In this section, we are going to cover a definition of clusters and look at some trending container clustering solutions available on the market. There are many mature solutions available. We will be using architectural diagrams in this section, as pictures can often help us understand these concepts more clearly.
A recent survey by CNCF (https://www.cncf.io/) shows that organizations are increasingly using containers. We can see that more organizations are using 250+ containers in production-level deployment compared to previous years:
The preceding screenshot can be found at the following link: https://www.cncf.io/blog/2017/12/06/cloud-native-technologies-scaling-production-applications/.
As container adoption is increasing, old concerns are diminishing, and new challenges are coming to the forefront of container management...