Before Migrate What We want to do:
1. Check you system is meet Magento2.x system requirement or not.
2. Install Magento2.x (if already M2.x package is available in your machine then not required)
3. Stop Cron job in Magento2.
4. Take backup of DB – after Install Magento2.x
5. Firewall Check:
Server Level (If we are doing migration):
If you are migrate the DB on direct server level then check Mysql connection & your
firewall is allowing to connect both instance (M1.x to M2.x)
Local System (local PC):
1. In case if we move DB on our local Pc then no need to check firewall check.
2. But suggestion : Your Magento1.x DB should present with Magento2.X Mysql version
(what version we are using for M2). In case if different then there will be chances while
migrate.
Before Install Data Migration Tool:
• Before Install tool check the Migration tool version and Your magento2.x version.
• Both the migration tool and the Magento 2.x package version should be identical.
Migration tool version we can check it from composer.json file of Migration tool.
• Ex: If Magento2.x version is 2.1.0 then You Migration Tool version should be same as 2.1.0