Installing Development Tools
Development tools are required for building Python modules. To install the necessary tools and libraries type:
sudo yum groupinstall 'Development Tools'
Enable Software Collections (SCL)
Software Collections , also known as SCL is a community project that allows you to build, install, and use multiple versions of software on the same system, without affecting system default packages. By enabling SCL you will gain access to the newer versions of programming languages and services which are not available in the core repositories.
CentOS 7 ships with Python 2.7.5 which is a critical part of the CentOS base system. SCL allows you to install newer versions of python 3.x alongside the default python v2.7.5 so that system tools such as yum will continue to work properly.
To enable SCL, you need to install the CentOS SCL release file. It is part of the CentOS extras repository and can be installed by running the following command:
sudo yum install centos-release-scl
Continue reading “Upgrade Python 2.7 to 3.6 and installing pip on CentOS 7” »
yum install fontconfig libXext freetype libpng zlib libjpeg-turbo libpng libjpeg openssl icu libX11 libXext libXrender xorg-x11-fonts-Type1 xorg-x11-fonts-75dpi
sudo yum install -y https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox-0.12.5-1.centos7.x86_64.rpm
wkhtmltopdf http://www.google.com google.pdf
OpenDKIM is method to digitally sign & verify emails on the mail servers using public & private keys. In other words opendkim implements the DKIM (DomainKeys Identified Mail) standard for signing and verifying email messages on a per-domain basis. DomainKeys are implemented to reduce the chances of outgoing mails to be marked as SPAM.
In this post we will demonstrate how to install & configure DomainKeys with postfix (MTA) on CentOS 7, i am assuming Postfix is already installed with following domain and hostname.
Hostname = mail5.freshdaymall.com
Domain = freshdaymall.com
Step:1 Set EPEL Repository using below rpm command
OpenDKIM package is not available in the default yum repositories but available in CentOS 7 EPEL repositories
[root@mail5 ~]# rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
Step:2 Install OpenDKIM Package using yum
[root@mail5 ~]# yum install -y opendkim
Step:3 Run below Command to create keys
Execute the below command to create public & private keys under folder “/etc/opendkim/keys” Continue reading “Configure DomainKeys- DKIM (OpenDKIM) with Postfix on CentOS 7” »
Step 1 » Assign hostname for the server using the below command.
[root@krizna ~]# hostnamectl set-hostname mail.krizna.com
Step 2 » Make a host entry with your IP in /etc/hosts file.
Step 3 » Now start installing packages.
[root@krizna ~]# yum -y install postfix dovecot
After package installation continue with postfix configuration. Continue reading “Setup mail server on centos 7 using postfix and dovecot” »
Step 1 – Setup Yum Repository
In the first step install all the required yum repositories in your system used in the remaining tutorial for various installations. You are adding REMI, EPEL, Webtatic & MySQL community server repositories in your system.
CentOS / RHEL 7
yum install epel-release
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
rpm -Uvh http://repo.mysql.com/mysql-community-release-el7-7.noarch.rpm
Step 2 – Install PHP 7.4
Now install php 7 packages from webtatic rpm repository using following command.
yum --enablerepo=remi-php74 install php
Now install required php modules. Use following command to list available modules in yum repositories.
yum --enablerepo=remi-php74 search php
Now check all listed modules in above command and install required modules like below.
yum --enablerepo=remi-php74 install php-mysql php-xml php-soap php-xmlrpc php-mbstring php-json php-gd php-mcrypt
For additonal php function to install use the command syntax below-
yum --enablerepo=remi-php74 install <your-php-funciton>
Continue reading “Install LAMP with PHP 7.4 on FastCGI/CGI configuration on CentOS 7” »
In this tutorial, I use the hostname server1.example.com with the IP p 192.168.0.100. These settings might differ for you, so you have to replace them where appropriate.
I will add the EPEL repo here to install latest phpMyAdmin as follows:
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*
yum -y install epel-release
To edit files on the shell, I’ll install the nano editor. If you prefer vi for file editing, then skip this step.
yum -y install nano
Installing MySQL / MariaDB
MariaDB is a MySQL fork of the original MySQL developer Monty Widenius. MariaDB is compatible with MySQL and I’ve chosen to use MariaDB here instead of MySQL. Run this command to install MariaDB with yum:
yum -y install mariadb-server mariadb
Then we create the system startup links for MySQL (so that MySQL starts automatically whenever the system boots) and start the MySQL server: Continue reading “Install LAMP on CentOS 7 with PHP 5.4/7.0/7.1/7.2/7.3/7.4” »
The mod_rewrite module is enabled by default on CentOS 7. If you find it is not enabled on your server, you can enable it by editing 00-base.conf file located in /etc/httpd/conf.modules.d/ directory.
sudo nano /etc/httpd/conf.modules.d/00-base.conf
Add or uncomment the following line:
LoadModule rewrite_module modules/mod_rewrite.so
Save and close the file, then restart the httpd service:
sudo systemctl restart httpd
Enable .htaccess File
Once the mod_rewrite module has been activated, you can set up your URL rewrites by creating an .htaccess file in your default document root directory. A .htaccess file allows us to modify our rewrite rules without accessing server configuration files. For this reason, .htaccess is critical to your web server. Before we begin, we need to allow Apache to read .htaccess files located under the /var/www/html directory. Continue reading “Enable mod_rewrite for Apache on CentOS 7” »
[root@www ~]# yum -y install httpd
# remove welcome page
[root@www ~]# rm -f /etc/httpd/conf.d/welcome.conf
Configure httpd. Replace server name to your own environment.
[root@www ~]# vi /etc/httpd/conf/httpd.conf
# line 86: change to admin's email address
# line 95: change to your server's name
# line 151: change
# line 164: add file name that it can access only with directory's name
DirectoryIndex index.html index.cgi index.php
# add follows to the end
# server's response header
# keepalive is ON
[root@www ~]# systemctl start httpd
[root@www ~]# systemctl enable httpd
Install other required packages.
[root@dlp ~]# yum -y install rsync createrepo
Continue reading “Build a Centos 7 Repo” »
H5ai is a modern file indexer for HTTP web servers with focus on your files. Directories are displayed in a appealing way and browsing them is enhanced by different views, a breadcrumb and a tree overview. Initially h5ai was an acronym for HTML5 Apache Index but now it supports other web servers too.
Step 1 – Installing (Requires PHP 5.5+)
Copy folder _h5ai to the document root directory of the web server: DOC_ROOT/_h5ai.
├─ your files
└─ and folders
Add /_h5ai/public/inde to http conf file Continue reading “Install h5ai – file indexer on Centos 7” »
If you want to execute logical backups using an alternative to mysqldump that works with parallel threads giving faster execution times mydumper is the correct tool.
In order to use mydumper and myloader you can use the following sample commands:
For dumping/exporting database:
mydumper -u <username> -p <password> -B <database name> -d /path/to/dump
For importing database (for percona or master-master replication):
myloader -u <username> -p <password> -B <database name> -d /dump/path --enable-binlog
Continue reading “Install Mydumper Myloader on Centos 7” »