如何在 Ubuntu 14 中安装最新的生产级 Kubernetes [英] How to install latest production-level Kubernetes in Ubuntu 14

问题描述

1. 遵循 ->

3. 最后，我在 Ubuntu 16 和 kubeadm 中进行了尝试.https://kubernetes.io/docs/getting-started-guides/kubeadm/

kubeadm init 命令成功完成，没有任何问题，但是当我尝试 kubectl cluster-info 时，它显示 与服务器 localhost 的连接:8080 被拒绝

有什么帮助吗?(主要是我想在 Ubuntu 14 中安装 K8)

更新 1

第 3 点(带有 kubeadm 的 Ubuntu 16 上的 K8)通过运行解决

 sudo cp/etc/kubernetes/admin.conf $HOME/须藤 chown $(id -u):$(id -g) $HOME/admin.conf导出 KUBECONFIG=$HOME/admin.conf

解决方案

我玩得很开心 :-)

因此，Ubuntu 14.04 上的 Kubernetes 1.6.4(可信赖):

• 有 nsenter 内置 &已安装(nsenter 是一个硬的 kubelet 依赖项，在 14.04 中不存在)
• 修补 kubelet 和 kubeadm 包以移除 systemd 依赖(并用 upstart 脚本替换它)
• 在kubeadm init期间手动启动kubelet(因为kubeadm只支持systemd风格的init系统)

我已经为上述内容创建了一个概念验证脚本.它可以在:https://gist.github.com/lenartj/0b264cb70e6cb504df833cb5054def8-kubernetes-sh

您可以按照官方指南安装 kubeadm 和 创建集群.只需跳过 kubeadm 和 kubelet 安装步骤并使用上面的脚本.

有一个演示:https://asciinema.org/a/124160

步骤是:

1. 安装docker:curl -sSL https://get.docker.com/|sh
2. 安装apt-transport-https:apt-get update &&apt-get install -y apt-transport-https
3. 添加 kubernetes 存储库密钥:curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg |apt-key a
4. 添加 kubernetes-xenial 存储库:echo 'deb http://apt.kubernetes.io/kubernetes-xenial main' >/etc/apt/sources.list.d/kubernetes.list
5. 安装kubectl、kubernetes-cni以及kubelet的依赖:apt-get install -y kubectl kubernetes-cni binutils ebtables socat
6. 运行脚本以创建 kubelet 和 kubeadm 包以及 nsenter 二进制文件:curl -sSL https://gist.github.com/lenartj/0b264cb70e6cb50dfdef37084f892554#file-trusty-kubernetes-sh |bash
7. 安装 nsenter 二进制文件:cp -v/tmp/tmp.xxxxx/nsenter/usr/local/bin
8. 安装 kubelet 和 kubeadm 包:dpkg -i/tmp/tmp.xxxxx/*-patched
9. 初始化master:kubeadm init
10. 启动 kubelet(同时 kubeadm 正在等待控制平面):service kubelet start
11. 配置 kubectl 管理员凭据:cp/etc/kubernetes/admin.conf $HOME/;chown $(id -u):$(id -g) $HOME/admin.conf;export KUBECONFIG=$HOME/admin.conf
12. 安装 Pod 网络(weave-net):kubectl apply -f https://git.io/weave-kube-1.6

这不是一个很好的 &干净的解决方案，但它有效.

1. Followed -> https://kubernetes.io/docs/getting-started-guides/ubuntu/manual/

After I clone as they mentioned in doc. git clone --depth 1 https://github.com/kubernetes/kubernetes.git. I could not find the file cluster/ubuntu/config-default.sh to configure cluster.

Ok, I left it default and try to run KUBERNETES_PROVIDER=ubuntu ./kube-up.sh but there is no verify-kube-binaries.sh file

root@ultron:/home/veeru# KUBERNETES_PROVIDER=ubuntu ./kube-up.sh
... Starting cluster using provider: ubuntu
... calling verify-prereqs
Skeleton Provider: verify-prereqs not implemented
... calling verify-kube-binaries
./kube-up.sh: line 44: verify-kube-binaries: command not found

Outdated Documentation?

2. From official git repo, I have downloaded 1.6.4 version (Branch->Tag->v1.6.4) After cluster/ubuntu/config-default.sh configuration I ran KUBERNETES_PROVIDER=ubuntu ./kube-up.sh in cluster directory. But some of the links are outdated!

3. Finally I tried in Ubuntu 16 with kubeadm.https://kubernetes.io/docs/getting-started-guides/kubeadm/

The kubeadm init command successfully completed without any problem, but when I try to kubectl cluster-info, it is showing The connection to the server localhost:8080 was refused

Any help?(Mainly I want to install K8 in Ubuntu 14)

UPDATE 1

Point 3(K8 on Ubuntu 16 with kubeadm) is resolved by running

  sudo cp /etc/kubernetes/admin.conf $HOME/
  sudo chown $(id -u):$(id -g) $HOME/admin.conf
  export KUBECONFIG=$HOME/admin.conf

解决方案

I have had some fun with this :-)

So, Kubernetes 1.6.4 on Ubuntu 14.04 (Trusty):

• have nsenter built & installed (nsenter is a hard kubelet dependency and is not present in 14.04)
• patch up the kubelet and kubeadm packages to remove the systemd dependency (and repace it with an upstart script)
• start kubelet manually during kubeadm init (because kubeadm only supports the systemd-style init system)

I've created a proof of concept script to the above. It's available at: https://gist.github.com/lenartj/0b264cb70e6cb50dfdef37084f892554#file-trusty-kubernetes-sh

You can follow the official guide installing kubeadm and creating the cluster. Just skip the kubeadm and kubelet installation steps and use the script above instead.

There is a demo at: https://asciinema.org/a/124160

The steps are:

1. Install docker: curl -sSL https://get.docker.com/ | sh
2. Install apt-transport-https: apt-get update && apt-get install -y apt-transport-https
3. Add kubernetes repository key: curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key a
4. Add kubernetes-xenial repository: echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' >/etc/apt/sources.list.d/kubernetes.list
5. Install kubectl, kubernetes-cni and dependencies of kubelet: apt-get install -y kubectl kubernetes-cni binutils ebtables socat
6. Run the script to create the kubelet and kubeadm packages and the nsenter binary: curl -sSL https://gist.github.com/lenartj/0b264cb70e6cb50dfdef37084f892554#file-trusty-kubernetes-sh | bash
7. Install the nsenter binary: cp -v /tmp/tmp.xxxxx/nsenter /usr/local/bin
8. Install kubelet and kubeadm packages: dpkg -i /tmp/tmp.xxxxx/*-patched
9. Initialize the master: kubeadm init
10. Start the kubelet (while kubeadm is waiting for the control plane): service kubelet start
11. Configure kubectl admin credentials: cp /etc/kubernetes/admin.conf $HOME/; chown $(id -u):$(id -g) $HOME/admin.conf; export KUBECONFIG=$HOME/admin.conf
12. Install Pod networking (weave-net): kubectl apply -f https://git.io/weave-kube-1.6

It's not a nice & clean solution but it works.

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