Edit apache configuration file and modify as follows. As per my installation, configuration file is /etc/httpd/conf/httpd.conf
<Directory /var/www/> Options Indexes FollowSymLinks AllowOverride None Require all granted </Directory>
To
<Directory /var/www/> Options Indexes FollowSymLinks AllowOverride All Require all granted </Directory>
Looks like port 80 is not opened . Run the following command and try again.
$ sudo firewall-cmd --zone=public --add-port=80/tcp --permanent $ sudo firewall-cmd --reload
Another reason could be web server is down.
Follow the below steps to install apache in CentOS 7
Install EPEL Repository
In order to install EPEL repository execute following command:
sudo yum install epel-release -y
Install required tools for compilation
sudo yum install autoconf expat-devel libtool libnghttp2-devel pcre-devel -y
Download and unpack source code
Here are the links to the packages:
Apache httpd – https://github.com/apache/httpd/releases
APR – https://github.com/apache/apr/releases
APR-util https://github.com/apache/apr-util/releases
wget https://github.com/apache/httpd/archive/2.4.33.tar.gz wget https://github.com/apache/apr/archive/1.6.3.tar.gz wget https://github.com/apache/apr-util/archive/1.6.1.tar.gz
tar -zxvf 2.4.33.tar.gz tar -zxvf 1.6.3.tar.gz tar -zxvf 1.6.1.tar.gz
APR and APR-Util
Apache requires APR library for compilation. You need to copy the source codes to correct directory:
cp -r apr-1.6.3 httpd-2.4.33/srclib/apr cp -r apr-util-1.6.1 httpd-2.4.33/srclib/apr-util
It’s important to not to include version number in APR directories. If you just copy apr-1.6.3 without changing the name, it will give you a warning about missing apr directory.
Compile source code
cd httpd-2.4.33 ./buildconf ./configure --enable-so make
Install HTTPD
sudo make install
Add Apache executables to PATH
If you try to type httpd -v in your command line, it will result in command not found. That’s because httpd is not on your $PATH. I’d like to have all executables from Apache available from everywhere. In order to achieve that, create file
sudo vi /etc/profile.d/httpd.sh
and paste there following contents:
pathmunge /usr/local/apache2/bin
Save the file, log out and log in from your current session to reload your profile. After that you should be able to use httpd -v command:)
Add Systemd entry
Starting, restarting, and enabling Apache on server start via systemctl command is very important thing. You need to create another file:
sudo vi /etc/systemd/system/httpd.service
and paste there following contents:
[Unit] Description=The Apache HTTP Server After=network.target [Service] Type=forking ExecStart=/usr/local/apache2/bin/apachectl -k start ExecReload=/usr/local/apache2/bin/apachectl -k graceful ExecStop=/usr/local/apache2/bin/apachectl -k graceful-stop PIDFile=/usr/local/apache2/logs/httpd.pid PrivateTmp=true [Install] WantedBy=multi-user.target
Save the file and reload the systemctl daemon
sudo systemctl daemon-reload
Now you can try to start your Apache httpd server with following command:
sudo systemctl start httpd
Create dedicated user and group for Apache
sudo groupadd www sudo useradd httpd -g www --no-create-home --shell /sbin/nologin
Edit the httpd.conf file and update the user ad group.
User httpd Group www
Now restart the server service httpd restart
So that’s it. You have fully working Apache httpd in latest version installed on your system .
This process might take some time, but you will have full control over httpd.
DLL (“dynamic link library”) files such as pthreadGC2.dll are small programs, similar to EXE (“executable”) files, which allow multiple software programs to share the same functionality
HTTP is a session less protocol. A connection is made to transfer a single file and closed once the transfer is complete. This keeps things simple but it’s not very efficient.
To improve efficiency something called KeepAlive was introduced. With KeepAlive the web browser and the web server agree to reuse the same connection to transfer multiple files.
Apache directives are a set of rules which define how your server should run, number of clients that can access your server, etc. you can change them by editing the httpd.conf and related files to meet your requirements
Below given are the some of the important directives
This module uses a rule-based rewriting engine (based on a regular-expression parser) to rewrite requested URLs on the fly. It supports an unlimited number of rules and an unlimited number of attached rule conditions for each rule, to provide a really flexible and powerful URL manipulation mechanism. The URL manipulations can depend on various tests, of server variables, environment variables, HTTP headers, or time stamps. Even external database lookups in various formats can be used to achieve highly granular URL matching.
This module operates on the full URLs (including the path-info part) both in per-server context (httpd.conf) and per-directory context (.htaccess) and can generate query-string parts on result. The rewritten result can lead to internal sub-processing, external request redirection or even to an internal proxy throughput.
Below given are the some of the important Apache modules
This module allows user-specific directories to be accessed using the http://example.com/~user/ syntax.
The UserDir directive sets the real directory in a user’s home directory to use when a request for a document for a user is received.
If the end user terminates the connection when the server response was being formed or was being transferred, we see “connection reset by peer” in the error log.