apache ambari - what's new in 1.6.0
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© Hortonworks Inc. 2014
Apache Ambari1.6.0
May 2014
© Hortonworks Inc. 2014
What’s New in 1.6.0
• PostgreSQL Support• Ambari Blueprints (and /stacks API)
• For a complete list of changeshttps://issues.apache.org/jira/browse/AMBARI/fixforversion/12326544
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Database Support
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Hive Metastore Oozie Ambari DB
MySQL 5.x
Oracle 11g
PostgreSQL 8, 9
Default
New in Ambari 1.6.0
PostgreSQLMySQL Derby
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Ambari DB
• Ambari Server Setup
ambari-server setup
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Hive Metastore and Oozie DB
• Cluster Install Wizard > Customize Services• Hive and Oozie
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/stacks API
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Ambari Stacks
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AMBARISERVER
Stack
Command Scripts
Service Definitions
AMBARIAGENT/SAMBARI
AGENT/SAMBARIAGENT/S
pythonxml
Repos
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/stacks API
• REST API for reading Stacks information
• Including Services and Repositories
• Stack -> Versions -> Services -> Components
• Stack -> Versions -> Operating Systems -> Repositories
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OS Families + Repositories
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HDP 2.1
redhat5*
redhat6*
suse11* HDP-2.1
HDP-2.1
HDP-2.1
* Represents the “OS Family” (for example: “redhat6 = centos6 = oraclelinux6”)
OS REPOSITORYSTACK
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HDP.repo
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Ambari Server Ambari Agent
4) Server sends HDP.repo
2) Reads Stacks for HDP-2.1 base url*
6) Agent uses HDP.repo when instructed to install packages
1) Agent reports OS
3) Creates HDP.repo
5) Agent puts HDP.repo in place
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HDP.repo
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Ambari Server Ambari Agent
4) Server sends HDP.repo
2) Reads Stacks for HDP-2.1 base url*
6) Agent uses HDP.repo when instructed to install packages
1) Agent reports OS
3) Creates HDP.repo
5) Agent puts HDP.repo in place
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Set Base URL: During Install
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Ambari will set Base URL using input from user.
Ambari gets the default values from Stack definition (and Latest Base URL, if internet available).
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Set Base URL: During Upgrade
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ambari-server upgradestack HDP-2.1 http://your.local.repository redhat6
Stack Base URL OS Family
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Ambari Blueprints
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Ambari Blueprints
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STACKDEFINITION
COMPONENTLAYOUT BLUEPRINT
BLUEPRINT INSTANTIATE CLUSTER
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Using Blueprints
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Install, Setup and Start Ambari Server1
Install, Setup and Start Ambari Agents2
Define Blueprint (stack, layout and configurations)3
Define cluster instance4
Instantiate cluster instance and “watch” progress5
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Blueprint API Calls
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BLUEPRINTPOST /blueprints/my-blueprint
CLUSTERINSTANCE POST /clusters/MyCluster
1
2
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Example: Single-Node Definitions
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{ "configurations" : [ { ”hdfs-site" : {
"dfs.namenode.name.dir" : ”/hadoop/nn" } } ], "host_groups" : [ { "name" : ”uber-host", "components" : [ { "name" : "NAMENODE” }, { "name" : "SECONDARY_NAMENODE” }, { "name" : "DATANODE” }, { "name" : "HDFS_CLIENT” }, { "name" : "RESOURCEMANAGER” }, { "name" : "NODEMANAGER” }, { "name" : "YARN_CLIENT” }, { "name" : "HISTORYSERVER” }, { "name" : "MAPREDUCE2_CLIENT” } ], "cardinality" : "1" } ], "Blueprints" : { "blueprint_name" : "single-node-hdfs-yarn", "stack_name" : "HDP", "stack_version" : "2.1" }}
{ "blueprint" : "single-node-hdfs-yarn", "host_groups" :[ { "name" : ”uber-host", "hosts" : [ { "fqdn" : "c6401.ambari.apache.org”
} ] } ]}
BLUEPRINT
CLUSTER INSTANCE
Description• Single-node cluster• Use HDP 2.0 Stack• HDFS + YARN + MR2• Everything on c6401
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New Blueprint API Parameters
• Configurations• Password Checking
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Configurations
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{ "configurations" : [ { ”hdfs-site" : {
"dfs.namenode.name.dir" : ”/hadoop/nn" } } ], "host_groups" : [ { ... } ], "Blueprints" : { "blueprint_name" : "single-node-hdfs-yarn", "stack_name" : "HDP", "stack_version" : "2.1" }}
SET AT BLUEPRINT{ "blueprint" : "single-node-hdfs-yarn", "configurations" : [ { "hdfs-site" : { "dfs.namenode.name.dir" : "/h/d/f/s/nn" } } ], "host_groups" :[ { "name" : "host_group_1", "hosts" : [ { "fqdn" : "c6402.ambari.apache.org" } ] } ]}
OVERRIDE AT CLUSTER
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Password Checking
• Certain Stack components require passwords–Nagios – Nagios Web Password–Hive Metastore “MySQL” – Database connection password–Oozie Server “Derby” – Database connection password
• Set each individually (with blueprint or cluster)• OR set with a “default password”
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{ "blueprint" : "single-node-hdfs-yarn", ”default_password" : ”mypass", "configurations" : [ ...
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Learn More
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Resource Location
Apache Ambari Project Page http://ambari.apache.org
Ambari Project Wiki https://cwiki.apache.org/confluence/display/AMBARI
Ambari Project JIRA https://issues.apache.org/jira/browse/AMBARI
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