5.4.6.2. 本地测试基于 Ansible 的 Operator

流程

1. 为自定义资源（CR）安装自定义资源定义（CRD）和正确的基于角色的访问控制（RBAC）定义：

   $ make install

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   输出示例

   /usr/bin/kustomize build config/crd | kubectl apply -f -
   customresourcedefinition.apiextensions.k8s.io/memcacheds.cache.example.com created

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2. 运行 make run 命令：

   $ make run

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   输出示例

   /home/user/memcached-operator/bin/ansible-operator run
   {"level":"info","ts":1612739145.2871568,"logger":"cmd","msg":"Version","Go Version":"go1.15.5","GOOS":"linux","GOARCH":"amd64","ansible-operator":"v1.3.0","commit":"1abf57985b43bf6a59dcd18147b3c574fa57d3f6"}
   ...
   {"level":"info","ts":1612739148.347306,"logger":"controller-runtime.metrics","msg":"metrics server is starting to listen","addr":":8080"}
   {"level":"info","ts":1612739148.3488882,"logger":"watches","msg":"Environment variable not set; using default value","envVar":"ANSIBLE_VERBOSITY_MEMCACHED_CACHE_EXAMPLE_COM","default":2}
   {"level":"info","ts":1612739148.3490262,"logger":"cmd","msg":"Environment variable not set; using default value","Namespace":"","envVar":"ANSIBLE_DEBUG_LOGS","ANSIBLE_DEBUG_LOGS":false}
   {"level":"info","ts":1612739148.3490646,"logger":"ansible-controller","msg":"Watching resource","Options.Group":"cache.example.com","Options.Version":"v1","Options.Kind":"Memcached"}
   {"level":"info","ts":1612739148.350217,"logger":"proxy","msg":"Starting to serve","Address":"127.0.0.1:8888"}
   {"level":"info","ts":1612739148.3506632,"logger":"controller-runtime.manager","msg":"starting metrics server","path":"/metrics"}
   {"level":"info","ts":1612739148.350784,"logger":"controller-runtime.manager.controller.memcached-controller","msg":"Starting EventSource","source":"kind source: cache.example.com/v1, Kind=Memcached"}
   {"level":"info","ts":1612739148.5511978,"logger":"controller-runtime.manager.controller.memcached-controller","msg":"Starting Controller"}
   {"level":"info","ts":1612739148.5512562,"logger":"controller-runtime.manager.controller.memcached-controller","msg":"Starting workers","worker count":8}

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   现在，Operator 会监控 CR 的事件，创建 CR 将触发您的 Ansible 角色运行。

   注意

   考虑 config/samples/<gvk>.yaml CR 清单示例：

   apiVersion: <group>.example.com/v1alpha1
   kind: <kind>
   metadata:
     name: "<kind>-sample"

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   因为未设置 spec 字段，所以调用 Ansible 时无额外变量。其他部分将涵盖从 CR 传递给 Ansible 的额外变量。为 Operator 设置适当的默认值是很重要的。

3. 创建 CR 实例，并将默认变量 state 设置为 present：

   $ oc apply -f config/samples/<gvk>.yaml

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4. 检查 example-config 配置映射是否已创建：

   $ oc get configmaps

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   输出示例

   NAME                    STATUS    AGE
   example-config          Active    3s

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5. 修改 config/samples/<gvk>.yaml 文件，将 state 字段设置为 absent。例如：

   apiVersion: cache.example.com/v1
   kind: Memcached
   metadata:
     name: memcached-sample
   spec:
     state: absent

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6. 应用更改：

   $ oc apply -f config/samples/<gvk>.yaml

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7. 确认配置映射已被删除：

   $ oc get configmap

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