tpm supports two different deployment methodologies. Both configure one or more Tungsten services, in a safe and secure manner, but differ in the steps and process used to complete the installation. The two methods are:
Staging Directory
When using the staging directory method, a single configuration that defines all services and hosts within the deployment is created. tpm then communicates with all the hosts you are configuring to install and configure the different services required. This is best when you have a consistent configuration for all hosts and do not have any configuration management tools for your systems.
INIFileWhen using the
INIfile method, configuration for each service must be made individually using anINIconfiguration file on each host. This is ideal for deployments where you have a configuration management system (e.g. Puppet and Chef) to manage theINIfile. It also works very well for deployments where the configuration for each system is different from the others.
Table 9.1. TPM Deployment Methods
| Feature | Staging Directory | INI File |
|---|---|---|
| Deploy Multiple Services | Yes | Yes |
| Deploy to Multiple Hosts | Yes | No |
| Individual Host-based Configuration | Yes | Yes |
| Single-Step Upgrade | Yes | No |
| Requires SSH Configuration | Yes | No |
| RPM Support | Yes | Yes |
Note
Check the output of tpm query staging to determine
which method your current installation uses. The output for an
installation from a staging directory will start with
# Installed from
tungsten@staging-host:/opt/continuent/software/tungsten-replicator-7.0.3-141.
An installation based on an INI file may include this line but the
hostname will reference the current host and there will be an
/etc/tungsten/tungsten.ini file present.
To install a three-node service using the staging method:
Extract Tungsten Cluster on your staging server.
On each host:
Complete all the Appendix B, Prerequisites, including setting the ssh keys.
Execute the tpm configure and tpm install commands to configure and deploy the service from the staging server.
To install a three-node service using the
INI method:
On each host:
Extract Tungsten Cluster.
Complete all the Appendix B, Prerequisites.
Create the
INIfile containing your configuration.Execute the tpm install command to deploy the service.
When using the staging method, upgrades and updates to the configuration
must be made using tpm from the staging directory.
Configuration methods can be swapped from staging to
INI only by manually recreating the
INI file with the new configuration and
running tpm update.