Passing options to PMM Server docker at first run¶

Docker allows configuration options to be passed using the flag -e followed by the option you would like to set.

Here, we pass more than one option to PMM Server along with the docker run command. Run this command as root or by using the sudo command.

$ docker run -d -p 80:80 \
  --volumes-from pmm-data \
  --name pmm-server \
  -e SERVER_USER=jsmith \
  -e SERVER_PASSWORD=SomeR4ndom-Pa$$w0rd \
  --restart always \
  percona/pmm-server:1

Passing options to PMM Server for an already deployed docker instance¶

docker doesn’t support changing environment variables on an already provisioned container, therefore you need to stop the current container and start a new container with the new options. variable with docker start if you want to change the setting for existing installation, because docker start cares to keep container immutable and doesn’t support changing environment variables. Therefore if you want container with different properties, you should run a new container instead.

1. Stop and Rename the old container:

   docker stop pmm-server docker rename pmm-server pmm-server-old

2. Ensure you are running the latest version of PMM Server:

   docker pull percona/pmm-server:latest

   Warning

   When you destroy and recreate the container, all the updates you have done through PMM Web interface will be lost. What’s more, the software version will be reset to the one in the Docker image. Running an old PMM version with a data volume modified by a new PMM version may cause unpredictable results. This could include data loss.

4. Start the container with the new settings. For example, changing METRICS_RESOLUTION would look as follows:

   docker run -d \
     -p 80:80 \
     --volumes-from pmm-data \
     --name pmm-server \
     --restart always \
     -e METRICS_RESOLUTION=5s \
     percona/pmm-server:latest
   

5. Once you’re satisfied with the new container deployment options and you don’t plan to revert, you can remove the old container:

   docker rm pmm-server-old
   

List of PMM Server Parameters¶

option DISABLE_TELEMETRY¶

With telemetry enabled, your PMM Server sends some statistics to v.percona.com every 24 hours. This statistics includes the following details:

• PMM Server unique ID
• PMM version
• The name and version of the operating system
• MySQL version
• Perl version

If you do not want your PMM Server to send this information, disable telemetry when running your Docker container:

$ docker run ... -e DISABLE_TELEMETRY=true ... percona/pmm-server:1

option METRICS_RETENTION¶

This option determines how long metrics are stored at PMM Server. The value is passed as a combination of hours, minutes, and seconds, such as 720h0m0s. The minutes (a number followed by m) and seconds (a number followed by s) are optional.

To set the METRICS_RETENTION option to 8 days, set this option to 192h.

Run this command as root or by using the sudo command

$ docker run ... -e METRICS_RETENTION=192h ... percona/pmm-server:1

See also

Data retention in PMM

Data retention

Queries retention

QUERIES_RETENTION

option QUERIES_RETENTION¶

This option determines how many days queries are stored at PMM Server.

$ docker run ... -e QUERIES_RETENTION=30 ... percona/pmm-server:1

See also

Metrics retention

METRICS_RETENTION

Data retention in PMM

Data retention

option ORCHESTRATOR_ENABLED¶

This option enables Orchestrator (See Orchestrator). By default it is disabled. It is also desabled if this option contains false.

$ docker run ... -e ORCHESTRATOR_ENABLED=true ... percona/pmm-server:1

See also

Orchestrator

Orchestrator

Orchestrator Credentials

• ORCHESTRATOR_USER
• ORCHESTRATOR_PASSWORD

option ORCHESTRATOR_USER¶

Pass this option, when running your PMM Server via Docker to set the orchestrator user. You only need this parameter (along with ORCHESTRATOR_PASSWORD if you have set up a custom Orchestrator user.

This option has no effect if the ORCHESTRATOR_ENABLED option is set to false.

$ docker run ... -e ORCHESTRATOR_ENABLED=true ORCHESTRATOR_USER=name -e ORCHESTRATOR_PASSWORD=pass ... percona/pmm-server:1

option ORCHESTRATOR_PASSWORD¶

Pass this option, when running your PMM Server via Docker to set the orchestrator password.

This option has no effect if the ORCHESTRATOR_ENABLED option is set to false.

$ docker run ... -e ORCHESTRATOR_ENABLED=true ORCHESTRATOR_USER=name -e ORCHESTRATOR_PASSWORD=pass ... percona/pmm-server:1

See also

ORCHESTRATOR_ENABLED

option SERVER_USER¶

By default, the user name is pmm. Use this option to use another user name.

Run this command as root or by using the sudo command.

$ docker run ... -e SERVER_USER=USER_NAME ... percona/pmm-server:1

option SERVER_PASSWORD¶

Set the password to access the PMM Server web interface.

Run this command as root or by using the sudo command.

$ docker run ... -e SERVER_PASSWORD=YOUR_PASSWORD ... percona/pmm-server:1

By default, the user name is pmm. You can change it by passing the SERVER_USER variable.

option METRICS_RESOLUTION¶

This environment variable sets the minimum resolution for checking metrics. You should set it if the latency is higher than 1 second.

Run this command as root or by using the sudo command.

$ docker run ... -e METRICS_RESOLUTION=VALUE ... percona/pmm-server:1

option METRICS_MEMORY¶

By default, Prometheus in PMM Server uses all available memory for storing the most recently used data chunks. Depending on the amount of data coming into Prometheus, you may require to allow less memory consumption if it is needed for other processes.

Important

Starting with version 1.13.0, PMM uses Prometheus 2. Due to optimizations in Prometheus, setting the metrics memory by passing the METRICS_MEMORY option is a deprecated practice.

If you are still using a version of PMM prior to 1.13 you might need to set the metrics memory by passing the METRICS_MEMORY environment variable along with the docker run command.

Run this command as root or by using the sudo command. The value must be passed in kilobytes. For example, to set the limit to 4 GB of memory run the following command:

$ docker run ... -e METRICS_MEMORY=4194304 ... percona/pmm-server:1

See also

Docker documentation: Controlling memory usage in a Docker container

https://docs.docker.com/config/containers/resource_constraints/

option DISABLE_UPDATES¶

To update your PMM from web interface you only need to click the Update on the home page. The DISABLE_UPDATES option is useful if updating is not desirable. Set it to true when running PMM in the Docker container.

Run this command as root or by using the sudo command.

$ docker run ... -e DISABLE_UPDATES=true ... percona/pmm-server:1

The DISABLE_UPDATES option removes the Update button from the interface and prevents the system from being updated manually.