Upgrading Arcadia Enterprise Using Ambari Stacks

You can upgrade Arcadia Enterprise service on Ambari to a newer version.

Developer Note. We do not test or certify rolling upgrades of clusters or operating systems; they may or may not work.

To upgrade an existing Arcadia Enterprise service to a newer version, perform these tasks:

Stopping Arcadia Service
Back-up Application Metadata
Removing Arcadia Service from Ambari
Updating Arcadia File Sources
Adding Arcadia Service to Ambari

Here, note the place holders:

user_name is the account of the user with administrative privileges (and root access) and password is its password
ambari_hostname is the name of the Ambari Stacks host and port is the port used, typically 8080
cluster_name is the name of the cluster
hdp_version is the version of the HDP, such as 2.3, 2.4, 2.6, and so on
release_tarball_id is the suffix of the tar file name, such as 4.0.0.0_1491274848-1

Stopping Arcadia Service

Follow these steps to stop Arcadia Enterprise service.

Log into the Ambari web UI.
Select Arcadia Enterprise from the left navigation bar.
Click Service Actions on top right, to open a dropdown menu.
Click Stop.

Back-up Application Metadata

Back-up application metadata, which is located on the node that runs the Arcadia visualization server.

For SQLite metadata, make a backup copy of the following file:

/var/lib/arcadia/arcviz.sqlite3

To backup application metadata for all other connections (Oracle, MySQL, and Postgress), please contact your database administrator.

Removing Arcadia Service from Ambari

Follow these steps to remove Arcadia service from Ambari Stacks, without removing the installed rpm.

Please note that this only removes Arcadia service from Ambari. All other Arcadia Enterprise data, logs, and external metadata still exists on the cluster.

Use the following command syntax to remove Arcadia service from Ambari Stacks.

$ curl -u username:password
       -i -H 'X-Requested-By: ambari' 
       -X DELETE  http://ambari_hostname:port/api/v1/clusters/cluster_name/services/ARCADIAENTERPRISE

You should see a system response that looks somewhat like this:

HTTP/1.1 200 OK
X-Frame-Options: DENY
X-XSS-Protection: 1; mode=block
User: admin
Set-Cookie: AMBARISESSIONID=3adp7jpq26cu1rajlic2qbxv;Path=/;HttpOnly
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Type: text/plain
Content-Length: 0
Server: Jetty(8.1.17.v20150415)

Updating Arcadia File Sources

Update the Arcadia file sources to the new version; this involves removing the old folder and copying the new folder to its location.

Run the following commands at the root:

Remove the folder that contains the older Arcadia source files from the /services directory.

$ sudo rm -rf /var/lib/ambari-server/resources/stacks/HDP/hdp_version/services/ARCADIA-ENTERPRISE

Extract the zipped tar of new Arcadia files.

$ tar -xvzf ARCADIA-ENTERPRISE-release_tarball_id.tar.gz

Copy the extracted contents into the /services directory.

$ sudo cp -R ARCADIA-ENTERPRISE /var/lib/ambari-server/resources/stacks/HDP/hdp_version/services/

Re-start the Ambari server.
```
$ sudo service ambari-server restart
```

Adding Arcadia Service to Ambari

After completing the previous tasks, add Arcadia Enterprise service through the Ambari Stacks UI, as described in Add Arcadia Enterprise to Ambari Services.