update code

.github/workflows/docker.yml

@@ -35,7 +35,7 @@ jobs:
             ${{ secrets.DOCKER_NAME }}/lqa-flask-app:${{ env.TAG }}
             ${{ secrets.DOCKER_NAME }}/lqa-flask-app:latest
             
-      - name: Build and Push nginx Images
+      - name: Build and Push nginx front-end
         uses: docker/build-push-action@v4
         with:
           context: '3. Mid-term/Lequanganh/nginx'
@@ -44,3 +44,14 @@ jobs:
           tags: |
             ${{ secrets.DOCKER_NAME }}/lqa-web:${{ env.TAG }}
             ${{ secrets.DOCKER_NAME }}/lqa-web:latest
+
+      - name: Build and Push nginx load-balancer
+        uses: docker/build-push-action@v4
+        with:
+          context: '3. Mid-term/Lequanganh/load-balancer'
+          file: '3. Mid-term/Lequanganh/load-balancer/Dockerfile'
+          push: true
+          tags: |
+            ${{ secrets.DOCKER_NAME }}/lqa-load-balancer:${{ env.TAG }}
+            ${{ secrets.DOCKER_NAME }}/lqa-load-balancer:latest
+

3. Mid-term/Lequanganh/ansible/inventories/inventory.yaml

@@ -2,25 +2,25 @@
 all:
   hosts:
     web_app_1:
-      ansible_host: 10.0.2.
+      ansible_host: 10.0.3.6
       ansible_user: lqa
       ansible_ssh_pass: 9876541
       ansible_become_user: root
       ansible_become_password: 9876541
     web_app_2:
-      ansible_host: 10.0.2.15
+      ansible_host: 10.0.3.7
       ansible_user: lqa
       ansible_ssh_pass: 9876541
       ansible_become_user: root
       ansible_become_password: 9876541
     db:
-      ansible_host: 10.0.2.15
+      ansible_host: 10.0.3.8
       ansible_user: lqa
       ansible_ssh_pass: 9876541
       ansible_become_user: root
       ansible_become_password: 9876541
     nginx_lb:
-      ansible_host: 10.0.2.15
+      ansible_host: 10.0.3.5
       ansible_user: lqa
       ansible_ssh_pass: 9876541
       ansible_become_user: root

3. Mid-term/Lequanganh/ansible/roles/api_1/tasks/main.yml

@@ -0,0 +1,17 @@
+- name: Run Flask container
+  community.docker.docker_container:
+    name: flask_container_1
+    image: leqa/lqa-flask-app:latest
+    command: python init.py
+    restart_policy: unless-stopped
+    env:
+      COLOR: black
+    exposed_ports:
+      - 5000
+    volumes:
+      - ~/static:/app/static
+    network_mode: my-network
+
+
+
+

3. Mid-term/Lequanganh/ansible/roles/api_2/README.md

@@ -0,0 +1,38 @@
+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

3. Mid-term/Lequanganh/ansible/roles/api_2/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+# defaults file for api

3. Mid-term/Lequanganh/ansible/roles/api_2/handlers/main.yml

@@ -0,0 +1,2 @@
+---
+# handlers file for api

3. Mid-term/Lequanganh/ansible/roles/api_2/meta/main.yml

@@ -0,0 +1,52 @@
+galaxy_info:
+  author: your name
+  description: your role description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.1
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.

3. Mid-term/Lequanganh/ansible/roles/api_2/tasks/main.yml

@@ -0,0 +1,17 @@
+- name: Run Flask container
+  community.docker.docker_container:
+    name: flask_container_1
+    image: leqa/lqa-flask-app:latest
+    command: python init.py
+    restart_policy: unless-stopped
+    env:
+      COLOR: cyan
+    exposed_ports:
+      - 5000
+    volumes:
+      - ~/static:/app/static
+    network_mode: my-network
+
+
+
+

3. Mid-term/Lequanganh/ansible/roles/api_2/tests/inventory

@@ -0,0 +1,2 @@
+localhost
+

3. Mid-term/Lequanganh/ansible/roles/api_2/tests/test.yml

@@ -0,0 +1,5 @@
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - api

3. Mid-term/Lequanganh/ansible/roles/api_2/vars/main.yml

@@ -0,0 +1,2 @@
+---
+# vars file for api

3. Mid-term/Lequanganh/ansible/roles/load-balancer/README.md

@@ -0,0 +1,38 @@
+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

3. Mid-term/Lequanganh/ansible/roles/load-balancer/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+# defaults file for load-balancer

3. Mid-term/Lequanganh/ansible/roles/load-balancer/handlers/main.yml

@@ -0,0 +1,2 @@
+---
+# handlers file for load-balancer

3. Mid-term/Lequanganh/ansible/roles/load-balancer/meta/main.yml

@@ -0,0 +1,52 @@
+galaxy_info:
+  author: your name
+  description: your role description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.1
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.

3. Mid-term/Lequanganh/ansible/roles/load-balancer/tasks/main.yml

@@ -0,0 +1,2 @@
+---
+# tasks file for load-balancer

3. Mid-term/Lequanganh/ansible/roles/load-balancer/tests/inventory

@@ -0,0 +1,2 @@
+localhost
+

3. Mid-term/Lequanganh/ansible/roles/load-balancer/tests/test.yml

@@ -0,0 +1,5 @@
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - load-balancer

3. Mid-term/Lequanganh/ansible/roles/load-balancer/vars/main.yml

@@ -0,0 +1,2 @@
+---
+# vars file for load-balancer

3. Mid-term/Lequanganh/load-balancer/Dockerfile

@@ -0,0 +1,23 @@
+FROM nginx:stable-alpine3.17-slim
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Copy the Nginx configuration file to the container
+COPY ./nginx.conf /etc/nginx/conf.d/default.conf
+
+
+# Expose port 80
+EXPOSE 80
+
+# Set up dependencies
+RUN apk update && \
+    apk add --no-cache bash
+
+# Set up a health check
+HEALTHCHECK --interval=5s \
+            --timeout=5s \
+            CMD curl --fail http://localhost:80 || exit 1
+
+# Set up the command to run the container
+CMD ["nginx", "-g", "daemon off;"]

3. Mid-term/Lequanganh/load-balancer/nginx.conf

@@ -0,0 +1,11 @@
+upstream loadbalancer {
+    server 10.0.3.6:80;
+    server 10.0.3.7:80;
+}
+server {
+    listen 80;
+    server_name localhost;
+    location / {
+        proxy_pass http://loadbalancer;
+    }   
+}   

3. Mid-term/Lequanganh/nginx/nginx.conf

@@ -1,13 +1,8 @@
-upstream loadbalancer {
-    server web_app:5000;
-    server web_app_2:5000;
-}
-
 server {
     listen 80;
     server_name localhost;
     location / {
-            proxy_pass http://loadbalancer;
+            proxy_pass localhost:5000;
         }
     location /static {
     	alias /app/static/;