8bf1f6345b
The file data/data/rhcos-stream.json was deleted in
d773ee5573
and the corresponding data now lives in data/data/coreos/rhcos.json. Let's update
the documentation to reflect this change.
1.7 KiB
CoreOS and the installer
A key decision made before the release of OpenShift 4 is to pin the CoreOS bootimage in
the installer: e080f04947
That is still the case today; when one gets an openshift-install binary, that
binary contains the 2-tuple (CoreOS, release image), meaning the result of an
install will be the same thing each time.
More background:
- https://github.com/openshift/enhancements/pull/201
- https://github.com/openshift/machine-config-operator/blob/master/docs/OSUpgrades.md
Stream metadata
As of 4.8 the stream metadata enhancement is in progress which provides a standardized JSON format and injects that data into the cluster as well.
Updating pinned stream metadata
To update the bootimage for one or more architectures, use e.g.
$ plume cosa2stream --target data/data/coreos/rhcos.json --distro rhcos x86_64=48.83.202102230316-0 s390x=47.83.202102090311-0 ppc64le=47.83.202102091015-0 --url https://rhcos-redirector.apps.art.xq1c.p1.openshiftapps.com/art/storage/releases --no-signatures
For more information on this command, see:
- https://github.com/coreos/coreos-assembler/pull/2000
- https://github.com/coreos/coreos-assembler/pull/2052
Origin of stream metadata
For historical reference, the initial file data/data/rhcos-stream.json was generated this way:
$ plume cosa2stream --name rhcos-4.8 --distro rhcos x86_64=48.83.202102230316-0 s390x=47.83.202102090311-0 ppc64le=47.83.202102091015-0 > data/data/rhcos-stream.json
NOTE: the data for data/data/rhcos-stream.json now lives in data/data/coreos/rhcos.json