We have some questions about software update of Dynatrace Managed.
Qestion1. Typically, how long the software update takes? (How long end users cannot use dashboards)
Qestion2. Will downtime occurs even if we use multi-node Dynatrace cluster?
Our customer wants to minimize Dynatrace's downtime as much as possible.
They are planning to provide Dynatrace to their customers.
So they are considering about SLA of Dynatrace Managed.
Answer by Radoslaw S. ·
During upgrade all nodes are being shutdown for the moment of upgrading binaries - so the downtime is expected. It works like that:
1. We shutdown all nodes.
2. Upgrade one by one.
3. Once upgrade is done, we start all nodes one by one.
As mentioned it takes about 10 minutes until the first node starts, usually. All operation in normal situation can take up to 30 minutes. This strongly depends on the speed of disk, network operations and load.
Answering directly your questions - yes downtime is expected even for multi-node cluster.
FYI With version 148 we will start supporting rolling upgrades - which means zero downtime, as only one node is being upgraded at the same time. Mission Control team will control if upgrade is going to be performed in rolling fashion or full upgrade with downtime. You'll be informed on the mode with the e-mail notification before the upgrade.
Answer by Muthukumar P. ·
Even though Dynatrace mission control will do the upgrade, you have the ability to differ your upgrade window based on your needs,
In cluster console, Home -> Settings -> Automatic update -> Update starts on (drop down)
Here you can choose your window based on your requirement. Hope this helps.
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