提示:这里可以添加系列文章的所有文章的目录,目录需要自己手动添加
例如:第一章 Python 机器学习入门之pandas的使用
目录
前言
一、docker是什么?
二、环境约定
三、环境安装
四、安装centos7
五、操作实例
六、安装docker
常用命令
去了新公司线上应用部署环境由传统服务器直接部署变为使用docker,并且感觉以前部署应用方式不够优雅,面对微服务体系资源利用率不够高,所以学习docker。
所有百度云盘提取码都为1111
Modernize your applications, accelerate innovation Securely build, share and run modern applications anywhere
翻译过来就是帮助程序程序构建、共享(可移植)、运行的的平台,思想上非常接近java一次编译,到处运行,在以后学习中可以类比java中相关知识。
环境非常重要避免未知问题产生!!!!!!!!!!!!!!
傻瓜式安装2、3程序,如下图所示。
通过Xshell连接centos7
# -*- mode: ruby -*-
# vi: set ft=ruby :
# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
# The most common configuration options are documented and commented below.
# For a complete reference, please see the online documentation at
# https://docs.vagrantup.com.
# Every Vagrant development environment requires a box. You can search for
# boxes at https://vagrantcloud.com/search.
config.vm.box = "centos/7"
# Disable automatic box update checking. If you disable this, then
# boxes will only be checked for updates when the user runs
# `vagrant box outdated`. This is not recommended.
# config.vm.box_check_update = false
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine. In the example below,
# accessing "localhost:8080" will access port 80 on the guest machine.
# NOTE: This will enable public access to the opened port
# config.vm.network "forwarded_port", guest: 80, host: 8080
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine and only allow access
# via 127.0.0.1 to disable public access
# config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
# Create a private network, which allows host-only access to the machine
# using a specific IP.
# config.vm.network "private_network", ip: "192.168.33.10"
# Create a public network, which generally matched to bridged network.
# Bridged networks make the machine appear as another physical device on
# your network. centos和本地机器网络连接方式
config.vm.network "public_network"
# Share an additional folder to the guest VM. The first argument is
# the path on the host to the actual folder. The second argument is
# the path on the guest to mount the folder. And the optional third
# argument is a set of non-required options.
# config.vm.synced_folder "../data", "/vagrant_data"
# Provider-specific configuration so you can fine-tune various
# backing providers for Vagrant. These expose provider-specific options.
# Example for VirtualBox:
#
# config.vm.provider "virtualbox" do |vb|
# # Display the VirtualBox GUI when booting the machine
# vb.gui = true
#
# # Customize the amount of memory on the VM:
# vb.memory = "1024"
# end 官方规定最小cpu2核、内存看自己机器配置
config.vm.provider "virtualbox" do |vb|
vb.memory = "4000"
vb.name= "demo"
vb.cpus= 2
end
#
# View the documentation for the provider you are using for more
# information on available options.
# Enable provisioning with a shell script. Additional provisioners such as
# Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
# documentation for more information about their specific syntax and use.
# config.vm.provision "shell", inline: <<-SHELL
# apt-get update
# apt-get install -y apache2
# SHELL
end
卸载之前的docker
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
安装必要的依赖
sudo yum install -y yum-utils \
device-mapper-persistent-data \
lvm2
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
安装docker
sudo yum install -y docker-ce docker-ce-cli containerd.io
启动docker
sudo systemctl start docker
测试docker安装是否成功
sudo docker run hello-world
vagrant常用命令
(1)vagrant ssh
进入刚才创建的centos7中
(2)vagrant status
查看centos7的状态
(3)vagrant halt
停止/关闭centos7
(4)vagrant destroy
删除centos7
(5)vagrant status
查看当前vagrant创建的虚拟机
(6)Vagrantfile中也可以写脚本命令,使得centos7更加丰富
但是要注意,修改了Vagrantfile,要想使正常运行的centos7生效,必须使用vagrant reload
box的打包分发
01 退出虚拟机
vagrant halt
02 打包
vagrant package --output first-docker-centos7.box
03 得到first-docker-centos7.box
04 将first-docker-centos7.box添加到其他的vagrant环境中
vagrant box add first-docker-centos7 first-docker-centos7.box
05 得到Vagrantfile
vagrant init first-docker-centos7
06 根据Vagrantfile启动虚拟机
vagrant up [此时可以得到和之前一模一样的环境,但是网络要重新配置]
docker
docker pull 拉取镜像到本地
docker run 根据某个镜像创建容器
-d 让容器在后台运行,其实就是一个进程
--name 给容器指定一个名字
-p 将容器的端口映射到宿主机的端口
docker exec -it 进入到某个容器中并交互式运行
images 查询所有镜像
ps 查看容器列表