teleivo / dhis2-im-startup

Helper to analyze DHIS2 startup times on the instance manager

DHIS2 Instance Manager Startup Analysis

Usage

Deploy DHIS2 instances on the instance manager.

Query the pods you deployed (adapt namespace, selector, ...) and pipe it into the main.go.

kubectl get pods -o json --namespace whoami -l app.kubernetes.io/name=core | 
    jq -r '[ .items[] | {name: .metadata.name,conditions: .status.conditions,containerStatuses: .status.containerStatuses} ]' |
    go run cmd/kubetime/main.go

You should see something like

"ivo-dhis2-0-core-6fd5748d86-l7jvg": 2022-07-17 04:20:54 +0000 UTC (ready) - 2022-07-17 04:14:25 +0000 UTC (init) = 6m29s (duration) [1 (restarts)]
"ivo-dhis2-1-core-5dd7d5955d-k262j": 2022-07-17 04:19:50 +0000 UTC (ready) - 2022-07-17 04:14:49 +0000 UTC (init) = 5m1s (duration) [0 (restarts)]
"ivo-dhis2-2-core-594b8bdd7-k7wgg": 2022-07-17 04:21:12 +0000 UTC (ready) - 2022-07-17 04:15:09 +0000 UTC (init) = 6m3s (duration) [1 (restarts)]
"ivo-dhis2-3-core-6cb6fc7c5b-5dgxm": 2022-07-17 04:20:09 +0000 UTC (ready) - 2022-07-17 04:15:38 +0000 UTC (init) = 4m31s (duration) [0 (restarts)]

Limitations

• cannot yet filter for pod prefix. So you might get startup duration for pods you are not interested in.
• is ready-init times the right measure to analyze DHIS2 startup time?