I've been playing around a lot with docker. It's awesome, and it creates a whole new world of possibilities, and I'm constantly coming up with new ideas of where it could be useful. After playing with docker for about a week on my development server,…

When we develop the Angular app inside Docker container, we can simulate Production envioment by build Angualr App instead of using 'ng serve': ng build --watch --delete-output-path false '--delete-output-path false': tells it do not delete the dist…

docker rmi $(docker images -a| grep "^<none>" | awk '{print $"3"}')…

一.运行docker Linux内核版本需要在3.8以上,针对centos6.5 内核为2.6的系统需要先升级内核.不然会特别卡,退出容器. 在yum的ELRepo源中,有mainline(3.13.1).long-term(3.10.28)这2个内核版本,考虑到long-term更稳定,会长期更新,所以选择这个版本. 1.查看当前版本: [root@localhost ~]# more /etc/issue CentOS release 6.5 (Final) Kernel \r on an…

深入浅出Docker(一):Docker核心技术预览 2. 核心技术预览 Docker核心是一个操作系统级虚拟化方法, 理解起来可能并不像VM那样直观.我们从虚拟化方法的四个方面:隔离性.可配额/可度量.便携性.安全性来详细介绍Docker的技术细节. 2.1. 隔离性: Linux Namespace(ns) 每个用户实例之间相互隔离, 互不影响. 一般的硬件虚拟化方法给出的方法是VM,而LXC给出的方法是container,更细一点讲就是kernel namespace.其中pid.net.…

Working with Docker Images ##orignal is always the best In the introduction we've discovered that Docker images are the basis of containers. In the previoussections we've used Docker images that already exist, for example the ubuntu image and thetrai…

docker stop script #!/bin/bash CID_LIST=$(docker ps -q | xargs)if [ "$CID_LIST" = "" ]; then echo "no containers running."else docker stop $CID_LISTfiecho "all containers closed." -----------------------------------…

为什么要使用 Docker? 作为一种新兴的虚拟化方式,Docker 跟传统的虚拟化方式相比具有众多的优势.首先,Docker 容器的启动可以在秒级实现,这相比传统的虚拟机方式要快得多. 其次,Docker 对系统资 源的利用率很高,一台主机上可以同时运行数千个 Docker 容器.容器除了运行其中应用外,基本不消耗额外的系统资源,使得应用的性能很高,同时系统的开销尽量小. 传统虚拟机方式运行 10 个不同的应用就要起 10 个虚拟机,而Docker 只需要启动 10 个隔离的应用即可.具体说来…

rmi 删除image Usage: docker rmi IMAGE [IMAGE...]Remove one or more images -f,--force=falseForce removal of the image --no-prune=falseDonotdelete untagged parents Removing tagged images Images can be removed either by their short or long ID`s, or their…

Docker 运行在 CentOS 7 上,要求系统为64位.系统内核版本为 3.10 以上 一.docker的安装及卸载 1.查看当前系统内核版本: [root@docker ~]# uname -r -.el7.x86_64 2.安装docker [root@docker ~]# yum -y install docker-io 3.启动 Docker 后台服务 [root@docker ~]# systemctl start docker.service 4.镜像加速 鉴于国内网络问题,后…