MySQL containerization (1) docker installation MySQL

1. Containerized MySQL The problem of

docker The container actually adds a read-write layer based on the image , When the container is deleted , The data state maintained by the container will be lost , about MySQL Such persistent data storage is catastrophic , At this time, the data persistence of the container is very necessary .

2. How to achieve persistence

In the last blog Docker Persistence It has been introduced in detail in , Readers can refer to .

3.MySQL Data source file for

Mysql Data files are generally stored in by default /var/lib/myql Next , The folders correspond to each database

# Among them wordpress The folder is my name wordpress Corresponding database 
[email protected]:/var/lib/mysql# cd /var/lib/mysql && ls
auto.cnf         client-key.pem  ibdata1             private_key.pem  sys
ca-key.pem       ib_buffer_pool  ibtmp1              public_key.pem   wordpress
ca.pem           ib_logfile0     mysql               server-cert.pem
client-cert.pem  ib_logfile1     performance_schema  server-key.pem

Access to database

[email protected]:/var/lib/mysql# cd wordpress/ && ls
db.opt              wp_options.frm             wp_term_relationships.ibd  wp_usermeta.frm
wp_commentmeta.frm  wp_options.ibd             wp_term_taxonomy.frm       wp_usermeta.ibd
wp_commentmeta.ibd  wp_postmeta.frm            wp_term_taxonomy.ibd       wp_users.frm
wp_comments.frm     wp_postmeta.ibd            wp_termmeta.frm            wp_users.ibd
wp_comments.ibd     wp_posts.frm               wp_termmeta.ibd
wp_links.frm        wp_posts.ibd               wp_terms.frm
wp_links.ibd        wp_term_relationships.frm  wp_terms.ibd
[email protected]:/var/lib/mysql/wordpress# 

Among them .frm The file is a table structure file .
Among them .ibd The file is a table data file .

4. adopt volume Realize database data persistence

• establish mysql Data volume
• establish mysql configure volumes （ Turn on binlog etc. ）
• establish mysql Journal volume （ produce mysql journal ）

docker volume create mysql-data \
docker volume create mysql-config \
docker volume create mysql-log 

docker run -d -p 3306:3306 \
	 --name mysql \
	 -v mysql-data:/var/lib/mysql \
	 -v mysql-config:/etc/mysql/conf.d \
	 -v mysql-log:/var/log/mysql \
	 -e MYSQL_ROOT_PASSWORD=131452 \
	 mysql:5.7

Be careful ： About Docker Persistent reference post