Archives for Networking Essentials - Page 2
Kubernetes Networking
Three Guiding Principles Networking Use Cases Within Same Pod - Just Use Localhost On Same Node – Pod to Pod – Use Bridge Networking On Different Nodes –…
Kubernetes components
Master aka Control Plane API Server Cluster Store (Store State) Scheduler Controller Manager Kubectl (CLI) interacts with the API Server API Server Cluster Store Scheduler – Pod Affinity (two…
kubernetes controller components
Controller components There are two main components of a controller: Informer/SharedInformer and watches for changes on the current state of Kubernetes objects and sends events to Workqueue where events are…
ipconfig–virtual ethernets and real ethernets, docker networking daemon
When you run docker on your local host, you get a NAT network for free. This comes with a private address space. To view the details of this network, just…
Questions to ask for an AD customer and AD Recommendations
How many domains in all, are in play? If there are multiple domains, what is the purpose of each domain? How may Domain Controllers per domain (in general, it is…
ARG vs ENV vs Powershell in Dockerfiles
ARGs in dockerfile are great for passing in build time paramaters (before a container is built)ENVs in dockefile are for passing in run time parameters (once a container is already…
Quick SMTP Server Check
a) From Powershell - Test-NetConnection -port 25 b) telnet (install telnetclient from windows features) and, in a cmd prompt (or PS prompt), telnet 25
Managed Service Accounts, gMSA and Active Directory
One of the more interesting new features of Windows Server 2008 R2 and Windows 7 is Managed Service Accounts. MSA’s allow you to create an account in Active Directory that…
IPSEC VERSUS SSL
IPSEC The majority of IPSec VPN solutions require third-party IPSec hardware and / or ; Each desktop needs the client software and licenses, which can lead to a financial and…
CNAME record for Subnet DNS resolution on AWS
If your web server is able to resolve , but not , chances are that you are missing a CNAME entry in your DNS. On AWS, this would mean going…