whentimeslows/website
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Update links to avoid redirects. (#5765)

Browse Source
This commit is contained in:
Steve Perry
2017-10-04 16:07:41 -07:00
committed by GitHub
parent 6ddca1d62f
commit fda7ed44df
9 changed files with 24 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/concepts/architecture/nodes.md
+5 -5
View File
@@ -12,7 +12,7 @@ title: Nodes
A `node` is a worker machine in Kubernetes, previously known as a `minion`. A node
may be a VM or physical machine, depending on the cluster. Each node has
the services necessary to run [pods](/docs/user-guide/pods) and is managed by the master
the services necessary to run [pods](/docs/concepts/workloads/pods/pod/) and is managed by the master
components. The services on a node include Docker, kubelet and kube-proxy. See
[The Kubernetes Node](https://git.k8s.io/community/contributors/design-proposals/architecture/architecture.md#the-kubernetes-node) section in the
architecture design doc for more details.
@@ -64,7 +64,7 @@ The node condition is represented as a JSON object. For example, the following r
]
```
If the Status of the Ready condition is "Unknown" or "False" for longer than the `pod-eviction-timeout`, an argument is passed to the [kube-controller-manager](/docs/admin/kube-controller-manager) and all of the Pods on the node are scheduled for deletion by the Node Controller. The default eviction timeout duration is **five minutes**. In some cases when the node is unreachable, the apiserver is unable to communicate with the kubelet on it. The decision to delete the pods cannot be communicated to the kubelet until it re-establishes communication with the apiserver. In the meantime, the pods which are scheduled for deletion may continue to run on the partitioned node.
If the Status of the Ready condition is "Unknown" or "False" for longer than the `pod-eviction-timeout`, an argument is passed to the [kube-controller-manager](/docs/admin/kube-controller-manager/) and all of the Pods on the node are scheduled for deletion by the Node Controller. The default eviction timeout duration is **five minutes**. In some cases when the node is unreachable, the apiserver is unable to communicate with the kubelet on it. The decision to delete the pods cannot be communicated to the kubelet until it re-establishes communication with the apiserver. In the meantime, the pods which are scheduled for deletion may continue to run on the partitioned node.
In versions of Kubernetes prior to 1.5, the node controller would [force delete](/docs/concepts/workloads/pods/pod/#force-deletion-of-pods)
these unreachable pods from the apiserver. However, in 1.5 and higher, the node controller does not force delete pods until it is
@@ -74,7 +74,7 @@ permanently left a cluster, the cluster administrator may need to delete the nod
Kubernetes causes all the Pod objects running on it to be deleted from the apiserver, freeing up their names.
Version 1.8 introduces an alpha feature that automatically creates
[taints](/docs/concepts/configuration/taint-and-toleration) that represent conditions.
[taints](/docs/concepts/configuration/taint-and-toleration/) that represent conditions.
To enable this behavior, pass an additional feature gate flag `--feature-gates=...,TaintNodesByCondition=true`
to the API server, controller manager, and scheduler.
When `TaintNodesByCondition` is enabled, the scheduler ignores conditions when considering a Node; instead
@@ -101,7 +101,7 @@ The information is gathered by Kubelet from the node.
## Management
Unlike [pods](/docs/user-guide/pods) and [services](/docs/user-guide/services),
Unlike [pods](/docs/concepts/workloads/pods/pod/) and [services](/docs/concepts/workloads/pods/pod/),
a node is not inherently created by Kubernetes: it is created externally by cloud
providers like Google Compute Engine, or exists in your pool of physical or virtual
machines. What this means is that when Kubernetes creates a node, it is really
@@ -192,7 +192,7 @@ Starting in Kubernetes 1.6, the NodeController is also responsible for evicting
pods that are running on nodes with `NoExecute` taints, when the pods do not tolerate
the taints. Additionally, as an alpha feature that is disabled by default, the
NodeController is responsible for adding taints corresponding to node problems like
node unreachable or not ready. See [this documentation](/docs/concepts/configuration/taint-and-toleration)
node unreachable or not ready. See [this documentation](/docs/concepts/configuration/taint-and-toleration/)
for details about `NoExecute` taints and the alpha feature.
Starting in version 1.8, the node controller can be made responsible for creating taints that represent