Pre-Process and Post-Process Scripts for Google Cloud Platform

The following scripts are available to perform pre-snapshot processing or post-snapshot processing using the GCP command line tool or Compute Engine API.

Operation	Procedure	Scripts
Scripts can be used to take a snapshot of a Linux instance with the DB2 application. These scripts enable GCP to suspend I/O updates to the DB2 database until the GCP Linux guest snapshot is completed.	On a Linux virtual machine, copy the pre.sh and post.sh script files to the /etc/google/snapshots/ directory. Copy the write_suspend and write_resume scripts to a location where the DB2 database can execute them (preferably to a directory under DB2 home).	pre-freeze-script post-thaw-script write_resume.sh write_suspend.sh
Scripts can be used to take a snapshot of a VM with the MAXDB application. These scripts enable GCP to suspend I/O updates to the MAXDB database until the GCP Linux guest snapshot is completed.	On a Linux virtual machine, copy the pre.sh and post.sh script files to the /etc/google/snapshots/ directory. Copy suspend_logwriter and resume_logwriter scripts to a location where MAXDB database can execute them (preferably to a directory under MAXDB home).	pre-freeze-script post-thaw-script resume_logwriter.sh suspend_logwriter.sh
Scripts can be used to take a snapshot of a VM with the Oracle application. These scripts enable GCP to suspend I/O updates to the Oracle database until the GCP Linux guest snapshot is completed.	On a Linux virtual machine, copy the pre.sh and post.sh script files to the /etc/google/snapshots/ directory. Copy the pre-freeze-script.sql and post-thaw-script.sql scripts to a location where the Oracle database can execute them (preferably to a directory under Oracle home). These scripts change the entire database to backup mode. If the virtual machine has the Oracle iDataAgent installed on it, you can also use the consistent-archivelog-backup.rman script as a sample to run archivelog backup. This script gets a consistent snapshot, all the latest archived logs, and the current control file.	pre-freeze-script post-thaw-script pre-freeze-script.sql post-thaw-script.sql consistent-archivelog-backup.rman
Scripts can be used to take a snapshot of a VM with the Sybase application. These scripts enable GCP to suspend I/O updates to the Sybase database until the GCP Linux guest snapshot is completed.	On a Linux virtual machine, copy the pre.sh and post.sh script files to the /etc/google/snapshots/ directory. Copy pre-freeze-script.sql and post-thaw-script.sql scripts to a location where the Sybase database can execute them (preferably to a directory under Sybase home). These scripts execute Sybase quiesce commands that stop updates to the databases.	pre-freeze-script post-thaw-script pre-freeze-script.sql post-thaw-script.sql
Scripts can be used to take a snapshot of a VM with the MySQL application. These scripts enable GCP to suspend I/O updates to the MySQL database until the GCP Linux guest snapshot is completed.	On a Linux virtual machine, copy the pre.sh and post.sh script files to the /etc/google/snapshots/ directory. Copy the quiesce.py and unquiesce.py scripts to a location where the MySQL database can execute them (preferably to the /usr/sbin directory). A Python script is used to quiesce and unquiesce the databases. Python and MySQL-Python modules must be installed on the client computer.	pre-freeze-script post-thaw-script unquiesce.py quiesce.py
Scripts can be used to take a snapshot of a VM with the MongoDB application. These scripts enable VMware to suspend I/O updates to the MongoDB database until the GCP Linux guest snapshot is completed.	On a Linux virtual machine, copy the pre.sh and post.sh script files to the /etc/google/snapshots/ directory. Copy the quiesce.sh and unquiesce.sh scripts to a location where the MongoDB database can execute them (preferably to the /opt/cv_mongodb_snap directory). A shell script is used to quiesce and unquiesce the server. The cv_mongodb_properties file under /opt/cv_mongodb_snap must have the parameters mentioned if applicable. Logging information will be in the file /opt/cv_mongodb_snap/logfile. Note To disable automatic fall back of a non-quiesced snapshot, set the requireSnapshotGuestFileSystem additional setting to true. For instructions about adding an additional setting from the CommCell Console, see Adding an Additional Setting from the CommCell Console.	pre-freeze-script post-thaw-script unquiesce.sh quiesce.sh