mirror of
https://github.com/spring-projects/spring-boot.git
synced 2024-07-15 01:07:30 +08:00
Add a 'Docker Compose Support' section to the reference docs
Update the reference documentation with details about the recently introduced Docker Compose Support. Closes gh-35026
This commit is contained in:
parent
e19aa81813
commit
a0b854024b
@ -49,6 +49,7 @@ dependencies {
|
||||
asciidoctorExtensions(project(path: ":spring-boot-project:spring-boot-actuator-autoconfigure"))
|
||||
asciidoctorExtensions(project(path: ":spring-boot-project:spring-boot-autoconfigure"))
|
||||
asciidoctorExtensions(project(path: ":spring-boot-project:spring-boot-devtools"))
|
||||
asciidoctorExtensions(project(path: ":spring-boot-project:spring-boot-docker-compose"))
|
||||
|
||||
autoConfiguration(project(path: ":spring-boot-project:spring-boot-autoconfigure", configuration: "autoConfigurationMetadata"))
|
||||
autoConfiguration(project(path: ":spring-boot-project:spring-boot-actuator-autoconfigure", configuration: "autoConfigurationMetadata"))
|
||||
|
@ -26,6 +26,8 @@ include::features/task-execution-and-scheduling.adoc[]
|
||||
|
||||
include::features/testing.adoc[]
|
||||
|
||||
include::features/docker-compose.adoc[]
|
||||
|
||||
include::features/developing-auto-configuration.adoc[]
|
||||
|
||||
include::features/kotlin.adoc[]
|
||||
|
@ -0,0 +1,210 @@
|
||||
[[features.docker-compose]]
|
||||
== Docker Compose Support
|
||||
Docker Compose is a popular technology that can be used to define and manage multiple containers for services that your application needs.
|
||||
A `compose.yml` file is typically created next to your application which defines and configures service containers.
|
||||
|
||||
A typical workflow with Docker Compose is to run `docker compose up`.
|
||||
Work on your application with it connecting to started services.
|
||||
Then run `docker compose down` when you are finished.
|
||||
|
||||
To help with this workflow, the `spring-boot-docker-compose` module can be used. When this modules is included as a dependency Spring Boot will do the following:
|
||||
|
||||
* Search for a `compose.yml` and other common compose filenames in your application directory
|
||||
* Call `docker compose up` with the discovered `compose.yml`
|
||||
* Create service connection beans for each supported container
|
||||
* Call `docker compose down` when the application is shutdown
|
||||
|
||||
NOTE: The `docker compose` or `docker-compose` CLI application needs to be on your path in order for Spring Boot’s support to work correctly.
|
||||
|
||||
|
||||
|
||||
[[features.docker-compose.service-connections]]
|
||||
=== Service Connections
|
||||
A service connection is a connection to any remote service.
|
||||
Spring Boot’s auto-configuration can consume the details of a service connection and use them to establish a connection to a remote service.
|
||||
When doing so, the connection details take precedence over any connection-related configuration properties.
|
||||
|
||||
When using Spring Boot’s Docker Compose support, service connections are established to the port mapped by the container.
|
||||
|
||||
NOTE: Docker compose is usually used in such a way that the ports inside the container are mapped to ephemeral ports on your computer.
|
||||
For example, A Postgres server my run inside the container using port 5432 but be mapped to a totally different port locally.
|
||||
The service connection will always discover and use the locally mapped port.
|
||||
|
||||
Service connections are established by using the image name of the container.
|
||||
The following service connections are currently supported:
|
||||
|
||||
|
||||
|===
|
||||
| Connection Details | Matched on
|
||||
|
||||
| `ElasticsearchConnectionDetails`
|
||||
| Containers named "elasticsearch"
|
||||
|
||||
| `JdbcConnectionDetails`
|
||||
| Containers named "mariadb", "mysql" or "postgres"
|
||||
|
||||
| `MongoConnectionDetails`
|
||||
| Containers named "mongo"
|
||||
|
||||
| `R2dbcConnectionDetails`
|
||||
| Containers named "mariadb", "mysql" or "postgres"
|
||||
|
||||
| `RabbitConnectionDetails`
|
||||
| Containers named "rabbitmq"
|
||||
|
||||
| `RedisConnectionDetails`
|
||||
| Containers named "redis"
|
||||
|
||||
| `ZipkinConnectionDetails`
|
||||
| Containers named "zipkin".
|
||||
|===
|
||||
|
||||
|
||||
|
||||
[[features.docker-compose.custom-images]]
|
||||
=== Custom Images
|
||||
Sometimes you may need to use your own version of an image to provide a service.
|
||||
You can use any custom image as long as it behaves in the same way as the standard image.
|
||||
Specifically, any environment variables that the standard image supports must also be used in your custom image.
|
||||
|
||||
If your image uses a different name, you can use a label in your `compose.yml` file so that Spring Boot can provide a service connection.
|
||||
Use a label named `org.springframework.boot.service-connection` to provide the service name.
|
||||
|
||||
For example:
|
||||
|
||||
[source,yaml,indent=0]
|
||||
----
|
||||
services:
|
||||
redis:
|
||||
image: 'mycompany/mycustomredis:7.0'
|
||||
ports:
|
||||
- '6379'
|
||||
labels:
|
||||
org.springframework.boot.service-connection: redis
|
||||
----
|
||||
|
||||
|
||||
|
||||
[[features.docker-compose.skipping]]
|
||||
=== Skipping Specific Containers
|
||||
If you have a container image defined in your `compose.yml` that you don’t want connected to your application you can use a label to ignore it.
|
||||
Any container with labeled with `org.springframework.boot.ignore` will be ignored by Spring Boot.
|
||||
|
||||
For example:
|
||||
|
||||
[source,yaml,indent=0]
|
||||
----
|
||||
services:
|
||||
redis:
|
||||
image: 'redis:7.0'
|
||||
ports:
|
||||
- '6379'
|
||||
labels:
|
||||
org.springframework.boot.ignore: true
|
||||
----
|
||||
|
||||
|
||||
|
||||
[[features.docker-compose.specific-file]]
|
||||
=== Using a Specific Compose File
|
||||
If your compose file is not in the same directory as your application, or if it’s named differently, you can use configprop:spring.docker.compose.file[] in your `application.properties` or `application.yaml` to point to a different file.
|
||||
Properties can be defined as an exact path or a path that’s relative to your application.
|
||||
|
||||
For example:
|
||||
|
||||
[source,yaml,indent=0,subs="verbatim",configprops,configblocks]
|
||||
----
|
||||
spring:
|
||||
docker:
|
||||
compose:
|
||||
file: "../my-compose.yml"
|
||||
----
|
||||
|
||||
|
||||
|
||||
[[features.docker-compose.readiness]]
|
||||
=== Waiting for Container Readiness
|
||||
Containers started by Docker Compose may take some time to become fully ready.
|
||||
The recommended way of checking for readiness is to add a `healthcheck` section under the service definition in your `compose.yml` file.
|
||||
|
||||
Since it's not uncommon for `healthcheck` configuration to be omitted from `compose.yml` files, Spring Boot also checks directly for service readiness.
|
||||
By default, a container is considered ready when a TCP/IP connection can be established to its mapped port.
|
||||
|
||||
You can disable this on a per-container basis by add a `org.springframework.boot.readiness-check.tcp.disable` label in your `compose.yml` file.
|
||||
|
||||
For example:
|
||||
|
||||
[source,yaml,indent=0]
|
||||
----
|
||||
services:
|
||||
redis:
|
||||
image: 'redis:7.0'
|
||||
ports:
|
||||
- '6379'
|
||||
labels:
|
||||
org.springframework.boot.readiness-check.tcp.disable: true
|
||||
----
|
||||
|
||||
You can also change timeout values in your `application.properties` or `application.yaml` file:
|
||||
|
||||
[source,yaml,indent=0,subs="verbatim",configprops,configblocks]
|
||||
----
|
||||
spring:
|
||||
docker:
|
||||
compose:
|
||||
readiness:
|
||||
tcp:
|
||||
connect-timeout: 10s
|
||||
read-timeout: 5s
|
||||
----
|
||||
|
||||
The overall timeout can be configured using configprop:spring.docker.compose.readiness.timeout[].
|
||||
|
||||
TIP: You can also provide your own `ServiceReadinessCheck` implementations and register them in the `spring.factories` file.
|
||||
|
||||
|
||||
|
||||
[[features.docker-compose.lifecycle]]
|
||||
=== Controlling the Docker Compose Lifecycle
|
||||
By default Spring Boot calls `docker compose up` when your application starts and `docker compose down` when it's shutdown.
|
||||
If you prefer to have different lifecycle management you can use the configprop:spring.docker.compose.lifecycle-management[] property.
|
||||
|
||||
The following values are supported:
|
||||
|
||||
* `none` - Do not start or stop Docker Compose
|
||||
* `start-only` - Start Docker Compose on application startup and leave it running
|
||||
* `start-and-stop` - Start Docker Compose on application startup and stop it on application shutdown
|
||||
|
||||
In addition you can use the configprop:spring.docker.compose.startup.command[] property to change if `docker up` or `docker start` is used.
|
||||
The configprop:spring.docker.compose.shutdown.command[] allows you to configure if `docker down` or `docker stop` is used.
|
||||
|
||||
The following example shows how lifecycle management can be configured:
|
||||
|
||||
[source,yaml,indent=0,subs="verbatim",configprops,configblocks]
|
||||
----
|
||||
spring:
|
||||
docker:
|
||||
compose:
|
||||
lifecycle-management: start-and-stop
|
||||
startup:
|
||||
command: start
|
||||
shutdown:
|
||||
command: stop
|
||||
timeout: 1m
|
||||
----
|
||||
|
||||
|
||||
|
||||
[[features.docker-compose.profiles]]
|
||||
=== Activating Docker Compose Profiles
|
||||
Docker Compose profiles are similar to Spring profiles in that they let you adjust your Docker Compose configuration for specific environments.
|
||||
If you want to activate a specific Docker Compose profile you can use the configprop:spring.docker.compose.profiles.active[] property in your `application.properties` or `application.yaml` file:
|
||||
|
||||
[source,yaml,indent=0,subs="verbatim",configprops,configblocks]
|
||||
----
|
||||
spring:
|
||||
docker:
|
||||
compose:
|
||||
profiles:
|
||||
active: "myprofile"
|
||||
----
|
Loading…
Reference in New Issue
Block a user