随着 Kubernetes 的使用越来越广泛，集群规模越来越大，所带来的问题也逐渐增多。集群组件不健康、磁盘损坏、节点 Not Ready等等问题让开发及运维人员叫苦不迭，那么有没有什么工具能够帮助大家更好的管理集群，降低管理风险呢？
今天 Gitee 介绍的 KubeEye 就是一款优秀的 Kubernetes 集群自动巡检工具，如果你正在被如何管理集群所困扰，那就往下看看吧！
项目名称：KubeEye
项目作者：KubeSphere
开源许可协议：Apache-2.0
项目地址：gitee.com/kubesphere/…
项目简介
KubeEye 是一款开源的 Kubernetes 集群自动巡检工具，旨在自动检测发现 Kubernetes 上的各种问题，比如应用配置错误、集群组件不健康和节点问题，帮助集群管理员更好地管理集群降低风险。
项目架构
使用场景
- KubeEye 可以发现你的集群控制平面的问题，包括 kube-apiserver/kube-controller-manager/etcd 等。
- KubeEye 可以帮助你检测各种节点问题，包括内存/CPU/磁盘压力，意外的内核错误日志等。
- KubeEye 根据行业最佳实践验证你的工作负载 yaml 规范，帮助你使你的集群稳定。
如何使用 KubeEye
-
机器上安装 KubeEye
- 从 Releases 中下载预构建的可执行文件。
- 或者你也可以从源代码构建
git clone https://gitee.com/kubesphere/kubeeye.git cd kubeeye make install -
[可选] 安装 Node-problem-Detector
注意：这一行将在你的集群上安装 npd，只有当你想要详细的报告时才需要。
ke install npd -
KubeEye 执行
root@node1:# ke diag
NODENAME SEVERITY HEARTBEATTIME REASON MESSAGE
node18 Fatal 2020-11-19T10:32:03+08:00 NodeStatusUnknown Kubelet stopped posting node status.
node19 Fatal 2020-11-19T10:31:37+08:00 NodeStatusUnknown Kubelet stopped posting node status.
node2 Fatal 2020-11-19T10:31:14+08:00 NodeStatusUnknown Kubelet stopped posting node status.
node3 Fatal 2020-11-27T17:36:53+08:00 KubeletNotReady Container runtime not ready: RuntimeReady=false reason:DockerDaemonNotReady message:docker: failed to get docker version: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
NAME SEVERITY TIME MESSAGE
scheduler Fatal 2020-11-27T17:09:59+08:00 Get http://127.0.0.1:10251/healthz: dial tcp 127.0.0.1:10251: connect: connection refused
etcd-0 Fatal 2020-11-27T17:56:37+08:00 Get https://192.168.13.8:2379/health: dial tcp 192.168.13.8:2379: connect: connection refused
NAMESPACE SEVERITY PODNAME EVENTTIME REASON MESSAGE
default Warning node3.164b53d23ea79fc7 2020-11-27T17:37:34+08:00 ContainerGCFailed rpc error: code = Unknown desc = Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
default Warning node3.164b553ca5740aae 2020-11-27T18:03:31+08:00 FreeDiskSpaceFailed failed to garbage collect required amount of images. Wanted to free 5399374233 bytes, but freed 416077545 bytes
default Warning nginx-b8ffcf679-q4n9v.16491643e6b68cd7 2020-11-27T17:09:24+08:00 Failed Error: ImagePullBackOff
default Warning node3.164b5861e041a60e 2020-11-27T19:01:09+08:00 SystemOOM System OOM encountered, victim process: stress, pid: 16713
default Warning node3.164b58660f8d4590 2020-11-27T19:01:27+08:00 OOMKilling Out of memory: Kill process 16711 (stress) score 205 or sacrifice child Killed process 16711 (stress), UID 0, total-vm:826516kB, anon-rss:819296kB, file-rss:0kB, shmem-rss:0kB
insights-agent Warning workloads-1606467120.164b519ca8c67416 2020-11-27T16:57:05+08:00 DeadlineExceeded Job was active longer than specified deadline
kube-system Warning calico-node-zvl9t.164b3dc50580845d 2020-11-27T17:09:35+08:00 DNSConfigForming Nameserver limits were exceeded, some nameservers have been omitted, the applied nameserver line is: 100.64.11.3 114.114.114.114 119.29.29.29
kube-system Warning kube-proxy-4bnn7.164b3dc4f4c4125d 2020-11-27T17:09:09+08:00 DNSConfigForming Nameserver limits were exceeded, some nameservers have been omitted, the applied nameserver line is: 100.64.11.3 114.114.114.114 119.29.29.29
kube-system Warning nodelocaldns-2zbhh.164b3dc4f42d358b 2020-11-27T17:09:14+08:00 DNSConfigForming Nameserver limits were exceeded, some nameservers have been omitted, the applied nameserver line is: 100.64.11.3 114.114.114.114 119.29.29.29
NAMESPACE SEVERITY NAME KIND TIME MESSAGE
kube-system Warning node-problem-detector DaemonSet 2020-11-27T17:09:59+08:00 [livenessProbeMissing runAsPrivileged]
kube-system Warning calico-node DaemonSet 2020-11-27T17:09:59+08:00 [runAsPrivileged cpuLimitsMissing]
kube-system Warning nodelocaldns DaemonSet 2020-11-27T17:09:59+08:00 [cpuLimitsMissing runAsPrivileged]
default Warning nginx Deployment 2020-11-27T17:09:59+08:00 [cpuLimitsMissing livenessProbeMissing tagNotSpecified]
insights-agent Warning workloads CronJob 2020-11-27T17:09:59+08:00 [livenessProbeMissing]
insights-agent Warning cronjob-executor Job 2020-11-27T17:09:59+08:00 [livenessProbeMissing]
kube-system Warning calico-kube-controllers Deployment 2020-11-27T17:09:59+08:00 [cpuLimitsMissing livenessProbeMissing]
kube-system Warning coredns Deployment 2020-11-27T17:09:59+08:00 [cpuLimitsMissing]
您可以参考常见FAQ内容来优化您的集群。
除此之外，KubeEye 还支持添加自定义检查规则，如果你想要了解更详细的项目信息，那就点击面的链接去项目主页看看吧：gitee.com/kubesphere/…
