In your Kubernetes cluster, prepare a dedicated node that will be used for storing log files:
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Ensure that this node has enough resources for a Fluentd instance.
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Ensure that this node has enough disk space for storing log files. We recommend that you use a partition on a dedicated disk attached to the node.
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Add a special label to this node to indicate that it is intended for storing log files:
kubectl label nodes NODE_NAME purpose=infrastructure