databaseのバッグアップを取ろうとして一旦sqlファイルに落とそうとしたら、MySQLから次のようなエラーが出ました。 $ mysqldump -uroot -p hogehoge >hogehoge.sql Enter password: mysqldump: Couldn't execute 'SHOW VARIABLES LIKE 'gtid\_mode'': Table 'performance_schema.session_variables' doesn't exist (1146) $ mysql_upgrade -u root -p Enter password: Checking if update is needed. Checking server version. Running queries to upgrade MySQL server. Checkin
![MySQL ver5.7でmysqldumpしようとしてエラーが出たときの対処法 - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/01b6f9822393211d4fd617eaf1bb131a4fbf3056/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9TXlTUUwlMjB2ZXI1LjclRTMlODElQTdteXNxbGR1bXAlRTMlODElOTclRTMlODIlODglRTMlODElODYlRTMlODElQTglRTMlODElOTclRTMlODElQTYlRTMlODIlQTglRTMlODMlQTklRTMlODMlQkMlRTMlODElOEMlRTUlODclQkElRTMlODElOUYlRTMlODElQTglRTMlODElOEQlRTMlODElQUUlRTUlQUYlQkUlRTUlODclQTYlRTYlQjMlOTUmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT01NiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPWZlYTA0ZGI0MWZjMGZkYTNkNzNiMmU5MWFmM2E1N2I4%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBvZ3JldyZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTM2JnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnM9NGU4NmNmYTIyNGY3NWE5MGU5NmU0M2E1MzNjMDgxNDU%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3D9837b024a620d44cc875adde8b3d9595)