Deploying dummy devices¶
Warning
This chapter discusses a model of deployment which is being superceded by the pipeline model.
Dummy devices are not proper devices, but rather interactive sessions in existing machines. There are 3 types of dummy devices:
dummy-schroot
runs lava tests inside a schroot(1) session. You can configure the base chroot used, so for instance you can have different dummy devices for different OS types.dummy-ssh
runs lava tests in a remote host using a ssh(1) connection. Interacts with the file system using sshfs(1) to mount the remote host root directory locally. You can configure which host to connect to, at which port, with which username to log in (although root is more or less mandatory due to the way the rest of dispatcher works), and which identity file (i.e. private key) to use for authentication. At least hostname and identity file must be provided in the configuration file.dummy-host
runs lava tests on the actual host where the dispatcher is running. It should be unnecessary to say that having a device like this available to all users is dangerous, because submitted test code (i.e. arbitrary code) will be running on your LAVA server as root. This device should never be used without proper access restrictions.
Configuration: dummy-schroot¶
Before anything, you will want to create one or more chroots to use with
dummy-schroot
devices. The Debian wiki contains instructions to get
started with schroot. After you create your chroot(s) you will want to
take note of their names.
A dummy-schroot
device has a single configuration variable:
dummy_schroot_chroot
indicates the name of the base chroot to be used. Default value: default.
Example configuration file (e.g. schroot01.conf):
device_type = dummy-schroot
dummy_schroot_chroot = precise
Configuration: dummy-ssh¶
dummy-ssh
has 4 configuration variables:
Variable | Description | Default value |
---|---|---|
dummy_ssh_host | Hostname to connect to | None |
dummy_ssh_username | User name to login with | root |
dummy_ssh_port | Port to connect to | 22 |
dummy_ssh_identity_file | SSH private key file to connect with | None |
Note: dummy_ssh_host
and dummy_ssh_identity_file
are mandatory
configuration variables.
Example configuration file (e.g. ssh01.conf):
device_type = dummy-ssh
dummy_ssh_host = localhost
dummy_ssh_port = 8022
dummy_ssh_identity_file = /usr/share/vagrant/keys/vagrant
Configuration: dummy-host¶
This device type does not have any configuration variables, other than specifying the device_type.
Example configuration file (localhost.conf):
device_type = dummy-host