TPA installation v23

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To use TPA, you need to install tpaexec and run the tpaexec setup command. This document explains how to install TPA packages. See Distribution support for information on what platforms are supported.

TPA packages are available to prospects (for a 60 day trial), EDB customers with a valid Extreme HA subscription, or by prior arrangement. Please contact your account manager to request access.

Info

Please make absolutely sure that your system has the correct date and time set, because various things will fail otherwise. We recommend you use a network time, for example sudo ntpdate pool.ntp.org

Quickstart

Login to EDB Repos 2.0 to obtain your token. Then execute the following command, substituting your token for <your-token>.

Add repository and install TPA on Debian or Ubuntu

curl -1sLf 'https://downloads.enterprisedb.com/<your-token>/postgres_distributed/setup.deb.sh' | sudo -E bash
sudo apt-get install tpaexec

Add repository and install TPA on RHEL, Rocky, AlmaLinux or Oracle Linux

curl -1sLf 'https://downloads.enterprisedb.com/<your-token>/postgres_distributed/setup.rpm.sh' | sudo -E bash
sudo yum install tpaexec

Install additional dependencies

sudo /opt/EDB/TPA/bin/tpaexec setup

Verify installation (run as a normal user)

/opt/EDB/TPA/bin/tpaexec selftest

More detailed explanations of each step are given below.

Where to install TPA

As long as you are using a supported platform, TPA can be installed and run from your workstation. This is fine for learning, local testing or demonstration purposes. TPA supports deploying to Docker containers should you wish to perform a complete deployment on your own workstation.

For production use, we recommend running TPA on a dedicated, persistent virtual machine. We recommend this because it ensures that the cluster directories are retained and available to your team for future cluster management or update. It also means you only have to update one copy of TPA and you only need to provide network access from a single TPA host to the target instances.

Installing TPA packages

To install TPA, you must first subscribe to an EDB repository that provides it. The preferred source for repositories is EDB Repos 2.0.

Login to EDB Repos 2.0 to obtain your token. Then execute the following command, substituting your token for <your-token>.

Add repository on Debian or Ubuntu

curl -1sLf 'https://downloads.enterprisedb.com/<your-token>/postgres_distributed/setup.deb.sh' | sudo -E bash

Add repository on RHEL, Rocky, AlmaLinux or Oracle Linux

curl -1sLf 'https://downloads.enterprisedb.com/<your-token>/postgres_distributed/setup.rpm.sh' | sudo -E bash

Alternatively, you may obtain TPA from the legacy 2ndQuadrant repository. To do so, login to the EDB Customer Support Portal and subscribe to the "products/tpa/release" repository by adding a subscription under Support/Software/Subscriptions, and following the instructions to enable the repository on your system.

Once you have enabled one of these repositories, you may install TPA as follows:

Install on Debian or Ubuntu

sudo apt-get install tpaexec

Install on RHEL, Rocky, AlmaLinux or Oracle Linux

sudo yum install tpaexec

This will install TPA into /opt/EDB/TPA. It will also ensure that other required packages (e.g., Python 3.6 or later) are installed.

We mention sudo here only to indicate which commands need root privileges. You may use any other means to run the commands as root.

Setting up the TPA Python environment

Next, run tpaexec setup to create an isolated Python environment and install the correct versions of all required modules.

Note

On Ubuntu versions prior to 20.04, please use sudo -H tpaexec setup to avoid subsequent permission errors during tpaexec configure

sudo /opt/EDB/TPA/bin/tpaexec setup

You must run this as root because it writes to /opt/EDB/TPA, but the process will not affect any system-wide Python modules you may have installed (including Ansible).

Add /opt/EDB/TPA/bin to the PATH of the user who will normally run tpaexec commands. For example, you could add this to your .bashrc or equivalent shell configuration file:

export PATH=$PATH:/opt/EDB/TPA/bin

Installing TPA without internet or network access (air-gapped)

This section describes how to install TPA onto a server which cannot access either the EDB repositories, a Python package index, or both. For information on how to use TPA in such an environment, please see Managing clusters in a disconnected or air-gapped environment

Downloading TPA packages

If you cannot access the EDB repositories directly from the server on which you need to install TPA, you can download the packages from an internet-connected machine and transfer them. There are several ways to achieve this.

If your internet-connected machine uses the same operating system as the target, we recommend using yumdownloader (RHEL-like) or apt download (Debian-like) to download the packages.

If this is not possible, please contact EDB support and we will provide you with a download link or instructions appropriate to your subscription.

Installing without access to a Python package index

When you run tpaexec setup, it will ordinarily download the Python packages from a Python package index. Unless your environment provides a different index the default is the official PyPI. If no package index is available, you should install the tpaexec-deps package in the same way your installed tpaexec. The tpaexec-deps package (available from the same repository as tpaexec) bundles everything that would have been downloaded, so that they can be installed without network access. Just install the package before you run tpaexec setup and the bundled copies will be used automatically.

Verifying your TPA installation

Once you're done with all of the above steps, run the following command to verify your local installation:

tpaexec selftest

If that command completes without any errors, your TPA installation is ready for use.

Upgrading TPA

To upgrade to a later release of TPA, you must:

  1. Install the latest tpaexec package
  2. Install the latest tpaexec-deps package (if required; see above)
  3. Run tpaexec setup again

If you have subscribed to the TPA package repository as described above, running apt-get update && apt-get upgrade or yum update should install the latest available versions of these packages. If not, you can install the packages by any means available.

We recommend that you run tpaexec setup again whenever a new version of tpaexec is installed. Some new releases may not strictly require this, but others will not work without it.

Ansible community support

TPA now supports ansible community, you may choose to use it by using --use-community-ansible option during tpaexec setup, default will be to use the legacy 2ndQuadrant/ansible fork. This will change in a future release, support for 2ndQuadrant/ansible will be dropped and community ansible will become the new default.

notable difference:

  • change the --skip-flags options to community behavior where a task will be skipped if part of the list given to the --skip-tags option even if it is also tagged with special tag always. TPA expects all tasks tagged with always to be run to ensure a complete deployment, therefor --skip-tags should not be used when using community ansible.