We're here! The third and final article in our series discussing server monitoring tools. If you're just joining us, you can check out Part I and Part II. Today we're focusing on cloud monitoring solutions, so let's get into it.
Today, GNU/Linux based operating systems are considered to be among the most secure available. They're used by a majority of the largest super computers we have available, far outpacing the amount of computers running UNIX or Windows. And one of the reasons Linux holds its reputation for security is the way it handles user access. Its user and group control functions was developed around the time of the first UNIX systems, and these controls allow file owners to control access to reading, execution, and writing of files, directories, processes and other system tools.
This is the second part of our ongoing review of Linux monitoring tools you're likely to encounter in the market. Follow this link for the first article we posted on the subject.
In this review, we'll be going over monitoring software that tends to focus on network monitoring primarily.
Maintaining server uptime is an absolute necessity in pretty much every environment in our modern life, and server monitoring solutions serve that specific purpose. Server monitoring systems keep tabs on where you're server's at, where it's running into bottlenecks or other issues, helps maintain backups and reserve copies. A good server monitoring platform is really like a tool chest; a collection of things that seem small on their own, but they work together to both secure your server and allow you to react in critical situations.
Within most operating systems, including all Linux distros, there exists a range of ports that are considered privileged ports. All privileged ports range from 1 to 1023 and can accessed by root user and, in most cases, can't be accessed for any other users. So what we're going to do is rebind some ports to allow users access without compromising your root account.
Ansible kind of exploded into popularity almost immediately after its release in 2012, and has become a staple for network administrators. In today's article, we're just going to immediately dive in and give you a good idea of what Ansible does and how you can get the most out of it.
Ansible is an open source automation platform. What that means is that it lets you manage software installations, updates, configurations and tasks within your network environment. It's especially handy in situations where you need to carry out sequential operations. It's also comparably easy to use, when put against other similar solutions.
You got a irregularly high amount of traffic coming into your server. So much, in fact, that it's slowing down your server and other clients are timing out trying to access it. Looks like you're under a DDoS attack. DDoS, or destributed denial of service, is a specific way to attack and distabilize a server, by flooding it with traffic from one or more sources.
In the vast majority of cases, servers tend to get broken into for the following reasons:
As a systems administrator, it's your job to keep tabs on your server. To address the first point, keeping up with antivirus definitions updates and making sure you have the latest service packs for your software, get creative with passwords and change them regularly. Do everything you can to address the above concerns before a breach happens.
But what do we do once we know we have a breach?
This is entirely a tutorial article. We're mostly going to give you a summary of GIT and walk you through installing it on Centos and configuring it to work with GITHUB.
GIT is a version control tool that helps you to maintain and sync versions of things like files, directories, or code between between developers and teams. People use it to make sure everyone is working on the same version of code, to track changes and maintain progress. GIT is reliable, widely used, open and free! So let's take you through the setup.
It's fairly common to encounter a problem when setting up a private email server; your outgoing email sometimes gets classified as spam. WHOOPS!
Well we're here to help you avoid this awkward situation!