Different types of Apache virtual-host implementation

Running several name-based web sites on a single IP address.

[root@www ~]# hostname 

http://www.linuxmadeeasy.in

[root@www ~]# ifconfig 

eth0      Link encap:Ethernet  HWaddr 00:0C:29:FD:20:1A

inet addr:172.16.28.175  Bcast:172.16.28.255  Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fefd:201a/64 Scope:Link

UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

RX packets:61 errors:0 dropped:0 overruns:0 frame:0

TX packets:54 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:9213 (8.9 KiB)  TX bytes:8449 (8.2 KiB)

lo        Link encap:Local Loopback

inet addr:127.0.0.1  Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING  MTU:65536  Metric:1

RX packets:8 errors:0 dropped:0 overruns:0 frame:0

TX packets:8 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:576 (576.0 b)  TX bytes:576 (576.0 b)

[root@www ~]# rpm -qa httpd

httpd-2.2.15-45.el6.centos.x86_64

[root@www ~]# rpm -qi httpd

Name        : httpd                        Relocations: (not relocatable)

Version     : 2.2.15                            Vendor: CentOS

Release     : 45.el6.centos                 Build Date: Friday 24 July 2015 04:53:33 AM PDT

Install Date: Tuesday 26 April 2016 06:59:42 AM PDT      Build Host: c6b9.bsys.dev.centos.org

Group       : System Environment/Daemons    Source RPM: httpd-2.2.15-45.el6.centos.src.rpm

Size        : 3090869                          License: ASL 2.0

Signature   : RSA/SHA1, Friday 24 July 2015 01:42:58 PM PDT, Key ID 0946fca2c105b9de

Packager    : CentOS BuildSystem <http://bugs.centos.org&gt;

URL         : http://httpd.apache.org/

Summary     : Apache HTTP Server

Description :

The Apache HTTP Server is a powerful, efficient, and extensible

web server.

[root@www ~]# date

Sat May 28 19:06:52 PDT 2016

May be package version has been updated so we shall go for new updated package

[root@www ~]# yum list installed | grep httpd

httpd.x86_64            2.2.15-45.el6.centos

httpd-tools.x86_64      2.2.15-45.el6.centos

[root@www ~]# yum install httpd

Loaded plugins: fastestmirror, refresh-packagekit, security

Setting up Install Process

Loading mirror speeds from cached hostfile

* base: mirrors.vinahost.vn

* extras: mirrors.vinahost.vn

* updates: mirrors.vinahost.vn

Resolving Dependencies

–> Running transaction check

—> Package httpd.x86_64 0:2.2.15-45.el6.centos will be updated

—> Package httpd.x86_64 0:2.2.15-53.el6.centos will be an update

–> Processing Dependency: httpd-tools = 2.2.15-53.el6.centos for package: httpd-2.2.15-53.el6.centos.x86_64

–> Running transaction check

—> Package httpd-tools.x86_64 0:2.2.15-45.el6.centos will be updated

—> Package httpd-tools.x86_64 0:2.2.15-53.el6.centos will be an update

–> Finished Dependency Resolution

Complete!

[root@www ~]# yum list installed | grep httpd

httpd.x86_64            2.2.15-53.el6.centos

httpd-tools.x86_64      2.2.15-53.el6.centos

[root@www ~]# service httpd status

httpd is stopped

[root@www ~]# chkconfig –list | grep httpd

httpd           0:off 1:off 2:off 3:off 4:off 5:off 6:off

[root@www ~]# netstat -tlpn

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name

tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      2182/sshd

tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN      1991/cupsd

tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      2316/master

tcp        0      0 :::22                       :::*                        LISTEN      2182/sshd

tcp        0      0 ::1:631                     :::*                        LISTEN      1991/cupsd

tcp        0      0 ::1:25                      :::*                        LISTEN      2316/master

[root@www ~]# service httpd start

Starting httpd:                                            [  OK  ]

[root@www ~]# service httpd status

httpd (pid  2761) is running…

[root@www ~]# netstat -tlpn

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name

tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      2182/sshd

tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN      1991/cupsd

tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      2316/master

tcp        0      0 :::80                       :::*                        LISTEN      2761/httpd          

tcp        0      0 :::22                       :::*                        LISTEN      2182/sshd

tcp        0      0 ::1:631                     :::*                        LISTEN      1991/cupsd

tcp        0      0 ::1:25                      :::*                        LISTEN      2316/master

 

[root@www ~]# chkconfig httpd on

[root@www ~]# chkconfig –list | grep httpd

httpd           0:off 1:off 2:on 3:on 4:on 5:on 6:off

[root@www ~]# httpd -t

Syntax OK

/etc/httpd/conf/httpd.conf (Main Configuration File)

[root@www ~]# vim /etc/httpd/conf/httpd.conf

Note:By default port is in Listen state in line number 139 og configuration file

136 Listen 80

I am adding below content at the end of configuration file

[root@www ~]# vim /etc/httpd/conf/httpd.conf

Listen 80

<VirtualHost *:80>

DocumentRoot “/var/www/linuxmadeeasy”

directoryindex firstsite.html

ServerName http://www.linuxmadeeasy.in

</VirtualHost>

[root@www ~]# httpd -t

Warning: DocumentRoot [/var/www/linuxmadeeasy/firstsite.html] does not exist

Syntax OK

[root@www ~]# mkdir /var/www/linuxmadeeasy

[root@www ~]# cd /var/www/linuxmadeeasy/

[root@www linuxmadeeasy]# touch firstsite.html

I am  placing this html content into it

[root@www linuxmadeeasy]# vim firstsite.html 

[root@www linuxmadeeasy]# cat firstsite.html 

<head>

<body>

this is the content in my first web page

</body>

</head

[root@www linuxmadeeasy]# service httpd restart

Stopping httpd:                                            [  OK  ]

Starting httpd:                                            [  OK  ]

Note:Using /etc/hosts file as local DNS for name resolution

[root@www linuxmadeeasy]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

172.16.28.175 http://www.linuxmadeeasy.in

you can use elinks as a tool for cross check from command line 

[root@www ~]# yum install elinks

[root@www ~]# elinks http://www.linuxmadeeasy.in

open browser and check by typing server name you created

——————————————————————————————————————–

With same document root but different server name(Name Based)

[root@www ~]# vim /etc/httpd/conf/httpd.conf

<VirtualHost *:80>

DocumentRoot “/var/www/linuxmadeeasy”

directoryindex firstsite.html

ServerName http://www.linuxmadeeasy.org

</VirtualHost>

[root@www ~]# service httpd restart

Stopping httpd:                                            [  OK  ]

Starting httpd: [Sat May 28 19:55:28 2016] [warn] _default_ VirtualHost overlap on port 80, the first has precedence

[  OK  ]

——————————————————————————————————————–

                                       Port Based Virtual-Hosting

[root@www ~]# cd /var/www/linuxmadeeasy/

[root@www linuxmadeeasy]# ls -l

total 4

-rw-r–r– 1 root root 70 May 28 18:47 firstsite.html

[root@www linuxmadeeasy]# touch secondsite.html

Adding this content here

[root@www linuxmadeeasy]#vim secondsite.html

<head>

<body>

this is the content in my second web page

</body>

</head

[root@www ~]# vim /etc/httpd/conf/httpd.conf

Listen 80

<VirtualHost *:80>

DocumentRoot “/var/www/linuxmadeeasy”

directoryindex secondsite.html

ServerName http://www.linuxmadeeasy.in

</VirtualHost>

[root@www ~]# service httpd restart

Stopping httpd:                                            [  OK  ]

Starting httpd: [Sat May 28 19:18:25 2016] [warn] _default_ VirtualHost overlap on port 80, the first has precedence

(98)Address already in use: make_sock: could not bind to address [::]:80

[  OK  ]

So i did modifications for changing port

as fallows to port 8080

[root@www ~]# vim /etc/httpd/conf/httpd.conf

Listen 8080

<VirtualHost *:8080>

DocumentRoot “/var/www/linuxmadeeasy”

directoryindex secondsite.html

ServerName http://www.linuxmadeeasy.in

</VirtualHost>

[root@www ~]# service httpd restart

Stopping httpd:                                            [  OK  ]

Starting httpd:                                            [  OK  ]

[root@www ~]# netstat -tlpn

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name

tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      2182/sshd

tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN      1991/cupsd

tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      2316/master

tcp        0      0 :::8080                     :::*                        LISTEN      3533/httpd          

tcp        0      0 :::80                       :::*                        LISTEN      3533/httpd

tcp        0      0 :::22                       :::*                        LISTEN      2182/sshd

tcp        0      0 ::1:631                     :::*                        LISTEN      1991/cupsd

tcp        0      0 ::1:25                      :::*                        LISTEN      2316/master

————————————————————————————————————————–

                                                     IP Based Hosting

[root@www ~]# ifconfig

eth0      Link encap:Ethernet  HWaddr 00:0C:29:FD:20:1A

inet addr:172.16.28.175  Bcast:172.16.28.255  Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fefd:201a/64 Scope:Link

UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

RX packets:32838 errors:0 dropped:0 overruns:0 frame:0

TX packets:20930 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:29291357 (27.9 MiB)  TX bytes:2216556 (2.1 MiB)

Since we have only one interface add another interface