From 88873829730d746143bf5d6ebf069cda3822831d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lucas=20K=C3=A4ldstr=C3=B6m?= Date: Thu, 28 Sep 2017 22:39:46 +0300 Subject: [PATCH] Update kubeadm install doc for v1.8 --- docs/setup/independent/install-kubeadm.md | 142 +++++++++++++--------- 1 file changed, 87 insertions(+), 55 deletions(-) diff --git a/docs/setup/independent/install-kubeadm.md b/docs/setup/independent/install-kubeadm.md index 445c4a3108ea1..dee81552235b3 100644 --- a/docs/setup/independent/install-kubeadm.md +++ b/docs/setup/independent/install-kubeadm.md @@ -10,7 +10,7 @@ This page shows how to use install kubeadm. {% capture prerequisites %} -* One or more machines running Ubuntu 16.04+, CentOS 7 or HypriotOS v1.0.1+ +* One or more machines running Ubuntu 16.04+, Debian 9, CentOS 7, RHEL 7, Fedora 25/26 (YMMV) or HypriotOS v1.0.1+ * 1GB or more of RAM per machine (any less will leave little room for your apps) * Full network connectivity between all machines in the cluster (public or private network is fine) * Unique MAC address and product_uuid for every node @@ -55,73 +55,105 @@ documentation for the plugins about what port(s) those need. ## Installing Docker On each of your machines, install Docker. -Version 1.12 is recommended, but v1.10 and v1.11 are known to work as well. -Versions 1.13 and 17.03+ have not yet been tested and verified by the Kubernetes node team. -For installation instructions, see -[Install Docker](https://docs.docker.com/engine/installation/). +Version v1.12 is recommended, but v1.11, v1.13 and 17.03 are known to work as well. +Versions 17.06+ _might work_, but have not yet been tested and verified by the Kubernetes node team. -## Installing kubectl +You can use the following commands to install Docker on your system: -On each of your machines, -[install kubectl](/docs/tasks/tools/install-kubectl/). -You only need kubectl on the master and/or your workstation, but it can be -useful to have on the other nodes as well. +{% capture docker_ubuntu %} -## Installing kubelet and kubeadm +Install Docker from Ubuntu's repositories: + +```bash +apt-get update +apt-get install -y docker.io +``` + +or install Docker CE 17.03 from Docker's repositories for Ubuntu or Debian: + +```bash +apt-get update && apt-get install -y curl apt-transport-https +curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add - +cat </etc/apt/sources.list.d/docker.list +deb https://download.docker.com/linux/$(lsb_release -si | tr '[:upper:]' '[:lower:]') $(lsb_release -cs) stable +EOF +apt-get update && apt-get install -y docker-ce=$(apt-cache madison docker-ce | grep 17.03 | head -1 | awk '{print $3}') +``` + +{% endcapture %} + +{% capture docker_centos %} + +```bash +yum install -y docker +systemctl enable docker && systemctl start docker +``` + +{% endcapture %} + +{% assign docker_tab_names = "Ubuntu, Debian or HypriotOS;CentOS, RHEL or Fedora" | split: ';' | compact %} +{% assign docker_tab_contents = site.emptyArray | push: docker_ubuntu | push: docker_centos %} + +## Installing kubeadm, kubelet and kubectl You will install these packages on all of your machines: +* `kubeadm`: the command to bootstrap the cluster. + * `kubelet`: the component that runs on all of the machines in your cluster and does things like starting pods and containers. -* `kubeadm`: the command to bootstrap the cluster. +* `kubectl`: the command line util to talk to your cluster. -**Note:** If you already have kubeadm installed, you should do a `apt-get update && -apt-get upgrade` or `yum update` to get the latest version of kubeadm. See the -kubeadm release notes if you want to read about the different [kubeadm -releases](https://github.com/kubernetes/kubeadm/blob/master/CHANGELOG.md). - -For each machine: - -* SSH into the machine and become root if you are not already (for example, - run `sudo -i`). - -* If the machine is running Ubuntu or HypriotOS, run: - - ``` bash - apt-get update && apt-get install -y apt-transport-https - curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - - cat </etc/apt/sources.list.d/kubernetes.list - deb http://apt.kubernetes.io/ kubernetes-xenial main - EOF - apt-get update - apt-get install -y kubelet kubeadm - ``` - -* If the machine is running CentOS, run: - - ``` bash - cat < /etc/yum.repos.d/kubernetes.repo - [kubernetes] - name=Kubernetes - baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64 - enabled=1 - gpgcheck=1 - repo_gpgcheck=1 - gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg - EOF - setenforce 0 - yum install -y kubelet kubeadm - systemctl enable kubelet && systemctl start kubelet - ``` +Please proceed with executing the following commands based on your OS as the `root` user by SSH-ing +into each machine. You may for example become `root` by executing `sudo -i`. -The kubelet is now restarting every few seconds, as it waits in a crashloop for -kubeadm to tell it what to do. +{% capture ubuntu %} + +```bash +apt-get update && apt-get install -y apt-transport-https +curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - +cat </etc/apt/sources.list.d/kubernetes.list +deb http://apt.kubernetes.io/ kubernetes-xenial main +EOF +apt-get update +apt-get install -y kubelet kubeadm kubectl +``` + +{% endcapture %} + +{% capture centos %} + +```bash +cat < /etc/yum.repos.d/kubernetes.repo +[kubernetes] +name=Kubernetes +baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64 +enabled=1 +gpgcheck=1 +repo_gpgcheck=1 +gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg + https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg +EOF +setenforce 0 +yum install -y kubelet kubeadm +systemctl enable kubelet && systemctl start kubelet +``` **Note:** Disabling SELinux by running `setenforce 0` is required to allow -containers to access the host filesystem, which is required by pod networks for -example. You have to do this until SELinux support is improved in the kubelet. +containers to access the host filesystem, which is required for the `kubeadm init` +process to complete successfully. You have to do this until SELinux support is +improved in the kubelet. + +{% endcapture %} + +{% assign tab_names = "Ubuntu, Debian or HypriotOS;CentOS, RHEL or Fedora" | split: ';' | compact %} +{% assign tab_contents = site.emptyArray | push: ubuntu | push: centos %} + +{% include tabs.md %} + +The kubelet is now restarting every few seconds, as it waits in a crashloop for +kubeadm to tell it what to do. {% endcapture %}