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Updated cloud-configs and AWS CoreOS instructions to Kubernetes 0.8.1 and informing users about better picking CoreOS AWS images. Refs #3543
This commit is contained in:
Paulo Pires
parent
b1f5b3f287
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20eb0b2bf3
@ -10,13 +10,13 @@ The example below creates an elastic Kubernetes cluster with 3 worker nodes and
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* Cluster bootstrapping using [cloud-config](https://coreos.com/docs/cluster-management/setup/cloudinit-cloud-config)
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* Cross container networking with [flannel](https://github.com/coreos/flannel#flannel)
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* Auto worker registration with [kube-register](https://github.com/kelseyhightower/kube-register#kube-register)
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* Kubernetes v0.4.2 [official binaries](https://github.com/GoogleCloudPlatform/kubernetes/releases/tag/v0.4.2)
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* Kubernetes v0.8.1 [official binaries](https://github.com/GoogleCloudPlatform/kubernetes/releases/tag/v0.8.1)
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## Prerequisites
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* [kubecfg CLI](aws/kubecfg.md)
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* [aws CLI](http://aws.amazon.com/cli)
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* CoreOS 490.0.0+
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* [CoreOS image for AWS](https://coreos.com/docs/running-coreos/cloud-providers/ec2/#choosing-a-channel)
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## Starting a Cluster
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@ -46,7 +46,7 @@ aws cloudformation describe-stacks --stack-name kubernetes
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### Manually
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The following commands use the CoreOS 490.0.0 alpha AMI `ami-e18dc5d1` from the `us-west-2` region. For a list of different regions and corresponding AMI IDs see the [CoreOS EC2 cloud provider documentation](https://coreos.com/docs/running-coreos/cloud-providers/ec2/#choosing-a-channel).
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The following commands shall use the latest CoreOS alpha AMI for the `us-west-2` region. For a list of different regions and corresponding AMI IDs see the [CoreOS EC2 cloud provider documentation](https://coreos.com/docs/running-coreos/cloud-providers/ec2/#choosing-a-channel).
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#### Create the Kubernetes Security Group
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@ -64,8 +64,10 @@ aws ec2 authorize-security-group-ingress --group-name kubernetes --source-securi
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#### Launch the master
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*Attention:* Replace ```<ami_image_id>``` bellow for a [suitable version of CoreOS image for AWS](https://coreos.com/docs/running-coreos/cloud-providers/ec2/#choosing-a-channel).
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```
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aws ec2 run-instances --image-id ami-e18dc5d1 --key-name <keypair> \
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aws ec2 run-instances --image-id <ami_image_id> —key-name <keypair> \
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--region us-west-2 --security-groups kubernetes --instance-type m3.medium \
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--user-data file://master.yaml
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```
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@ -101,16 +103,20 @@ Edit `node.yaml` and replace all instances of `<master-private-ip>` with the **p
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### Launch 3 worker nodes
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*Attention:* Replace ```<ami_image_id>``` bellow for a [suitable version of CoreOS image for AWS](https://coreos.com/docs/running-coreos/cloud-providers/ec2/#choosing-a-channel).
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```
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aws ec2 run-instances --count 3 --image-id ami-e18dc5d1 --key-name <keypair> \
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aws ec2 run-instances --count 3 --image-id <ami_image_id> --key-name <keypair> \
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--region us-west-2 --security-groups kubernetes --instance-type m3.medium \
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--user-data file://node.yaml
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```
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### Add additional worker nodes
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*Attention:* Replace ```<ami_image_id>``` bellow for a [suitable version of CoreOS image for AWS](https://coreos.com/docs/running-coreos/cloud-providers/ec2/#choosing-a-channel).
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```
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aws ec2 run-instances --count 1 --image-id ami-e18dc5d1 --key-name <keypair> \
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aws ec2 run-instances --count 1 --image-id <ami_image_id> --key-name <keypair> \
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--region us-west-2 --security-groups kubernetes --instance-type m3.medium \
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--user-data file://node.yaml
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```
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@ -1,26 +1,97 @@
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#cloud-config
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---
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write_files:
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- path: /opt/bin/waiter.sh
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owner: root
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content: |
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#! /usr/bin/bash
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until curl http://127.0.0.1:4001/v2/machines; do sleep 2; done
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coreos:
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fleet:
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etcd_servers: http://127.0.0.1:4001
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metadata: role=master
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etcd:
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name: etcd
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addr: $private_ipv4:4001
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bind-addr: 0.0.0.0
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peer-addr: $private_ipv4:7001
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cluster-active-size: 1
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http-read-timeout: 86400.0
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snapshot: true
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units:
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- name: setup-network-environment.service
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command: start
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content: |
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[Unit]
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Description=Setup Network Environment
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Documentation=https://github.com/kelseyhightower/setup-network-environment
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Requires=network-online.target
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After=network-online.target
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[Service]
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ExecStartPre=-/usr/bin/mkdir -p /opt/bin
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/k8s/setup-network-environment
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ExecStartPre=/usr/bin/chmod +x /opt/bin/setup-network-environment
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ExecStart=/opt/bin/setup-network-environment
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RemainAfterExit=yes
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Type=oneshot
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- name: etcd.service
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command: start
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content: |
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[Unit]
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Description=etcd
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Requires=setup-network-environment.service
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After=setup-network-environment.service
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[Service]
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EnvironmentFile=/etc/network-environment
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User=etcd
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PermissionsStartOnly=true
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ExecStart=/usr/bin/etcd \
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--name ${DEFAULT_IPV4} \
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--addr ${DEFAULT_IPV4}:4001 \
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--bind-addr 0.0.0.0 \
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--cluster-active-size 1 \
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--data-dir /var/lib/etcd \
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--http-read-timeout 86400 \
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--peer-addr ${DEFAULT_IPV4}:7001 \
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--snapshot true
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Restart=always
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RestartSec=10s
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- name: fleet.socket
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command: start
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content: |
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[Socket]
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ListenStream=/var/run/fleet.sock
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- name: fleet.service
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command: start
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content: |
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[Unit]
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Description=fleet daemon
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Wants=etcd.service
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After=etcd.service
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Wants=fleet.socket
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After=fleet.socket
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[Service]
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Environment="FLEET_ETCD_SERVERS=http://127.0.0.1:4001"
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Environment="FLEET_METADATA=role=master"
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ExecStart=/usr/bin/fleetd
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Restart=always
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RestartSec=10s
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- name: etcd-waiter.service
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command: start
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content: |
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[Unit]
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Description=etcd waiter
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Wants=network-online.target
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Wants=etcd.service
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After=etcd.service
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After=network-online.target
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Before=flannel.service
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Before=setup-network-environment.service
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[Service]
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ExecStartPre=/usr/bin/chmod +x /opt/bin/waiter.sh
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ExecStart=/usr/bin/bash /opt/bin/waiter.sh
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RemainAfterExit=true
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Type=oneshot
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- name: flannel.service
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command: start
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content: |
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[Unit]
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Wants=etcd-waiter.service
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After=etcd-waiter.service
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Requires=etcd.service
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After=etcd.service
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After=network-online.target
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@ -30,9 +101,9 @@ coreos:
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[Service]
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Type=notify
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ExecStartPre=-/usr/bin/mkdir -p /opt/bin
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ExecStartPre=/usr/bin/wget -N -P /opt/bin http://storage.googleapis.com/k8s/flanneld
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/k8s/flanneld
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ExecStartPre=/usr/bin/chmod +x /opt/bin/flanneld
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ExecStartPre=-/usr/bin/etcdctl mk /coreos.com/network/config '{"Network":"10.0.0.0/16"}'
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ExecStartPre=/usr/bin/etcdctl mk /coreos.com/network/config '{"Network":"10.244.0.0/16", "Backend": {"Type": "vxlan"}}'
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ExecStart=/opt/bin/flanneld
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- name: kube-apiserver.service
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command: start
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@ -45,12 +116,14 @@ coreos:
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[Service]
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ExecStartPre=-/usr/bin/mkdir -p /opt/bin
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.5.4/bin/linux/amd64/kube-apiserver
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.8.1/bin/linux/amd64/kube-apiserver
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ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-apiserver
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ExecStart=/opt/bin/kube-apiserver \
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--address=0.0.0.0 \
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--port=8080 \
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--portal_net=10.244.0.0/16 \
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--etcd_servers=http://127.0.0.1:4001 \
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--public_address_override=$private_ipv4 \
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--logtostderr=true
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Restart=always
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RestartSec=10
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@ -64,7 +137,7 @@ coreos:
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After=kube-apiserver.service
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[Service]
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.5.4/bin/linux/amd64/kube-controller-manager
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.8.1/bin/linux/amd64/kube-controller-manager
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ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-controller-manager
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ExecStart=/opt/bin/kube-controller-manager \
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--master=127.0.0.1:8080 \
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@ -81,7 +154,7 @@ coreos:
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After=kube-apiserver.service
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[Service]
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.5.4/bin/linux/amd64/kube-scheduler
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.8.1/bin/linux/amd64/kube-scheduler
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ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-scheduler
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ExecStart=/opt/bin/kube-scheduler --master=127.0.0.1:8080
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Restart=always
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@ -94,12 +167,14 @@ coreos:
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Documentation=https://github.com/kelseyhightower/kube-register
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Requires=kube-apiserver.service
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After=kube-apiserver.service
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Requires=fleet.service
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After=fleet.service
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[Service]
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ExecStartPre=/usr/bin/wget -N -P /opt/bin http://storage.googleapis.com/k8s/kube-register
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/k8s/kube-register
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ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-register
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ExecStart=/opt/bin/kube-register \
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--metadata=role=knode \
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--metadata=role=node \
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--fleet-endpoint=unix:///var/run/fleet.sock \
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--api-endpoint=http://127.0.0.1:8080
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Restart=always
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@ -1,14 +1,23 @@
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#cloud-config
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coreos:
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fleet:
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etcd_servers: http://<master-private-ip>:4001
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metadata: role=knode
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units:
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- name: etcd.service
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mask: true
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- name: fleet.service
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command: start
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content: |
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[Unit]
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Description=fleet daemon
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Wants=fleet.socket
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After=fleet.socket
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[Service]
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Environment="FLEET_ETCD_SERVERS=http://<master-private-ip>:4001"
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Environment="FLEET_METADATA=role=node"
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ExecStart=/usr/bin/fleetd
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Restart=always
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RestartSec=10s
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- name: flannel.service
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command: start
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content: |
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@ -20,7 +29,7 @@ coreos:
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[Service]
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Type=notify
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ExecStartPre=-/usr/bin/mkdir -p /opt/bin
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ExecStartPre=/usr/bin/wget -N -P /opt/bin http://storage.googleapis.com/k8s/flanneld
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/k8s/flanneld
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ExecStartPre=/usr/bin/chmod +x /opt/bin/flanneld
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ExecStart=/opt/bin/flanneld -etcd-endpoints http://<master-private-ip>:4001
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- name: docker.service
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@ -50,7 +59,7 @@ coreos:
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[Service]
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ExecStartPre=-/usr/bin/mkdir -p /opt/bin
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ExecStartPre=/usr/bin/wget -N -P /opt/bin http://storage.googleapis.com/k8s/setup-network-environment
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/k8s/setup-network-environment
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ExecStartPre=/usr/bin/chmod +x /opt/bin/setup-network-environment
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ExecStart=/opt/bin/setup-network-environment
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RemainAfterExit=yes
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@ -65,7 +74,7 @@ coreos:
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After=setup-network-environment.service
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[Service]
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.5.4/bin/linux/amd64/kube-proxy
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.8.1/bin/linux/amd64/kube-proxy
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ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-proxy
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ExecStart=/opt/bin/kube-proxy \
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--etcd_servers=http://<master-private-ip>:4001 \
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@ -83,12 +92,12 @@ coreos:
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[Service]
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EnvironmentFile=/etc/network-environment
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.5.4/bin/linux/amd64/kubelet
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ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.8.1/bin/linux/amd64/kubelet
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ExecStartPre=/usr/bin/chmod +x /opt/bin/kubelet
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ExecStart=/opt/bin/kubelet \
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--address=0.0.0.0 \
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--port=10250 \
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--hostname_override=${DEFAULT_IPV4} \
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--hostname_override=$private_ipv4 \
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--etcd_servers=http://<master-private-ip>:4001 \
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--logtostderr=true
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Restart=always
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