![]() ![]() This is unchanged except for the addition of ` -socket=/tmp/mysql.sock`. mount type=bind,src=C:\Users\david\userauth-data,dst=/var/lib/mysql \ env MYSQL_USER=userauth -env MYSQL_PASSWORD=userauth \ Indeed, we can modify the above command to this: PS C:\Users\david> docker run -name db-userauth \ Use the -socket option to change the location of the MySQL Unix domain socket. #Docker unix domain socket windows#This is because the way Docker for Windows handles file mounting does not allow a host file from being bind-mounted on the socket file. If you are bind-mounting on the container's MySQL data directory (see Persisting Data and Configuration Changes for details), you have to set the location of the server socket file with the -socket option to somewhere outside of the MySQL data directory otherwise, the server will fail to start. ![]() Out-of-the-way easy-to-miss page saying this: ![]() As I said earlier, it's so that we can treat the data directory as an immortal thing as we delete/recreate the database container for service or upgrades. The idea is to mount a host directory into the database container. It includes this option: -mount type=bind,src= /path/to /userauth-data,dst=/var /lib/mysql If the purpose for using a Unix domain socket is security, then shouldn't it be kept safely hidden inside the container? Or maybe the idea is that closely allied Docker containers can use this socket and avoid exposing the MySQL service on a TCP/IP socket? I am not understanding why the MySQL team is putting the socket into /var/lib/mysql when it is deployed as a Docker container. One common security measure is to turn off its TCP/IP socket and rely solely on the Unix domain socket.Ī common default place for this socket is /var/run/mysqld/mysql.sock. MySQL has traditionally used a Unix domain socket for local communication to the database engine. The advantage is speed, and the fact that the Unix domain socket is not exposed over the network. #Docker unix domain socket software#It acts like a TCP/IP socket, in that software can connect to it and communicate. an endpoint for communication, that exists solely within a Unix (or macOS or Linux or FreeBSD) system. The problem is that the mysql.sock file got put into /var/lib/mysql, which is mounted into a Windows host system directory that does not support Unix domain sockets. The generic error messages printed here will mislead you. The problem in this case is not about another MySQL daemon. Pondering that might help you avoid wasting time on irrevelant issues because most of the advice regarding this error message involves detecting the other MySQL daemon on the host. The thing to note is the pathname, /var/lib/mysql/mysql.sock. No, there isn't another MySQL server running, etc. But this should otherwise work unchanged between macOS, Linux, and Windows. mount type=bind,src=`pwd`/userauth-data,dst=/var/lib/mysql \įor Windows the src= to the -mount option needs to be a little different, such as a hard-coded pathname. That way we can destroy and recreate the container at will, and the data directory will live on.įor example in my book, Node.js Web Development, I recommend this: docker run -name db-userauth \ Therefore, when we launch a Docker container for a database it is required to mount the database data directory from the host file system. Because databases are eternal and containers are ephemeral. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |