Merge branch 'master' into lab05

Author: tjann7

.gitignore

@@ -178,3 +178,6 @@ cython_debug/
 .pypirc
 terraform/yandex_cloud/key.json
 terraform/yandex_cloud/terraform.rc
+ansible/roles/web_app/vars/main.yml
+ansible/ansible.builtin.env
+terraform/yandex_cloud/authorized_key.json

README.md

@@ -4,6 +4,25 @@
 
 Welcome to the DevOps Engineering course labs! These hands-on labs are designed to guide you through various aspects of DevOps practices and principles. As you progress through the labs, you'll gain practical experience in application development, containerization, testing, infrastructure setup, CI/CD processes, and more.
 
+## Lab Syllabus
+
+Lab 1: Web Application Development
+Lab 2: Containerization
+Lab 3: Continuous Integration
+Lab 4: Infrastructure as Code & Terraform
+Lab 5: Configuration Management
+Lab 6: Ansible Automation
+Lab 7: Observability, Logging, Loki Stack
+Lab 8: Monitoring & Prometheus
+Lab 9: Kubernetes & Declarative Manifests
+Lab 10: Helm Charts & Library Charts
+Lab 11: Kubernetes Secrets Management (Vault, ConfigMaps)
+Lab 12: Kubernetes ConfigMaps & Environment Variables
+Lab 13: GitOps with ArgoCD
+Lab 14: StatefulSet Optimization
+Lab 15: Kubernetes Monitoring & Init Containers
+Lab 16: IPFS & Fleek Decentralization
+
 ## Architecture
 
 This repository has a master branch containing an introduction. Each new lab assignment will be added as a markdown file with a lab number.

ansible/inventory/default_aws_ec2.yml

@@ -1,3 +1,4 @@
+
 ---
 all:
   hosts:

ansible/playbooks/dev/main.yaml

@@ -1,6 +1,7 @@
+
 ---
 - name: install Docker
   hosts: all
   become: true
   roles:
-    - role: docker
+    - role: docker

ansible/roles/docker/README.md

@@ -1,5 +1,6 @@
 # Docker Role
 
+
 This role installs and configures Docker and Docker Compose.
 
 ## Requirements
@@ -33,3 +34,18 @@ This role installs and configures Docker and Docker Compose.
 7. Install completion check
 
 
+=======
+Docker and Docker Compose installation via Ansible role.
+
+## Requirements
+
+- Ansible 2.9+
+
+## Playbook Instance
+
+```yaml
+- hosts: all
+
+  roles:
+    - roles/docker	
+```

ansible/roles/docker/defaults/main.yml

@@ -0,0 +1,68 @@
+---
+# Edition can be one of: 'ce' (Community Edition) or 'ee' (Enterprise Edition).
+docker_edition: 'ce'
+docker_packages:
+  - "docker-{{ docker_edition }}"
+  - "docker-{{ docker_edition }}-cli"
+  - "docker-{{ docker_edition }}-rootless-extras"
+  - "containerd.io"
+  - docker-buildx-plugin
+docker_packages_state: present
+docker_obsolete_packages:
+  - docker
+  - docker.io
+  - docker-engine
+  - docker-doc
+  - docker-compose
+  - docker-compose-v2
+  - podman-docker
+  - containerd
+  - runc
+
+# Service options.
+docker_service_manage: true
+docker_service_state: started
+docker_service_enabled: true
+docker_restart_handler_state: restarted
+
+# Docker Compose Plugin options.
+docker_install_compose_plugin: true
+docker_compose_package: docker-compose-plugin
+docker_compose_package_state: present
+
+# Docker Compose options.
+docker_install_compose: false
+docker_compose_version: "v2.32.1"
+docker_compose_arch: "{{ ansible_architecture }}"
+docker_compose_url: "https://github.com/docker/compose/releases/download/{{ docker_compose_version }}/docker-compose-linux-{{ docker_compose_arch }}"
+docker_compose_path: /usr/local/bin/docker-compose
+
+# Enable repo setup
+docker_add_repo: true
+
+# Docker repo URL.
+docker_repo_url: https://download.docker.com/linux
+
+# Used only for Debian/Ubuntu/Pop!_OS/Linux Mint. Switch 'stable' to 'nightly' if needed.
+docker_apt_release_channel: stable
+# docker_apt_ansible_distribution is a workaround for Ubuntu variants which can't be identified as such by Ansible,
+# and is only necessary until Docker officially supports them.
+docker_apt_ansible_distribution: "{{ 'ubuntu' if ansible_distribution in ['Pop!_OS', 'Linux Mint'] else ansible_distribution }}"
+docker_apt_arch: "{{ 'arm64' if ansible_architecture == 'aarch64' else 'armhf' if ansible_architecture == 'armv7l' else 'amd64' }}"
+docker_apt_repository: "deb [arch={{ docker_apt_arch }} signed-by=/etc/apt/keyrings/docker.asc] {{ docker_repo_url }}/{{ docker_apt_ansible_distribution | lower }} {{ ansible_distribution_release }} {{ docker_apt_release_channel }}"
+docker_apt_ignore_key_error: true
+docker_apt_gpg_key: "{{ docker_repo_url }}/{{ docker_apt_ansible_distribution | lower }}/gpg"
+docker_apt_gpg_key_checksum: "sha256:1500c1f56fa9e26b9b8f42452a553675796ade0807cdce11975eb98170b3a570"
+docker_apt_filename: "docker"
+
+# Used only for RedHat/CentOS/Fedora.
+docker_yum_repo_url: "{{ docker_repo_url }}/{{ (ansible_distribution == 'Fedora') | ternary('fedora','centos') }}/docker-{{ docker_edition }}.repo"
+docker_yum_repo_enable_nightly: '0'
+docker_yum_repo_enable_test: '0'
+docker_yum_gpg_key: "{{ docker_repo_url }}/centos/gpg"
+
+# A list of users who will be added to the docker group.
+docker_users: []
+
+# Docker daemon options as a dict
+docker_daemon_options: {}

ansible/roles/docker/tasks/install_compose.yml

@@ -1,5 +1,5 @@
+
 - name: Install Docker Compose
   ansible.builtin.apt:
     name: "docker-compose-plugin"
     state: present
-  

ansible/roles/docker/tasks/install_docker.yml

@@ -1,3 +1,4 @@
+
 - name: Install prerequisites
   apt:
     name:
@@ -37,4 +38,4 @@
    name: docker
    state: started
    enabled: true
-  
+  

ansible/roles/docker/tasks/main.yml

@@ -1,3 +1,4 @@
+
 - name: Install Docker & compose
   include_tasks: install_docker.yml
 

app_go/Dockerfile

@@ -16,6 +16,6 @@ USER $ADMIN_USER
 RUN go build -o randomizer main.go
 
 # Explicitly specify port
-EXPOSE 3000
+EXPOSE 5500
 
 CMD ["./randomizer"]