Elastic cluster upgrading order for nodes

[testsemd_email]

I have elastic 5 nodes cluster,
node1-master only
node2-master only
node3-data_ingest
node4-data+ingest
node5-master+data+ingest

Can upgrade node1 before upgrade node5?
Thank you!

[KevSex (Kev)]

As per Rolling upgrades, you should be upgrading nodes that are not master-eligible first then move on to Master-eligible nodes.

So in your case, it should be in the order of 3,4,5,1,2

[testsemd_email]

Thank you!