Configure Your Nginx build & deploy pipeline

Zerops provides a customizable build and runtime environment for your static content.

Zerops supports different build environments:

If you just need to deploy your static content, use the manual deploy via Zerops CLI.

Add zerops.yml to your repository

Start by adding zerops.yml file to the root of your repository and modify it to fit your application:

zerops:
  # define hostname of your service
  - setup: app
    # ==== how to build your application ====
    build:
      # REQUIRED. Set the base technology for the build environment:
      base: nodejs@latest

      # OPTIONAL. Set the operating system for the build environment.
      # os: ubuntu

      # OPTIONAL. Customise the build environment by installing additional packages
      # or tools to the base build environment.
      # prepareCommands:
      #   - apt-get something
      #   - curl something else

      # REQUIRED. Build your application
      buildCommands:
        - npm i
        - npm run build

      # REQUIRED. Select which files / folders to deploy after
      # the build has successfully finished
      deployFiles:
        - dist
        - package.json
        - node_modules

      # OPTIONAL. Which files / folders you want to cache for the next build.
      # Next builds will be faster when the cache is used.
      cache: node_modules

    # ==== how to run your application ====
    run:
      # OPTIONAL. Sets the base technology for the runtime environment:
      base: nginx@latest

      # OPTIONAL. Customise the runtime Nginx environment by installing additional
      # dependencies to the base Nginx runtime environment.
      # prepareCommands:
      #   - apt-get something
      #   - curl something else

      # OPTIONAL. Run one or more commands each time a new runtime container
      # is started or restarted. These commands are triggered before
      # your Nginx application is started.
      # init:
      #  - rm -rf ./cache

      # OPTIONAL. Customise the folder that will be used as the root of the publicly
      # accessible web server content. Enter the path relative to the /var/www folder.
      documentRoot: public

      # OPTIONAL. Sets the custom Nginx configuration. The file must be deployed in
      # the runtime container. Enter the path to the file relative to the /var/www folder
      siteConfigPath: site_config.tmpl

The top-level element is always zerops.

Setup

The first element setup contains the hostname of your service. A runtime service with the same hostname must exist in Zerops. Zerops supports the definition of multiple runtime services in a single zerops.yml. This is useful when you use a monorepo. Just add multiple setup elements in your zerops.yml:

zerops:
  # definition for app service
  - setup: app
    build: ...
    run: ...

  # definition for api service
  - setup: api
    build: ...
    run: ...

Each service configuration contains at least two sections: build and run. Both sections are required to build and deploy your Nginx application in Zerops. If you'd like to use a readiness check, add an optional deploy section.

Build pipeline configuration

Zerops supports different build environments:

If you just need to deploy your static content, use the manual deploy via Zerops CLI.

Runtime configuration

base

OPTIONAL. Sets the base technology for the runtime environment. If you don't specify the run.base attribute, Zerops keeps the current Nginx version for your runtime.

Following options are available for Nginx builds:

nginx@1.22
nginx@latest

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build:
      # REQUIRED. Sets the base technology for the build environment:
      base: nodejs@latest
      ...

    # ==== how to run your application ====
    run:
      # OPTIONAL. Sets the base technology for the runtime environment:
        base: nginx@latest
      ...

The base runtime environment contains Alpine 3.19, the selected major version of Nginx, Zerops command line tool and composer, git and wget.

Info

You can change the base environment when you need to. Just simply modify the zerops.yml in your repository.

If you need to install more technologies to the runtime environment, set multiple values as a yaml array. For example:

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build:
      # REQUIRED. Sets the base technology for the build environment:
      base: nodejs@latest
      ...

    # ==== how to run your application ====
    run:
      # OPTIONAL. Sets the base technology for the runtime environment:
      base:
        - nginx@latest
      prepareCommands:
        - zsc add go@latest
      ...

See the full list of supported run base environments.

To customise your build environment use the prepareCommands attribute.

os

OPTIONAL. Sets the operating system for the runtime environment.

Following options are available:

alpine
ubuntu

Default value is alpine.

We are currently using following os version:

Alpine 3.19
Ubuntu 22.04

Caution

The os version is fixed and cannot be customised.

ports

OPTIONAL. Specifies one or more internal ports on which your application will listen.

Info

If no ports are specified, Zerops adds the port TCP 80 automatically.

Caution

If you want the web server to listen on other port(s) than :80, you must customize your web server configuration as well.

Projects in Zerops represent a group of one or more services. Services can be of different types (runtime services, databases, message brokers, object storage, etc.). All services of the same project share a dedicated private network. To connect to a service within the same project, just use the service hostname and its internal port.

For example, to connect to a Nginx static service with hostname = "app" and port = 80 from another service of the same project, simply use app:80. Read more about how to access a Nginx static service.

Info

Do not use the port :443. All the incoming traffic is terminated on the Zerops internal balancer where the SSL certificate is installed and the request is forwarded to your Nginx static service as a http:// on the port :80.

Each port has following attributes:

parameter	description
port	Defines the port number. You can set any port number between 10 and 65435. Ports outside this interval are reserved for internal Zerops systems.
protocol	Optional. Defines the protocol. Allowed values are `TCP` or `UDP`. Default value is `TCP`.
httpSupport	Optional. `httpSupport = true` is the default setting for TCP protocol. Set `httpSupport = false` if a web server isn't running on the port. Zerops uses this information for the configuration of public access. `httpSupport = true` is available only in combination with the TCP protocol.

prepareCommands

OPTIONAL. Customises the Nginx runtime environment by installing additional dependencies or tools to the runtime base environment.

The base Nginx environment contains Alpine 3.19, the selected major version of Nginx, Zerops command line tool and composer, git and wget. To install additional packages or tools add one or more prepare commands:

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build:
      ...

    # ==== how to run your application ====
    run:
      # OPTIONAL. Customise the runtime environment by installing additional packages
      # or tools to the base Nginx runtime environment.
      prepareCommands:
        - apt-get something
        - curl something else
      ...

When the first deploy with a defined prepare attribute is triggered, Zerops will

create a prepare runtime container
optionally: copy selected folders or files from your build container
run the prepareCommands commands in the defined order

Command exit code

If any command fails, it returns an exit code other than 0 and the deploy is canceled. Read the prepare runtime log to troubleshoot the error. If the command ends successfully, it returns the exit code 0 and Zerops triggers the following command. When all prepareCommands commands are finished, your custom runtime environment is ready for the deploy phase.

Cache of your custom runtime environment

Some packages or tools can take a long time to install. Therefore, Zerops caches your custom runtime environment after the installation of your custom packages or tools is completed. When the second or following deploy is triggered, Zerops will use the custom runtime cache from the previous deploy if following conditions are met:

Content of the build.addToRunPrepare and run.prepareCommands attributes didn't change from the previous deploy
The custom runtime cache wasn't invalidated in the Zerops GUI.

To invalidate the Zerops custom runtime cache go to yyy

When the prepare cache is used, Zerops doesn't create a prepare runtime container and executes the deployment of your application directly.

Single or separated shell instances

You can configure your prepare commands to be run in a single shell instance or multiple shell instances. The format is identical to build commands.

Copy folders or files from your build container

The prepare runtime container contains Alpine 3.19, the selected major version of Nginx, Zerops command line tool and composer, git and wget.

The prepare runtime container does not contain your application code nor the built application. If you need to copy some folders or files from the build container to the runtime container (e.g. a configuration file) use the addToRunPrepare attribute in the build section.

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build:
      ...
      addToRunPrepare: ./runtime-config.yml

    # ==== how to run your application ====
    run:
      # OPTIONAL. Customise the runtime environment by installing additional packages
      # or tools to the base Nginx runtime environment.
      prepareCommands:
        - apt-get something
        - curl something else
      ...

In the example above Zerops will copy the runtime-config.yml file from your build container after the build has finished into the new prepare runtime container. The copied files and folders will be available in the xxx folder in the new prepare runtime container before the prepare commands are triggered.

initCommands

OPTIONAL. Defines one or more commands to be run each time a new runtime container is started or a container is restarted.

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build: ...

    # ==== how to run your application ====
    run:
      # OPTIONAL. Run one or more commands each time a new runtime container
      # is started or restarted. These commands are triggered before
      # your Nginx application is started.
      initCommands:
        - rm -rf ./cache

These commands are triggered in the runtime container before your Nginx application is started via the start command.

Use init commands to clean or initialise your application cache or similar operations.

Caution

The init commands will delay the start of your application each time a new runtime container is started (including the horizontal scaling or when a runtime container is restarted.

Do not use the init commands for customising your runtime environment. Use the run:prepareCommands attribute instead.

Command exit code

If any of the initCommands fails, it returns an exit code other than 0, but deploy is not canceled. After all init commands are finished, regardless of the status code, the application is started. Read the runtime log to troubleshoot the error.

Single or separated shell instances

You can configure your initCommands to be run in a single shell instance or multiple shell instances. The format is identical to build commands.

documentRoot

OPTIONAL. Customizes the folder that will be used as the root of the publicly accessible web server content.

Info

By default, the document root is configured to /var/www.

Customize the folder that will be used as the root of the publicly accessible web server content. Enter the path relative to the /var/www folder. E.g. documentRoot: public will set the web server document root to /var/www/public.

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build: ...

    # ==== how to run your application ====
    run:
      # OPTIONAL. Customise the folder that will be used as the root of the publicly
      # accessible web server content. Enter the path relative to the /var/www folder.
      documentRoot: public

siteConfigPath

OPTIONAL. Sets the custom Nginx configuration.

Info

If you don't set your custom configuration Zerops applies the default configuration.

The file must be deployed in the runtime container. Enter the path to the file relative to the /var/www folder. Read more about the web server customization.

envVariables

OPTIONAL. Defines the environment variables for the runtime environment.

Enter one or more env variables in following format:

zerops:
  # define hostname of your service
  - setup: app
    # ==== how to run your application ====
    run:
      # OPTIONAL. Defines the env variables for the runtime environment:
      envVariables:
        DB_NAME: db
        DB_HOST: db
        DB_USER: db
        DB_PASS: ${db_password}

Read more about environment variables in Zerops.

health check

OPTIONAL. Defines a health check.

healthCheck requires either one httpGet object or one exec object.

httpGet

Configures the health check to request a local URL using a HTTP GET method.

Following attributes are available:

Parameter	Description
port	Defines the port of the HTTP GET request. The readiness check will trigger a GET request on `http://127.0.0.1:{port}/{path}`
path	Defines the URL path of the HTTP GET request. The readiness check will trigger a GET request on `http://127.0.0.1:{port}/{path}`
host	Optional. The readiness check is triggered from inside of your runtime container so it always uses the localhost (`127.0.0.1`). If you need to add a `host` to the request header, specify it in the `host` attribute.
scheme	Optional. The readiness check is triggered from inside of your runtime container so no https is required. If your application requires a https request, set `scheme: https`

Example:

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build: ...

    # ==== how to run your application ====
    run:
      # OPTIONAL. Customise the folder that will be used as the root of the publicly
      # accessible web server content. Enter the path relative to the /var/www folder.
      documentRoot: public

      # OPTIONAL. Define a health check with a HTTP GET request option.
      # Configures the check on http://127.0.0.1:80/status
      healthCheck:
        httpGet:
          port: 80
          path: /status

Read more about how the [health check works] in Zerops.

exec

Configures the health check to run a local command. Following attributes are available:

Parameter	Description
command	Defines a local command to be run. The command has access to the same environment variables as your Nginx application. A single string is required. If you need to run multiple commands create a shell script or, use a multiline format as in the example below.

Example:

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build: ...

    # ==== how to run your application ====
    run:
      # OPTIONAL. Customise the folder that will be used as the root of the publicly
      # accessible web server content. Enter the path relative to the /var/www folder.
      documentRoot: public

      # OPTIONAL. Define a health check with a shell command.
      healthCheck:
        exec:
          command: |
            touch grass
            rm -rf life
            mv /outside/user /home/user

Read more about how the [health check works] in Zerops.

Deploy configuration

readiness check

OPTIONAL. Defines a readiness check. Read more about how the readiness check works in Zerops.

readinessCheck requires either one httpGet object or one exec object.

httpGet

Configures the readiness check to request a local URL using a http GET method.

Following attributes are available:

Parameter	Description
port	Defines the port of the HTTP GET request. The readiness check will trigger a GET request on `http://127.0.0.1:{port}/{path}`
path	Defines the URL path of the HTTP GET request. The readiness check will trigger a GET request on `http://127.0.0.1:{port}/{path}`
host	Optional. The readiness check is triggered from inside of your runtime container so it always uses the localhost (`127.0.0.1`). If you need to add a `host` to the request header, specify it in the `host` attribute.
scheme	Optional. The readiness check is triggered from inside of your runtime container so no https is required. If your application requires a https request, set `scheme: https`

Example:

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build: ...

    # ==== how to deploy your application ====
    deploy:
      # OPTIONAL. Define a readiness check with a HTTP GET request option.
      # Configures the check on http://127.0.0.1:80/status
      readinessCheck:
        httpGet:
          port: 80
          path: /status

    # ==== how to run your application ====
    run: ...

Read more about how the readiness check works in Zerops.

exec

Configures the readiness check to run a local command. Following attributes are available:

Parameter	Description
command	Defines a local command to be run. The command has access to the same environment variables as your Nginx application. A single string is required. If you need to run multiple commands create a shell script or, use a multiline format as in the example below.

Example:

zerops:
  # hostname of your service
  - setup: app
    # ==== how to build your application ====
    build: ...

    # ==== how to deploy your application ====
    deploy:
      # OPTIONAL. Define a readiness check with a HTTP GET request option.
      # Configures the check on http://127.0.0.1:80/status
      readinessCheck:
        exec:
          command: |
            touch grass
            rm -rf life
            mv /outside/user /home/user

Read more about how the readiness check works in Zerops.

Add zerops.yml to your repository​

Setup​

Build pipeline configuration​

Runtime configuration​

base​

os​

ports​

prepareCommands​

Command exit code​

Cache of your custom runtime environment​

Single or separated shell instances​

Copy folders or files from your build container​

initCommands​

Command exit code​

Single or separated shell instances​

documentRoot​

siteConfigPath​

envVariables​

health check​

httpGet​

exec​

Deploy configuration​

readiness check​

httpGet​

exec​

Add zerops.yml to your repository

Setup

Build pipeline configuration

Runtime configuration

base

os

ports

prepareCommands

Command exit code

Cache of your custom runtime environment

Single or separated shell instances

Copy folders or files from your build container

initCommands

Command exit code

Single or separated shell instances

documentRoot

siteConfigPath

envVariables

health check

httpGet

exec

Deploy configuration

readiness check

httpGet

exec