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20 lines
554 B
Bash
20 lines
554 B
Bash
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#!/bin/bash
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# Deploys CoreDNS to a cluster currently running Kube-DNS.
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SERVICE_CIDR=$1
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CLUSTER_DOMAIN=${2:-cluster.local}
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YAML_TEMPLATE=${3:-`pwd`/coredns.yaml.sed}
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YAML=${4:-`pwd`/coredns.yaml}
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if [[ -z $SERVICE_CIDR ]]; then
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echo "Usage: $0 SERVICE-CIDR [ CLUSTER-DOMAIN ] [ YAML-TEMPLATE ] [ YAML ]"
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exit 1
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fi
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CLUSTER_DNS_IP=$(kubectl get service --namespace kube-system kube-dns -o jsonpath="{.spec.clusterIP}")
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sed -e s/CLUSTER_DNS_IP/$CLUSTER_DNS_IP/g -e s/CLUSTER_DOMAIN/$CLUSTER_DOMAIN/g -e s?SERVICE_CIDR?$SERVICE_CIDR?g $YAML_TEMPLATE
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