こんにちは。
今日はとある書籍の環境構築メモの話題です。
今までDockerは書籍で勉強したり業務で利用したりもしていたのですが、Kubernetesはあんまりだった私。特に管理者目線で見たことは無かったし、Kubernetesのアーキテクチャなんかもあまり理解していない状態でした。
そんな私にぴったりかと思って購入したこちらの書籍
『15Stepで習得 Dockerから入るKubernetes コンテナ開発からK8s本番運用まで』（高良真穂/リックテレコム）
1章を読み終わり、ようやく2章から手を動かすために書籍に沿って環境構築するぞというところで、書籍の付録（付録１．３）についていた環境が古く、そのままでは動かせない。。
ということで色々と試行錯誤してようやく動かせるようになったのでこれから同じ状況になった方のためにも書いていきます。
書いていきます。とか言いつつ、やったことはAnsibleのPlaybookのカスタマイズだけです。
エラーメッセージに従って、Docker-CEのバージョンアップ、go言語のバージョンアップ、crictlのインストール、cri-dockerdのインストールの記述を追加した感じです。
Ansibleもろくに触ったことがなかったので、書き方から学んでいきました。。
ではカスタマイズしたPlaybookを全部べた貼りしてこの記事は結びとしますね。
Playbookにcmdを書きまくるのは良くないんだろうなとわかりつつも、スピード優先しましたｗ
Ansible有識者の方いたら是非コメント欄で教えてくださいm(__)m
- hosts: minikube connection: local become: yes gather_facts: True vars: cni_plugin_version: "v1.4.1" cni_plugin_tar: "cni-plugins-linux-amd64-{{ cni_plugin_version }}.tgz" cni_plugin_install_dir: "/opt/cni/bin" tasks: ## Docker CE のインストール # #- name: Install Git # apt: # name: git # state: present # update_cache: yes - name: Add Docker GPG key apt_key: url=https://download.docker.com/linux/ubuntu/gpg - name: Add Docker APT repository apt_repository: repo: deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ansible_distribution_release}} stable - name: Install packages apt: name: ['apt-transport-https', 'ca-certificates', 'curl', 'software-properties-common', 'nfs-common', 'conntrack'] state: present update_cache: yes - name: Install Docker-CE apt: # name: docker-ce=17.03.2~ce-0~ubuntu-xenial # name: docker-ce=17.12.1~ce-0~ubuntu # name: docker-ce=18.06.2~ce~3-0~ubuntu name: docker-ce=5:20.10.7~3-0~ubuntu-xenial state: present update_cache: yes - name: usermod -aG docker vagrant user: name: vagrant groups: docker ## カーネル設定変更 # - name: Set sysctl sysctl: name: net.bridge.bridge-nf-call-iptables value: 1 sysctl_set: yes sysctl_file: /etc/sysctl.conf state: present reload: yes ## GlusterFS のインストール # - name: Add GlusterFS Repository apt_repository: repo: ppa:gluster/glusterfs-3.12 - name: Install GlusterFS apt: name: glusterfs-client state: present update_cache: yes ## crictl のインストール # - name: Download crictl ansible.builtin.get_url: url: "https://github.com/kubernetes-sigs/cri-tools/releases/download/{{ crictl_version }}/crictl-{{ crictl_version }}-linux-amd64.tar.gz" dest: "/tmp/crictl.tar.gz" mode: '0755' vars: crictl_version: "v1.22.0" - name: Extract crictl to /usr/local/bin # become: yes ansible.builtin.unarchive: src: "/tmp/crictl.tar.gz" dest: "/usr/local/bin" remote_src: yes # extra_opts: [--strip-components=1] - name: Ensure crictl is executable ansible.builtin.file: path: "/usr/local/bin/crictl" mode: '0755' ## kubectl コマンドのインストール # - name: download get_url: #url: https://storage.googleapis.com/kubernetes-release/release/v1.13.4/bin/linux/amd64/kubectl url: https://storage.googleapis.com/kubernetes-release/release/v1.18.0/bin/linux/amd64/kubectl dest: /usr/local/bin/ mode: 0755 owner: root group: root - name: download get_url: url: https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 dest: /usr/local/bin/minikube mode: 0755 owner: root group: root ## GO のインストール # - name: Download Go binary archive get_url: url: "https://golang.org/dl/go1.22.1.linux-amd64.tar.gz" dest: "/tmp/go1.22.1.linux-amd64.tar.gz" timeout: 60 - name: Remove any previous Go installation file: path: "/usr/local/go" state: absent - name: Extract Go binary archive unarchive: src: "/tmp/go1.22.1.linux-amd64.tar.gz" dest: "/usr/local" remote_src: yes creates: "/usr/local/go" - name: Set Go path lineinfile: path: "/etc/profile.d/go.sh" line: 'export PATH=$PATH:/usr/local/go/bin' create: yes - name: Ensure profile script is executable file: path: "/etc/profile.d/go.sh" mode: '0755' - name: Check Go version command: "/usr/local/go/bin/go version" register: go_version changed_when: false - name: Show Go version debug: msg: "{{ go_version.stdout }}" ## Install cri-dockerd # - name: Install required packages for cri-dockerd apt: name: - git - make state: present update_cache: yes - name: Clone cri-dockerd repository git: repo: 'https://github.com/Mirantis/cri-dockerd.git' dest: '/tmp/cri-dockerd' version: 'v0.3.11' - name: Ensure bin directory exists file: path: "/tmp/cri-dockerd" state: directory mode: '0755' - name: Ensure bin directory exists file: path: "/tmp/cri-dockerd/bin" state: directory mode: '0755' - name: Install cri-dockerd shell: | go get && go build -o bin/cri-dockerd && install -o root -g root -m 0755 bin/cri-dockerd /usr/local/bin/cri-dockerd && install packaging/systemd/* /etc/systemd/system && sed -i -e 's,/usr/bin/cri-dockerd,/usr/local/bin/cri-dockerd,' /etc/systemd/system/cri-docker.service args: executable: /bin/bash chdir: '/tmp/cri-dockerd' environment: PATH: "/usr/local/go/bin:{{ ansible_env.PATH }}" - name: Reload systemd and enable cri-docker socket systemd: daemon_reload: yes name: cri-docker.socket enabled: yes state: started ## containernetworking-plugins install # - name: Download CNI plugins ansible.builtin.get_url: url: "https://github.com/containernetworking/plugins/releases/download/{{ cni_plugin_version }}/{{ cni_plugin_tar }}" dest: "/tmp/{{ cni_plugin_tar }}" - name: Create CNI plugin install directory ansible.builtin.file: path: "{{ cni_plugin_install_dir }}" state: directory mode: '0755' - name: Extract CNI plugins ansible.builtin.unarchive: src: "/tmp/{{ cni_plugin_tar }}" dest: "{{ cni_plugin_install_dir }}" remote_src: yes - name: Remove the CNI plugin tar file ansible.builtin.file: path: "/tmp/{{ cni_plugin_tar }}" state: absent - name: Ensure CNI config directory exists file: path: /etc/cni/net.d state: directory mode: '0755' - name: Deploy CNI network configuration copy: content: | { "cniVersion": "0.4.0", "name": "mynetwork", "type": "bridge", "bridge": "cnibr0", "isGateway": true, "ipMasq": true, "ipam": { "type": "host-local", "subnet": "10.22.0.0/16", "routes": [{"dst": "0.0.0.0/0"}] } } dest: "/etc/cni/net.d/10-mynetwork.conf" ## Start Minikube # - name: start Minikube temporary command: /usr/local/bin/minikube start --vm-driver none # --cni=custom --memory=1500mb args: chdir: /root register: mini ## Wait start containers # - name: waiting command: sleep 30 ## stop minikube # - name: stopping Minikube command: /usr/local/bin/minikube stop ## Wait stop completely # - name: waiting command: sleep 30 ## move .minikube and .kube # #- name: cp /root/.kube /home/vagrant/.kube # copy: # src: /root/.kube # dest: /home/vagrant/.kube # owner: vagrant # group: vagrant # mode: 0755 #- name: cp /root/.minikube /home/vagrant/.minikube # copy: # src: /root/.minikube # dest: /home/vagrant/.minikube # owner: vagrant # group: vagrant # mode: 0755 - shell: mv /root/.kube /home/vagrant/.kube - shell: chown -R vagrant:vagrant /home/vagrant/.kube - shell: mv /root/.minikube /home/vagrant/.minikube - shell: chown -R vagrant:vagrant /home/vagrant/.minikube - name: change path command: sed -i -e 's|root|home\/vagrant|g' /home/vagrant/.kube/config ## restart minikube under /home/vagrant # #- name: restart minikube # become: yes # become_user: vagrant # command: sudo /usr/local/bin/minikube start --vm-driver none # args: # chdir: /home/vagrant
