Web应用中GoTTY终端工具的安装以及用法

本篇文章为大家展示了Web应用中GoTTY终端工具的安装以及用法，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。

GoTTY 是一个简单的命令行工具，可将您的 CLI 工具变成 Web 应用。

1、安装 GoTTY

# Mac 版  brew install yudai/gotty/gotty

如果你有 GO 的环境，也可以通过如下方式安装：

go get github.com/yudai/gotty

2、GoTTY 用法

Usage: gotty [options]  []

• options

--address value, -a value     IP address to listen (default: "0.0.0.0") [$GOTTY_ADDRESS]  --port value, -p value        Port number to liten (default: "8080") [$GOTTY_PORT]  --permit-write, -w            Permit clients to write to the TTY (BE CAREFUL) [$GOTTY_PERMIT_WRITE]  --credential value, -c value  Credential for Basic Authentication (ex: user:pass, default disabled) [$GOTTY_CREDENTIAL]  --random-url, -r              Add a random string to the URL [$GOTTY_RANDOM_URL]  --random-url-length value     Random URL length (default: 8) [$GOTTY_RANDOM_URL_LENGTH]  --tls, -t                     Enable TLS/SSL [$GOTTY_TLS]  --tls-crt value               TLS/SSL certificate file path (default: "~/.gotty.crt") [$GOTTY_TLS_CRT]  --tls-key value               TLS/SSL key file path (default: "~/.gotty.key") [$GOTTY_TLS_KEY]  --tls-ca-crt value            TLS/SSL CA certificate file for client certifications (default: "~/.gotty.ca.crt") [$GOTTY_TLS_CA_CRT]  --index value                 Custom index.html file [$GOTTY_INDEX]  --title-format value          Title format of browser window (default: "{{ .command }}@{{ .hostname }}") [$GOTTY_TITLE_FORMAT]  --reconnect                   Enable reconnection [$GOTTY_RECONNECT]  --reconnect-time value        Time to reconnect (default: 10) [$GOTTY_RECONNECT_TIME]  --max-connection value        Maximum connection to gotty (default: 0) [$GOTTY_MAX_CONNECTION]  --once                        Accept only one client and exit on disconnection [$GOTTY_ONCE]  --timeout value               Timeout seconds for waiting a client(0 to disable) (default: 0) [$GOTTY_TIMEOUT]  --permit-arguments            Permit clients to send command line arguments in URL (e.g. http://example.com:8080/?arg=AAA&arg=BBB) [$GOTTY_PERMIT_ARGUMENTS]  --width value                 Static width of the screen, 0(default) means dynamically resize (default: 0) [$GOTTY_WIDTH]  --height value                Static height of the screen, 0(default) means dynamically resize (default: 0) [$GOTTY_HEIGHT]  --ws-origin value             A regular expression that matches origin URLs to be accepted by WebSocket. No cross origin requests are acceptable by default [$GOTTY_WS_ORIGIN] --term value                  Terminal name to use on the browser, one of xterm or hterm. (default: "xterm") [$GOTTY_TERM] --close-signal value          Signal sent to the command process when gotty close it (default: SIGHUP) (default: 1) [$GOTTY_CLOSE_SIGNAL] --close-timeout value         Time in seconds to force kill process after client is disconnected (default: -1) (default: -1) [$GOTTY_CLOSE_TIMEOUT] --config value                Config file path (default: "~/.gotty") [$GOTTY_CONFIG] --version, -v                 print the version

3、实践

# 示例  gotty -w python3

访问 http://127.0.0.1:8080 即可在线体验 Python3 环境。

进阶篇

容器化时代，遇到一些问题的时候，会进入容器内部排查问题，依靠命令行确实可以解决，但是效率较低，如果将容器作为 Web 可访问的应用，那么处理问题就会便捷很多。

下面将介绍如何使用 GoTTY 连接 k8s 集群中的任意容器。

1、构建 GoTTY Docker 镜像

已构建好的镜像：registry.cn-beijing.aliyuncs.com/tlab/k8s-gotty:latest

• gotty：可运行的 gotty 程序，查看 [Releases]列表，选择合适的

• kubernetes.repo：用于下载 kubectl

[kubernetes]  name=Kubernetes  baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/  enabled=1  gpgcheck=1  repo_gpgcheck=1  gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

• Dockerfile：用于构建镜像

FROM centos:latest  RUN yum install -y epel-release kde-l10n-Chinese glibc-common wget  RUN localedef -c -f UTF-8 -i zh_CN zh_CN.utf8  ENV LC_ALL zh_CN.utf8  ADD gotty /root/  ADD kubernetes.repo /etc/yum.repos.d/  RUN yum -y install kubectl  WORKDIR /root  EXPOSE 8080  CMD ["./gotty", "-w", "--permit-arguments", "kubectl", "exec", "-it", "-n"]

2、在 k8s 集群中运行 GoTTY

kind: Deployment  apiVersion: apps/v1  metadata:    name: gotty    namespace: default  spec:    replicas: 1    selector:      matchLabels:        k8s-app: gotty    template:      metadata:        labels:          k8s-app: gotty      spec:        serviceAccountName: <此处填具有合适权限的k8s用户名>        containers:          - name: gotty            image: registry.cn-beijing.aliyuncs.com/tlab/k8s-gotty            ports:              - containerPort: 8080                protocol: TCP

3、暴露 GoTTY 服务

kind: Service  apiVersion: v1  metadata:    labels:      k8s-app: gotty    name: gotty-service    namespace: default  spec:    ports:      - port: 80        targetPort: 8080        nodePort: 38080    selector:      k8s-app: gotty    type: NodePort

4、访问容器

在终端里，进入容器的命令是：

kubectl exec -it -n  

那么，利用 GoTTY 访问则是 http://:38080/?arg=&arg=

上述内容就是Web应用中GoTTY终端工具的安装以及用法，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注行业资讯频道。