Blueprints – apache ambari – apache software foundation

• configurations : A list of configuration maps keyed by configuration type. Data recovery tools mac An example of a configuration type is “core-site”. Z wave database When specified at the top level, configurations are applied at cluster scope and override default values for the cluster. Database orm When specified within a “host_groups” element, configurations are applied at the host level for all hosts mapped to the host group. Database workbench Host scoped configurations override cluster scoped configuration for all hosts mapped to the host group.


Database best practices The configurations element is optional at both levels.

• host_groups : A list of host groups which define topology (components) and configuration for all hosts which are mapped to the host group. Database schema At least one host group must be specified.

• name : The name of the host group. Data recovery external hard drive Mandatory field which is referred to in the cluster creation body when mapping physical hosts to host groups.

• components : A list of components which will run on all hosts that are mapped to the host group. Database 1 to many At least one component must be specified for each host group.

• provision_action : Cluster wide provision action can be specified in Cluster Creation Template (see below), but optionally this can be overwritten on component level, by specifying a different provision_action here. Data recovery galaxy s6 The default provision_action is INSTALL_AND_START.

• cardinality : This field is optional and intended to provide a hint to the deployer as to how many instances of a particular host_group can be instantiated; it has no bearing on how the cluster is deployed. Os x data recovery software When a blueprint is exported for an existing cluster, this field will indicate the number of hosts that correspond the the host group in that cluster.

• stack_version : The version of the stack. Database technology For example: “1.3.2” or “2.1”. Database queries definition This is a required field. Data recovery mac free When deploying a cluster using a blueprint, the stack definition identified in the blueprint must be available to the Ambari instance in the new cluster.

• blueprint_name : Optional field which specifies that name of the blueprint. Data recovery phone Typically the name of the blueprint is specified in the URL of the REST invocation. Database normalization The only reason to specify the name in the blueprint is when creating multiple blueprints via a single REST invocation. Data recovery quote Be aware that the name specified in this field will override the name specified in the URL.

• security : Optional block to specify security settings for blueprint. Database key types Supported security types are NONE and KERBEROS. Database instance In case of KERBEROS, users have the option to embed a valid kerberos descriptor – to override default values defined for HDP stack – in field kerberos_descriptor or as an alternative they may reference a previously saved kerberos descriptor using kerberos_descriptor_reference field.

In case of selecting KERBEROS as security_type it’s mandatory to add kerberos-env and krb5-conf config types. Data recovery raid 0 (Checkout configurations section in Blueprint example with KERBEROS on this page)

Be aware that, Kerberos client packages needs to be installed on the host running Ambari server and krb5.conf needs to be configured properly to contain your realm (admin_server and kdc).

• default_password : Optional field which specifies a default password for all required passwords which are not specified in the blueprint or cluster creation template configurations.

• provision_action : Default provision_action is INSTALL_AND_START, optionally this can be overwritten on component level, by specifying a different provision_action for a given component.

• configurations : A list of configuration maps keyed by configuration type. Data recovery tools An example of a configuration type is “core-site”. Database programming languages When specified at the top level, configurations are applied at cluster scope and override default values for the cluster. Super 8 database When specified within a “host_groups” element, configurations are applied at the host level for all hosts mapped to the host group. 5 databases Host scoped configurations override cluster scoped configuration for all hosts mapped to the host group. H data recovery registration code All cluster scoped and host group scoped configurations specified here override configurations specified in the corresponding blueprint. Database link The configurations element is optional at both levels.

• config_recommendation_strategy : Optional field which specifies the strategy of applying configuration recommendations to a cluster. Database google Recommended configurations gathered by the response of the stack advisor, they may override partly/totally user defined custom configurations depending on selected strategy. Database update A property value is considered as custom configuration in case it has a value other then stack default. Data recovery news Available from Ambari 2.2.0.

• ALWAYS_APPLY : All c onfiguration recommendations are applied, they may override custom configurations provided by the user in the Blueprint and/or Cluster Creation Template.

• ALWAYS_APPLY_DONT_OVERRIDE_CUSTOM_VALUES : All c onfiguration recommendations are applied, however custom configurations defined by the user in the Blueprint and/or Cluster Creation Template are not overridden by recommended configuration values. Data recovery austin Available as of Ambari 2.4.0.

• host_count : The number of hosts that should be mapped to this host group. Data recovery micro sd card This can be specified instead of concrete host names. Database relationship diagram If no host_predicate is specified, any host that isn’t explicitly mapped to another host group is available to be mapped to this host group. Data recovery services near me Available as of Ambari 2.1.0.

• host_predicate : Optional field which is used together with host_count to control which hosts are mapped to the host group. Database worksheet This is useful in supporting host ‘flavors’ where different host groups require different host types. Database constraints The default predicate matches all hosts which aren’t explicitly mapped to another host group. Database vault The syntax of the predicate is the standard Ambari API query syntax applied against the “api/v1/hosts” endpoint. Qmobile data recovery software Available as of Ambari 2.1.0.

• credentials : Optional block to create credentials, kdc.admin.credential is required in case of setting up KERBEROS security. Tally erp 9 data recovery software Store type could be PERSISTENT or TEMPORARY. 7 databases in 7 weeks Temporary admin credentials are valid 90 minutes or until server restart.

• security : Optional block to override security settings defined in Blueprint. 3 database models Supported security types are NONE and KERBEROS. Database programmer salary In case of KERBEROS, users have the option to embed a valid kerberos descriptor – to override default values defined for HDP stack – in field kerberos_descriptor or as an alternative they may reference a previously saved kerberos descriptor using kerberos_descriptor_reference field. Database developer salary Security settings defined here will override Blueprint settings, however overriding security type used in Blueprint to a less secure mode is not possible (ex. Data recovery agent set security.type=NONE in cluster template having security.type=KERBEROS in Blueprint). Data recovery usb flash drive In case of selecting KERBEROS as security_type it’s mandatory to add kerberos-env and krb5-conf config types. Data recovery windows (Checkout configurations section in Blueprint example with KERBEROS on this page)

• Stack Defaults: Each Stack provides configurations for all included services which serve as defaults for all clusters deployed via Blueprints.

• Blueprint Cluster Scoped: Configurations provided at the top level of a Blueprint override the corresponding default values for the entire cluster.

• Blueprint Host Group Scoped: Configurations provided within a host_group element of a Blueprint override both the corresponding default values and blueprint cluster scoped values only for hosts mapped to the host group.

• Cluster Creation Template Cluster Scoped: Configurations provided at the top level of the Cluster Creation Template override both the corresponding default and blueprint cluster scoped values for the entire cluster.

• Cluster Creation Template Host Group Scoped: Configurations provided within a host_group element of a Cluster Creation Template override all other values for hosts mapped to the host group.

• For required password properties, they may be explicitly set in either the Blueprint or Cluster Creation Template configurations or a default password may be specified in the Cluster Creation Template which will be applied to all passwords which have not been explicitly set

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