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swarm: call out CA rotation as potentially dangerous with MKE 

Signed-off-by: Bjorn Neergaard <bneergaard@mirantis.com>
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Bjorn Neergaard 2023-01-25 16:21:35 -07:00
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7
engine/swarm/how-swarm-mode-works/pki.md
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@ -60,6 +60,13 @@ reference for details.
## Rotating the CA certificate ## Rotating the CA certificate
> **Note**
>
> Mirantis Kubernetes Engine (MKE), formerly known as Docker UCP, provides an external
> certificate manager service for the swarm. If you run swarm on MKE, you shouldn't
> rotate the CA certificates manually. Instead, contact Mirantis support if you need
> to rotate a certificate.
In the event that a cluster CA key or a manager node is compromised, you can In the event that a cluster CA key or a manager node is compromised, you can
rotate the swarm root CA so that none of the nodes trust certificates rotate the swarm root CA so that none of the nodes trust certificates
signed by the old root CA anymore. signed by the old root CA anymore.