很多人都在用nginx-ingress ，但是因为我们无法和查查看nginx配置文件一样简单的查看配置文件，每次都需要登录到Pod里去查看，而且pod里边的后端是动态的，所以我们需要一个便捷的方式查看配置
今天要安装的是一个ingress-nginx的plugin 插件
首先：安装krew https://github.com/kubernetes-sigs/krew
直接运行如下命令：
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( set -x; cd "$(mktemp -d)" && curl -fsSLO "https://github.com/kubernetes-sigs/krew/releases/latest/download/krew.{tar.gz,yaml}" && tar zxvf krew.tar.gz && KREW=./krew-"$(uname | tr '[:upper:]' '[:lower:]')_amd64" && "$KREW" install --manifest=krew.yaml --archive=krew.tar.gz && "$KREW" update ) |
然后在你的brashrc 或者.zshrc中增加如下内容：
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export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH" |
然后我们安装：
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kubectl krew install ingress-nginx |
安装完成后，我们就可以查看：
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kubectl ingress-nginx --help A kubectl plugin for inspecting your ingress-nginx deployments Usage: ingress-nginx [command] Available Commands: backends Inspect the dynamic backend information of an ingress-nginx instance certs Output the certificate data stored in an ingress-nginx pod conf Inspect the generated nginx.conf exec Execute a command inside an ingress-nginx pod general Inspect the other dynamic ingress-nginx information help Help about any command info Show information about the ingress-nginx service ingresses Provide a short summary of all of the ingress definitions lint Inspect kubernetes resources for possible issues logs Get the kubernetes logs for an ingress-nginx pod ssh ssh into a running ingress-nginx pod Flags: --as string Username to impersonate for the operation --as-group stringArray Group to impersonate for the operation, this flag can be repeated to specify multiple groups. --cache-dir string Default HTTP cache directory (default "/Users/jeremyzhang/.kube/http-cache") --certificate-authority string Path to a cert file for the certificate authority --client-certificate string Path to a client certificate file for TLS --client-key string Path to a client key file for TLS --cluster string The name of the kubeconfig cluster to use --context string The name of the kubeconfig context to use -h, --help help for ingress-nginx --insecure-skip-tls-verify If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure --kubeconfig string Path to the kubeconfig file to use for CLI requests. -n, --namespace string If present, the namespace scope for this CLI request --request-timeout string The length of time to wait before giving up on a single server request. Non-zero values should contain a corresponding time unit (e.g. 1s, 2m, 3h). A value of zero means don't timeout requests. (default "0") -s, --server string The address and port of the Kubernetes API server --tls-server-name string Server name to use for server certificate validation. If it is not provided, the hostname used to contact the server is used --token string Bearer token for authentication to the API server --user string The name of the kubeconfig user to use Use "ingress-nginx [command] --help" for more information about a command. |
例如我们想查看所有的backends信息：
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$ kubectl ingress-nginx backends -n ingress-nginx [ { "name": "default-apple-service-5678", "service": { "metadata": { "creationTimestamp": null }, "spec": { "ports": [ { "protocol": "TCP", "port": 5678, "targetPort": 5678 } ], "selector": { "app": "apple" }, "clusterIP": "10.97.230.121", "type": "ClusterIP", "sessionAffinity": "None" }, "status": { "loadBalancer": {} } }, "port": 0, "sslPassthrough": false, "endpoints": [ { "address": "10.1.3.86", "port": "5678" } ], "sessionAffinityConfig": { "name": "", "cookieSessionAffinity": { "name": "" } }, "upstreamHashByConfig": { "upstream-hash-by-subset-size": 3 }, "noServer": false, "trafficShapingPolicy": { "weight": 0, "header": "", "headerValue": "", "cookie": "" } }, { "name": "default-echo-service-8080", ... }, { "name": "upstream-default-backend", ... } ] |
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