Page Comparison

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8. Run "update" liquibase script to apply all pending changes set and bring your database to istanbul version (Run step 4 command) 9. Run "status" liquibase script to validate that your db is now up to date for istambul (Run step 3 command)

Steps to test Liquibase Rollback

9. In case the latest updates needs to be rolled back, the below options could be used:

• liquibase.rollbackCount - reverts a specified number of changesets sequentially, starting with the most recent changes and working backward until the value specified is reached :

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    Code Block
    mvn clean compile org.liquibase:liquibase-maven-plugin:3.8.7:rollback -Dliquibase.url=jdbc:postgresql://localhost:5432/cpsdb -Dliquibase.username=cps -Dliquibase.password=cps -Dliquibase.changeLogFile=changelog/changelog-master.yaml -Dliquibase.rollbackCount=x

    
    

• liquibase.rollbackTag - reverts all changes that were made to the database after the specified tag:

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    Code Block
    mvn clean compile org.liquibase:liquibase-maven-plugin:3.8.7:rollback -Dliquibase.url=jdbc:postgresql://localhost:5432/cpsdb -Dliquibase.username=cps -Dliquibase.password=cps -Dliquibase.changeLogFile=changelog/changelog-master.yaml -Dliquibase.rollbackTag=<liquibase_tag_for_changesets_to_be_rolled_back>

    
    

• liquibase.rollbackDate - reverts all changes made to your database from today's date to the date and time you specify.

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    Code Block
    mvn clean compile org.liquibase:liquibase-maven-plugin:3.8.7:rollback -Dliquibase.url=jdbc:postgresql://localhost:5432/cpsdb -Dliquibase.username=cps -Dliquibase.password=cps -Dliquibase.changeLogFile=changelog/changelog-master.yaml -Dliquibase.rollbackDate=2020-11-26

    
    

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4. login to postgres and check the entry in table to verify checksum

psql -h localhost -p 5432 -U cps -d cpsdb

select * from yang_resource where name like '%dmi%'; //replace dmi with your names

Note about rollback

See:

* https://docs.liquibase.com/concepts/bestpractices.html in "Always think about rollback" section
* https://docs.liquibase.com/workflows/liquibase-community/using-rollback.html