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Ingress installation

Prerequisites

First we added a new node to the cluster, which will take care of routing incoming requests to the appropriate services. So we created a new VM (Launch and manage instances) with a low-medium flavor, as it should only act as an ingress, and joined it to cluster (Building the cluster). We then assigned to the node, through a label, the "role" of ingress with the command

# Enter the node name and label. The optional "--overwrite" flag is used in case the value is already present
$ kubectl label node <node_name> kubernetes.io/role=<label_value> [--overwrite]

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