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Update upgrade.md
Add language to specifically call out network firewall changes necessary before upgrade.
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committed by
Joao Fernandes
parent
73680bc5c4
commit
caa010323d
@@ -24,7 +24,14 @@ This can lead to misconfigurations that are difficult to troubleshoot.
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Ensure that your cluster nodes meet the minimum requirements for memory and
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disk space. In particular, manager nodes must have at least 4GB of memory.
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Learn about [UCP system requirements](system-requirements.md).
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Learn about [UCP system requirements](system-requirements.md).
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> New firewall ports
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>
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> With the introduction of Kubernetes components, additional ports may need
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> to be opened in the firewall. [Ports used](system-requirements.md/#ports-used) are documented
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> in the UCP system requirements.
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> Ports with Kubernetes scope include **179/tcp, 6443/tcp, 6444/tcp, 10250/tcp**
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## Back up your cluster
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