> For the complete documentation index, see [llms.txt](https://a7246c5516ab4c80cdfe21ca2be3e40c.gitbook.io/kubernetes-basics/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://a7246c5516ab4c80cdfe21ca2be3e40c.gitbook.io/kubernetes-basics/config.md).

# config

Certainly! In the context of software and systems, configuration refers to the settings and parameters that determine the behavior of applications or infrastructure components. Here are some common usages of configuration with examples:

#### 1. **Application Configuration:**

* **Usage:**
  * Configuring settings specific to an application.
* **Example:**

  ```yaml
  # application.yaml
  server:
    port: 8080
  database:
    url: jdbc:mysql://localhost:3306/mydatabase
    username: myuser
    password: mypassword
  ```

#### 2. **Environment Configuration:**

* **Usage:**
  * Adapting application behavior based on the environment (e.g., development, production).
* **Example:**

  ```yaml
  # application.yaml
  spring:
    profiles:
      active: dev
  ```

#### 3. **Database Configuration:**

* **Usage:**
  * Configuring database connection parameters.
* **Example:**

  ```yaml
  # database.properties
  database.url=jdbc:mysql://localhost:3306/mydatabase
  database.username=myuser
  database.password=mypassword
  ```

#### 4. **Logging Configuration:**

* **Usage:**
  * Configuring log levels, formats, and destinations.
* **Example:**

  ```yaml
  # logback.xml
  <configuration>
  <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
  <encoder>
  <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
  </encoder>
  </appender>
  <root level="INFO">
  <appender-ref ref="console" />
  </root>
  </configuration>
  ```

#### 5. **Security Configuration:**

* **Usage:**
  * Configuring security settings, authentication, and authorization.
* **Example:**

  ```yaml
  # security-config.yaml
  security:
    basic:
      enabled: true
    oauth2:
      client-id: my-client-id
      client-secret: my-client-secret
  ```

#### 6. **Server Configuration:**

* **Usage:**
  * Configuring server settings such as ports and protocols.
* **Example:**

  ```yaml
  # server.properties
  server.port=8080
  server.ssl.enabled=true
  server.ssl.key-store=classpath:keystore.jks
  server.ssl.key-store-password=mypassword
  ```

#### 7. **Cloud Service Configuration:**

* **Usage:**
  * Configuring settings for cloud services (e.g., AWS, Azure, Google Cloud).
* **Example:**

  ```yaml
  # aws-config.properties
  aws.access-key-id=my-access-key
  aws.secret-access-key=my-secret-key
  aws.region=us-east-1
  ```

#### 8. **Containerization Configuration:**

* **Usage:**
  * Configuring settings specific to containerized environments.
* **Example:**

  ```yaml
  # docker-compose.yml
  version: "3"
  services:
    myapp:
      image: myapp:latest
      ports:
        - "8080:8080"
  ```

#### 9. **Infrastructure Configuration:**

* **Usage:**
  * Configuring infrastructure-as-code parameters.
* **Example:**

  ```yaml
  # terraform.tfvars
  region = "us-west-2"
  instance_type = "t2.micro"
  ```

#### 10. **Continuous Integration/Continuous Deployment (CI/CD) Configuration:**

````
- **Usage:**
  - Configuring build, test, and deployment pipelines.
- **Example:**
  ```yaml
  # .gitlab-ci.yml
  stages:
    - build
    - test
    - deploy

  build:
    script:
      - echo "Building the application..."

  test:
    script:
      - echo "Running tests..."

  deploy:
    script:
      - echo "Deploying to production..."
  ```
````

#### 11. **Feature Toggle Configuration:**

````
- **Usage:**
  - Enabling or disabling features dynamically.
- **Example:**
  ```yaml
  # feature-toggles.yaml
  features:
    my-feature:
      enabled: true
    experimental-feature:
      enabled: false
  ```
````

#### 12. **Microservices Configuration:**

````
- **Usage:**
  - Configuring inter-service communication and discovery.
- **Example:**
  ```yaml
  # service-registry.properties
  service.registry.url=http://registry-server:8761
  ```
````

#### 13. **Application Secrets Configuration:**

````
- **Usage:**
  - Managing sensitive information (e.g., API keys, passwords).
- **Example:**
  ```yaml
  # application-secrets.yaml
  api-key: my-api-key
  db-password: my-db-password
  ```
````

These examples cover a variety of configuration scenarios, showcasing how configuration files are used to customize and adapt the behavior of applications and systems in different contexts.