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KubeEdge 1.20.0 现已发布。新版本针对大规模、离线等边缘场景对边缘节点和应用的管理、运维等能力进行了增强,同时新增了多语言 Mapper-Framework 的支持。
新增特性:
- 支持批量节点操作
- 多语言 Mapper-Framework 支持
- 边缘 keadm ctl 新增 pods logs/exec/describe 和 Devices get/edit/describe 能力
- 解耦边缘应用与节点组,支持使用 Node LabelSelector
- 边云通道支持 IPv6
- 升级 k8s 依赖到1.30
支持批量节点操作
在之前的版本中,keadm 工具仅支持单个节点的安装与管理,然而在边缘场景中,节点数量通常比较庞大,单个节点的管理难以满足大规模场景的需求。
在1.20.0版本中,提供了批量节点操作和运维的能力。基于这个能力,用户仅需要使用一个配置文件,即可通过一个控制节点(控制节点可以登录所有边缘节点)对所有边缘节点进行批量操作和维护。keadm 当前版本支持的批量能力包括 join, reset 和 upgrade。
# 配置文件配置要求参考如下 keadm: download: enable: true # <Optional> Whether to download the keadm package, which can be left unconfigured, default is true. if it is false, the 'offlinePackageDir' will be used. url: "" # <Optional> The download address of the keadm package, which can be left unconfigured. If this parameter is not configured, the official github repository will be used by default. keadmVersion: "" # <Required> The version of keadm to be installed. for example: v1.19.0 archGroup: # <Required> This parameter can configure one or more of amd64/arm64/arm. - amd64 offlinePackageDir: "" # <Optional> The path of the offline package. When download.enable is true, this parameter can be left unconfigured. cmdTplArgs: # <Optional> This parameter is the execution command template, which can be optionally configured and used in conjunction with nodes[x].keadmCmd. cmd: "" # This is an example parameter, which can be used in conjunction with nodes[x].keadmCmd. token: "" # This is an example parameter, which can be used in conjunction with nodes[x].keadmCmd. nodes: - nodeName: edge-node # <Required> Unique name, used to identify the node arch: amd64 # <Required> The architecture of the node, which can be configured as amd64/arm64/arm keadmCmd: "" # <Required> The command to be executed on the node, can used in conjunction with keadm.cmdTplArgs. for example: "{{.cmd}} --edgenode-name=containerd-node1 --token={{.token}}" copyFrom: "" # <Optional> The path of the file to be copied from the local machine to the node, which can be left unconfigured. ssh: ip: "" # <Required> The IP address of the node. username: root # <Required> The username of the node, need administrator permissions. port: 22 # <Optional> The port number of the node, the default is 22. auth: # Log in to the node with a private key or password, only one of them can be configured. type: password # <Required> The value can be configured as 'password' or 'privateKey'. passwordAuth: # It can be configured as 'passwordAuth' or 'privateKeyAuth'. password: "" # <Required> The key can be configured as 'password' or 'privateKeyPath'. maxRunNum: 5 # <Optional> The maximum number of concurrent executions, which can be left unconfigured. The default is 5.` # 配置文件参考用例 (各字段具体值请根据实际环境进行配置) keadm: download: enable: true url: https://github.com/kubeedge/kubeedge/releases/download/v1.20.0 # If this parameter is not configured, the official github repository will be used by default keadmVersion: v1.20.0 archGroup: # This parameter can configure one or more of amd64\arm64\arm - amd64 offlinePackageDir: /tmp/kubeedge/keadm/package/amd64 # When download.enable is true, this parameter can be left unconfigured cmdTplArgs: # This parameter is the execution command template, which can be optionally configured and used in conjunction with nodes[x].keadmCmd cmd: join--cgroupdriver=cgroupfs--cloudcore-ipport=192.168.1.102:10000--hub-protocol=websocket--certport=10002--image-repository=docker.m.daocloud.io/kubeedge--kubeedge-version=v1.20.0--remote-runtime-endpoint=unix:///run/containerd/containerd.sock token: xxx nodes: - nodeName: ubuntu1 # Unique name arch: amd64 keadmCmd: '{{.cmd}} --edgenode-name=containerd-node1 --token={{.token}}' # Used in conjunction with keadm.cmdTplArgs copyFrom: /root/test-keadm-batchjoin # The file directory that needs to be remotely accessed to the joining node ssh: ip: 192.168.1.103 username: root auth: type: privateKey # Log in to the node using a private key privateKeyAuth: privateKeyPath: /root/ssh/id_rsa - nodeName: ubuntu2 arch: amd64 keadmCmd: join--edgenode-name=containerd-node2--cgroupdriver=cgroupfs--cloudcore-ipport=192.168.1.102:10000--hub-protocol=websocket--certport=10002--image-repository=docker.m.daocloud.io/kubeedge--kubeedge-version=v1.20.0--remote-runtime-endpoint=unix:///run/containerd/containerd.sock # Used alone copyFrom: /root/test-keadm-batchjoin ssh: ip:192.168.1.104 username: root auth: type: password passwordAuth: password: ***** maxRunNum: 5 # 用法 (保存以上文件,例如保存为 config.yaml) # 在控制节点下载最新版本 keadm, 执行以下命令进行使用 keadmbatch-c config.yaml
更多信息可参考:
- https://github.com/kubeedge/kubeedge/pull/5988
- https://github.com/kubeedge/kubeedge/pull/5968
- https://github.com/kubeedge/website/pull/657
多语言 Mapper-Framework 支持
由于边缘 IoT 设备通信协议的多样性,用户可能需要使用 Mapper-Framework 生成自定义 Mapper 插件来纳管边缘设备。当前 Mapper-Framework 只能生成 go 语言版本的 Mapper 工程,对于部分不熟悉 go 语言的开发者来说使用门槛仍然较高。因此在新版本中,KubeEdge 提供了 Java 版本的 Mapper-Framework,用户可以访问 KubeEdge 主仓库的feature-multilingual-mapper分支,利用 Mapper-Framework 生成 Java 版的自定义 Mapper 工程。
更多信息可参考:
- https://github.com/kubeedge/kubeedge/pull/5773
- https://github.com/kubeedge/kubeedge/pull/5900
边缘 keadm ctl
新增 pods logs/exec/describe 和 Devices get/edit/describe 能力
在v1.17.0版本中,新增了 keadm ctl 子命令,支持在离线场景下对边缘 pod 进行查询和重启。在v1.20中对该命令做了进一步增强,支持 pod 的logs/exec/describe等功能,用户在边缘可对 pod 进行日志查询、pod 资源详细信息查询、进入容器内部等操作。同时还新增了对 device 的操作,支持 device 的get/edit/describe的功能,可以在边缘获取 device 列表、device 的详细信息查询、在边缘离线场景下对 device 进行编辑操作。
如下所示,新增的 keadm ctl 子命令功能均在 MetaServer 中开放了 Restful 接口,并与 K8s ApiServer 对应的接口完全兼容。
[root@edgenode1 ~] # keadm ctl -h Commands operating on the data plane at edge Usage: keadm ctl [command] Available Commands: ... describe Show details of a specific resource edit Edit a specific resource exec Execute command in edge pod get Get resources in edge node logs Get pod logs in edge node ...
更多信息可参考:
- https://github.com/kubeedge/kubeedge/pull/5752
- https://github.com/kubeedge/kubeedge/pull/5901
解耦边缘应用与节点组,支持使用 Node LabelSelector
EdgeApplication 可以通过节点组覆盖部署定义(如副本、镜像、命令和环境),Pod 流量在节点组内闭环(EdgeApplication 管理的 Deployment 共用一个 Service)。但在实际场景中,需要批量操作的节点范围与需要相互协作的节点范围并不相同。例如在智慧园区的场景中,每个城市都有很多个智慧园区,需要应用的流量在一个智慧园区内闭环,但应用批量管理的范围可能是城市级,也可能是省级。
在EdgeApplication CRD中为节点标签选择器添加了一个新的targetNodeLabels字段,该字段将允许应用程序根据节点标签进行部署,并且覆盖特定的字段,YAML 定义如下:
apiVersion: apps.kubeedge.io/v1alpha1 kind: EdgeApplication metadata: name: edge-app namespace: default spec: workloadTemplate: {...} workloadScope: # New field: targetNodeLabels targetNodeLabels: - labelselector: - matchExpressions: - key: "region" operator: In values: - "HangZhou" overriders: {...}
更多信息可参考:
- Issue: https://github.com/kubeedge/kubeedge/issues/5755
- Pull Request: https://github.com/kubeedge/kubeedge/pull/5845
边云通道支持 IPv6
在官网的文档中提供了一份配置指南,介绍了 KubeEdge 如何在 Kubernetes 集群中让云边 hub 隧道支持 IPv6。
文档地址:https://kubeedge.io/docs/advanced/support_ipv6
升级 K8s 依赖到 v1.30
新版本将依赖的 Kubernetes 版本升级到v1.30.7,你可以在云和边缘使用新版本的特性。
更多信息可参考:https://github.com/kubeedge/kubeedge/pull/5997
版本升级注意事项
从v1.20开始,EdgeCore的配置项edged.rootDirectory的默认值将会由/var/lib/edged切换至/var/lib/kubelet。如果您需要继续使用原有路径,可以在使用 keadm 安装 EdgeCore 时设置 --set edged.rootDirectory=/var/lib/edged。
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