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In: Fedora, RHEL5, RHEL6, RHEL7, Yum
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When you update an RPM package in Redhat/Fedora linux, you will be downloading the entire package even if only a single file in package has changed. This is not an issue if network bandwidth is not an issue but if you have servers in remote sites with limited bandwidth or your PC/Laptop is connected to a low bandwidth network or internet or even if you use your internet on a pay as you go network then can be a big concern.Read More →

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In: Fedora, Security
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FirewallD is the default firewall daemon used in Fedora linux. FirewallD provides a dynamically managed firewall with support for network/firewall zones to define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings and for ethernet bridges and has a separation of runtime and permanent configuration options. It also supports an interface for services or applications to add firewall rules directly.Read More →

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In: Fedora, RHEL5, RHEL6, RHEL7, Software
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linux-dash is a drop-in, minimal-dependency web dashboard for linux servers. It provides a web interface for useful linux server information and statistics. Linux-dash is not a network monitoring tool rather a tool to have a quick nice too, see performance stats real-time on a single system. linux-dash support multiple Linux OS platforms and major browsers and can run on Node.js, PHP/Apache, Go and Python middleware platforms.Read More →

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In: Fedora, Node.js, RHEL5, RHEL6, RHEL7, Software
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Node.js® is a JavaScript runtime built on Chrome’s V8 JavaScript engine which uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. Node.js’ package ecosystem, npm, is the largest ecosystem of open source libraries in the world. As an asynchronous event driven framework, Node.js is designed to build scalable network applications.Read More →

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In: Fedora
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Starting Fedora 22, we can now do a in place system upgrade from the previous version and it is not too difficult a task as well. Let’s upgrade from Fedora 22 to Fedora 23 in place. I use here a fresh install of Fedora 22 and upgrade it to Fedora 23. The tasks require root privileges and for convenience I become root user here in this system.Read More →

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In: RHEL6, RHEL7
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In RHEL/CentOS 6 and 7, yum has the ability to rollback a previous package operation like update, install or even remove. This is particularly useful if you have done an update that has gone wrong. Redhat though suggests updates to some packages like GLIBC may be tricky and may not work as expected and hence a file system snapshot would give you that extra layer of protection.Read More →