{product-title} provides strict backwards compatibility guarantees for all supported APIs, excluding alpha APIs (which may be changed without notice) and beta APIs (which may occasionally be changed in a non-backwards compatible manner).
The {product-title} version must match between master and node hosts, excluding
temporary mismatches during cluster upgrades. For example, in a 3.5 cluster, all
masters must be 3.5 and all nodes must be 3.5. However, {product-title} will
continue to support older oc clients against newer servers. For example, a 3.4
oc will work against 3.3, 3.4, and 3.5 servers.
Changes of APIs for non-security related reasons will involve, at minimum, two
minor releases (3.1 to 3.2 to 3.3, for example) to allow older oc to update.
Using new capabilities may require newer oc. A 3.2 server may have additional
capabilities that a 3.1 oc cannot use and a 3.2 oc may have additional
capabilities that are not supported by a 3.1 server.
X.Y ( |
X.Y+N [1] ( |
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X.Y (Server) |
|
|
X.Y+N [1] (Server) |
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Fully compatible.
oc client may not be able to access server features.
oc client may provide options and features that may not be compatible with the accessed server.