Add dghubble/pegasus AWS Kubernetes Terraform module
This commit is contained in:
Dalton Hubble
parent
663f37ed6d
commit
d8e4ac172a
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data "aws_ami" "coreos" {
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most_recent = true
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owners = ["595879546273"]
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filter {
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name = "architecture"
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values = ["x86_64"]
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}
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filter {
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name = "virtualization-type"
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values = ["hvm"]
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}
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filter {
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name = "name"
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values = ["CoreOS-${var.os_channel}-*"]
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}
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}
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# Self-hosted Kubernetes assets (kubeconfig, manifests)
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module "bootkube" {
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source = "git::https://github.com/poseidon/bootkube-terraform.git?ref=dbfb11c6eafa08f839eac2834ca1aca35dafe965"
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cluster_name = "${var.cluster_name}"
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api_servers = ["${format("%s.%s", var.cluster_name, var.dns_zone)}"]
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etcd_servers = ["http://127.0.0.1:2379"]
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asset_dir = "${var.asset_dir}"
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networking = "${var.networking}"
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network_mtu = "${var.network_mtu}"
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pod_cidr = "${var.pod_cidr}"
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service_cidr = "${var.service_cidr}"
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experimental_self_hosted_etcd = "true"
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}
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---
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systemd:
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units:
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- name: docker.service
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enable: true
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- name: locksmithd.service
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mask: true
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- name: wait-for-dns.service
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enable: true
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contents: |
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[Unit]
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Description=Wait for DNS entries
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Wants=systemd-resolved.service
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Before=kubelet.service
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[Service]
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Type=oneshot
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RemainAfterExit=true
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ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
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[Install]
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RequiredBy=kubelet.service
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- name: kubelet.service
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enable: true
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contents: |
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[Unit]
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Description=Kubelet via Hyperkube ACI
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[Service]
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EnvironmentFile=/etc/kubernetes/kubelet.env
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Environment="RKT_RUN_ARGS=--uuid-file-save=/var/cache/kubelet-pod.uuid \
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--volume=resolv,kind=host,source=/etc/resolv.conf \
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--mount volume=resolv,target=/etc/resolv.conf \
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--volume var-lib-cni,kind=host,source=/var/lib/cni \
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--mount volume=var-lib-cni,target=/var/lib/cni \
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--volume opt-cni-bin,kind=host,source=/opt/cni/bin \
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--mount volume=opt-cni-bin,target=/opt/cni/bin \
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--volume var-log,kind=host,source=/var/log \
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--mount volume=var-log,target=/var/log"
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ExecStartPre=/bin/mkdir -p /opt/cni/bin
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/checkpoint-secrets
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/inactive-manifests
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ExecStartPre=/bin/mkdir -p /var/lib/cni
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ExecStartPre=/usr/bin/bash -c "grep 'certificate-authority-data' /etc/kubernetes/kubeconfig | awk '{print $2}' | base64 -d > /etc/kubernetes/ca.crt"
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ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/cache/kubelet-pod.uuid
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ExecStart=/usr/lib/coreos/kubelet-wrapper \
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--allow-privileged \
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--anonymous-auth=false \
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--client-ca-file=/etc/kubernetes/ca.crt \
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--cluster_dns=${k8s_dns_service_ip} \
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--cluster_domain=cluster.local \
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--cni-conf-dir=/etc/kubernetes/cni/net.d \
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--exit-on-lock-contention \
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--kubeconfig=/etc/kubernetes/kubeconfig \
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--lock-file=/var/run/lock/kubelet.lock \
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--network-plugin=cni \
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--node-labels=node-role.kubernetes.io/master \
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--pod-manifest-path=/etc/kubernetes/manifests \
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--register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
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--require-kubeconfig
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ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
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Restart=always
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RestartSec=10
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[Install]
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WantedBy=multi-user.target
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- name: bootkube.service
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contents: |
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[Unit]
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Description=Bootstrap a Kubernetes cluster
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ConditionPathExists=!/opt/bootkube/init_bootkube.done
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[Service]
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Type=oneshot
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RemainAfterExit=true
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WorkingDirectory=/opt/bootkube
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ExecStart=/opt/bootkube/bootkube-start
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ExecStartPost=/bin/touch /opt/bootkube/init_bootkube.done
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[Install]
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WantedBy=multi-user.target
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storage:
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files:
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- path: /etc/kubernetes/kubeconfig
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filesystem: root
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mode: 0644
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contents:
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inline: |
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apiVersion: v1
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kind: Config
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clusters:
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- name: local
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cluster:
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server: ${kubeconfig_server}
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certificate-authority-data: ${kubeconfig_ca_cert}
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users:
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- name: kubelet
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user:
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client-certificate-data: ${kubeconfig_kubelet_cert}
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client-key-data: ${kubeconfig_kubelet_key}
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contexts:
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- context:
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cluster: local
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user: kubelet
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- path: /etc/kubernetes/kubelet.env
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filesystem: root
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mode: 0644
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contents:
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inline: |
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KUBELET_IMAGE_URL=quay.io/coreos/hyperkube
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KUBELET_IMAGE_TAG=v1.7.5_coreos.0
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- path: /etc/sysctl.d/max-user-watches.conf
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filesystem: root
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contents:
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inline: |
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fs.inotify.max_user_watches=16184
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- path: /opt/bootkube/bootkube-start
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filesystem: root
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mode: 0544
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user:
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id: 500
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group:
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id: 500
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contents:
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inline: |
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#!/bin/bash
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# Wrapper for bootkube start
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set -e
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# Move experimental manifests
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[ -d /opt/bootkube/assets/manifests-* ] && mv /opt/bootkube/assets/manifests-*/* /opt/bootkube/assets/manifests && rm -rf /opt/bootkube/assets/manifests-*
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[ -d /opt/bootkube/assets/experimental/manifests ] && mv /opt/bootkube/assets/experimental/manifests/* /opt/bootkube/assets/manifests && rm -r /opt/bootkube/assets/experimental/manifests
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[ -d /opt/bootkube/assets/experimental/bootstrap-manifests ] && mv /opt/bootkube/assets/experimental/bootstrap-manifests/* /opt/bootkube/assets/bootstrap-manifests && rm -r /opt/bootkube/assets/experimental/bootstrap-manifests
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BOOTKUBE_ACI="$${BOOTKUBE_ACI:-quay.io/coreos/bootkube}"
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BOOTKUBE_VERSION="$${BOOTKUBE_VERSION:-v0.6.2}"
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BOOTKUBE_ASSETS="$${BOOTKUBE_ASSETS:-/opt/bootkube/assets}"
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exec /usr/bin/rkt run \
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--trust-keys-from-https \
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--volume assets,kind=host,source=$${BOOTKUBE_ASSETS} \
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--mount volume=assets,target=/assets \
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--volume bootstrap,kind=host,source=/etc/kubernetes \
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--mount volume=bootstrap,target=/etc/kubernetes \
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$${RKT_OPTS} \
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$${BOOTKUBE_ACI}:$${BOOTKUBE_VERSION} \
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--net=host \
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--dns=host \
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--exec=/bootkube -- start --asset-dir=/assets "$@"
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passwd:
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users:
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- name: core
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ssh_authorized_keys:
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- "${ssh_authorized_key}"
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@ -0,0 +1,130 @@
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---
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systemd:
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units:
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- name: docker.service
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enable: true
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- name: locksmithd.service
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mask: true
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- name: wait-for-dns.service
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enable: true
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contents: |
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[Unit]
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Description=Wait for DNS entries
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Wants=systemd-resolved.service
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Before=kubelet.service
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[Service]
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Type=oneshot
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RemainAfterExit=true
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ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
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[Install]
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RequiredBy=kubelet.service
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- name: kubelet.service
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enable: true
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contents: |
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[Unit]
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Description=Kubelet via Hyperkube ACI
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[Service]
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EnvironmentFile=/etc/kubernetes/kubelet.env
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Environment="RKT_RUN_ARGS=--uuid-file-save=/var/cache/kubelet-pod.uuid \
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--volume=resolv,kind=host,source=/etc/resolv.conf \
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--mount volume=resolv,target=/etc/resolv.conf \
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--volume var-lib-cni,kind=host,source=/var/lib/cni \
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--mount volume=var-lib-cni,target=/var/lib/cni \
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--volume opt-cni-bin,kind=host,source=/opt/cni/bin \
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--mount volume=opt-cni-bin,target=/opt/cni/bin \
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--volume var-log,kind=host,source=/var/log \
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--mount volume=var-log,target=/var/log"
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ExecStartPre=/bin/mkdir -p /opt/cni/bin
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/checkpoint-secrets
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/inactive-manifests
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ExecStartPre=/bin/mkdir -p /var/lib/cni
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ExecStartPre=/usr/bin/bash -c "grep 'certificate-authority-data' /etc/kubernetes/kubeconfig | awk '{print $2}' | base64 -d > /etc/kubernetes/ca.crt"
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ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/cache/kubelet-pod.uuid
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ExecStart=/usr/lib/coreos/kubelet-wrapper \
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--allow-privileged \
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--anonymous-auth=false \
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--client-ca-file=/etc/kubernetes/ca.crt \
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--cluster_dns=${k8s_dns_service_ip} \
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--cluster_domain=cluster.local \
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--cni-conf-dir=/etc/kubernetes/cni/net.d \
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--exit-on-lock-contention \
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--kubeconfig=/etc/kubernetes/kubeconfig \
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--lock-file=/var/run/lock/kubelet.lock \
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--network-plugin=cni \
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--node-labels=node-role.kubernetes.io/node \
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--pod-manifest-path=/etc/kubernetes/manifests \
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--require-kubeconfig
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ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
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Restart=always
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RestartSec=5
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[Install]
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WantedBy=multi-user.target
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- name: delete-node.service
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enable: true
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contents: |
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[Unit]
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Description=Waiting to delete Kubernetes node on shutdown
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[Service]
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Type=oneshot
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RemainAfterExit=true
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ExecStart=/bin/true
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ExecStop=/etc/kubernetes/delete-node
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[Install]
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WantedBy=multi-user.target
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storage:
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files:
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- path: /etc/kubernetes/kubeconfig
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filesystem: root
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mode: 0644
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contents:
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inline: |
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apiVersion: v1
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kind: Config
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clusters:
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- name: local
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cluster:
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server: ${kubeconfig_server}
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certificate-authority-data: ${kubeconfig_ca_cert}
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users:
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- name: kubelet
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user:
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client-certificate-data: ${kubeconfig_kubelet_cert}
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client-key-data: ${kubeconfig_kubelet_key}
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contexts:
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- context:
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cluster: local
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user: kubelet
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- path: /etc/kubernetes/kubelet.env
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filesystem: root
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mode: 0644
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contents:
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inline: |
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KUBELET_IMAGE_URL=quay.io/coreos/hyperkube
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KUBELET_IMAGE_TAG=v1.7.5_coreos.0
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- path: /etc/sysctl.d/max-user-watches.conf
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filesystem: root
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contents:
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inline: |
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fs.inotify.max_user_watches=16184
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- path: /etc/kubernetes/delete-node
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filesystem: root
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mode: 0744
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contents:
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inline: |
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#!/bin/bash
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set -e
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exec /usr/bin/rkt run \
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--trust-keys-from-https \
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--volume config,kind=host,source=/etc/kubernetes \
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--mount volume=config,target=/etc/kubernetes \
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quay.io/coreos/hyperkube:v1.7.5_coreos.0 \
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--net=host \
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--dns=host \
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--exec=/kubectl -- --kubeconfig=/etc/kubernetes/kubeconfig delete node $(hostname)
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passwd:
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users:
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- name: core
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ssh_authorized_keys:
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- "${ssh_authorized_key}"
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@ -0,0 +1,244 @@
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# Controllers AutoScaling Group
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resource "aws_autoscaling_group" "controllers" {
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name = "${var.cluster_name}-controller"
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load_balancers = ["${aws_elb.controllers.id}"]
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# count
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desired_capacity = "${var.controller_count}"
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min_size = "${var.controller_count}"
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max_size = "${var.controller_count}"
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# network
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vpc_zone_identifier = ["${aws_subnet.public.*.id}"]
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# template
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launch_configuration = "${aws_launch_configuration.controller.name}"
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lifecycle {
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# override the default destroy and replace update behavior
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create_before_destroy = true
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ignore_changes = ["image_id"]
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}
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tags = [{
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key = "Name"
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value = "${var.cluster_name}-controller"
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propagate_at_launch = true
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}]
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}
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# Controller template
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resource "aws_launch_configuration" "controller" {
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name_prefix = "${var.cluster_name}-controller-template-"
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image_id = "${data.aws_ami.coreos.image_id}"
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instance_type = "${var.controller_type}"
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user_data = "${data.ct_config.controller_ign.rendered}"
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# storage
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root_block_device {
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volume_type = "standard"
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volume_size = "${var.disk_size}"
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}
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# network
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associate_public_ip_address = true
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security_groups = ["${aws_security_group.controller.id}"]
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lifecycle {
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// Override the default destroy and replace update behavior
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create_before_destroy = true
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}
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}
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# Controller Container Linux Config
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data "template_file" "controller_config" {
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template = "${file("${path.module}/cl/controller.yaml.tmpl")}"
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vars = {
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k8s_dns_service_ip = "${cidrhost(var.service_cidr, 10)}"
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k8s_etcd_service_ip = "${cidrhost(var.service_cidr, 15)}"
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ssh_authorized_key = "${var.ssh_authorized_key}"
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kubeconfig_ca_cert = "${module.bootkube.ca_cert}"
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kubeconfig_kubelet_cert = "${module.bootkube.kubelet_cert}"
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kubeconfig_kubelet_key = "${module.bootkube.kubelet_key}"
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kubeconfig_server = "${module.bootkube.server}"
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}
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}
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data "ct_config" "controller_ign" {
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content = "${data.template_file.controller_config.rendered}"
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pretty_print = false
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}
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# Security Group (instance firewall)
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resource "aws_security_group" "controller" {
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name = "${var.cluster_name}-controller"
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description = "${var.cluster_name} controller security group"
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vpc_id = "${aws_vpc.network.id}"
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tags = "${map("Name", "${var.cluster_name}-controller")}"
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}
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resource "aws_security_group_rule" "controller-icmp" {
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security_group_id = "${aws_security_group.controller.id}"
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type = "ingress"
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protocol = "icmp"
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from_port = 0
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to_port = 0
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cidr_blocks = ["0.0.0.0/0"]
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}
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resource "aws_security_group_rule" "controller-ssh" {
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security_group_id = "${aws_security_group.controller.id}"
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type = "ingress"
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protocol = "tcp"
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from_port = 22
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to_port = 22
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cidr_blocks = ["0.0.0.0/0"]
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}
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resource "aws_security_group_rule" "controller-apiserver" {
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security_group_id = "${aws_security_group.controller.id}"
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type = "ingress"
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protocol = "tcp"
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from_port = 443
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to_port = 443
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cidr_blocks = ["0.0.0.0/0"]
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}
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resource "aws_security_group_rule" "controller-etcd" {
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security_group_id = "${aws_security_group.controller.id}"
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type = "ingress"
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protocol = "tcp"
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from_port = 2379
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to_port = 2380
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self = true
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}
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resource "aws_security_group_rule" "controller-bootstrap-etcd" {
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security_group_id = "${aws_security_group.controller.id}"
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type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 12379
|
||||
to_port = 12380
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-flannel" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "udp"
|
||||
from_port = 8472
|
||||
to_port = 8472
|
||||
source_security_group_id = "${aws_security_group.worker.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-flannel-self" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "udp"
|
||||
from_port = 8472
|
||||
to_port = 8472
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-kubelet-read" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 10255
|
||||
to_port = 10255
|
||||
source_security_group_id = "${aws_security_group.worker.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-kubelet-read-self" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 10255
|
||||
to_port = 10255
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-bgp" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 179
|
||||
to_port = 179
|
||||
source_security_group_id = "${aws_security_group.worker.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-bgp-self" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 179
|
||||
to_port = 179
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-ipip" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 4
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
source_security_group_id = "${aws_security_group.worker.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-ipip-self" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 4
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-ipip-legacy" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 94
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
source_security_group_id = "${aws_security_group.worker.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-ipip-legacy-self" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 94
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "controller-egress" {
|
||||
security_group_id = "${aws_security_group.controller.id}"
|
||||
|
||||
type = "egress"
|
||||
protocol = "-1"
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
cidr_blocks = ["0.0.0.0/0"]
|
||||
ipv6_cidr_blocks = ["::/0"]
|
||||
}
|
||||
|
|
@ -0,0 +1,48 @@
|
|||
# Controller Network Load Balancer DNS Record
|
||||
resource "aws_route53_record" "controllers" {
|
||||
zone_id = "${var.dns_zone_id}"
|
||||
|
||||
name = "${format("%s.%s.", var.cluster_name, var.dns_zone)}"
|
||||
type = "A"
|
||||
|
||||
# AWS recommends their special "alias" records for ELBs
|
||||
alias {
|
||||
name = "${aws_elb.controllers.dns_name}"
|
||||
zone_id = "${aws_elb.controllers.zone_id}"
|
||||
evaluate_target_health = true
|
||||
}
|
||||
}
|
||||
|
||||
# Controller Network Load Balancer
|
||||
resource "aws_elb" "controllers" {
|
||||
name = "${var.cluster_name}-controllers"
|
||||
subnets = ["${aws_subnet.public.*.id}"]
|
||||
security_groups = ["${aws_security_group.controller.id}"]
|
||||
|
||||
listener {
|
||||
lb_port = 22
|
||||
lb_protocol = "tcp"
|
||||
instance_port = 22
|
||||
instance_protocol = "tcp"
|
||||
}
|
||||
|
||||
listener {
|
||||
lb_port = 443
|
||||
lb_protocol = "tcp"
|
||||
instance_port = 443
|
||||
instance_protocol = "tcp"
|
||||
}
|
||||
|
||||
# Kubelet HTTP health check
|
||||
health_check {
|
||||
target = "HTTP:10255/healthz"
|
||||
healthy_threshold = 2
|
||||
unhealthy_threshold = 4
|
||||
timeout = 5
|
||||
interval = 6
|
||||
}
|
||||
|
||||
idle_timeout = 1800
|
||||
connection_draining = true
|
||||
connection_draining_timeout = 300
|
||||
}
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
# Ingress Network Load Balancer
|
||||
resource "aws_elb" "ingress" {
|
||||
name = "${var.cluster_name}-ingress"
|
||||
subnets = ["${aws_subnet.public.*.id}"]
|
||||
security_groups = ["${aws_security_group.worker.id}"]
|
||||
|
||||
listener {
|
||||
lb_port = 80
|
||||
lb_protocol = "tcp"
|
||||
instance_port = 80
|
||||
instance_protocol = "tcp"
|
||||
}
|
||||
|
||||
listener {
|
||||
lb_port = 443
|
||||
lb_protocol = "tcp"
|
||||
instance_port = 443
|
||||
instance_protocol = "tcp"
|
||||
}
|
||||
|
||||
# Kubelet HTTP health check
|
||||
health_check {
|
||||
target = "HTTP:10254/healthz"
|
||||
healthy_threshold = 2
|
||||
unhealthy_threshold = 4
|
||||
timeout = 5
|
||||
interval = 6
|
||||
}
|
||||
|
||||
connection_draining = true
|
||||
connection_draining_timeout = 300
|
||||
}
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
data "aws_availability_zones" "all" {}
|
||||
|
||||
# Network VPC, gateway, and routes
|
||||
|
||||
resource "aws_vpc" "network" {
|
||||
cidr_block = "${var.host_cidr}"
|
||||
assign_generated_ipv6_cidr_block = true
|
||||
enable_dns_support = true
|
||||
enable_dns_hostnames = true
|
||||
|
||||
tags = "${map("Name", "${var.cluster_name}")}"
|
||||
}
|
||||
|
||||
resource "aws_internet_gateway" "gateway" {
|
||||
vpc_id = "${aws_vpc.network.id}"
|
||||
|
||||
tags = "${map("Name", "${var.cluster_name}")}"
|
||||
}
|
||||
|
||||
resource "aws_route_table" "default" {
|
||||
vpc_id = "${aws_vpc.network.id}"
|
||||
|
||||
route {
|
||||
cidr_block = "0.0.0.0/0"
|
||||
gateway_id = "${aws_internet_gateway.gateway.id}"
|
||||
}
|
||||
|
||||
route {
|
||||
ipv6_cidr_block = "::/0"
|
||||
gateway_id = "${aws_internet_gateway.gateway.id}"
|
||||
}
|
||||
|
||||
tags = "${map("Name", "${var.cluster_name}")}"
|
||||
}
|
||||
|
||||
# Subnets (one per availability zone)
|
||||
|
||||
resource "aws_subnet" "public" {
|
||||
count = "${length(data.aws_availability_zones.all.names)}"
|
||||
|
||||
vpc_id = "${aws_vpc.network.id}"
|
||||
availability_zone = "${data.aws_availability_zones.all.names[count.index]}"
|
||||
|
||||
cidr_block = "${cidrsubnet(var.host_cidr, 4, count.index)}"
|
||||
ipv6_cidr_block = "${cidrsubnet(aws_vpc.network.ipv6_cidr_block, 8, count.index)}"
|
||||
map_public_ip_on_launch = true
|
||||
assign_ipv6_address_on_creation = true
|
||||
|
||||
tags = "${map("Name", "${var.cluster_name}-public-${count.index}")}"
|
||||
}
|
||||
|
||||
resource "aws_route_table_association" "public" {
|
||||
count = "${length(data.aws_availability_zones.all.names)}"
|
||||
|
||||
route_table_id = "${aws_route_table.default.id}"
|
||||
subnet_id = "${element(aws_subnet.public.*.id, count.index)}"
|
||||
}
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
# Secure copy bootkube assets to ONE controller and start bootkube to perform
|
||||
# one-time self-hosted cluster bootstrapping.
|
||||
resource "null_resource" "bootkube-start" {
|
||||
depends_on = ["module.bootkube", "aws_autoscaling_group.controllers"]
|
||||
|
||||
# TODO: SSH to a controller's IP instead of waiting on DNS resolution
|
||||
connection {
|
||||
type = "ssh"
|
||||
host = "${aws_route53_record.controllers.fqdn}"
|
||||
user = "core"
|
||||
timeout = "15m"
|
||||
}
|
||||
|
||||
provisioner "file" {
|
||||
source = "${var.asset_dir}"
|
||||
destination = "$HOME/assets"
|
||||
}
|
||||
|
||||
provisioner "remote-exec" {
|
||||
inline = [
|
||||
"sudo mv /home/core/assets /opt/bootkube",
|
||||
"sudo systemctl start bootkube",
|
||||
]
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,96 @@
|
|||
variable "cluster_name" {
|
||||
type = "string"
|
||||
description = "Cluster name"
|
||||
}
|
||||
|
||||
variable "dns_zone" {
|
||||
type = "string"
|
||||
description = "AWS DNS Zone (e.g. aws.dghubble.io)"
|
||||
}
|
||||
|
||||
variable "dns_zone_id" {
|
||||
type = "string"
|
||||
description = "AWS DNS Zone ID (e.g. Z3PAABBCFAKEC0)"
|
||||
}
|
||||
|
||||
variable "ssh_authorized_key" {
|
||||
type = "string"
|
||||
description = "SSH public key for user 'core'"
|
||||
}
|
||||
|
||||
variable "os_channel" {
|
||||
type = "string"
|
||||
default = "stable"
|
||||
description = "Container Linux AMI channel (stable, beta, alpha)"
|
||||
}
|
||||
|
||||
variable "disk_size" {
|
||||
type = "string"
|
||||
default = "40"
|
||||
description = "The size of the disk in Gigabytes"
|
||||
}
|
||||
|
||||
variable "host_cidr" {
|
||||
description = "CIDR IPv4 range to assign to EC2 nodes"
|
||||
type = "string"
|
||||
default = "10.0.0.0/16"
|
||||
}
|
||||
|
||||
variable "controller_count" {
|
||||
type = "string"
|
||||
default = "1"
|
||||
description = "Number of controllers"
|
||||
}
|
||||
|
||||
variable "controller_type" {
|
||||
type = "string"
|
||||
default = "t2.small"
|
||||
description = "Controller EC2 instance type"
|
||||
}
|
||||
|
||||
variable "worker_count" {
|
||||
type = "string"
|
||||
default = "1"
|
||||
description = "Number of workers"
|
||||
}
|
||||
|
||||
variable "worker_type" {
|
||||
type = "string"
|
||||
default = "t2.small"
|
||||
description = "Worker EC2 instance type"
|
||||
}
|
||||
|
||||
# bootkube assets
|
||||
|
||||
variable "asset_dir" {
|
||||
description = "Path to a directory where generated assets should be placed (contains secrets)"
|
||||
type = "string"
|
||||
}
|
||||
|
||||
variable "networking" {
|
||||
description = "Choice of networking provider (calico or flannel)"
|
||||
type = "string"
|
||||
default = "calico"
|
||||
}
|
||||
|
||||
variable "network_mtu" {
|
||||
description = "CNI interface MTU (applies to calico only). Use 8981 if using instances types with Jumbo frames."
|
||||
type = "string"
|
||||
default = "1480"
|
||||
}
|
||||
|
||||
variable "pod_cidr" {
|
||||
description = "CIDR IPv4 range to assign Kubernetes pods"
|
||||
type = "string"
|
||||
default = "10.2.0.0/16"
|
||||
}
|
||||
|
||||
variable "service_cidr" {
|
||||
description = <<EOD
|
||||
CIDR IPv4 range to assign Kubernetes services.
|
||||
The 1st IP will be reserved for kube_apiserver, the 10th IP will be reserved for kube-dns, the 15th IP will be reserved for self-hosted etcd, and the 200th IP will be reserved for bootstrap self-hosted etcd.
|
||||
EOD
|
||||
|
||||
type = "string"
|
||||
default = "10.3.0.0/16"
|
||||
}
|
||||
|
|
@ -0,0 +1,264 @@
|
|||
# Workers AutoScaling Group
|
||||
resource "aws_autoscaling_group" "workers" {
|
||||
name = "${var.cluster_name}-worker ${aws_launch_configuration.worker.name}"
|
||||
load_balancers = ["${aws_elb.ingress.id}"]
|
||||
|
||||
# count
|
||||
desired_capacity = "${var.worker_count}"
|
||||
min_size = "${var.worker_count}"
|
||||
max_size = "${var.worker_count + 2}"
|
||||
default_cooldown = 30
|
||||
health_check_grace_period = 30
|
||||
|
||||
# network
|
||||
vpc_zone_identifier = ["${aws_subnet.public.*.id}"]
|
||||
|
||||
# template
|
||||
launch_configuration = "${aws_launch_configuration.worker.name}"
|
||||
|
||||
lifecycle {
|
||||
# override the default destroy and replace update behavior
|
||||
create_before_destroy = true
|
||||
ignore_changes = ["image_id"]
|
||||
}
|
||||
|
||||
tags = [{
|
||||
key = "Name"
|
||||
value = "${var.cluster_name}-worker"
|
||||
propagate_at_launch = true
|
||||
}]
|
||||
}
|
||||
|
||||
# Worker template
|
||||
resource "aws_launch_configuration" "worker" {
|
||||
image_id = "${data.aws_ami.coreos.image_id}"
|
||||
instance_type = "${var.worker_type}"
|
||||
|
||||
user_data = "${data.ct_config.worker_ign.rendered}"
|
||||
|
||||
# storage
|
||||
root_block_device {
|
||||
volume_type = "standard"
|
||||
volume_size = "${var.disk_size}"
|
||||
}
|
||||
|
||||
# network
|
||||
security_groups = ["${aws_security_group.worker.id}"]
|
||||
|
||||
lifecycle {
|
||||
// Override the default destroy and replace update behavior
|
||||
create_before_destroy = true
|
||||
}
|
||||
}
|
||||
|
||||
# Worker Container Linux Config
|
||||
data "template_file" "worker_config" {
|
||||
template = "${file("${path.module}/cl/worker.yaml.tmpl")}"
|
||||
|
||||
vars = {
|
||||
k8s_dns_service_ip = "${cidrhost(var.service_cidr, 10)}"
|
||||
k8s_etcd_service_ip = "${cidrhost(var.service_cidr, 15)}"
|
||||
ssh_authorized_key = "${var.ssh_authorized_key}"
|
||||
kubeconfig_ca_cert = "${module.bootkube.ca_cert}"
|
||||
kubeconfig_kubelet_cert = "${module.bootkube.kubelet_cert}"
|
||||
kubeconfig_kubelet_key = "${module.bootkube.kubelet_key}"
|
||||
kubeconfig_server = "${module.bootkube.server}"
|
||||
}
|
||||
}
|
||||
|
||||
data "ct_config" "worker_ign" {
|
||||
content = "${data.template_file.worker_config.rendered}"
|
||||
pretty_print = false
|
||||
}
|
||||
|
||||
# Security Group (instance firewall)
|
||||
|
||||
resource "aws_security_group" "worker" {
|
||||
name = "${var.cluster_name}-worker"
|
||||
description = "${var.cluster_name} worker security group"
|
||||
|
||||
vpc_id = "${aws_vpc.network.id}"
|
||||
|
||||
tags = "${map("Name", "${var.cluster_name}-worker")}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-icmp" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "icmp"
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
cidr_blocks = ["0.0.0.0/0"]
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-ssh" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 22
|
||||
to_port = 22
|
||||
cidr_blocks = ["0.0.0.0/0"]
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-http" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 80
|
||||
to_port = 80
|
||||
cidr_blocks = ["0.0.0.0/0"]
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-https" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 443
|
||||
to_port = 443
|
||||
cidr_blocks = ["0.0.0.0/0"]
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-flannel" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "udp"
|
||||
from_port = 8472
|
||||
to_port = 8472
|
||||
source_security_group_id = "${aws_security_group.controller.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-flannel-self" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "udp"
|
||||
from_port = 8472
|
||||
to_port = 8472
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-kubelet" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 10250
|
||||
to_port = 10250
|
||||
source_security_group_id = "${aws_security_group.controller.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-kubelet-self" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 10250
|
||||
to_port = 10250
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-kubelet-read" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 10255
|
||||
to_port = 10255
|
||||
source_security_group_id = "${aws_security_group.controller.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-kubelet-read-self" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 10255
|
||||
to_port = 10255
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "ingress-health-self" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 10254
|
||||
to_port = 10254
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-bgp" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 179
|
||||
to_port = 179
|
||||
source_security_group_id = "${aws_security_group.controller.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-bgp-self" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = "tcp"
|
||||
from_port = 179
|
||||
to_port = 179
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-ipip" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 4
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
source_security_group_id = "${aws_security_group.controller.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-ipip-self" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 4
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-ipip-legacy" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 94
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
source_security_group_id = "${aws_security_group.controller.id}"
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-ipip-legacy-self" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "ingress"
|
||||
protocol = 94
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
self = true
|
||||
}
|
||||
|
||||
resource "aws_security_group_rule" "worker-egress" {
|
||||
security_group_id = "${aws_security_group.worker.id}"
|
||||
|
||||
type = "egress"
|
||||
protocol = "-1"
|
||||
from_port = 0
|
||||
to_port = 0
|
||||
cidr_blocks = ["0.0.0.0/0"]
|
||||
ipv6_cidr_blocks = ["::/0"]
|
||||
}
|
||||
Loading…
Reference in New Issue