window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date());gtag('config', 'UA-172638165-1');

Nexperteam Cloud Migration Experience Blog

Home>Blog>
08 02, 2021

A tech perspective on what cloud truly is

By |Categories: Cloud Migration|Tags: |

We on-boarded a new guy recently. He called himself a blank canvas but we know that this is not true. However, it brings us back to explaining the basics. One of the most basic questions turns out to be quite deceiving. What is Cloud?

One of our coworkers shared an article on Cloud Flair, which explains that Cloud is about two basic things: not owning your own hardware and virtualization. Next, they bring in all the buzz words: IAAS, PAAS and SAAS to end up with FAAS. Running everything As-A-Service, Infrastructure, Platform and Service to end Functions. Nice, we have all

12 01, 2021

Performance and where it all can go wrong

By |Categories: Best Practices, How to, Security|Tags: , |

Modern web applications come with a complex set of underlying services. When the applications are not performing and the response time to deliver a page is high, the search to track the problem down starts.

In this article, we’ll go through performance on different levels of delivering a web page to the browser and we’ll provide an example of troubleshooting performance issues.

Performance on different levels

Understanding why a web page under-performs is seldom easy. Let’s have a look at what actually happens when things get slow. Understanding the full process of delivering a web

28 12, 2020

Creating happiness with a few lines of code

By |Categories: How to|

We all love making people happy. And happiness sometimes comes with just that little bit of extra help. Recently we had a request for the simplest thing you could possibly imagine. One of our coworkers wanted something that converted a set of lines into an excel file. The import capabilities of excel are virtually limitless. But that doesn’t mean that the tools are always easy to use.

Let’s analyze the problem. So we have a list of lines where every line has to be in a separate excel cell. Good. And when does

21 12, 2020

Security and obscurity

By |Categories: Best Practices, Security|Tags: , |

It is unfortunate that talking about security is still deemed dangerous. The idea is that if you do not share the information it will be harder to find the security hole. The opposite is true as well. By not talking about how things work, people start assuming. This inevitably leads to many problems and is often the start of many security problems that go undetected.

Let’s have a look at a very concrete example.

Two-factor authentication

Not so long ago, the one and only barrier grant someone access to an application was the typical “user

03 12, 2020

How to deal with cloud databases and network latency

By |Categories: Best Practices, Cloud Migration, How to|Tags: , |

“We moved our database into the cloud and it was terrible”. Or wasn’t it?

When we started moving a large database into the cloud we drafted a migration scenario to minimize the downtime. Migrating from one type of database to another one is seldom an easy game. Combine this with the fact the there was a lot of data to be shipped and you can understand the raw complexity.

We managed to set up an incremental process that on the first run would take several days, the second run about a day and then

25 11, 2020

To Cloud or not to Cloud

By |Categories: Cloud Migration|Tags: |

When it comes to the infrastructure we are living interesting times. Big cloud providers are fighting to get a piece of the cake and make it as big as possible by bolting additional services to it. The process of mergers and acquisitions has been going on for a number of years and now that BigTech is trying to corner the market we will see more consolidation.

We estimate the end result to be a handful of players trying to focus on specific areas and gain as much market share as possible. For example, IBM focuses on AI & NLP, Google on

17 11, 2020

NTP Troubleshooting

By |Categories: How to|Tags: |

When it comes to our on-premise cloud infrastructure we are old school. We use a RedHat RHEV visualization stack and a GlusterFS storage stack. It’s a pretty nifty setup and one can hardly call it outdated. It has been up and running for several years now with little problems.

Monitoring the infrastructure and taking care of small errors when they occur will ensure that our infrastructure is resilient and stable.

In this post, we’ll share a few insights into how we troubleshoot an NTP issue which was undercover as a network stack issue.

NTP time service

To make sure that all our machines run

10 11, 2020

Databases and History Maintenance

By |Categories: Best Practices, How to|Tags: , |

Most companies have a large set of structured data. That is why it is important to keep a close eye on the constancy of that data, to make sure you have good backups and the data is always accurate, available and actionable.

One of the most frustrating questions a support engineer faces is “but can you tell us what was there before?” Many people seem to think that structured data also implies that you can tell what the data was at any point in time. As admin wizards, we pull our backups, restore them quickly on a new machine and indicate

06 11, 2020

Monitoring your cloud infrastructure

By |Categories: Best Practices, How to|Tags: , |

While most cloud providers have a monitoring system in place, we prefer to run our own. The main reason is that if you drill down you want to be able to monitor the services that are relevant to your business. This often means you monitor very specific services or build your own plugins to scan whatever you find important.

What to use

There are many monitoring solutions out there that offer a multitude of plugins and add-ons. There are two aspects to consider. You need a collector and a system to get the information to the collector. Some systems have a server

27 10, 2020

A new perspective on cloud and data backups

By |Categories: Best Practices, How to|Tags: |

Backing up critical business data is essential to ensuring business continuity in case of data breaches, system outages, cybercrime, or natural calamities.

While many service providers offer backup-as-a-service, we will not be talking about moving your personal data into the cloud.

In this paper, we will be focusing on your cloud infrastructure and how you can and must be taking care of backing up relevant data, as much as you would do when you run your own in-house infrastructure.

Noteworthy, the backup strategy differs based on the type of data. But how do we differentiate the data categories? A possible way to determine

Load More Posts
Go to Top