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kubernetes/cluster
Kubernetes Submit Queue 3ccc755f07 Merge pull request #55945 from x13n/master-startup
Automatic merge from submit-queue (batch tested with PRs 55841, 55948, 55945). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Set -w flag on all iptables calls during master startup

Lack of this flag sometimes causes iptables to return error code 4 (if
other process holds xtables lock). As a result, because of  `set -o errexit`,
whole startup script fails, leaving master in an incorrect state.

This is another occurence of (already closed) https://github.com/kubernetes/kubernetes/issues/7370

**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:

**Special notes for your reviewer**:

**Release note**:

```release-note
Bugfix: master startup script on GCP no longer fails randomly due to concurrent iptables invocations.
```
2017-11-18 14:10:17 -08:00
..
2017-10-26 13:37:37 -07:00

Cluster Configuration

Deprecation Notice: This directory has entered maintenance mode and will not be accepting new providers. Please submit new automation deployments to kube-deploy. Deployments in this directory will continue to be maintained and supported at their current level of support.

The scripts and data in this directory automate creation and configuration of a Kubernetes cluster, including networking, DNS, nodes, and master components.

See the getting-started guides for examples of how to use the scripts.

cloudprovider/config-default.sh contains a set of tweakable definitions/parameters for the cluster.

The heavy lifting of configuring the VMs is done by SaltStack.

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