Articles

How-to: Master Your Unruly Services

Services are the programs that run in the background on servers. All OSes come with a set of base services and most software utilizes services as well. Effectively managing servers means controlling these services—knowing what is there, what should and shouldn’t be running, whether or not services will automatically start on (re)boot and who the services should and shouldn’t run as. We’ll go through each of these pieces to see how a strong service management policy can help reliability and security in the data center and how configuration management and testing is key.

Filed under: configuration management, server management, how-to, IT operations

UpGuard 101: SSL Certificate Expiration

This article is part of our ongoing UpGuard 101 series that focuses on ways to use UpGuard to keep your environment ready and yourself sane in real world scenarios.

Filed under: configuration testing, configuration management, ssl, UpGuard101, how-to, server

Tripwire vs Puppet

 

In terms of what they do and how they work, Tripwire and Puppet have little overlap. Tripwire is for monitoring changes and Puppet is for configuring servers. The reason for tracking changes and configuring servers, however, brings them together as two approaches to compliance automation and, ultimately, reducing risk in computing systems. We’re going to compare Tripwire to Puppet here, not necessarily as identical tools, because they do have mostly different functionality sets, but how they fit into an IT environment.

Filed under: configuration management, puppet, devops, tripwire

UpGuard 101: Managing IIS Server Configs

This article is part of our ongoing UpGuard 101 series that focuses on ways to use UpGuard to keep your environment ready and yourself sane in real world scenarios.

Filed under: configuration management, Configuration Drift, IIS, UpGuard101, how-to, IT operations, server

[Infographic] Ansible vs Chef

This is a tale of a newcomer vs a relative oldie in the Configuration Management (CM) arena. Both are tools to help the sysadmin or devops professional to better manage large numbers of servers. They excel at stuff like repetitive task automation, simultaneous deployment of apps and packages to a group of servers, or configuration and provisioning of new servers from scratch.

Filed under: Infographic, chef, configuration management, ansible

Opsworks vs Hosted Chef

Opsworks and Chef are very similar Configuration Management (CM) tools. Opsworks is actually built on the Chef framework, then customized for Amazon’s giant cloud environment AWS. Hosted Chef is an IaaS solution from Chef parent company Opscode, in which they host the Chef server for you, and it in turn manages and communicates with your nodes, which are most likely also hosted in a cloud infrastructure such as Amazon’s EC2 infrastructure. So both solutions are evolutions of the traditional CM tool, now tweaked for cloud-hosted environments. Let’s peek behind their respective curtains.

Filed under: chef, configuration management, devops, opsworks, hostedchef

Pallet vs Chef

There has recently been a huge growth in the number of Configuration Management (CM) tools available to the sysadmin or DevOps professional. Well, ‘huge growth’ really means an increase from just 2 or 3 in the early 2000’s (CFEngine comes to mind as one of those early pioneers), to about 20 today. Many of these are little-known niche products, but some bigger names like Chef have passionate adherents, and equally passionate detractors.

Filed under: chef, configuration management, pallet

Pallet vs Puppet

Configuration Management (CM) tools like Pallet and Puppet are to sysadmin and DevOps professionals what a dishwasher is to an exhausted homeowner who’s just come home to the pile of dirty dishes from last night’s party – a huge life and time saver.

Filed under: configuration management, puppet, devops, pallet

Ansible vs Salt

The sysadmin or devops pro of today typically needs to manage a large numbers of servers, often automating some tasks or performing the same action several times over, like installing and provisioning a new server, rebooting a set of servers at specific times every day, deploying the same package to a group of servers, and so on. For such busy folks, Configuration Management (CM) tools like Ansible and Salt are absolute lifesavers.

Filed under: configuration management, ansible, salt

Puppet vs Salt

Two factors have resulted in a corresponding increase in the number of servers supported by today’s sys admin - virtualization and the massive growth of computing in the organization. Even in small and medium-sized companies, it is not unheard of to have a sys admin supporting 4 servers or so. And of course, this number only goes up as the size of the organization increases. Enter configuration management (CM) tools like Puppet, Chef and Salt. Make no mistake, any of these tools will truly simplify your life as a sysadmin, by automating and minimizing the drudgery of manual server setup and creation. But which one should you go for? As with IOS vs. Android vs. Windows Phone, X-Box vs. PlayStation vs. Wii, each has both diehard loyalists and vociferous critics. The answer, again as happens in many of these wars, is that you need to match and compare each contestant’s capabilities to your own needs, and judge for yourself.

Filed under: configuration testing, configuration management, devops, automation