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Using GovPaaS

There situations in the dev environment where it would be useful to see server logs, have database access, or rails console access. This should not be used in other environments.

  1. Setup
  2. Changing Space
  3. View logs
  4. Database access
  5. Rails console
  6. Other SSH access (SCP)

Setup

The following assumed you have the cloudfoundry CLI set up on your machine, and have logged in. When you log in, you should select the dev space. Instructions can be found here

Changing Space

If you need to change space, for example to move between the dev space and the staging space you can use the following commands.

To view available spaces:

cf spaces

To change to a different space:

cf target -s <space_name>

View logs

To view logs, you will first need to know the service name. cf a will list services, but the service name will probably be ecf-dev.

To view recent logs:

cf logs --recent <app_name>

To tail logs (view them as they are generated)

cf logs <app_name>

Database Access

You will need to have the psql command on your path for this to work. For a Debian/Ubuntu based system, this can be achieved with sudo apt-get install postgresql-client-12 On mac, installing through homebrew with brew install postgres is probably easiest. Alternative instructions here.

The first time you try this, you will need to install the conduit plugin:

cf install-plugin conduit

You can list the services with cf s, but the service name will generally be ecf-postgres-dev. For interactive access, use:

cf conduit ecf-postgres-dev -- psql

Rails console

First, ssh into the host instance

cf ssh <app_name>

Then,

cd /app

and finally

/usr/local/bin/bundle exec rails console

Other SSH access (SCP)

Find the instance guid

GUID=$(cf app ecf-production-worker --guid)

Generate a single use login code

cf ssh-code | [xsel|pbcoby]

Perform the SCP command

scp -P 2222 -o StrictHostKeyChecking=no -oHostKeyAlgorithms=+ssh-rsa -o User=cf:${GUID}/0 [from] [to]

using the password from cf ss-code

e.g.

scp -P 2222 -o StrictHostKeyChecking=no -oHostKeyAlgorithms=+ssh-rsa -o User=cf:${GUID}/0 ssh.london.cloud.service.gov.uk:/app/*.csv .

In cases where the is more than one instance, change the /0 to match the desired instance number