This Control Panel Migration Guide describes the migration procedure both for clouds with Static Hypervisors and for clouds with CloudBoot Hypervisors.
Install onapp packages on the new CP server. Package versions of both CPs must be the same.
Stop OnApp and httpd daemons on the old CP:
Ensure OnApp and httpd daemons are stopped
Make dump of OnApp database; /etc/ folder; .ssh/ folder (for root and OnApp users); /onapp/interface/ :
Versions 3.3.0 and later require backing up of Redis database.
Disable OnApp and httpd daemons in autorun:
Ensure those daemons were really disabled:
Copy all dumped data to new CP server (create /root/BACKUP_DIR on remote host):
Drop the new database on the new Control Panel server:
Apply database from the old CP to the new one:
Apply Redis database if CP's version is 3.3.0 or later
Make sure the Redis database file is the
/var/lib/redis/onapp.rdbfile as it is assumed that the
dir var/lib/redisdirectives are set in
Apply SSH files for root and onapp users:
Check owner of ssh keys in /onapp/interface/config/keys (in layout owner and group must be onapp):
Apply exports file to new CP:
Perform the following steps 16-20 only if your Cloud uses CloudBootHypervisors. For the cloud with StaticHypervisors - proceed to step 21
Copy TFTPBoot folder from the old CP to the new one:
Copy /onapp/configuration/dhcp/dhcpd.conf from the old CP to the new one:
For OnApp versions previous to 4.0 file location is /home/onapp/dhcpd.conf
Stop dhcpd daemon on the old CP and disable it in the autorun:
Apply copied dhcp files and TFTPBoot folder to the new CP:
For OnApp versions previous to 4.0 apply the following:
Check server_args directive in TFTP configuration. It should be server_args = -v -v -s /tftpboot:
- Make interchage of IP-addresses between old and new CP servers
- On the new CP - try to obtain access to HVs via SSH under OnApp user
Add onapp and httpd daemons on CP to autorun:
Run the following command to apply SNMP Trap IP_address of management network and RabbitMQ the new CP:
Perform this step if you are running OnApp 3.3.0 and above.
For successful migration you need to specify the RabbitMQ credentials. You can view your RabbitMQ credentials by running the following command:
/onapp/onapp-rabbitmq/credentials.ymlfrom the RabbitMQ server standalone box, into Control Panel's
/onapp/configuration/rabbit_mq/vcloud/credentials.yml. For more information, refer to RabbitMQ Server Installation.
- --rbtlogin RBT_LOGIN - RabbitMQ manager login. The default value is 'rbtmgr'.
- --rbtpasswd RBT_PASSWD - RabbitMQ manager password. A random password is generated if this parameter isn't specified.
Make sure that the rbtlogin and rbtpasswd values are the same as at the Settings > Configuration page.
Go to Settings > Configuration in the OnApp UI and click Save to complete the process.
If Acceleration is enabled:
Specify user name and password for rabbitmq-server:
Set permissions for this user:
Restart OnApp service:
Compute Resources and Control Panel must use the same rabbitmq-server.
Make sure RabbitMQ credentials are up to date for all HVs. To do this, perform the steps, marked as "Perform the following steps if you plan to deploy Accelerator. Otherwise skip." described in the Install Compute Resources section.
Run DB dump to be sure that all DB dumps are copied directly to the backup server:
After interchanging IP addresses between the CP servers, remount NFS volumes coming from the Control Panel on CloudBoot compute resources.