() identified by 'xxxxx'忘記密碼如何找回呢？
本想的忽略授權表啓動服務來找回，但是均失敗，目前沒找到忘記密碼時找回密碼的方法
/usr/local/mysql/bin/mysqld_safe --skip-grant-tables
四、關於初始化的介紹：
4.1 初始化時要提前創建好.my.cnf文件
提示：初始化時要在/usr/local/mysql/ 目錄下創建一個空的影藏文件.my.cnf文件，否則會提示文件不存在，導致初始化失敗
Could not open required defaults file: /usr/local/mariadb-10.5.1-linux-glibc_214-x86_64/.my.cnf
Fatal error in defaults handling. Program aborted
Installing MariaDB/MySQL system tables in '/data/mysql/mysql3306/data' ...
Could not open required defaults file: /usr/local/mariadb-10.5.1-linux-glibc_214-x86_64/.my.cnf
Fatal error in defaults handling. Program aborted4.2初始化參數介紹
此處重點介紹初始化時的參數--auth-root-authentication-method
初始化參數--auth-root-authentication-method={normal | socket} 官方介紹：
If set to normal, it creates a root@localhost account that authenticates with the mysql_native_password authentication plugin and that has no initial password set, which can be insecure.
If set to socket, it creates a root@localhost account that authenticates with the unix_socket authentication plugin.
Set to socket by default from MariaDB 10.4 (see Authentication from MariaDB 10.4), or normal by default in earlier versions. Available since MariaDB 10.1.
官網地址：https://mariadb.com/kb/en/mysql_install_db/大意是：默認從MariaDB 10.4 之後初始化時採用的socket方式
--auth-root-authentication-method 這個參數是從MariaDB 10.1.開始引進的
初始化命令：
/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/mysql3306/data --auth-root-authentication-method=normal --defaults-file=./.my.cnf --auth-root-authentication-method=normal 採用這個參數初始化，初始化完成啓動服務後是允許下面命令來設置密碼，而且生效
/usr/local/mysql/bin/mysqladmin -u root password '654321'
也可採用下面的方式設置密碼和修改密碼：
ALTER USER 'root'@'localhost' IDENTIFIED BY '654321';
採用下面方式修改MariaDB線上的賬戶的密碼:
(root@'mgr01':mysql.sock)[(none)]>SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456');
Query OK, 0 rows affected (0.012 sec)
但是不支持下面的命令修改密碼：
update mysql.user set authentication_string=password('123456') where user='root' and host='localhost';
update mysql.user set password=password('123456') where user='root' and host='localhost';
alter user user() identified by 'xxxxx'初始化過程演示：
採用 --auth-root-authentication-method=norma進行初始化：
[root@mgr01 mysql]# ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/mysql3306/data --auth-root-authentication-method=normal --defaults-file=./.my.cnf
Installing MariaDB/MySQL system tables in '/data/mysql/mysql3306/data' ...
OK
To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system
PLEASE REMEMBER TO SET A PASSWORD FOR THE MariaDB root USER !
To do so, start the server, then issue the following commands:
'/usr/local/mysql/bin/mysqladmin' -u root password 'new-password'
'/usr/local/mysql/bin/mysqladmin' -u root -h mgr01 password 'new-password'
Alternatively you can run:
'/usr/local/mysql/bin/mysql_secure_installation'
which will also give you the option of removing the test
databases and anonymous user created by default. This is
strongly recommended for production servers.
See the MariaDB Knowledgebase at http://mariadb.com/kb or the
MySQL manual for more instructions.
You can start the MariaDB daemon with:
cd '/usr/local/mysql' ; /usr/local/mysql/bin/mysqld_safe --datadir='/data/mysql/mysql3306/data'
You can test the MariaDB daemon with mysql-test-run.pl
cd '/usr/local/mysql/mysql-test' ; perl mysql-test-run.pl
Please report any problems at http://mariadb.org/jira
The latest information about MariaDB is available at http://mariadb.org/.
You can find additional information about the MySQL part at:
http://dev.mysql.com
Consider joining MariaDB's strong and vibrant community:
https://mariadb.org/get-involved/採用參數--auth-root-authentication-method=socket 初始化：
./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/mysql3306/data --defaults-file=./.my.cnf
[root@mgr01 mysql]# ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql/mysql3306/data --auth-root-authentication-method=socket --defaults-file=./.my.cnf
Installing MariaDB/MySQL system tables in '/data/mysql/mysql3306/data' ...
OK
To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system
Two all-privilege accounts were created.
One is root@localhost, it has no password, but you need to
be system 'root' user to connect. Use, for example, sudo mysql
The second is mysql@localhost, it has no password either, but
you need to be the system 'mysql' user to connect.
After connecting you can set the password, if you would need to be
able to connect as any of these users with a password and without sudo
See the MariaDB Knowledgebase at http://mariadb.com/kb or the
MySQL manual for more instructions.
You can start the MariaDB daemon with:
cd '/usr/local/mysql' ; /usr/local/mysql/bin/mysqld_safe --datadir='/data/mysql/mysql3306/data'
You can test the MariaDB daemon with mysql-test-run.pl
cd '/usr/local/mysql/mysql-test' ; perl mysql-test-run.pl
Please report any problems at http://mariadb.org/jira
The latest information about MariaDB is available at http://mariadb.org/.
You can find additional information about the MySQL part at:
http://dev.mysql.com
Consider joining MariaDB's strong and vibrant community:
https://mariadb.org/get-involved/提示： 此次安裝的版本是10.5.1所以初始化不加參數--auth-root-authentication-method=socket 默認就是socket方式
採用這個參數初始化，初始化完成啓動服務後是允許下面命令修改密碼的，但是不生效
[root@mgr01 mysql]# /usr/local/mysql/bin/mysqladmin -u root password '654321'
必須採用下面的方式設置密碼和修改密碼：
ALTER USER 'root'@'localhost' IDENTIFIED BY '654321';
採用下面方式修改MariaDB線上的賬戶的密碼:
(root@'mgr01':mysql.sock)[(none)]>SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456');
Query OK, 0 rows affected (0.012 sec)
本博文二進制安裝mariaDB介紹完成，下面是此博文演示環境用到的/etc/my.cnf配置文件參數內容如下：
提示：MariaDB數據庫默認就開啓了Gtid複製的，配置文件中是沒有開啓gtid這個參數的。同時本配置文件添加了複製過濾參數
（一般主要是在從庫上開啓複製過濾參數），mariaDB也是支持複製過濾的
[root@mgr02 support-files]# egrep -v "^#|^$" /etc/my.cnf
[client]
port = 3306
[mysql]
auto-rehash
prompt="\\u@\\h [\\d]>"
[mysqld]
user =mysql # mysql
basedir =/usr/local/mysql/ # /usr/local/mysql/
datadir =/data/mysql/mysql3306/data # /usr/local/mysql/data
server_id =1323306 # 0
port =3306 # 3306
character_set_server =utf8 # latin1
explicit_defaults_for_timestamp =off # off
socket =/tmp/mysql.sock # /tmp/mysql.sock
read_only =0 # off
skip_name_resolve =1 # 0
auto_increment_increment =1 # 1
auto_increment_offset =1 # 1
lower_case_table_names =1 # 0
secure_file_priv = # null
open_files_limit =65536 # 1024
max_connections =1000 # 151
thread_cache_size =64 # 9
table_open_cache =81920 # 2000
table_definition_cache =4096 # 1400
table_open_cache_instances =64 # 16
max_prepared_stmt_count =1048576 #
binlog_format =row # row
log_bin =/data/mysql/mysql3306/binlog/mysql-bin # off
binlog_rows_query_log_events =on # off
log_slave_updates =on # off
expire_logs_days =7 # 0
binlog_cache_size =65536 # 65536(64k)
sync_binlog =1 # 1
log_error =/data/mysql/mysql3306/logs/error.log # /usr/local/mysql/data/localhost.localdomain.err
general_log =off # off
general_log_file =/data/mysql/mysql3306/logs/general.log # hostname.log
slow_query_log =on # off
slow_query_log_file =/data/mysql/mysql3306/logs/slow.log # hostname.log
long_query_time =1.000000 # 10.000000
skip_slave_start =1 #
slave_parallel_workers =4 # 0
rpl_semi_sync_master_enabled =OFF
rpl_semi_sync_slave_enabled =ON
rpl_semi_sync_master_wait_no_slave =ON
rpl_semi_sync_master_timeout =1000000000000000000
default_storage_engine =innodb # innodb
default_tmp_storage_engine =innodb # innodb
innodb_data_file_path =ibdata1:12M:autoextend # ibdata1:12M:autoextend##線上給1024M
innodb_temp_data_file_path =ibtmp1:12M:autoextend # ibtmp1:12M:autoextend
innodb_buffer_pool_filename =ib_buffer_pool # ib_buffer_pool
innodb_log_group_home_dir =/data/mysql/mysql3306/data # ./
innodb_log_files_in_group =4 # 2##線上給4
innodb_log_file_size =100M # 50331648(48M)###線上給1024M
innodb_file_per_table =on # on
innodb_online_alter_log_max_size =128M # 134217728(128M)
innodb_open_files =65535 # 2000
innodb_page_size =16k # 16384(16k)
innodb_thread_concurrency =0 # 0
innodb_read_io_threads =4 # 4
innodb_write_io_threads =4 # 4
innodb_purge_threads =4 # 4(垃圾回收)
innodb_page_cleaners =4 # 4(刷新lru髒頁)
innodb_print_all_deadlocks =on # off
innodb_deadlock_detect =on # on
innodb_lock_wait_timeout =20 # 50
innodb_spin_wait_delay =128 # 6
innodb_autoinc_lock_mode =2 # 1
innodb_io_capacity =200 # 200##sas盤iops 在145
innodb_io_capacity_max =2000 # 2000
innodb_stats_auto_recalc =on # on
innodb_stats_persistent =on # on
innodb_stats_persistent_sample_pages =20 # 20
innodb_adaptive_hash_index =on # on
innodb_change_buffering =all # all
innodb_change_buffer_max_size =25 # 25
innodb_flush_neighbors =1 # 1
innodb_doublewrite =on # on
innodb_log_buffer_size =128M # 16777216(16M)
innodb_flush_log_at_timeout =1 # 1
innodb_flush_log_at_trx_commit =1 # 1
innodb_buffer_pool_size =500M # 134217728(128M)##線上給物理內存的50%-80%
innodb_buffer_pool_instances =4
autocommit =1 # 1
innodb_old_blocks_pct =37 # 37
innodb_old_blocks_time =1000 # 1000
innodb_read_ahead_threshold =56 # 56 (0..64)
innodb_random_read_ahead =OFF # OFF
innodb_buffer_pool_dump_pct =25 # 25
innodb_buffer_pool_dump_at_shutdown =ON # ON
innodb_buffer_pool_load_at_startup =ON # ON
replicate_wild_do_table=test.%
replicate_wild_ignore_table=information_schema.%
replicate_wild_ignore_table=performance_schema.%
replicate_wild_ignore_table=mysql.%
replicate_wild_ignore_table=orchestrator.%
sql-mode="NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
performance_schema =off # on
performance_schema_consumer_global_instrumentation =on # on
performance_schema_consumer_thread_instrumentation =on # on
performance_schema_consumer_events_stages_current =on # off
performance_schema_consumer_events_stages_history =on # off
performance_schema_consumer_events_stages_history_long =off # off
performance_schema_consumer_statements_digest =on # on
performance_schema_consumer_events_statements_current =on # on
performance_schema_consumer_events_statements_history =on # on
performance_schema_consumer_events_statements_history_long =on # off
performance_schema_consumer_events_waits_current =on # off
performance_schema_consumer_events_waits_history =on # off
performance_schema_consumer_events_waits_history_long =off # off
performance-schema-instrument ='memory/%=COUNTED'
[root@mgr02 support-files]#