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Merge pull request #6094 from ddysher/remove-reachability

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Remove Reachable Condition
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Brian Grant
2015-04-01 13:16:47 -07:00
parent ba22494e5f 6bb9701489
commit 7450da41f1
14 changed files with 878 additions and 587 deletions
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24
docs/node.md
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@@ -38,26 +38,20 @@ must have appropriate conditions, see below.
### Node Condition
Node Condition describes the conditions of `Running` nodes. Current valid
conditions are `NodeReachable`, `NodeReady` and `NodeSchedulable`. In the
future, we plan to add more. `NodeReachable` means the node can be reached
within the cluster. `NodeReady` means the kubelet returns StatusOK for HTTP
health check. `NodeSchedulable` means node is allowed to schedule any new
pods and is controlled by 'unschedulable' field in node spec.
Different condition provides different level of understanding for node
health. Kubernetes will make a comprehensive scheduling decision based on the
information. Node condition is represented as a json object. For example, the
following conditions mean the node is reachable from its cluster, node is in
sane state but not allowed to accept new pods:
conditions are `NodeReady` and `NodeSchedulable`. In the future, we plan to
add more. `NodeReady` means kubelet is healthy and ready to accept pods
`NodeSchedulable` means node is allowed to schedule any new pods and is
controlled by 'unschedulable' field in node spec. Different condition provides
different level of understanding for node health. Kubernetes will make a
comprehensive scheduling decision based on the information. Node condition
is represented as a json object. For example, the following conditions mean
the node is in sane state but not allowed to accept new pods:
```json
"conditions": [
{
"kind": "Reachable",
"status": "True",
},
{
"kind": "Ready",
"status": "True",
},
},
{
"kind": "Schedulable",
"status": "False",