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- Installation
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Can’t wait to try out the PostgreSQL Operator? Let us show you the quickest possible path to getting up and running.
There are two paths to quickly get you up and running with the PostgreSQL Operator: Adobe media encoder 2020 14 0 15.
- Installation via a Marketplace
- Installation via Operator Lifecycle Manager
- Installation via Google Cloud Marketplace
Marketplaces can help you get more quickly started in your environment as they provide a mostly automated process, but there are a few steps you will need to take to ensure you can fully utilize your PostgreSQL Operator environment. You can find out more information about how to get started with one of those installers in the Installation section.
Below will guide you through the steps for installing and using the PostgreSQL Operator using an installer that works with Ansible.
Installation
Install the PostgreSQL Operator
On environments that have a default storage class set up (which is most modern Kubernetes environments), the below command should work:
This will launch the
pgo-deployer
container that will run the various setup and installation jobs. This can take a few minutes to complete depending on your Kubernetes cluster.If your install is unsuccessful, you may need to modify your configuration. Please read the “Troubleshooting” section. You can still get up and running fairly quickly with just a little bit of configuration.
Install the pgo
Client
During or after the installation of the PostgreSQL Operator, download the
pgo
client set up script. This will help set up your local environment for using the PostgreSQL Operator:When the PostgreSQL Operator is done installing, run the client setup script:
This will download the
pgo
client and provide instructions for how to easily use it in your environment. It will prompt you to add some environmental variables for you to set up in your session, which you can do with the following commands:If you wish to permanently add these variables to your environment, you can run the following:
NOTE: For macOS users, you must use
~/.bash_profile
instead of ~/.bashrc
Post-Installation Setup
Below are a few steps to check if the PostgreSQL Operator is up and running.
By default, the PostgreSQL Operator installs into a namespace called
pgo
. First, see that the Kubernetes Deployment of the Operator exists and is healthy:If successful, you should see output similar to this:
Sql editor 3 6 2010. Next, see if the Pods that run the PostgreSQL Operator are up and running:
If successful, you should see output similar to this:
Finally, let’s see if we can connect to the PostgreSQL Operator from the
pgo
command-line client. The Ansible installer installs the pgo
command line client into your environment, along with the username/password file that allows you to access the PostgreSQL Operator. In order to communicate with the PostgreSQL Operator API server, you will first need to set up a port forward to your local environment.In a new console window, run the following command to set up a port forward:
Back to your original console window, you can verify that you can connect to the PostgreSQL Operator using the following command:
If successful, you should see output similar to this:
Create a PostgreSQL Cluster
The quickstart installation method creates a namespace called
pgo
where the PostgreSQL Operator manages PostgreSQL clusters. Try creating a PostgreSQL cluster called hippo
:Alternatively, because we set the
PGO_NAMESPACE
environmental variable in our .bashrc
file, we could omit the -n
flag from the pgo create cluster
command and just run this:Even with
PGO_NAMESPACE
set, you can always overwrite which namespace to use by setting the -n
flag for the specific command. For explicitness, we will continue to use the -n
flag in the remaining examples of this quickstart.If your cluster creation command executed successfully, you should see output similar to this:
This will create a PostgreSQL cluster named
hippo
. It may take a few moments for the cluster to be provisioned. You can see the status of this cluster using the pgo test
command:When everything is up and running, you should see output similar to this:
The
pgo test
command provides you the basic information you need to connect to your PostgreSQL cluster from within your Kubernetes environment. For more detailed information, you can use pgo show cluster -n pgo hippo
.Connect to a PostgreSQL Cluster
By default, the PostgreSQL Operator creates a database inside the cluster with the same name of the cluster, in this case,
hippo
. Below demonstrates how we can connect to hippo
.How Users Work
You can get information about the users in your cluster with the
pgo show user
command:This will give you all the unprivileged, non-system PostgreSQL users for the
hippo
PostgreSQL cluster, for example:To get the information about all PostgreSQL users that the PostgreSQL Operator is managing, you will need to use the
--show-system-accounts
flag:which returns something similar to:
The
postgres
user represents the database superuser and has every privilege granted to it. The PostgreSQL Operator securely interfaces through the postgres
account to perform certain actions, such as managing users.The
primaryuser
is the used for replication and high availability. You should never need to interface with this user account.Connecting via psql
Let’s see how we can connect to
hippo
using psql
, the command-line tool for accessing PostgreSQL. Ensure you have installed the psql
client.The PostgreSQL Operator creates a service with the same name as the cluster. See for yourself! Get a list of all of the Services available in the
pgo
namespace:Let’s connect the
hippo
cluster. First, in a different console window, set up a port forward to the hippo
service:You can connect to the database with the following command, substituting
datalake
for your actual password:Postico 1 3 – A Modern Postgresql Client Documentation Example
You should then be greeted with the PostgreSQL prompt:
Connecting via pgAdmin 4
pgAdmin 4 is a graphical tool that can be used to manage and query a PostgreSQL database from a web browser. The PostgreSQL Operator provides a convenient integration with pgAdmin 4 for managing how users can log into the database.
To add pgAdmin 4 to
hippo
, you can execute the following command:Postico 1 3 – A Modern Postgresql Client Documentation Pdf
It will take a few moments to create the pgAdmin 4 instance. The PostgreSQL Operator also creates a pgAdmin 4 service. See for yourself! Get a list of all of the Services available in the
pgo
namespace:Let’s connect to our
hippo
cluster via pgAdmin 4! In a different terminal, set up a port forward to pgAdmin 4:Navigate your browser to http://localhost:5050 and use your database username (
testuser
) and password (e.g. datalake
) to log in. Though the prompt says “email address”, using your PostgreSQL username will work:(There are occasions where the initial credentials do not properly get set in pgAdmin 4. If you have trouble logging in, try running the command
pgo update user -n pgo hippo --username=testuser --password=datalake
).Once logged into pgAdmin 4, you will be automatically connected to your database. Explore pgAdmin 4 and run some queries!
For more information, please see the section on pgAdmin 4.
Troubleshooting
Installation Failures
Some Kubernetes environments may require you to customize the configuration for the PostgreSQL Operator installer. The below provides a guide on the common parameters that require modification, though this may vary based on your installation. For a full reference, please visit the Installation section.
If you already attempted to install the PostgreSQL Operator and that failed, the easiest way to clean up that installation is to delete the Namespace that you attempted to install the PostgreSQL Operator into. Note: This deletes all of the other objects in the Namespace, so please be sure this is OK!
To delete the namespace, you can run the following command:
Get the PostgreSQL Operator Installer Manifest
You will need to download the PostgreSQL Operator Installer manifest to your environment, which you can do with the following command:
Configure the PostgreSQL Operator Installer
There are many configuration parameters to help you fine tune your installation, but there are a few that you may want to change to get the PostgreSQL Operator to run in your environment. Open up the
postgres-operator.yml
file and edit a few variables.Find the
pgo_admin_password
variable. This is the password you will use with the pgo
client to manage your PostgreSQL clusters. The default is password
, but you can change it to something like hippo-elephant
.You may also need to set the storage default storage classes that you would like the PostgreSQL Operator to use. These variables are called
primary_storage
, replica_storage
, backup_storage
, and backrest_storage
. There are several storage configurations listed out in the configuration file under the heading storage[1-9]_name
. Find the one that you want to use, and set it to that value.For example, if your Kubernetes environment is using NFS storage, you would set these variables to the following:
If you are using either Openshift or CodeReady Containers and you have a
restricted
Security Context Constraint, you will need to set disable_fsgroup
to true
in order to deploy the PostgreSQL Operator.For a full list of available storage types that can be used with this installation method, please review the configuration parameters.
Postico 1 3 – A Modern Postgresql Client Documentation Download
When you are done editing the file, you can install the PostgreSQL Operator by running the following commands: