Help guide to install Apache http server as Docker container

Introduction

If you used docker, you might be loving the convenience of creating apps on the fly with little effort. You may be interested to install an apache http server. This guide will help to do this.

Steps to install

Pull apache docker image

[root@ubuntu /personal/apachetest]# docker images | grep httpd

[root@ubuntu /personal/apachetest]# docker pull httpd

Using default tag: latest

latest: Pulling from library/httpd

386a066cd84a: Pull complete

a11d6b8e2fac: Pull complete

c1fdc7beec37: Pull complete

bd14a67deca2: Pull complete

92b34ad02810: Pull complete

Digest: sha256:5b4a3c85b4b874e84174ee7e78a59920818aa39903f6a28a47b9278f576b4a4d

Status: Downloaded newer image for httpd:latest

[root@ubuntu /personal/apachetest]# docker images | grep httpd

httpd latest 50f10ef90911 12 days ago 193.3 MB

[root@ubuntu /personal/nstrace/cpx]#

Create a httpd docker instance

Below command creates an http docker instance for which current host directory(/personal/apachetest in this case) is the root directory. Note that we need to create index.html to current host directory

[root@ubuntu /personal/apachetest]# docker ps | grep apache

[root@ubuntu /personal/apachetest]# docker run -dit --name my-apache-app -p 80 -v "$PWD":/usr/local/apache2/htdocs/ httpd:latest

baef2d1920f46b5f0552edaa58123d5e02afb307f7bf86295d7842862d43c73d

[root@ubuntu /personal/nstrace/cpx]# docker ps | grep apache

baef2d1920f4 httpd:latest "httpd-foreground" 10 seconds ago Up 9 seconds 0.0.0.0:32828->80/tcp my-apache-app

Create index.html in the host current directory

Create a index.html file in the host current directory. This file will be returned for http query.

[root@ubuntu /personal/apachetest]# cat index.html

<html>

<head>

<title>Sample "Hello, World" Application</title>

</head>

<tr>

<td>

</td>

<td>

<h1>Sample "Hello, World" Application</h1>

</td>

</tr>

</table>

<p>This is the home page for the HelloWorld Web application. </p>

<p>To prove that they work, you can execute either of the following links:

<ul>

<li>To a <a href="hello.jsp">JSP page</a>.

<li>To a <a href="hello">servlet</a>.

</ul>

</body>

</html>

Verify setup

Inspect apache container

Observe that httpd is running in the Apache container

[root@ubuntu /personal/apachetest]# docker exec -it my-apache-app bash

root@baef2d1920f4:/usr/local/apache2# ps ax

PID TTY STAT TIME COMMAND

1 ? Ss+ 0:00 httpd -DFOREGROUND

7 ? Sl+ 0:00 httpd -DFOREGROUND

8 ? Sl+ 0:00 httpd -DFOREGROUND

9 ? Sl+ 0:00 httpd -DFOREGROUND

91 ? Ss 0:00 bash

97 ? R+ 0:00 ps ax

You can get default config file at below location. To modify it, simply replace with modified config file

root@baef2d1920f4:/usr/local/apache2# ls /usr/local/apache2/conf/httpd.conf

/usr/local/apache2/conf/httpd.conf

Access to http server

Below command access http page. Note host machine IP (1.1.1.1) and my-apache-app port (32828). Also the returned file is index.html which is referred in above write-up.

root@ns# curl http:/1.1.1.1:32828

<html>

<head>

<title>Sample "Hello, World" Application</title>

</head>

<tr>

<td>

</td>

<td>

<h1>Sample "Hello, World" Application</h1>

</td>

</tr>

</table>

<p>This is the home page for the HelloWorld Web application. </p>

<p>To prove that they work, you can execute either of the following links:

<ul>

<li>To a <a href="hello.jsp">JSP page</a>.

<li>To a <a href="hello">servlet</a>.

</ul>

</body>

</html>

Reference

https://hub.docker.com/_/httpd/

http://pubs.vmware.com/vfabric53/index.jsp?topic=/com.vmware.vfabric.tc-server.2.9/getting-started/tutwebapp-index-html-file.html

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