This causes each instance to automatically use a differentĭata directory, log files, and PID file because the default for each If you have multiple MySQL installations in different locations, youĬan specify the base directory for each installation with the Having different temporary directories also makes it easier toĭetermine which MySQL server created any given temporary file. Options must have different values for each server instance: ![]() In addition to using different data directories, several other Section 5.8.1, “Setting Up Multiple Data Directories”. For methods of configuring each instance with its own dataĭirectory, and warnings about the dangers of failing to do so, see Each instance should use a different data directory, the The primary resource managed by a MySQL instance is the dataĭirectory. Instance, connect to it and execute a SHOW Section 4.2.2, “Specifying Program Options”. Parameters can be set on the command line, in optionįiles, or by setting environment variables. This eliminates the potential for conflict between You run must be configured with unique values for several operating Whether or not you use distinct server binaries, each instance that Multiple instances of the current production version, each managing For example, you might run a server from MySQLĭifferent versions handle a given workload. Or use the same binary for multiple instances, or any combination of It is possible to use a different MySQL server binary per instance, Provide independent MySQL installations for different customers.) (ForĮxample, you might be an Internet Service Provider that wants to Mysqld servers that they manage themselves. To give different users access to different Leaving an existing production setup undisturbed. You might want to test a new MySQL release while In some cases, you might want to run multiple instances of MySQL onĪ single machine. 5.8.1 Setting Up Multiple Data Directories 5.8.2 Running Multiple MySQL Instances on Windows 5.8.3 Running Multiple MySQL Instances on Unix 5.8.4 Using Client Programs in a Multiple-Server Environment
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