Editing GSTN - Satelite As Build Document (section)

===== 1.9. Bandwidth Throttling and Blackout times while patch process =====





As RHN Satellite (Patch Solution) will be installed as RHEV Guest (VM) , The QOS of RHEV will be used for Bandwidth Throttling as per https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.5/html/Administration_Guide/sect-Network_Quality_of_Service.html .




Network quality of service is a feature that allows you to create profiles for limiting both the inbound and outbound traffic of individual virtual network interface controllers. With this feature, you can limit bandwidth in a number of layers, controlling the consumption of network resources. Network QoS settings allow you to configure bandwidth limits for both inbound and outbound traffic on three distinct levels of Average , Peak and Burst Levels




Mitigation for Balck out Times will be done via Network monitoring linux tools to estimate the network traffic and itegrating with Hooks api of RHN Satellite solution to Blackout software deliver during high network Traffic.




Linux has many tools like nload, bmon, slurm, bwm-ng, cbm, speedometer, netload or snmp query to estimate the Network Traffic or load on the Network . The values of peak / high loads on Network can be decided during the low level design . One of the tool will be deployed on the Patch management VM . This tool will monitor the network load on continuous basis via Cronjobs . Once the Network load goes beyond a defined level , script will be triggered to stop the software delivery or visa versa in case the network load comes down . This scripts has integration with patch solution ( RHN Satellite ) via hooks API.