blocks|key|2756031|text|抱歉，是我的误会。我的操作系统是Redhat+Linux。我可以安装码头|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2756032|yum-config-manager+--enable+rhui-REGION-rhel-server-extras
yum+-y+install+docker+
systemctl+start+docker
systemctl+enable+docker
docker+version|code-block|syntax|javascript|2756033|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

So sorry, it was my misunderstanding.
My OS is Redhat Linux.
I get to install docker by
<pre><code>yum-config-manager --enable rhui-REGION-rhel-server-extras
yum -y install docker 
systemctl start docker
systemctl enable docker
docker version
</code></pre>

blocks|key|1913149|text|安装码头|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1913150|sudo+yum+update+-y
sudo+yum+-y+install+docker|code-block|syntax|javascript|1913151|启动码头|1913152|sudo+service+docker+start|1913153|访问ec2-user用户中的Docker命令|offset|length|style|CODE|1913154|sudo+usermod+-a+-G+docker+ec2-user
sudo+chmod+666+/var/run/docker.sock
docker+version|1913155|entityMap^0|0|0|0|0|2|8|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@$M|Z|N|10|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

<h3>Install Docker</h3>
<pre><code>sudo yum update -y
sudo yum -y install docker
</code></pre>
<h3>Start Docker</h3>
<pre><code>sudo service docker start
</code></pre>
<h3>Access Docker commands in <code>ec2-user</code> user</h3>
<pre><code>sudo usermod -a -G docker ec2-user
sudo chmod 666 /var/run/docker.sock
docker version
</code></pre>

blocks|key|2755972|text|确保安装了amazon附加程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2755973|[root@ip-20-0-0-112+~]#+which+amazon-linux-extras
/usr/bin/amazon-linux-extras|code-block|syntax|javascript|2755974|如果没有，请使用yum安装amazon附加程序。|2755975|yum+-y+install+amazon-linux-extras|2755976|然后使用|2755977|amazon-linux-extras+install+docker|2755978|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Make sure you have amazon-linux-extras installed

<pre><code>[root@ip-20-0-0-112 ~]# which amazon-linux-extras
/usr/bin/amazon-linux-extras
</code></pre>

If not install amazon-linux-extras using yum

<pre><code>yum -y install amazon-linux-extras
</code></pre>

Then install docker using 

<pre><code>amazon-linux-extras install docker
</code></pre>

blocks|key|2756055|text|我在amazon+(RHEL+7.2)+-+ami-035b3c7efe6d061d5上，|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|2756056|cat+/proc/version
Linux+version+4.14.123-86.109.amzn1.x86_64+(mockbuild@koji-pdx-corp-builder-64004)+(gcc+version+7.2.1+20170915+(Red+Hat+7.2.1-2)+(GCC))+#1+SMP+Mon+Jun+10+19:44:53+UTC+2019|code-block|syntax|javascript|2756057|下面的脚本可以工作，无需安装amazon-linux-extras+install|2756058|sudo+yum+-y+install+docker+
sudo+service+docker+start
sudo+chmod+666+/var/run/docker.sock|2756059|我必须解决许可问题。在此还将介绍如何修复码头:获得许可被拒绝的问题|2756060|然后我可以检查集装箱，|2756061|[ec2-user@ip-30-0-0-196+~]$+docker+ps
CONTAINER+ID++++++++IMAGE+++++++++++++++COMMAND+++++++++++++CREATED+++++++++++++STATUS++++++++++++++PORTS+++++++++++++++NAMES|2756062|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/51362528/432903^0|F|3|M|L|0|0|E|R|0|0|G|H|0|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|18|8|@]|E|@]|F|$J|K]]|$1|L|3|M|5|6|7|19|8|@$9|1A|A|1B|B|D]]|E|@]|F|$]]|$1|N|3|O|5|I|7|1C|8|@]|E|@]|F|$J|K]]|$1|P|3|Q|5|6|7|1D|8|@]|E|@$9|1E|A|1F|1|1G]]|F|$]]|$1|R|3|S|5|6|7|1H|8|@]|E|@]|F|$]]|$1|T|3|U|5|I|7|1I|8|@]|E|@]|F|$J|K]]|$1|V|3|-4|5|6|7|1J|8|@]|E|@]|F|$]]]|W|$X|$5|Y|Z|10|F|$11|12]]]]

I'm on amazon linux (RHEL 7.2) - <code>ami-035b3c7efe6d061d5</code>, 

<pre><code>cat /proc/version
Linux version 4.14.123-86.109.amzn1.x86_64 (mockbuild@koji-pdx-corp-builder-64004) (gcc version 7.2.1 20170915 (Red Hat 7.2.1-2) (GCC)) #1 SMP Mon Jun 10 19:44:53 UTC 2019
</code></pre>

Following script works without having to install <code>amazon-linux-extras install</code>

<pre><code>sudo yum -y install docker 
sudo service docker start
sudo chmod 666 /var/run/docker.sock
</code></pre>

I had to fix permission issue. Also described here <a href="https://stackoverflow.com/a/51362528/432903">How to fix docker: Got permission denied issue</a>

Then I can check containers, 

<pre><code>[ec2-user@ip-30-0-0-196 ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
</code></pre>

blocks|key|2756088|text|对于Amazon，配置了对企业Linux+(EPEL)存储库的额外包的访问，但默认情况下不启用它。|type|blockquote|depth|inlineStyleRanges|entityRanges|data|2756089|要安装amazon附加程序，请在实例中验证与internet的连接，然后检查实例的OS：|unstyled|2756090|cat+/etc/os-release|offset|length|style|CODE|2756091|如果操作系统是amazon+版本2运行|BOLD|2756092|sudo+yum+install+https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm|2756093|或者运行sudo+yum-config-manager+--enable+epel|2756094|使用EPEL存储库。你现在可以安装可用的软件包..。例如sudo+amazon-linux-extras+install+docker|2756095|有关更多详细信息，请参阅aws文件。|2756096|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/amazon-linux-ami-basics.html#extras-library^0|0|0|0|J|0|E|3|0|0|2F|0|4|11|0|S|13|0|C|5|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|14|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|15|8|@$G|16|H|17|I|J]]|9|@]|A|$]]|$1|K|3|L|5|D|7|18|8|@$G|19|H|1A|I|M]]|9|@]|A|$]]|$1|N|3|O|5|D|7|1B|8|@$G|1C|H|1D|I|J]]|9|@]|A|$]]|$1|P|3|Q|5|D|7|1E|8|@$G|1F|H|1G|I|J]]|9|@]|A|$]]|$1|R|3|S|5|D|7|1H|8|@$G|1I|H|1J|I|J]]|9|@]|A|$]]|$1|T|3|U|5|D|7|1K|8|@]|9|@$G|1L|H|1M|1|1N]]|A|$]]|$1|V|3|-4|5|D|7|1O|8|@]|9|@]|A|$]]]|W|$X|$5|Y|Z|10|A|$11|12]]]]

<blockquote>
 For the Amazon Linux AMI, access to the Extra Packages for Enterprise Linux (EPEL) repository is configured, but it is not enabled by default. 
</blockquote>

To install amazon-linux-extras, verify connection to the internet from within the instance then check the instance's OS:

<code>cat /etc/os-release</code>

If the OS is amazon linux version 2 run 

<code>sudo yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm</code>

Or run <code>sudo yum-config-manager --enable epel</code>

To use the EPEL repository. You can now install available packages... e.g. <code>sudo amazon-linux-extras install docker</code>

see <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/amazon-linux-ami-basics.html#extras-library" rel="nofollow noreferrer">aws documentation</a> for more details.

blocks|key|2756211|text|您可以使用下面的脚本在Amazon+2实例中安装docker。此外，您还可以在ec2用户数据部分中提到下面的脚本，以便在服务器引导时自动安装停靠程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2756212|#!/bin/bash
sudo+yum+update+-y
sudo+yum+-y+install+docker
sudo+service+docker+start
sudo+usermod+-a+-G+docker+ec2-user
sudo+chmod+666+/var/run/docker.sock|code-block|syntax|javascript|2756213|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use the below script to install docker inside Amazon Linux 2 Instance. Also, you can mention the below script in the ec2 user data section so at the time of server bootstrap docker will be installed automatically.
<pre><code>#!/bin/bash
sudo yum update -y
sudo yum -y install docker
sudo service docker start
sudo usermod -a -G docker ec2-user
sudo chmod 666 /var/run/docker.sock
</code></pre>

blocks|key|2756136|text|Amazon+2附带安装了amazon附加设备。如果您认为您正在运行的是Amazon+2，而Amazon附加程序并不在EC2用户的路径上，那么您可能运行的是较旧版本的Amazon。运行以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2756137|grep+PRETTY_NAME+/etc/os-release+|code-block|syntax|javascript|2756138|它应该输出|2756139|PRETTY_NAME="Amazon+Linux+2"|2756140|如果您没有看到这一点，请返回到ec2控制台并深入了解实例的详细信息。单击AMI应该会显示它对应于较早版本的Amazon。在创建新实例时，一些AWS工具，特别是CDK，目前默认为Amazon，而不是Amazon+2。|2756141|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Amazon Linux 2 comes with amazon-linux-extras installed. If you think that you are running Amazon Linux 2, and amazon-linux-extras is not on the path of the ec2-user, you might be running an older version of Amazon Linux. Run this command:
<pre><code>grep PRETTY_NAME /etc/os-release 
</code></pre>
It should output
<pre><code>PRETTY_NAME=&quot;Amazon Linux 2&quot;
</code></pre>
If you don't see that, go back to the ec2 console and drill-down into the details of the instance. Clicking on the AMI should reveal that it corresponds to an older version of Amazon Linux. Some AWS facilities, notably CDK, currently default to Amazon Linux instead of Amazon Linux 2 when creating new instances.

blocks|key|2756175|text|当我试图建立一个基于Amazon+2的码头映像时，我遇到了这个问题。我在当前的答案中没有发现的是，在安装之前，需要在amazon中启用这个对接器。为我工作的Dockerfile命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2756176|RUN+yum+install+-y+amazon-linux-extras
RUN+amazon-linux-extras+enable+docker
RUN+yum+install+-y+docker|code-block|syntax|javascript|2756177|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I came across this question when trying to set up a docker image, based on Amazon Linux 2.
What I didn't find in the current answers is that the docker needs to be enabled in amazon-linux-extras before installing.
Dockerfile commands that worked for me:
<pre><code>RUN yum install -y amazon-linux-extras
RUN amazon-linux-extras enable docker
RUN yum install -y docker
</code></pre>

I wanna create docker image for Amazon ECR.
but <code>yum</code> can't find it in my Amazon Linux2.

<pre><code>[root@*** ~]# yum install -y docker
Loaded plugins: amazon-id, rhui-lb, search-disabled-repos
No package docker available.
Error: Nothing to do
</code></pre>

Next, I tried to use amazon-linux-extras.

but amazon-linux-extras is not found, too.

<pre><code>[root@*** ~]# amazon-linux-extras install docker -y
-bash: amazon-linux-extras: command not found
[root@*** ~]# find / -name 'amazon-linux-extras'
[root@*** ~]$ cat /proc/version
Linux version 4.14.77-81.59.amzn2.x86_64 (mockbuild@ip-10-0-1-59) (gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC)) #1 SMP Mon Nov 12 21:32:48 UTC 2018
</code></pre>

How can I install amazon-linux-extras or create docker image?

How to install docker on Amazon Linux2

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想为Amazon创建码头形象。但yum在我的亚马逊Linux2中找不到它。[root@*** ~]# yum install -y dockerLoaded plugins: amazon-id, rhui-lb, search-disabled-reposNo package docker available.Error: Nothing to do接下来，我尝试使用附加程序。但亚马逊-lin

问如何在亚马逊Linux2上安装码头
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