Operating Systems Archives

Boost 1.60 RPM packages for CentOS 7.x linux distro

Leave a Comment / Operating Systems, Linux / By 898.ro

Boost 1.60 RPM packages for CentOS 7.x linux distro. Packages have been built from a source package downloaded from Springdale Institute for Advanced Study Required packages to install: – python-devel – python3-devel – bzip2-devel – libquadmath-devel – environment-modules You can easily install them using:

yum -y install python-devel python3-devel bzip2-devel libquadmath-devel environment-modules

1	yum -y install python-devel python3-devel bzip2-devel libquadmath-devel environment-modules

You can find the packages on my Boost 1.60 RPM …

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glibc-debug missing on CentOS 8 latest version

2 Comments / Linux, Operating Systems / By 898.ro

glibc-debug While trying to figure out a specific challange to ctflearn website, I had to run gdb on a binary file to try to get some debug info from there. My CentOS 8.x said I need to install the glibc-debug package in order to get access to all the available debug info generated by gdb. …

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CentOS Stream 8 – how to easily migrate from CentOS 8

Leave a Comment / Linux, Operating Systems / By 898.ro

CentOS Stream You have probably heard the news that CentOS era is gone the way you knew it. CentOS 8 will continue though as a CentOS Stream version you should upgrade to before the end of 2021. I did that, out of curiousity, the upgrade went just fine but there are some things you should …

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Bash script – run same command on multiple servers

Leave a Comment / Bash, Linux / By 898.ro

Bash scripting is fun and can help you automate a lot of things on your linux servers. There are a lot of ways to run the same command on multiple servers. You can use pssh for example, bash scripts, python scripts, automation tools etc. Here’s a simple bash script I wrote to execute the same …

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USB passthrough to KVM guest instance

Leave a Comment / Linux, Virtualization / By 898.ro

USB passthrough to a KVM guest instance: Main server running: CentOS 7.7 x64 latest version. KVM guest machine running RHEL-7.4 (Maipo) but it can be any linux flavor. USB flash drive attached to the main server USB port. I tried all the guides that I could find on internet and even contacted RedHat regarding this. …

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Iptables port forwarding requests to localhost

Leave a Comment / Linux, Networking / By 898.ro

Iptables port forwarding requests to localhost Iptables is a user-space utility program that allows a system administrator to configure the IP packet filter rules of the Linux kernel firewall, implemented as different Netfilter modules. Let’s take this scenario. You have an app which binds locally on 127.0.0.1 on port let’s say 8080. And simply for …

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ZeroMQ PHP-7.3 extension – how to easily install it on cPanel/WHM

3 Comments / cPanel/WHM, Hosting Panels, Linux, Operating Systems / By 898.ro

ZeroMQ, a software library that lets you quickly design and implement a fast message-based application! So I had this project where I was supposed to install Xibo CMS. Among other requirements, XIBO needs php-zmq extension. The server was running cPanel/WHM. For PHP-7.1 and PHP-7.2 installing the php extension is pretty straight forward:

/usr/bin/ea-php71-pecl install channel://pecl.php.net/zmq-1.1.3
/usr/bin/ea-php72-pecl install channel://pecl.php.net/zmq-1.1.3

1 2	/usr/bin/ea-php71-pecl install channel://pecl.php.net/zmq-1.1.3 /usr/bin/ea-php72-pecl install channel://pecl.php.net/zmq-1.1.3

Well, for PHP-7.3 …

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CentOS 5.11 – Have the latest OpenSSL 1.0.2 running on Apache 2.2.3

17 Comments / Apache, Linux, Web Servers / By 898.ro

CentOS 5.x is old and EOL. But there are still lots of servers running this version. I needed for a specific project to be able to run Apache + MOD_SSL on CentOS 5.x and enable TLS v1.2. Since I was not able to compile mod_ssl separately, I had to find another way. Let’s start with …

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Incron – Monitor filesystem events and execute actions

Leave a Comment / Linux, Operating Systems / By 898.ro

Incron is a daemon which monitors filesystem events and executes commands defined in system and user tables. It can be installed on all major distributions using each distribution’s default package manager. Why I needed it? I’m using as a web server for my vps server. That being said, the web root folder where I add …

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