Steps to upgrade SQL 2014 to SQL 2017 in AG Env

Hi All,

We have plan to upgrade SQL from 2014 to 2017 on production environment (in-place upgrade). We have configured SQL Always on two node windows cluster environment. Can you please review below steps and let me know if i missed any steps.

SQL AG properties:

SQL-DB-01 : Primary

Availability mode: Synchronous commit

Fail-over mode: Automatic

Readable secondary: Yes

Session Timeout=10

SQL-DB-02 : Secondary

Availability mode: Synchronous commit

Fail-over mode: Automatic

Readable secondary: Yes

Session Timeout=10

step 1: Connect to SQL-DB-02: Update SQL version from 2014 to 2017

step 2: Reboot SQL-DB-02 machine

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step 3: Connect SQL-DB-01: Fail-over SQL AG from SQL-DB-01 to SQL-DB-02 

step 4: Update SQL version from 2014 to 2017 on SQL-DB-01

step 5: Reboot SQL-DB-01 machine

==========================

step 6: Connect SQL-DB-01: Fail-over SQL AG from SQL-DB-02 to SQL-DB-01