Introduction Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges and IP sets. There is a separation of runtime and permanent configuration options. It also provides an interface for services or applications to …

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Introduction In this article, we will see together 3 famous Open Source solutions used in most common Web Architectures : HAProxy, Corosync and Pacemaker. First, let’s see together the different kind of clusters and then, we will have an overview of the 3 solutions mentioned above. Clustering Architectures High Performance Clusters The first type of cluster …

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