Install docker swarm and configure cluster

Docker Swarm is a native clustering for Docker. The best part is that it exposes standard Docker API meaning that any tool that you used to communicate with Docker (Docker CLI, Docker Compose, Dokku, Krane, and so on) can work equally well with Docker Swarm. That in itself is both an advantage and a disadvantage […]
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SaltStack installation on Centos 7

SaltStack, or Salt is a tool which is open source configuration management software and remote execution engine, code deployment and communication topologies. Salt competes with popular cofiguration management tools like chef and puppet. Salt claims to scale up to tens and thousands of servers. Salt has been designed to be highly modular and easily extensible. […]
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Enable Outbound simple NAT on FirewallD

Firewalld firewalld provides a dynamically managed firewall with support for network “zones” to assign a level of trust to a network and its associated connections and interfaces. It has support for IPv4 and IPv6 firewall settings. It supports Ethernet bridges and has a separation of runtime and permanent configuration options. It also has an interface […]
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