github.com/kardianos/nomad@v0.1.3-0.20151022182107-b13df73ee850/website/source/docs/drivers/rkt.html.md (about) 1 --- 2 layout: "docs" 3 page_title: "Drivers: Rkt" 4 sidebar_current: "docs-drivers-rkt" 5 description: |- 6 The Rkt task driver is used to run application containers using Rkt. 7 --- 8 9 # Rkt Driver 10 11 Name: `rkt` 12 13 The `Rkt` driver provides an interface for using CoreOS Rkt for running 14 application containers. Currently, the driver supports launching 15 containers. 16 17 ## Task Configuration 18 19 The `Rkt` driver supports the following configuration in the job spec: 20 21 * `trust_prefix` - **(Optional)** The trust prefix to be passed to rkt. Must be reachable from 22 the box running the nomad agent. If not specified, the image is run without 23 verifying the image signature. 24 * `image` - **(Required)** The image to run which may be specified by name, 25 hash, ACI address or docker registry. 26 * `command` - **(Optional**) A command to execute on the ACI. 27 * `args` - **(Optional**) A string of args to pass into the image. 28 29 ## Task Directories 30 31 The `Rkt` driver does not currently support mounting the `alloc/` and `local/` 32 directory. It is currently blocked by this [Rkt 33 issue](https://github.com/coreos/rkt/issues/761). As such the coresponding 34 [environment variables](/docs/jobspec/environment.html#task_dir) are not set. 35 36 ## Client Requirements 37 38 The `Rkt` driver requires rkt to be installed and in your systems `$PATH`. 39 The `trust_prefix` must be accessible by the node running Nomad. This can be an 40 internal source, private to your cluster, but it must be reachable by the client 41 over HTTP. 42 43 ## Client Attributes 44 45 The `Rkt` driver will set the following client attributes: 46 47 * `driver.rkt` - Set to `1` if Rkt is found on the host node. Nomad determines 48 this by executing `rkt version` on the host and parsing the output 49 * `driver.rkt.version` - Version of `rkt` eg: `0.8.1` 50 * `driver.rkt.appc.version` - Version of `appc` that `rkt` is using eg: `0.8.1` 51 52 ## Resource Isolation 53 54 This driver does not support any resource isolation as of now.