Pulling simple container metrics with jq

concourse-container-metrics.markdown

• Container count by pipeline

  $ fly -t uh cs --json | jq -r '[group_by(.pipeline_name)[] | {(.[0].pipeline_name): length }] | add'
  {
    "concourse-resource-proxy": 2,
    "concourse-rss-resource": 2,
    "env-sensors": 7,
    "forwardemail-webhook-rs": 2,
    "mosquitto-prometheus-exporter": 7,
    "pinboard": 3,
    "plaintweet": 7,
    "postgres-release-monitor": 1,
    "pypi-resource": 2,
    "regional-sales": 6,
    "regional-sales-instances": 2,
    "rustomato": 2,
    "task-library": 6,
    "tasmota-sensor-bridge": 14,
    "video-archive": 9,
    "webservices": 24
  }

• As TSV

  $ fly -t uh cs --json | jq -r '[ group_by(.pipeline_name)[] | {(.[0].pipeline_name): length } ] | add | to_entries | .[] | [.key, .value] | @tsv'
  concourse-resource-proxy        2
  concourse-rss-resource  2
  env-sensors     7
  forwardemail-webhook-rs 2
  mosquitto-prometheus-exporter   7
  pinboard        3
  plaintweet      7
  postgres-release-monitor        1
  pypi-resource   2
  regional-sales  6
  regional-sales-instances        2
  rustomato       2
  task-library    6
  tasmota-sensor-bridge   14
  video-archive   9
  webservices     24

• Transposed TSV

  $ fly -t uh cs --json | jq -r '[ group_by(.pipeline_name)[] | {(.[0].pipeline_name): length } ] | add | to_entries | .[] | [.key, .value]' | jq -rs 'transpose | .[] | @tsv'
  concourse-resource-proxy        concourse-rss-resource  env-sensors     forwardemail-webhook-rs mosquitto-prometheus-exporter   pinboard        plaintweet      postgres-release-monitor    pypi-resource   regional-sales  regional-sales-instances        rustomato       task-library    tasmota-sensor-bridge   video-archive   webservices
  1       3       9       2       7       4       7       2       2       6       2       2       8       11      11      23