| = Bring Your Own Nodes to the jclouds ComputeService = |
| The bring your own node provider (byon) allows you to specify a source which jclouds will read |
| nodes from. Using this, you can have jclouds control your standalone machines, or even cloud |
| hosts that are sitting idle. |
| |
| == Constraints == |
| The byon provider only supports the following functions of ComputeService: |
| * listNodes |
| * listNodesDetailsMatching |
| * getNodeMetadata |
| * runScriptOnNodesMatching |
| |
| == How to use the byon provider == |
| The byon provider requires you supply a list of nodes using a property. Here are |
| the valid properties you can use: |
| * byon.endpoint - url to access the list, can be http://, file://, classpath:// |
| * byon.nodes - inline defined yaml in string form. |
| |
| Note: |
| |
| The identity and credential fields of the ComputeServiceContextFactory are ignored. |
| |
| === Java example === |
| |
| Properties props = new Properties(); |
| |
| // if you built the yaml string by hand |
| props.setProperty("byon.nodes", stringLiteral); |
| |
| // or you can specify an external reference |
| props.setProperty("byon.endpoint", "file://path/to/byon.yaml"); |
| |
| // or you can specify a file in your classpath |
| props.setProperty("byon.endpoint", "classpath:///byon.yaml"); |
| |
| context = new ComputeServiceContextFactory().createContext("byon", "foo", "bar", |
| ImmutableSet.<Module> of(new JschSshClientModule()), props); |
| |
| == File format == |
| You must define your nodes in yaml, and they must be in a collection called nodes. |
| |
| Here are the properties: |
| |
| * id - opaque unique id |
| * name - optional; user specified name |
| * description - optional; long description of this node |
| * note this is not yet in jclouds NodeMetadata |
| * hostname - name or ip address to contact the node on |
| * location_id - optional; correlates to a ZONE-scoped Location |
| * note that if present for one node, must be present for all |
| * os_arch - ex. x86 |
| * os_family - must conform to org.jclouds.compute.domain.OsFamily in lower-hyphen format |
| ex. rhel, ubuntu, centos, debian, amzn-linux |
| * os_description - long description of the os ex. Ubuntu with lamp stack |
| * os_version - normalized to numbers when possible. ex. for centos: 5.3, ubuntu: 10.10 |
| * login_port - optional; alternate port for ssh access |
| * group - primary group of the machine. ex. hadoop |
| * tags - optional; list of arbitrary tags. |
| * note this list is not yet in jclouds NodeMetadata |
| * username - primary login user. ex. ubuntu, toor, root |
| * sudo_password - optional; when a script is run with the "runAsRoot" option true, yet the |
| username is not root, a sudo command is invoked. If sudo_password |
| is set, the contents will be passed to sudo -S. |
| Ex. echo 'foobar'| sudo -S init 5 |
| |
| one of: |
| |
| * credential - RSA private key or password |
| * credential_url - location of plain-text RSA private key or password. |
| ex. file:///home/me/.ssh/id_rsa |
| classpath:///id_rsa |
| |
| Note that username and credentials are optional if a CredentialStoreModule is configured in |
| jclouds. |
| |
| === Example File === |
| |
| nodes: |
| - id: i-sdfkjh7 |
| name: cluster-1 |
| description: accounting analytics cluster |
| hostname: cluster-1.mydomain.com |
| location_id: virginia |
| os_arch: x86 |
| os_family: rhel |
| os_description: redhat with CDH |
| os_version: 5.3 |
| group: hadoop |
| tags: |
| - vanilla |
| username: myUser |
| credential: | |
| -----BEGIN RSA PRIVATE KEY----- |
| MIIEowIBAAKCAQEAuzaE6azgUxwESX1rCGdJ5xpdrc1XC311bOGZBCE8NA+CpFh2 |
| u01Vfv68NC4u6LFgdXSY1vQt6hiA5TNqQk0TyVfFAunbXgTekF6XqDPQUf1nq9aZ |
| lMvo4vlaLDKBkhG5HJE/pIa0iB+RMZLS0GhxsIWerEDmYdHKM25o |
| -----END RSA PRIVATE KEY----- |
| sudo_password: go panthers! |
