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版本：1.7.4

模拟节点进程相关场景

介绍​

kubernetes 节点进程相关场景，同基础资源的进程场景

命令​

支持的进程场景命令如下：

参数​

除了上述基础场景各自所需的参数外，在 kubernetes 环境下，还支持的参数如下：

--evict-count string     限制实验生效的数量
--evict-percent string   限制实验生效数量的百分比，不包含 %
--labels string          节点资源标签
--names string           节点资源名，多个资源名之间使用逗号分隔
--kubeconfig string      kubeconfig 文件全路径（仅限使用 blade 命令调用时使用）
--waiting-time string    实验结果等待时间，默认为 20s，参数值要包含单位，例如 10s，1m

案例​

杀指定 cn-hangzhou.192.168.0.205 节点上 kubelet 进程

yaml 配置方式如下

apiVersion: chaosblade.io/v1alpha1
kind: ChaosBlade
metadata:
  name: kill-node-process-by-names
spec:
  experiments:
    - scope: node
      target: process
      action: kill
      desc: "kill node process by names"
      matchers:
        - name: names
          value: ["cn-hangzhou.192.168.0.205"]
        - name: process
          value: ["redis-server"]

可以看到执行前后，redis-server 的进程号发生改变，说明被杀掉后，又被重新拉起

# ps -ef | grep redis-server
19497 root      2:05 redis-server *:6379

# ps -ef | grep redis-server
31855 root      0:00 redis-server *:6379

通过 kubectl get blade kill-node-process-by-names -o json 可以查看详细的执行结果(下发只截取部分内容)

{
  "apiVersion": "v1",
  "items": [
    {
      "apiVersion": "chaosblade.io/v1alpha1",
      "kind": "ChaosBlade",
      "metadata": {
        "finalizers": ["finalizer.chaosblade.io"],
        "generation": 1,
        "name": "kill-node-process-by-names",
        "resourceVersion": "9421288",
        "selfLink": "/apis/chaosblade.io/v1alpha1/chaosblades/kill-node-process-by-names",
        "uid": "24aed084-ff70-11e9-8883-00163e0ad0b3"
      },
      "status": {
        "expStatuses": [
          {
            "action": "kill",
            "resStatuses": [
              {
                "id": "ebe34959424fb022",
                "kind": "node",
                "name": "cn-hangzhou.192.168.0.205",
                "nodeName": "cn-hangzhou.192.168.0.205",
                "state": "Success",
                "success": true,
                "uid": "e179b30d-df77-11e9-b3be-00163e136d88"
              }
            ],
            "scope": "node",
            "state": "Success",
            "success": true,
            "target": "process"
          }
        ],
        "phase": "Running"
      }
    }
  ]
}

执行以下命令停止实验：

kubectl delete -f kill_node_process_by_names.yaml

或者直接删除 blade 资源：

kubectl delete blade kill-node-process-by-names

blade 执行方式

blade create k8s node-process kill --process redis-server --names cn-hangzhou.192.168.0.205 --kubeconfig config

如果执行失败，会返回详细的错误信息；如果执行成功，会返回实验的 UID：

{"code":200,"success":true,"result":"fc93e5bbe4827d4b"}

可通过以下命令查询实验状态：

blade query k8s create fc93e5bbe4827d4b --kubeconfig config

{"code":200,"success":true,"result":{"uid":"fc93e5bbe4827d4b","success":true,"error":"","statuses":[{"id":"859c56e6850c1c1b","uid":"e179b30d-df77-11e9-b3be-00163e136d88","name":"cn-hangzhou.192.168.0.205","state":"Success","kind":"node","success":true,"nodeName":"cn-hangzhou.192.168.0.205"}]}}

销毁实验：

blade destroy fc93e5bbe4827d4b