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The AWS API requires a signature on method calls, including the timestamp to prevent replay attacks. A time drift of up to 5 minutes between client and server is tolerated. However, if the client clock drifts by >5 minutes, the server will start to reject API calls (with the cryptic "AWS was not able to validate the provided access credentials"). To prevent this happening, we install ntp on all nodes. Fix #11371
Cluster Configuration
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.