Created
October 27, 2022 15:36
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Hotswap CVO in a running cluster
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| #!/bin/bash | |
| set -eu | |
| root="$(dirname "${BASH_SOURCE[0]}")/.." | |
| customCvoPullspec=quay.io/petr-muller/cluster-version-operator:"$(git branch --show-current)" | |
| payload="$(oc get -n openshift-cluster-version clusterversion version -o jsonpath='{.status.desired.image}')" | |
| podman pull "$payload" | |
| dockerfile="$(mktemp)" | |
| cp "$root/Dockerfile" "$dockerfile" | |
| sed -i 's|registry.ci.openshift.org/openshift/origin-v4.0:base|'"$payload"'|' "$dockerfile" | |
| sed -i '\|COPY install /manifests|d' "$dockerfile" | |
| sed -i '\|COPY vendor.*|d' "$dockerfile" | |
| sed -i '\|COPY bootstrap.*|d' "$dockerfile" | |
| podman build "$root" -f "$dockerfile" -t "$customCvoPullspec" | |
| podman push "$customCvoPullspec" | |
| digestPullspec="$(skopeo inspect --format='{{.Name}}@{{.Digest}}' docker://"$customCvoPullspec")" | |
| imagePatch='{"op":"replace","path":"/spec/template/spec/containers/0/image","value":"'"$digestPullspec"'"}' | |
| releaseImageArgPatch='{"op":"replace","path":"/spec/template/spec/containers/0/args/1","value":"--release-image='"$digestPullspec"'"}' | |
| oc patch -n openshift-cluster-version deployment cluster-version-operator --type json --patch="[$imagePatch,$releaseImageArgPatch]" |
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