291732 and 291757 - removing references to CentOS

Author: aprilbrinkmeyer

articles/virtual-network/virtual-network-optimize-network-bandwidth.md

@@ -1,6 +1,6 @@
 ---
 title: Optimize Azure VM network throughput
-description: Optimize network throughput for Microsoft Azure Windows and Linux virtual machines, including major distributions such as Ubuntu, CentOS, and Red Hat.
+description: Optimize network throughput for Microsoft Azure Windows and Linux virtual machines, including major distributions such as Ubuntu and Red Hat.
 services: virtual-network
 author: asudbring
 manager: Gerald DeGrace
@@ -13,10 +13,7 @@ ms.author: allensu
 
 # Optimize network throughput for Azure virtual machines
 
-> [!CAUTION]
-> This article references CentOS, a Linux distribution that is End Of Life (EOL) status. Please consider your use and plan accordingly. For more information, see the [CentOS End Of Life guidance](~/articles/virtual-machines/workloads/centos/centos-end-of-life.md).
-
-Azure Virtual Machines (VMs) have default network settings that can be further optimized for network throughput. This article describes how to optimize network throughput for Microsoft Azure Windows and Linux VMs, including major distributions such as Ubuntu, CentOS, and Red Hat.
+Azure Virtual Machines (VMs) have default network settings that can be further optimized for network throughput. This article describes how to optimize network throughput for Microsoft Azure Windows and Linux VMs, including major distributions such as Ubuntu and Red Hat.
 
 ## Windows virtual machines
 
@@ -108,26 +105,6 @@ sudo apt-get install "linux-azure"
 sudo reboot
 ```
 
-### CentOS
-
-In order to get the latest optimizations, we recommend that you create a virtual machine with the latest supported version by specifying the following parameters:
-
-```json
-"Publisher": "OpenLogic",
-"Offer": "CentOS",
-"Sku": "7.7",
-"Version": "latest"
-```
-
-Both new and existing VMs can benefit from installing the latest Linux Integration Services (LIS). The throughput optimization is in LIS, starting from 4.2.2-2. Later versions contain further improvements. Enter the following
-commands to install the latest LIS:
-
-```bash
-sudo yum update
-sudo reboot
-sudo yum install microsoft-hyper-v
-```
-
 ### Red Hat
 
 In order to get the optimizations, we recommend that you create a virtual machine with the latest supported version by specifying the following parameters:

articles/virtual-network/virtual-networks-name-resolution-for-vms-and-role-instances.md

@@ -12,9 +12,6 @@ ms.custom: fasttrack-edit, linux-related-content
 
 # Name resolution for resources in Azure virtual networks
 
-> [!CAUTION]
-> This article references CentOS, a Linux distribution that is End Of Life (EOL) status. Please consider your use and plan accordingly. For more information, see the [CentOS End Of Life guidance](~/articles/virtual-machines/workloads/centos/centos-end-of-life.md).
-
 Azure can be used to host IaaS, PaaS, and hybrid solutions. In order to facilitate communication between the virtual machines (VMs) and other resources deployed in a virtual network, it may be necessary to allow them to communicate with each other. The use of easily remembered and unchanging names simplifies the communication process, rather than relying on IP addresses.
 
 When resources deployed in virtual networks need to resolve domain names to internal IP addresses, they can use one of four methods:
@@ -148,9 +145,9 @@ The default Windows DNS client has a DNS cache built-in. Some Linux distribution
 
 There are many different DNS caching packages available (such as dnsmasq). Here's how to install dnsmasq on the most common distributions:
 
-# [RHEL, CentOS](#tab/redhat)
+# [RHEL](#tab/redhat)
 
-**RHEL/CentOS (uses NetworkManager)**:
+**RHEL (uses NetworkManager)**:
 
 1. Install the dnsmasq package with the following command:
 
@@ -238,9 +235,9 @@ options timeout:1 attempts:5
 
 The resolv.conf file is autogenerated, and shouldn't be edited. The specific steps for adding the *options* line vary by distribution:
 
-# [RHEL, CentOS](#tab/redhat)
+# [RHEL](#tab/redhat)
 
-**RHEL/CentOS (uses NetworkManager)**:
+**RHEL (uses NetworkManager)**:
 
 1. Use a text editor to add the line **`RES_OPTIONS="options timeout:1 attempts:5"`** to the file **/etc/sysconfig/network-scripts/ifcfg-eth0**.