Maintenance Web page for site downtimes | Maintenance not requiring planned outages
Maintain and update Load Balancer
In this chapter, we describe how to maintain and update the Load Balancer machines in WebSphere Commerce High Availability configurations. We describe actions that need to be taken in order to perform hardware upgrades, OS upgrades, product upgrades, fix installations, and log maintenance for IBM WebSphere Edge Components Load Balancer.
Application updates (new custom code and static content) typically do not affect the Load Balancer machines in our configuration, so we can look at the Load Balancer machines independently from other nodes.
Like we did for the Web servers (see Chapter 27, Maintain and update Web servers), we group the types of upgrades into types that do not require a server outage or restart, and types that do require an outage. Unlike Web servers, we cannot use multiple Load Balancers in active/active configurations (as the site is only accessible through one IP address). Rather, we have an active/passive configuration with one standby node monitoring the active node (see 7.2, Introduction to Load Balancer High Availability, and 11.3, Configure Load Balancer High Availability).
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