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Add a blurb explicitly pointing out why RabbitMQ doesn't come with a default HEALTHCHECK #1395

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Jan 16, 2019
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Add a blurb explicitly pointing out why RabbitMQ doesn't come with a default HEALTHCHECK #1395

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4 changes: 4 additions & 0 deletions rabbitmq/content.md
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Expand Up @@ -177,6 +177,10 @@ Alternatively, it is possible to use the `RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS` e

Additional configuration keys would be specified as a list. For example, configuring both [`channel_max`](https://www.rabbitmq.com/configure.html#config-items) and [`auth_backends`](https://www.rabbitmq.com/ldap.html#overview) would look something like `-e RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS="-rabbit channel_max 4007 auth_backends [rabbit_auth_backend_ldap,rabbit_auth_backend_internal]"`. Note that some variables such as for `auth_backends` require their value(s) to be enclosed in brackets, and for multiple values explicitly including the comma as a delimiter.

### Health/Liveness/Readiness Checking

See [the "Official Images" FAQ](https://github.com/docker-library/faq#healthcheck) and [the discussion on docker-library/rabbitmq#174 (especially the large comment by Michael Klishin from RabbitMQ upstream)](https://github.com/docker-library/rabbitmq/pull/174#issuecomment-452002696) for a detailed explanation of why this image does not come with a default `HEALTHCHECK` defined, and for suggestions for implementing your own health/liveness/readiness checks.

## Connecting to the daemon

```console
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