Network maintenance BIT-switches in BIT-2A

Network maintenance BIT-switches in BIT-2A

15-07-2021 00:00:02 - 15-07-2021 06:00:00

Urgency: Planned
Affected services:
- customer databases on PostgreSQL server psql.bit.nl
- MSSQL Instances
- MSSQL shared databases
- various BIT services, including virtual servers for customers
Expected impact:
- disruption of the network connection for approximately 30 minutes during the reboot of the switch
- short disruption during switch-overs of the MSSQL master node
- a small chance of disruption of BIT services
Customer intervention required: No
Reference number: 174392

Summary:

Software on switches used for BIT equipment in BIT-2A will be updated.

Details:

The switches will be updated by turn. As a result of the update, the switches will require a reboot. As a result, PostgreSQL server psql.bit.nl will be unavailable for 30 minutes. To minimize impact on MSSQL Instances and MSSQL shared databases a switch of master nodes will take place before the switch gets rebooted. When the switch is up and running another switch of master nodes will take place. During these switches the MSSQL Instances and shared databases will be unavailable for a short period of time.

These four switches are used for hosting various services provided by BIT. These services are virtualised and load balanced, using redundant network connections to multiple switches. In the unlikely event of problems during the upgrade of one of these switches, there is a chance of disruption of these services provided by BIT, including virtual machines for customers.
Update placed at 15/07/2021, 4:00
This maintenance was completed succesfully at 3.00h. We have monitored impacted services for another hour to ensure all services had been restored.