Evacuate via API - when is the host "really" evacuated

Rancher 1.x
1

Hi all,

Currentlly I’m trying to figure out an automated way for maintenance tasks. I can evacuate via API. But how do I figure out that the host is completely evacuated? Currently I’m using the following code:

curl -s -u "${CATTLE_ACCESS_KEY}:${CATTLE_SECRET_KEY}" \
    -H 'Accept: application/json' \
    'https://rancher.office.sevenval.de/v2-beta/hosts/'"$host"'/instances' | \
    jq '.data[] | select(.state != "exited" and .state  != "removed") | select(.hostId | test("'"$host"'")) | select(.system | not) | { Name: .name , State: .state }'

When I evacuate a host the following happens:

  1. a lot of containers in the state removing and stopping
  2. only the agent container is shown, but in the UI I can still see some cotainers with a trash can symbol
  3. for a short time containers “reappear” with the state purging allthough the UI showed nothing

So I’m a bit puzzled as to what is the sign that an evacuation is “really” complete.

Any help would be much appreciated.

Cheers, Shorty

2

Any news about the topic? I’m also interested

3

Evacuate is async and there is no simple state to tell you it’s done.

The containers will go [stopping -> stopped ->] removing -> removed -> purging -> purged. The UI does not show removed/purging/purged resources. “exited” is not a valid state.