d961190e6f
DNS horizontal autoscaling feature is turned on by default on gce. The corresponding env var is piped into almost all other cloud providers.
68 lines
2.7 KiB
Bash
68 lines
2.7 KiB
Bash
#!/bin/bash
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# Copyright 2014 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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## Contains configuration values for interacting with the libvirt CoreOS cluster
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# Number of minions in the cluster
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NUM_NODES=${NUM_NODES:-3}
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export NUM_NODES
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# The IP of the master
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export MASTER_IP="192.168.10.1"
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export INSTANCE_PREFIX=kubernetes
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export MASTER_NAME="${INSTANCE_PREFIX}-master"
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# Map out the IPs, names and container subnets of each node
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export NODE_IP_BASE="192.168.10."
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NODE_CONTAINER_SUBNET_BASE="10.10"
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MASTER_CONTAINER_NETMASK="255.255.255.0"
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MASTER_CONTAINER_ADDR="${NODE_CONTAINER_SUBNET_BASE}.0.1"
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MASTER_CONTAINER_SUBNET="${NODE_CONTAINER_SUBNET_BASE}.0.1/24"
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CONTAINER_SUBNET="${NODE_CONTAINER_SUBNET_BASE}.0.0/16"
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if [[ "$NUM_NODES" -gt 253 ]]; then
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echo "ERROR: Because of how IPs are allocated in ${BASH_SOURCE}, you cannot create more than 253 nodes"
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exit 1
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fi
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for ((i=0; i < NUM_NODES; i++)) do
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NODE_IPS[$i]="${NODE_IP_BASE}$((i+2))"
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NODE_NAMES[$i]="${INSTANCE_PREFIX}-node-$((i+1))"
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NODE_CONTAINER_SUBNETS[$i]="${NODE_CONTAINER_SUBNET_BASE}.$((i+1)).1/24"
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NODE_CONTAINER_ADDRS[$i]="${NODE_CONTAINER_SUBNET_BASE}.$((i+1)).1"
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NODE_CONTAINER_NETMASKS[$i]="255.255.255.0"
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done
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NODE_CONTAINER_SUBNETS[$NUM_NODES]=$MASTER_CONTAINER_SUBNET
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SERVICE_CLUSTER_IP_RANGE="${SERVICE_CLUSTER_IP_RANGE:-10.11.0.0/16}" # formerly PORTAL_NET
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# Optional: Enable node logging.
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ENABLE_NODE_LOGGING=false
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LOGGING_DESTINATION=elasticsearch
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# Optional: Install cluster DNS.
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ENABLE_CLUSTER_DNS="${KUBE_ENABLE_CLUSTER_DNS:-true}"
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DNS_SERVER_IP="${SERVICE_CLUSTER_IP_RANGE%.*}.254"
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DNS_DOMAIN="cluster.local"
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DNS_REPLICAS=1
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# Optional: Enable DNS horizontal autoscaler
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ENABLE_DNS_HORIZONTAL_AUTOSCALER="${KUBE_ENABLE_DNS_HORIZONTAL_AUTOSCALER:-false}"
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#Generate dns files
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sed -f "${KUBE_ROOT}/cluster/addons/dns/transforms2sed.sed" < "${KUBE_ROOT}/cluster/addons/dns/skydns-rc.yaml.base" | sed -f "${KUBE_ROOT}/cluster/libvirt-coreos/forShellEval.sed" > "${KUBE_ROOT}/cluster/libvirt-coreos/skydns-rc.yaml"
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sed -f "${KUBE_ROOT}/cluster/addons/dns/transforms2sed.sed" < "${KUBE_ROOT}/cluster/addons/dns/skydns-svc.yaml.base" | sed -f "${KUBE_ROOT}/cluster/libvirt-coreos/forShellEval.sed" > "${KUBE_ROOT}/cluster/libvirt-coreos/skydns-svc.yaml"
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