【Docker】【MySQL】ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)解消法

状況

docker compose run db bashを実行したところ以下のようにエラーが発生しました。

ターミナル

＄　docker compose run db bash
docker compose run db bash
bash-4.4$  mysql -u root -p
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

解消法

以下の手順で実行することで解消できました。

ターミナル

$ docker compose up -d
[+] Running 3/3
 ⠿ Container rails-gitlint-test2-db-1   Healthy                                                       4.6s
 ⠿ Container rails-gitlint-test2-api-1  Started                                                       5.1s
 ⠿ Container rails-gitlint-test2-web-1  Started                                                       5.4s

$ docker compose exec db bash
bash-4.4$ mysql -u root -p
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 44
Server version: 8.0.29 MySQL Community Server - GPL

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

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