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      • Percona Server for MySQL 8.0.32-24 (2023-03-20)
      • Percona Server for MySQL 8.0.31-23 (2023-02-09)
        • Percona Server for MySQL 8.0.30-22 Update (2022-11-21)
        • Percona Server for MySQL 8.0.30-22 (2022-11-21)
        • Percona Server for MySQL 8.0.29-21 (2022-08-08)
        • Percona Server for MySQL 8.0.28-20 (2022-06-20)
        • Percona Server for MySQL 8.0.28-19 (2022-05-12)
        • Percona Server for MySQL 8.0.27-18 (2022-03-02)
        • Percona Server for MySQL 8.0.26-17 (2022-01-26)
        • Percona Server for MySQL 8.0.26-16 (2021-10-20)
        • Percona Server for MySQL 8.0.25-15 (2021-07-13)
        • Percona Server for MySQL 8.0.23-14 (2021-05-12)
        • Percona Server for MySQL 8.0.22-13 (2020-12-14)
        • Percona Server for MySQL 8.0.21-12 (2020-10-13)
        • Percona Server for MySQL 8.0.20-11 (2020-07-21)
        • Percona Server for MySQL 8.0.19-10 (2020-03-23)
        • Percona Server for MySQL 8.0.18-9
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        • Percona Server for MySQL 8.0.15-5
        • Percona Server for MySQL 8.0.14
        • Percona Server for MySQL 8.0.13-4
        • Percona Server for MySQL 8.0.13-3
        • Percona Server for MySQL 8.0.12-2rc1
      • Limiting the disk space used by binary log files
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      • Extended SELECT INTO OUTFILE/DUMPFILE
      • Support for PROXY protocol
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      • Expanded fast index creation
      • Kill idle transactions
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      • Quickstart overview
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        • Compile Percona Server for MySQL 8.0 from source
        • Install using Docker
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      • Upgrade guide
      • Upgrade using the Percona repositories
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      • Binary logs and replication improvements
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      • Working with AppArmor
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      • Extended SHOW GRANTS
        • Backup locks
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        • Start transaction with consistent snapshot
        • Using LDAP authentication plugins
        • LDAP authentication plugin system variables
      • Data masking
      • PAM authentication plugin
      • SSL improvements
      • Server variables
      • FIDO authentication plugin
      • Encryption functions
        • Data at Rest Encryption
        • Use the keyring component or keyring plugin
          • Using the Key Management Interoperability Protocol (KMIP)
          • Use the Amazon Key Management Service (AWS KMS)
          • Encrypt File-Per-Table Tablespace
          • Encrypt schema or general tablespace
          • Encrypt system tablespace
          • Encrypt temporary files
          • Encrypt Binary Log Files and Relay Log Files
          • Encrypting the Redo Log data
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          • Advanced encryption key rotation
          • Encrypt doublewrite buffers
          • Verify the encryption for tables, tablespaces, and schemas
      • Manage group replication flow control
      • Group replication system variables
      • Audit log plugin
      • Jemalloc memory allocation profiling
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      • Process list
      • Misc. INFORMATION_SCHEMA tables
      • Use Percona Monitoring and Management (PMM) Advisors
      • Too many connections warning
      • Handle corrupted tables
      • Thread based profiling
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      • Libcoredumper
        • The Percona XtraDB storage engine
        • Improved MEMORY storage engine
        • Improved InnoDB I/O scalability
        • Enforcing storage engine
        • Extended show engine InnoDB status
        • Show storage engines
        • Compressed columns with dictionaries
        • InnoDB full-text search improvements
        • XtraDB changed page tracking
        • XtraDB performance improvements for I/O-bound highly-concurrent workloads
        • Multiple page asynchronous I/O requests
        • Prefix index queries optimization
        • Limit the estimation of records in a Query
        • InnoDB page fragmentation counters
        • Percona MyRocks introduction
        • Percona MyRocks installation guide
        • Updated supported features
        • MyRocks limitations
        • Differences between Percona MyRocks and Facebook MyRocks
        • MyRocks Information Schema tables
        • MyRocks server variables
        • MyRocks status variables
        • Gap locks detection
        • Data loading
        • Installing and configuring Percona Server for MySQL with ZenFS support
        • TokuDB introduction
        • TokuDB installation
        • Use TokuDB
        • Fast updates with TokuDB
        • TokuDB files and file types
        • TokuDB file management
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        • TokuDB Performance Schema integration
        • Frequently asked questions
        • Migrate and removing the TokuDB storage engine
        • Percona TokuBackup
      • List of variables introduced in Percona Server for MySQL 8.0
      • List of features available in Percona Server for MySQL releases
      • Percona Server for MySQL feature comparison
      • Understand version numbers
      • Development of Percona Server for MySQL
      • Trademark policy
      • Index of INFORMATION_SCHEMA tables
      • Frequently asked questions
      • Copyright and licensing information
      • Glossary

    Docker environment variables¶

    When running a Docker container with Percona Server, you can adjust the configuration of the instance Add one or more environment variables to the docker run command.

    These variables will not affect you if you start the container with a data directory that already contains a database. Any pre-existing database remains untouched on the container startup.

    The variables are optional, but you must specify at least one of the following:

    • MYSQL_DATABASE - the database schema name that is created when the container starts

    • MYSQL_USER - create a user account when the container starts

    • MYSQL_PASSWORD - used with MYSQL_USER to create a password for that user account.

    • MYSQL_ALLOW_EMPTY_PASSWORD - creates a root user with an empty password. This option is insecure and only should be used for testing or proof of concept when the database can be removed afterward. Anyone can connect as root.

    • MYSQL_ROOT_PASSWORD - this password is used for the root user account. This option is not recommended for production.

    • MYSQL_RANDOM_ROOT_PASSWORD - set this variable instead of MYSQL_ROOT_PASSWORD when you want Percona Server to generate a password for you. The generated password is available in the container’s logs only during the first start of the container. Use docker logs. You cannot retrieve the password after the first start.

    To further secure your instance, use the MYSQL_ONETIME_PASSWORD variable.

    These variables are visible to anyone able to run Docker inspect.

    $ docker inspect ps
    
    Expected output
    ...
     "Env": [
                    "MYSQL_ROOT_PASSWORD=root",
                    "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                    "PS_VERSION=8.0.29-21.1",
                    "OS_VER=el8",
                    "FULL_PERCONA_VERSION=8.0.29-21.1.el8"
                   ]
    ...
    

    You should use Docker secrets or volumes instead.

    Percona Server for MySQL also allows adding the _FILE suffix to a variable name. This suffix lets you add the value in a path so that the value cannot be inspected from outside the container.

    Contact us

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    To report bugs or submit feature requests, open a JIRA ticket.

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    Last update: 2023-01-18
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