如何配置头盔图以选择Rabbitmq社区插件？

时间：2020-01-11 01:59:53

标签： rabbitmq kubernetes-helm

目标：要在我的 rabbitmq-ha 掌舵图中使用https://www.rabbitmq.com/community-plugins.html中的Rabbitmq社区插件。

服务器不附带的所有插件都需要安装。插件以.ez存档（带有元数据的zip文件）的形式分发。必须将文件复制到 $ RABBITMQ_PLUGINS_DIR 指定的插件目录之一。

问题：如何将Rabbitmq社区插件的.ev文件注入到图表中使用？

背景：

以我的示例为例，我尝试将最新版本的社区插件 rabbitmq_delayed_message_exchange 安装到 rabbitmq-ha 的最新稳定版本中。

通过将插件名称添加到我的 values.yaml 中来标识该插件的名称：

amqp-rabbitmq:
  extraPlugins: |
    rabbitmq_delayed_message_exchange,

当我

helm install example .  --debug

它生成

# Source: example/charts/amqp-rabbitmq/templates/configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: example-amqp-rabbitmq
  namespace: default
  labels:
    app: amqp-rabbitmq
    chart: amqp-rabbitmq-1.38.2
    release: example
    heritage: Helm
data:
  enabled_plugins: |
    [
      rabbitmq_delayed_message_exchange,
      rabbitmq_consistent_hash_exchange,
      rabbitmq_management,
      rabbitmq_peer_discovery_k8s
    ].

  rabbitmq.conf: |
    ## RabbitMQ configuration
    ## Ref: https://github.com/rabbitmq/rabbitmq-server/blob/master/docs/rabbitmq.conf.example

    ## Authentification

    ## Clustering
    cluster_formation.peer_discovery_backend  = rabbit_peer_discovery_k8s
    cluster_formation.k8s.host = kubernetes.default.svc.cluster.local
    cluster_formation.k8s.address_type = hostname
    cluster_formation.node_cleanup.interval = 10
    # Set to false if automatic cleanup of absent nodes is desired.
    # This can be dangerous, see http://www.rabbitmq.com/cluster-formation.html#node-health-checks-and-cleanup.
    cluster_formation.node_cleanup.only_log_warning = true
    cluster_partition_handling = autoheal
    ## The default "guest" user is only permitted to access the server
    ## via a loopback interface (e.g. localhost)
    loopback_users.guest = false

    management.load_definitions = /etc/definitions/definitions.json

    ## Memory-based Flow Control threshold
    vm_memory_high_watermark.absolute = 256MB

    ## Auth HTTP Backend Plugin

    ## LDAP Plugin

    ## MQTT Plugin

    ## Web MQTT Plugin

    ## STOMP Plugin

    ## Web STOMP Plugin

    ## Prometheus Plugin

    ## AMQPS support

并创建3个 k8s_amqp-rabbitmq_example-amqp-rabbitmq- n _default _... 容器。

每个容器中的日志显示

2020-01-11 01:21:16.826 [info] <0.8.0> Server startup complete; 6 plugins started.

* rabbitmq_management

* rabbitmq_web_dispatch

* rabbitmq_consistent_hash_exchange

* rabbitmq_peer_discovery_k8s

* rabbitmq_management_agent

* rabbitmq_peer_discovery_common

2020-01-11 01:23:06.954 [info] <0.529.0> node 'rabbit@example-amqp-rabbitmq-1.example-amqp-rabbitmq-discovery.default.svc.cluster.local' up

2020-01-11 01:23:12.776 [info] <0.529.0> rabbit on node 'rabbit@example-amqp-rabbitmq-1.example-amqp-rabbitmq-discovery.default.svc.cluster.local' up

我可以成功登录rabbitmq，创建交易所，队列等。

但是，找不到所需的 rabbitmq_delayed_message_exchange 插件。

  • 在日志文件的任何地方都没有提到它。
  • 它未显示在 rabbit @ example-amqp-rabbitmq- n .example-amqp-rabbitmq-discovery.default.svc.cluster.local-plugins-expand < / strong>文件夹和其他插件。

当我的应用程序尝试使用已安装的舵机Rabbitmq-ha创建延迟交换时，它会得到：

'Error: Connection closed: 503 (COMMAND-INVALID) with message "COMMAND_INVALID - unknown exchange type 'x-delayed-message'"

它可与Rabbitmq的非kubernetes实例一起使用，在这里我可以轻松地安装插件。

我花了几天时间在网上搜索了一个清晰的示例，提示和线索，以了解如何利用社区插件的Rabbitmq-ha图表，但未取得进展。

有什么想法吗？我想念什么？

3 个答案:

答案 0 :(得分：2)

以下是安装并启用两个RabbitMQ community plugins的示例：

  • rabbitmq_delayed_message_exchange
  • rabbitmq_message_timestamp

第1步：获取Helm图表：

$ helm pull --untar bitnami/rabbitmq

步骤2：更新文件statefulset.yaml 

...
# Install community plugins
pushd /opt/bitnami/rabbitmq/plugins/
curl -LO https://github.com/rabbitmq/rabbitmq-delayed-message-exchange/releases/download/v3.8.0/rabbitmq_delayed_message_exchange-3.8.0.ez
curl -LO https://github.com/rabbitmq/rabbitmq-message-timestamp/releases/download/v3.8.0/rabbitmq_message_timestamp-3.8.0.ez
popd
# End of installing community plugins
exec rabbitmq-server
...

步骤3：在启用了两个插件的情况下安装RabbitMQ 

$ cd rabbitmq
$ helm install rmq . --set rabbitmq.extraPlugins="rabbitmq_delayed_message_exchange rabbitmq_message_timestamp"

现在您可以验证是否已安装了两个插件

$ kubectl get pod
NAME             READY   STATUS    RESTARTS   AGE
rmq-rabbitmq-0   1/1     Running   0          3m32s

$ kubectl exec -it rmq-rabbitmq-0 bash
I have no name!@rmq-rabbitmq-0:/$ rabbitmq-plugins list
Listing plugins with pattern ".*" ...
 Configured: E = explicitly enabled; e = implicitly enabled
 | Status: * = running on rabbit@rmq-rabbitmq-0.rmq-rabbitmq-headless.default.svc.cluster.local
 |/
[  ] rabbitmq_amqp1_0                  3.8.3
[  ] rabbitmq_auth_backend_cache       3.8.3
[  ] rabbitmq_auth_backend_http        3.8.3
[  ] rabbitmq_auth_backend_ldap        3.8.3
[  ] rabbitmq_auth_backend_oauth2      3.8.3
[  ] rabbitmq_auth_mechanism_ssl       3.8.3
[  ] rabbitmq_consistent_hash_exchange 3.8.3
[E*] rabbitmq_delayed_message_exchange 3.8.0
[  ] rabbitmq_event_exchange           3.8.3
[  ] rabbitmq_federation               3.8.3
[  ] rabbitmq_federation_management    3.8.3
[  ] rabbitmq_jms_topic_exchange       3.8.3
[E*] rabbitmq_management               3.8.3
[e*] rabbitmq_management_agent         3.8.3
[E*] rabbitmq_message_timestamp        3.8.0
[  ] rabbitmq_mqtt                     3.8.3
...

注意：我的头盔版本为v3.1.1 

$ helm version
version.BuildInfo{Version:"v3.1.1", GitCommit:"afe70585407b420d0097d07b21c47dc511525ac8", GitTreeState:"clean", GoVersion:"go1.13.8"}

答案 1 :(得分：2)

不再需要构建自定义图表，我用这个 values.yaml 做到了


## Plugins to enable
##
plugins: 'rabbitmq_management rabbitmq_peer_discovery_k8s'

## Community plugins to download during container initialization.
## Combine it with extraPlugins to also enable them.
##
communityPlugins: |
  https://github.com/rabbitmq/rabbitmq-delayed-message-exchange/releases/download/3.8.9/rabbitmq_delayed_message_exchange-3.8.9-0199d11c.ez

## Extra plugins to enable
## Use this instead of `plugins` to add new pluginsmv ra  
##
extraPlugins: |
  rabbitmq_auth_backend_ldap 
  rabbitmq_delayed_message_exchange

答案 2 :(得分：0)

我认为rabbitmq-ha的默认头盔图使用官方的RabbitMQ图像，因此它仅包含core plugins。

我检查了chart config，它只设置了/etc/rabbitmq/enabled_plugins conf文件，将不会自动下载插件文件。

有两种解决方案：

  • 构建您的自定义Rabbitmq图像，并随其附带rabbitmq_delayed_message_exchange文件。
  • 在initContainer中下载插件文件，并将其添加到图表值extraInitContainers
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