blade create k8s node-network

介绍
kubernetes 节点网络相关场景，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 node-network delay 节点网络延迟场景，同 [blade create network delay](blade create network delay.md)
blade create k8s node-network loss 节点网络丢包场景，同 [blade create network loss](blade create network loss.md)
blade create k8s node-network dns 节点域名访问异常场景，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：
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--evict-count string     限制实验生效的数量
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--evict-percent string   限制实验生效数量的百分比，不包含 %
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--labels string          节点资源标签
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--names string           节点资源名，多个资源名之间使用逗号分隔
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--kubeconfig string      kubeconfig 文件全路径（仅限使用 blade 命令调用时使用）
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--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
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案例
对 cn-hangzhou.192.168.0.205 节点本地端口 40690 访问丢包率 60%
yaml 配置方式
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apiVersion: chaosblade.io/v1alpha1
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kind: ChaosBlade
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metadata:
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  name: loss-node-network-by-names
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spec:
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  experiments:
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  - scope: node
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    target: network
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    action: loss
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    desc: "node network loss"
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    matchers:
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    - name: names
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      value: ["cn-hangzhou.192.168.0.205"]
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    - name: percent
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      value: ["60"]
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    - name: interface
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      value: ["eth0"]
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    - name: local-port
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      value: ["40690"]
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保存为 yaml 文件，比如 loss-node-network-by-names.yaml，使用 kubectl 命令执行：
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kubectl apply -f loss-node-network-by-names.yaml
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实验状态查询：
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kubectl get blade loss-node-network-by-names -o json
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返回结果如下(省略了一部分)：
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~ » kubectl get blade loss-node-network-by-names -o json                                                            
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{
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    "apiVersion": "chaosblade.io/v1alpha1",
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    "kind": "ChaosBlade",
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    "metadata": {
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        "creationTimestamp": "2019-11-04T09:56:36Z",
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        "finalizers": [
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            "finalizer.chaosblade.io"
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        ],
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        "generation": 1,
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        "name": "loss-node-network-by-names",
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        "resourceVersion": "9262302",
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        "selfLink": "/apis/chaosblade.io/v1alpha1/chaosblades/loss-node-network-by-names",
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        "uid": "63a926dd-fee9-11e9-b3be-00163e136d88"
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    },
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        "status": {
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        "expStatuses": [
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            {
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                "action": "loss",
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                "resStatuses": [
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                    {
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                        "id": "057acaa47ae69363",
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                        "kind": "node",
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                        "name": "cn-hangzhou.192.168.0.205",
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                        "nodeName": "cn-hangzhou.192.168.0.205",
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                        "state": "Success",
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                        "success": true,
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                        "uid": "e179b30d-df77-11e9-b3be-00163e136d88"
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                    }
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                ],
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                "scope": "node",
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                "state": "Success",
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                "success": true,
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                "target": "network"
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            }
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        ],
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        "phase": "Running"
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    }
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}
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执行以下命令停止实验：
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kubectl delete -f loss-node-network-by-names.yaml
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或者直接删除 blade 资源：
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kubectl delete blade loss-node-network-by-names
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blade 执行方式
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blade create k8s node-network loss --percent 60 --interface eth0 --local-port 40690 --kubeconfig config --names cn-hangzhou.192.168.0.205
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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：
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{"code":200,"success":true,"result":"e647064f5f20953c"}
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可通过以下命令查询实验状态：
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blade query k8s create e647064f5f20953c --kubeconfig config
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​
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{"code":200,"success":true,"result":{"uid":"e647064f5f20953c","success":true,"error":"","statuses":[{"id":"fa471a6285ec45f5","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"}]}}
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销毁实验：
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blade destroy e647064f5f20953c
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常见问题
其他问题参考 [blade create k8s](blade create k8s.md) 常见问题

blade create k8s node-cpu

blade create k8s node-process

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