Cloudera Blog

FEBRUARY 12, 2024

In Cloudera deployments on public cloud, one of the key configuration elements is the DNS. If the DNS is set up less ideal than it could be, connectivity and performance issues may arise. In this blog, we’ll take you through our tried and tested best practices for setting up your DNS for use with Cloudera on Azure.

DNS 52

DNS IP Address Server Firewall 52

Kentik

DECEMBER 13, 2021

To properly monitor them, it’s paramount to find out which servers your end users are connecting to. This is sort of a long shot, but are you using a corporate DNS server? You might try temporarily switching to a public DNS like Google’s 8.8.8.8. DNS lookups can introduce significant latency on new connections.

Application 95

Application DNS Routers Server 95

Kentik

MARCH 13, 2023

How it used to be When I started my career in networking, servers were down the hall or in the campus data center. Why do we need to create site-to-site VPNs or some sort of modern SD-WAN topology connecting all our branches when almost all traffic goes to the public internet and the cloud? Yes, of course, I’m oversimplifying here.

WAN 98

WAN Wide Area Network Topology Internet 98

Kentik

JANUARY 28, 2021

While synthetics can be triggered or collected via device telemetry interfaces, they are actually a broader category spanning client and server endpoints, network elements, and internet-wide locations performing network and application-layer testing. What are my frequently queried domain names and talkative DNS clients?

Network 72

Network Networking DNS IP Address 72

Kentik

DECEMBER 18, 2019

These include SNMP, DNS, RADIUS and streaming telemetry. we never initiate connections to the customers) on servers running Debian GNU/Linux. The load balancer node rewrites the source MAC of the packet and forwards the packet to the real server that’s running the BGP code. BGP routing data is another important data source.

Server 13

Server Topology TCP Network 13

Kentik

SEPTEMBER 20, 2021

After the DNS lookup and the ARP, the host reaches out to the IP address of the destination using a SYN in order to open a connection. If the latency is the destination server, I might be out of luck. Example of Kentik Synthetics’ performance mesh user interface that can report latency continuously, even in complex mesh topologies.

TCP 116

TCP Routers Bandwidth IP Address 116

Kentik

APRIL 5, 2023

Well, that depends on the network topology of the network but also on which CDN and how that CDN maps the end users to a cluster. Movie Open Connect is unique among the CDNs since they do not rely on the DNS system to direct the end user to the suitable cache. The typical DNS-based flow for a content server by a CDN looks like this: 1.

Network 52

Network Networking DNS IP Address 52