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How to set Java heap size (Xms/Xmx) inside Docker container?
Volker: Testen docker sonarqube

Getting Filesystem Mountpoints from running Docker container Usually done with

$> docker inspect uumsonar_sonarqube_1
[
  {
      "Id": "188e05a3885873121d5110336a264d2440873d9dd2f6293bfa8d41ee42149931",
      "Created": "2017-08-17T15:16:01.891731621Z",
      "Path": "./bin/run.sh",
      "Args": [
      ...

Resulting in a quite verbose output with a lot of stuff that distracts you from the info you’re looking for. JQ to sthe rescue JQ is like *nix grep but for structured JSON data

The Mountpoint lookup can be written like this:

$> docker inspect uumsonar_sonarqube_1 | jq '.[0] | .Mounts'
[
{
  "Type": "bind",
  "Source": "/home/vbe/dev/uum_sonar/sonarqube",
  "Destination": "/opt/sonarqube/data",
  "Mode": "rw",
  "RW": true,
  "Propagation": "rprivate"
}
]

Best Practices

Favour VOlumes over bind mount

Monitor docker performance with useful names

docker stats can be used to monitor docker containers. The downside is it shows cryptic container ids instead of names

To make the output more usefull you can enhance the command: docker stats $(docker ps --format=)

Pretty neat. Thanks to omercnet for mentioning it here

volkerbenders.github.io

Docker Links

Best Practices

Monitor docker performance with useful names

Docker setup / installation

Monitoring