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• 여러 서비스와 애플리케이션 간의 작업 흐름을 관리합니다.

Ubuntu Repo 이슈

apt-get clean
rm -rf /var/lib/apt/lists/*
apt-get update -o Acquire::CompressionTypes::Order::=gz

python 설치

root@cp-k8s:~/ansible# apt install -y python3.10 python3.10-venv
root@cp-k8s:~/ansible# python3.10 -m venv /opt/python3.10-venv
root@cp-k8s:~/ansible# source /opt/python3.10-venv/bin/activate
(python3.10-venv) root@cp-k8s:/opt# pip install ansible

1.2 파일 생성 예제

• 이해하기 쉽도록 root 패스워드 및 등록을 진행합니다.

#cat /etc/hosts
192.168.2.10 cp-k8s
192.168.2.101 w1-k8s
192.168.2.102 w2-k8s
192.168.2.103 w3-k8s

cp-k8s에서 ssh-keygen 생성
# ssh-keygen

모든 노드 root 패스워드 설정
root / vagrant

cp-k8s에서 모든 노드의 root로 접근할 수 있도록 등록
# ssh-copy-id root@cp-k8s
# ssh-copy-id root@w1-k8s
# ssh-copy-id root@w2-k8s
# ssh-copy-id root@w3-k8s

(1) 인벤토리 파일 (hosts)

#cat ~/hosts
[all]
cp-k8s ansible_host=192.168.12.10    
w1-k8s ansible_host=192.168.12.101   
w2-k8s ansible_host=192.168.12.102  
w3-k8s ansible_host=192.168.12.103  

(2) Playbook (file_management.yaml)

---
- name: Manage files and directories
  hosts: all
  become: yes   #sudo

  tasks:
    - name: Create a directory
      file:
        path: /opt/myapp
        state: directory
        mode: '0755'

    - name: Create a file with specific content
      copy:
        dest: /opt/myapp/config.txt
        content: |
          [settings]
          setting1 = value1
          setting2 = value2

    - name: Ensure a file is absent
      file:
        path: /opt/myapp/old_config.txt
        state: absent

(3) 실행

apt install ansible 
ansible-playbook -i hosts file_management.yaml

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2.1 python 및 가상환경 설치

apt#apt search python3.9
...
apt#apt install -y python3.10 python3.10-venv
python3#python3.10 -m venv /opt/kubespray-2.25-venv

#
source /opt/kubespray-2.2325-venv/bin/activate
pip install -U pip
pip install -r requirements.txt

2.2 Kubespray 구성

디렉토리 생성 및 이동

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• mkdir -p /opt/

  kubespray

  -2.23-git cd /opt/kubespray-2.23-git

  kubespray 소스 다운로드

  코드 블럭
  git clone https://github.com/kubernetes-sigs/kubespray.git -b release-2.23

  디렉토리 이동

  코드 블럭
  25 cd /opt~/kubespray-2.23-git/kubespray

• kubespray를 위한 python3 가상환경 구성

  코드 블럭
  python3 -m venv /opt/kubespray-2.23-venv source /opt/kubespray-2.23-venv/bin/activate

• pip 패키지 설치

  코드 블럭
  pip install -U pip pip install -r requirements.txt pip install -r requirements.txt

• 디렉토리 이동

  코드 블럭
  cd ~/kubespray

• inventory

  코드 블럭
  cp -R /opt~/kubespray-2.23-git/kubespray/inventory/sample /opt/kubespray-2.23-git/~/kubespray/inventory/k8s cd ~/opt/kubespray-2.23-git/kubespray/inventory/k8s vi inventory.ini

  코드 블럭

  [all] cp-k8s-master01 ansible_host=192.168.1102.2110 w1-k8s-master02 ansible_host=192.168.1102.22101 w2-k8s-master03 ansible_host=192.168.1102.23102 k8s-worker01 ansible_host=192.168.110.24 k8s-worker02w2-k8s ansible_host=192.168.1102.25103 [kube_control_plane] k8scp-master01 k8s-master02 k8s-master03 [etcd] k8scp-master01 k8s-master02 k8s-master03 [kube_node] w1-k8s w2-worker01k8s w3-k8s-worker02 [calico_rr] [k8s_cluster:children] kube_control_plane kube_node calico_rr

2.3 Kuberntes 배포

• ssh 접속 확인

  코드 블럭
  ansible -i ~/opt/kubespray-2.23-git/kubespray/inventory/k8s/inventory.ini -m ping all

• 클러스터 배포

  코드 블럭
  ansible-playbook -i /opt/kubespray-2.23-git~/kubespray/inventory/k8s/inventory.ini /opt/kubespary-2.23-git~/kubespray/cluster.yml

• node 상태 확인

  코드 블럭
  kubectl get nodes -o wide

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