Backup and Recovery

1: Back Up Eucalyptus Cloud Data

1.1: Back Up the Database

2: Recover Eucalyptus Cloud Data

2.1: Restore the Database

Backup and Recovery

This section provides details on important files to back up and recover.

1 - Back Up Eucalyptus Cloud Data

Back Up Cloud Data

This section explains what you need to back up and protect your cloud data.We recommend that you back up the following data:

The cloud database: see
Object storage. For objects in Walrus, the frequency depends on current load. Use your own discretion to determine the backup plan and strategy. You must have Walrus running.
EBS volumes in each cluster (DAS and Overlay)
The configuration file for the cloud is stored on the CLC: .
Any configuration file for the cloud stored on any other host (UFS, CC, etc.): .
The cloud security credentials on all hosts (you already backed up the CLC keys as part of the database backup). Use the tar command: .
The CC and NC configuration files, stored on every CC and NC: .
Any Euca2ools (.ini) configuration files, which reside on any Euca2ools host machine. Files can be found in:
Management Console config files in should be backed up. Typical files:
Ensure you have your instances’ so you can access the instances later.
and LVM snapshots Users are responsible for volume backups using EBS snapshots on their defined schedules.

1.1 - Back Up the Database

To back up the cloud database follow the steps listed in this topic.Bucket and object metadata are stored in the Eucalyptus cloud database. To back up the database

Log in to the CLC. The cloud database is on the CLC. Extract the Eucalyptus PostgreSQL database cluster into a script file.

pg_dumpall --oids -c -h/var/lib/eucalyptus/db/data -p8777 -U root -f/root/eucalyptus_pg_dumpall-backup.sql

Back up the cloud security credentials in the keys directory.

tar -czvf ~/eucalyptus-keydir.tgz /var/lib/eucalyptus/keys

2 - Recover Eucalyptus Cloud Data

Recover Cloud Data

This topic explains what to include when you recover your cloud.Recovering Your Cloud Data

Note

When you recover your cloud data, you need to stop all services, recover the files, then start all services again.

We recommend that you recover the following data:

The cloud database: see
Object storage. For objects in Walrus, the frequency depends on current load. Use your own discretion to determine the restore plan and strategy.
EBS volumes in each cluster (DAS and Overlay)
The configuration file for the cloud is stored on the CLC: .
Any configuration file for the cloud stored on any other host (UFS, CC, etc.): .
The cloud security credentials on all hosts (you already restored the CLC keys as part of the database restore). Use the tar command: .
The CC and NC configuration files, stored on every CC and NC: .
Any Euca2ools (.ini) configuration files, which reside on any Euca2ools host machine. Files in these directories:
Management Console config files you backed up from should be restored. Typical files:
Ensure you have your instances’ so you can access the instances.
and LVM snapshots Users are responsible for volume restore using EBS snapshots.

2.1 - Restore the Database

To restore the cloud database follow the steps listed in this topic.

Note

Sometimes you’ll get this message on both startup and shutdown of the database: … where is actually your current directory, meaning if you run the command from , then the path in the output will be instead of . The message is completely benign and can be ignored.

To restore the database

Stop the CLC service.

systemctl stop eucalyptus-cloud.service

Remove traces of the old database.

rm -rf /var/lib/eucalyptus/db

Restore the cloud security credentials in the keys directory.

tar -xvf ~/eucalyptus-keydir.tgz -C /

Re-initialize the database structure.

clcadmin-initialize-cloud

Start the database manually.

su eucalyptus -s /bin/bash -c "/usr/bin/pg_ctl start -w \
-s -D/var/lib/eucalyptus/db/data -o '-h0.0.0.0/0 -p8777 -i'"

Restore the backup.

psql -U root -d postgres -p 8777 -h /var/lib/eucalyptus/db/data -f/root/eucalyptus_pg_dumpall-backup.sql

Stop the database manually.

su eucalyptus -s /bin/bash -c "/usr/bin/pg_ctl stop -D/var/lib/eucalyptus/db/data"

Start CLC service

Note

If you are upgrading, skip this step (you don’t want to start the CLC service now because you haven’t restored the rest of the cloud data yet; starting the CLC appears in the installation steps, later).

systemctl start eucalyptus-cloud.service