# blade create k8s pod-network

## 介绍

kubernetes Pod网络相关场景，同基础资源的网络场景

## 命令

支持的网络场景命令如下：

* `blade create k8s pod-network delay` Pod 网络延迟场景，同 \[blade create network delay]\(blade create network delay.md)
* `blade create k8s pod-network loss` Pod 网络丢包场景，同 \[blade create network loss]\(blade create network loss.md)
* `blade create k8s pod-network dns` Pod 域名访问异常场景，同 \[blade create network dns]\(blade create network dns.md)

## 参数

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

```
--namespace string       Pod 所属的命名空间，只能填写一个值，必填项
--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          Pod 资源标签，多个标签之前是或的关系
--names string           Pod 资源名
--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

对 default 命名空间下，指定名为 redis-slave-674d68586-jnf7f Pod本地端口 6379 访问延迟 3000 毫秒，延迟时间上下浮动 1000 毫秒

**yaml 配置方式**

```yaml
apiVersion: chaosblade.io/v1alpha1
kind: ChaosBlade
metadata:
  name: delay-pod-network-by-names
spec:
  experiments:
  - scope: pod
    target: network
    action: delay
    desc: "delay pod network by names"
    matchers:
    - name: names
      value:
      - "redis-slave-674d68586-jnf7f"
    - name: namespace
      value:
      - "default"
    - name: local-port
      value: ["6379"]
    - name: interface
      value: ["eth0"]
    - name: time
      value: ["3000"]
    - name: offset
      value: ["1000"]
```

保存为 yaml 文件，比如 delay\_pod\_network\_by\_names.yaml，使用 kubectl 命令执行：

```
kubectl apply -f delay_pod_network_by_names.yaml
```

实验状态查询：

```
kubectl get blade delay-pod-network-by-names -o json
```

返回结果如下(省略了一部分)：

```json
{
    "apiVersion": "v1",
    "items": [
        {
            "apiVersion": "chaosblade.io/v1alpha1",
            "kind": "ChaosBlade",
            "metadata": {
                "finalizers": [
                    "finalizer.chaosblade.io"
                ],
                "generation": 1,
                "name": "delay-pod-network-by-names",
                "resourceVersion": "9425766",
                "selfLink": "/apis/chaosblade.io/v1alpha1/chaosblades/delay-pod-network-by-names",
                "uid": "cf32327c-ff73-11e9-b3be-00163e136d88"
            },
            "status": {
                "expStatuses": [
                    {
                        "action": "delay",
                        "resStatuses": [
                            {
                                "id": "e28f6e3ae2732a86",
                                "kind": "pod",
                                "name": "chaosblade-tool-vv49t", // 此pod为sidecar
                                "nodeName": "cn-hangzhou.192.168.0.204",
                                "state": "Success",
                                "success": true,
                                "uid": "4f1a28a1-fee6-11e9-8883-00163e0ad0b3"
                            }
                        ],
                        "scope": "pod",
                        "state": "Success",
                        "success": true,
                        "target": "network"
                    }
                ],
                "phase": "Running"
            }
        }
    ],
}
```

可通过访问服务，或者 telnet 命令验证实验效果

执行以下命令停止实验：

```
kubectl delete -f delay_pod_network_by_names.yaml
```

或者直接删除 blade 资源：

```
kubectl delete blade delay-pod-network-by-names
```

**blade 执行方式**

```
blade create k8s pod-network delay --time 3000 --offset 1000 --interface eth0 --local-port 6379 --names redis-slave-674d68586-jnf7f --namespace default --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":"127f1ee0afcd4798"}
```

可通过以下命令查询实验状态：

```
blade query k8s create 127f1ee0afcd4798 --kubeconfig config

{"code":200,"success":true,"result":{"uid":"127f1ee0afcd4798","success":true,"error":"","statuses":[{"id":"b5a216dddeb3389f","uid":"4f1a28a1-fee6-11e9-8883-00163e0ad0b3","name":"chaosblade-tool-vv49t","state":"Success","kind":"pod","success":true,"nodeName":"cn-hangzhou.192.168.0.204"}]}}
```

销毁实验：

```
blade destroy 127f1ee0afcd4798
```

## 常见问题

其他问题参考 \[blade create k8s]\(blade create k8s.md) 常见问题


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://chaosblade-io.gitbook.io/chaosblade-help-zh-cn/blade-create-k8s/blade-create-k8s-pod-network.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.