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CockroachDB Collection

The Collection groups together Ansible Module, Roles and Playbooks suited for working with all CockroachDB deployment options:

  • CockroachDB-as-a-Service (Cockroach Cloud)

    • CockroachDB dedicated
    • CockroachDB serverless

  • CockroachDB Self Hosted

Collection documentation: https://fabiog1901.github.io/cockroachdb-collection/index.html

CockroachDB-as-a-Service

Install the collection, currently hosted on GitHub

ansible-galaxy collection install git+https://github.com/fabiog1901/cockroachdb-collection.git

# install required pip packages
pip install cockroachdb-cloud-client

Head to playbooks/cc_examples.yaml for sample Playbooks and Tasks.

CockroachDB Self-Hosted

The Collection includes a Playbook for spinning up a secure, kerberized, multi-region CockroachDB cluster for demos.

A complete example on how to use this Collection is available in this blog.

Setup

Install the Collection and its requirements

ansible-galaxy collection install git+https://github.com/fabiog1901/cockroachdb-collection.git

# install required pip packages for AWS, GCP, Azure
pip install boto3 boto botocore google-api-core google-auth google-cloud-compute googleapis-common-protos azure-common azure-core azure-identity azure-mgmt-compute azure-mgmt-core azure-mgmt-network azure-mgmt-resource

Now, we copy the sample Playbook and deployment files to our working directory

File sample.yml represents the deployment definition of the desired infrastructure and platform. Make sure data in the region variable correctly represents YOUR cloud environment.

Export the AWS keys and start the SSH Agent, adding the ssh key to the agent

# export cloud provider keys
export AWS_ACCESS_KEY_ID=AKIxxxxxxxx
export AWS_SECRET_ACCESS_KEY=xxxxxxxyyyyyzzzz

export GCP_SERVICE_ACCOUNT_FILE=sa-workshop.json
export GCP_AUTH_KIND=serviceaccount
export GCP_PROJECT=my-gcp-project

export AZURE_SUBSCRIPTION_ID=xxxxxx-yyyyy-zzzzzz
export AZURE_AD_USER=xxxxyyyyzzzzz
export AZURE_PASSWORD='xxxxyyyyzzzz'

# start the ssh-agent and add the key
ssh-agent
ssh-add ~/Download/workshop.pem

You can now run the playbook

ansible-playbook site.yaml -e @sample.yaml

Kerberos Login

Below a reminder on how to login via Kerberos ticket

# port 88 must be open on the krbserver
# here, 'fabio' is a valid principal in the KDC and a valid user in the database
kinit fabio

# verify the ticket is valid
klist

# cockroach binary is also a sql client
cockroach sql --url "postgresql://fabio@<haproxy-hostname>:26257/defaultdb?sslmode=require"

# with explicit SPN
cockroach sql --url "postgresql://fabio@<haproxy-hostname>:26257/defaultdb?sslmode=require&krbsrvname=cockroach"

Certificate + Key login (root login)

sudo cockroach sql --certs-dir=/var/lib/cockroach/certs

# or using full DB URL
sudo cockroach sql --url "postgresql://root@<haproxy-hostname>:26257/defaultdb?sslmode=require&sslrootcert=/var/lib/cockroach/certs/ca.crt&sslcert=/var/lib/cockroach/certs/client.root.crt&sslkey=/var/lib/cockroach/certs/client.root.key"

Log in as app, bypassing Kerberos, assuming you have created cert+key for this user and the user is a database user.

sudo cockroach sql --url "postgresql://app@<haproxy-hostname>:26257/defaultdb?sslmode=require&sslrootcert=ca.crt&sslcert=client.app.crt&sslkey=client.app.key"