问题
I want to create mysql dumps for a database which is running in docker container. However I do not want to get into the container and execute the command but do it from the host machine. Is there a way to do it. I tried few things but probably I am wrong with the commands.
docker exec -d mysql sh mysqldump -uroot -pSomePassword DBName > /dumps/MyNewDump.sql
docker exec -d mysql sh $(mysqldump -uroot -pSomePassword DBName > /dumps/MyNewDump.sql)
docker exec -d mysql mysqldump -uroot -pSomePassword DBName > /dumps/MyNewDump.sql
the dumps directory is already bind to the host machine.
These commands are seems not the right way to do it or probably not the right way to do it at all. These always ends up with an error:
bash: /dumps/MyNewDump.sql: No such file or directory
But if I just run mysqldump -uroot -pSomePassword DBName > /dumps/MyNewDump.sql inside the container it works fine.
回答1:
This worked on my end(just replace the container ID):
docker exec 1d3595c0ce87 sh -c 'mysqldump -uroot -pSomePassword DBName > /dumps/MyNewDump.sql'
mysqldump: [Warning] Using a password on the command line interface can be insecure.
回答2:
mysqldump takes the usual MySQL CLI options to connect to a server running somewhere else. That means you can run it directly from the host, without needing docker exec (administrator) permissions.
mysqldump -h127.0.0.1 -uroot -pSomePassword DBName > MyNewDump.sql
In contrast to the docker exec forms, this creates the dump file on the host, but that's probably what you want.
来源：https://stackoverflow.com/questions/63740465/how-to-execute-mysqldump-command-from-the-host-machine-to-a-mysql-docker-contain