Installing PostgreSQL Operator

Installing

The following assumes the proper prerequisites are satisfied we can now install the PostgreSQL Operator.

The commands should be run in the directory where the Crunchy PostgreSQL Operator playbooks are stored. See the installers/ansible directory in the Crunchy PostgreSQL Operator project for the inventory file, values file, main playbook and ansible roles.

Installing on Linux

On a Linux host with Ansible installed we can run the following command to install the PostgreSQL Operator:

ansible-playbook -i /path/to/inventory.yaml --tags=install --ask-become-pass main.yml

Installing on macOS

On a macOS host with Ansible installed we can run the following command to install the PostgreSQL Operator.

ansible-playbook -i /path/to/inventory.yaml --tags=install --ask-become-pass main.yml

Installing on Windows Ubuntu Subsystem

On a Windows host with an Ubuntu subsystem we can run the following commands to install the PostgreSQL Operator.

ansible-playbook -i /path/to/inventory.yaml --tags=install --ask-become-pass main.yml

Verifying the Installation

This may take a few minutes to deploy. To check the status of the deployment run the following:

# Kubernetes
kubectl get deployments -n <NAMESPACE_NAME>
kubectl get pods -n <NAMESPACE_NAME>

# OpenShift
oc get deployments -n <NAMESPACE_NAME>
oc get pods -n <NAMESPACE_NAME>

Install the pgo Client

During or after the installation of PGO: the Postgres Operator, download the pgo client set up script. This will help set up your local environment for using the Postgres Operator:

curl https://raw.githubusercontent.com/CrunchyData/postgres-operator/v4.7.3/installers/kubectl/client-setup.sh > client-setup.sh
chmod +x client-setup.sh

When the Postgres Operator is done installing, run the client setup script:

./client-setup.sh

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:

export PGOUSER="${HOME?}/.pgo/pgo/pgouser"
export PGO_CA_CERT="${HOME?}/.pgo/pgo/client.crt"
export PGO_CLIENT_CERT="${HOME?}/.pgo/pgo/client.crt"
export PGO_CLIENT_KEY="${HOME?}/.pgo/pgo/client.key"
export PGO_APISERVER_URL='https://127.0.0.1:8443'
export PGO_NAMESPACE=pgo

If you wish to permanently add these variables to your environment, you can run the following:

cat <<EOF >> ~/.bashrc
export PGOUSER="${HOME?}/.pgo/pgo/pgouser"
export PGO_CA_CERT="${HOME?}/.pgo/pgo/client.crt"
export PGO_CLIENT_CERT="${HOME?}/.pgo/pgo/client.crt"
export PGO_CLIENT_KEY="${HOME?}/.pgo/pgo/client.key"
export PGO_APISERVER_URL='https://127.0.0.1:8443'
export PGO_NAMESPACE=pgo
EOF

source ~/.bashrc

NOTE: For macOS users, you must use ~/.bash_profile instead of ~/.bashrc

Verify pgo Connection

In a separate terminal we need to setup a port forward to the Crunchy PostgreSQL Operator to ensure connection can be made outside of the cluster:

# If deployed to Kubernetes
kubectl port-forward -n pgo svc/postgres-operator 8443:8443

# If deployed to OpenShift
oc port-forward -n pgo svc/postgres-operator 8443:8443

You can subsitute pgo in the above examples with the namespace that you deployed the PostgreSQL Operator into.

On a separate terminal verify the PostgreSQL client can communicate with the Crunchy PostgreSQL Operator:

pgo version

If the above command outputs versions of both the client and API server, the Crunchy PostgreSQL Operator has been installed successfully.