Docker使用技巧有哪些

这篇文章主要介绍Docker使用技巧有哪些 ，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

操作

1、docker top

这个命令是用来查看一个容器里面的进程信息的，比如你想查看一个nginx容器里面有几个nginx进程的时候，就可以这么做

➜ ~ docker top 3b307a09d20dUID     PID     PPID    C     STIME    TTY     TIME    CMDroot    805     787     0     Jul13    ?     00:00:00   nginx: master process nginx -g daemon off;systemd+   941     805     0     Jul13    ?     00:03:18   nginx: worker process

2、docker load && docker save

我一般使用这两个命令去下载打包k8s的镜像，因为你知道的中国的网速并不像国外那么快

docker save可以把一个镜像保存到tar文件中，你可以这么做

docker save registry:2.7.1 >registry-2.7.1.tar

同时docker load可以把镜像从tar文件导入到docker中

docker load < registry-2.7.1.tar

3、docker search

这个命令可以帮助你在命令行中方便的搜索dockerhub中的镜像，比如

➜ ~ docker search nginxNAME        DESCRIPTION          STARS    OFFICIAL   AUTOMATEDnginx        Official build of Nginx.      13519    [OK]jwilder/nginx-proxy    Automated Nginx reverse proxy for docker con… 1846         [OK]richarvey/nginx-php-fpm   Container running Nginx + PHP-FPM capable of… 780          [OK]linuxserver/nginx     An Nginx container, brought to you by LinuxS… 123bitnami/nginx      Bitnami nginx Docker Image      87          [OK]tiangolo/nginx-rtmp    Docker image with Nginx using the nginx-rtmp… 85          [OK]jc21/nginx-proxy-manager   Docker container for managing Nginx proxy ho… 73alfg/nginx-rtmp     NGINX, nginx-rtmp-module and FFmpeg from sou… 71          [OK]nginxdemos/hello     NGINX webserver that serves a simple page co… 57          [OK]jlesage/nginx-proxy-manager  Docker container for Nginx Proxy Manager  53          [OK]nginx/nginx-ingress    NGINX Ingress Controller for Kubernetes   37privatebin/nginx-fpm-alpine  PrivateBin running on an Nginx, php-fpm & Al… 31          [OK]schmunk42/nginx-redirect   A very simple container to redirect HTTP tra… 18          [OK]nginxinc/nginx-unprivileged  Unprivileged NGINX Dockerfiles     16nginx/nginx-prometheus-exporter NGINX Prometheus Exporter      14centos/nginx-112-centos7   Platform for running nginx 1.12 or building … 13centos/nginx-18-centos7   Platform for running nginx 1.8 or building n… 13raulr/nginx-wordpress    Nginx front-end for the official wordpress:f… 13          [OK]sophos/nginx-vts-exporter   Simple server that scrapes Nginx vts stats a… 7          [OK].........

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