Beyond Existing Security Solution (BESS) workshop

Prerequisites

• Docker and docker-compose (or docker compose) (if you can fetch the images before the D day it's cool)
• Vault client (see the hashiCorp Vault dowload page)
• Code/Text editor of your choice
• Some classic CLI tools: jq, make and openssl

Manage your env :

cp .env.sample .env
set -a; source .env; set +a
make run

or

export PG_APP_DB='bess'
export PG_ADMIN_PWD='correcthorsestapplebattery'
export VAULT_ROOT_TOKEN='qt5%Fm2wk@Eg3zGUP9bH*2^%B#zuKP'
make run

Go service API

Test API with root URL:

curl http://localhost:8080/

Request Credentials

curl http://localhost:8080/creds

Reload bess-go (if you modify it)

docker-compose up

Interract with vault, via the vault client

It's time to test your vault CLIent now:

via Curl:

curl http://localhost:8200/v1/sys/health

or via the vault CLI tool:

export VAULT_ADDR=http://localhost:8200/
vault status

Create the admin user of this workshop

Note: you could use the vault root token to perform administration tasks, but .... Never do that !!! It's a really bad habit. Instead of this define an administrator policy that fits the exact rights you need to administrate your vault service and use the root token in the only purpose of setting this new credentials set.

Retrieve root token form logs (only available in dev mode):

docker logs vault-dev

export root token as vault client token:

export VAULT_TOKEN=e6fcd968-8858-11ed-823b-23b05637c622

let use the admin policy defined within the ./policies/bess-admin.hcl file:

Create the policy within vault (use root token)

vault policy write bess-admin-policy ./policies/bess-admin.hcl

Generate a token with this policy :

vault token create -field token -policy=bess-admin-policy

Use this credentials for administrative tasks (such as setting secret engines)

export VAULT_TOKEN=<bess-admin-token>

Setup Database usecase

Create Postgres role for vault

docker exec -i pg-database sh -c 'psql postgresql://admin:${PG_ADMIN_PWD}@localhost:5432/bess -c "CREATE ROLE \"ro\" NOINHERIT;"'

Give that role super power !

docker exec -i pg-database sh -c 'psql postgresql://admin:${PG_ADMIN_PWD}@localhost:5432/bess -c "GRANT SELECT ON ALL TABLES IN SCHEMA public TO \"ro\";"'

Configure vault database secret engine

vault secrets enable database

vault write database/config/bess-pg \
     plugin_name=postgresql-database-plugin \
     connection_url="postgresql://{{username}}:{{password}}@db/bess?sslmode=disable" \
     allowed_roles=readonly \
     username="admin" \
     password="${PG_ADMIN_PWD}"

Create a token for readonly role

tee readonly.sql <<EOF
CREATE ROLE "{{name}}" WITH LOGIN PASSWORD '{{password}}' VALID UNTIL '{{expiration}}' INHERIT;
GRANT ro TO "{{name}}";
EOF

vault write database/roles/readonly \
      db_name=bess-pg \
      creation_statements=@readonly.sql \
      default_ttl=1h \
      max_ttl=24h

vault policy write bess-go-policy ./policies/bess-go.hcl

vault token create -field token -policy=bess-go-policy

⚠️ Save the returned token, you'll need it later.

Get credential manually

Set service token

export VAULT_TOKEN=hvs.CAESIFKFrOvHMFKBd-l88_JX7RZgQXvZ0RfUkVlcxrtkB8srGh4KHGh2cy5zOERNcnM0bmhsakdzNWdlcWpPUlRNaDg

Read credentials

vault read database/creds/readonly