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https://issues.apache.org/jira/browse/AMBARI-1783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13694484#comment-13694484
]
Eric Yang commented on AMBARI-1783:
-----------------------------------
OpenJDK is not a service. It is a package instead of a service. Firewall
could be an example of isManageable service. How about simplify the cluster
blue print, software stack definition and host manifest? A cleaner version
would be:
Cluster blueprint:
{code}
{
"version": "1.3.0",
"cluster": {
"name": "example",
"services": [
{
"name": "filesystem",
"components": [ "hdfs" ],
},
{
"name": "firewall",
"components": [ "iptables" ],
"isManageable": "false"
}
],
"applications": [
{
"name": "my hadoop killer app",
"components": [ "text-analytics" ],
"isManageable": "false"
}
],
"environment": {
"fs.default.name": "hdfs://localhost:50070/",
"HADOOP_NAMENODE_OPTS": { "value": "-Xmx5G", "file": "hadoop-env.sh" }
}
}
}
{code}
Software stack example:
{code}
{
"software": {
"repository": [
{
"name": "local",
"url": "file:///image"
}
],
"platform": "x86_64",
"osType": "el6",
"components": [
{
"name":"glusterfs",
"conflicts": [ "hdfs" ],
"provides" : "filesystem",
"packages": [
{
"name":"glusterfs",
"version":"4.3",
"filename":"gluster-4.3.el6.x86_64.rpm",
"hostGroup": [ "node" ]
}
]
},
{
"name":"hdfs",
"conflicts": [ "glusterfs" ],
"provides" : "filesystem",
"packages": [
{
"name":"java",
"version":"1.7",
"filename":"java-1.7.el6.x86_64.rpm"
},
{
"name":"hadoop",
"version":"1.2.0",
"filename":"hadoop-1.2.0.el6.x86_64.rpm",
"dependency":"java"
"hostGroup": [ "namenode", "secondarynamenode", "datanode" ]
}
]
},
{
"name":"text-analytics",
"packages": [
{
"name":"hadoop",
"version":"1.2.0",
"text-analytics-1.2.0.el6.x86_64.rpm"
"dependency":"filesystem"
}
]
}
]
}
}
{code}
Host manifest:
{code}
{
"namenode": [ "nn1" ],
"secondarynamenode": [ "snn1" ],
"datanode": [ "dn1", "dn2", "dn3" ]
}
{code}
Notice in cluster blueprint, the new addition section of applications is
designed to deploy application in the hadoop environment (HDFS) or virtual
environment, there is no local copy stored in local file system. The running
environment is a flatten list of key value pairs, this is designed to make it
easier for dev ops to manage the running environment more easily. The
additional overwrite to environment allows to set a specific value for a
particular config file. Host manifest is a flatten list of hostGroups for user
friendliness for dev ops. Conflict, and provide syntax can support swappable
component for Hadoop software stack.
> Specification for a cluster blueprint consumable by Ambari
> ----------------------------------------------------------
>
> Key: AMBARI-1783
> URL: https://issues.apache.org/jira/browse/AMBARI-1783
> Project: Ambari
> Issue Type: New Feature
> Affects Versions: 1.3.1
> Reporter: Sumit Mohanty
> Assignee: Sumit Mohanty
> Fix For: 1.3.1
>
> Attachments: Ambari-BluePrint-0.3.docx, Ambari-BluePrint-0.4.docx,
> HostComponentMapping.txt, HostManifest.txt, PackageConfiguration.txt,
> PackageDefinition.txt, Sample_Deployment1_HDPStack_1_3_0_Configuration.txt,
> Sample_Deployment1_HostComponentMapping.txt,
> Sample_Deployment1_HostManifest.txt, Sample_HDPStack_1_3_0_Definition.txt,
> Schema_HostComponentMapping.txt, Schema_HostManifest.txt,
> Schema_PackageConfiguration.txt, Schema_PackageDefinition.txt
>
>
> Deployment of a hadoop cluster can be modeled as the mapping of a stack
> definition to a set of host while satisfying placement constraints. A stack
> definition refers to the description of various services that comprise a
> hadoop stack (e.g. HDP-1.2.1), components associated with the services, and
> configuration properties. A set of available hosts is specified through a
> host-manifest that lists the available hosts and relevant
> properties/characteristics of each host. A cluster blueprint is specification
> of a hadoop stack mapped to a set of hosts. Mapping to a host can be a direct
> mapping - e.g. deploy this component X on host Y or a host can be specified
> as a set of requirements which is used to select the most appropriate host(s)
> from a host-manifest.
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