[/map
{"- map/map "})
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{"- map/topicref "}) [/map/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Deploying a Cluster of Oracle Endeca Servers (navtitle][/map/topicref/topicmeta/linktext
{"- map/linktext "}) Deploying a Cluster of Oracle Endeca Servers (linktext][/map/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This section discusses how to deploy a cluster with multiple Oracle Endeca Servers. (shortdesc] (topicmeta][/map/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Cluster overview (navtitle][/map/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Cluster overview (linktext][/map/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This topic introduces the cluster of Oracle Endeca Server nodes and describes its capabilities. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Oracle Endeca Server cluster architecture (navtitle][/map/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Oracle Endeca Server cluster architecture (linktext][/map/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This topic discusses cluster architecture in the development and production environments. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Important cluster concepts (navtitle][/map/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Important cluster concepts (linktext][/map/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This topic introduces the leader and follower nodes and the Cluster Coordinator. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Before you begin (navtitle][/map/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Before you begin (linktext][/map/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This section discusses requirements for installation related to deploying a cluster, as well as tips for planning your cluster architecture. (shortdesc] (topicmeta][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) System and hardware requirements (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) System and hardware requirements (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This section outlines the operating system and hardware requirements for deploying Oracle Endeca Servers in a clustered environment. (shortdesc] (topicmeta][/map/topicref/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Operating system requirements (navtitle][/map/topicref/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Operating system requirements (linktext][/map/topicref/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) A cluster of nodes can be deployed on either Windows or Linux. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Shared file system requirements (navtitle][/map/topicref/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Shared file system requirements (linktext][/map/topicref/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This topic describes the requirements for the shared file system in a cluster. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Load balancer requirements (navtitle][/map/topicref/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Load balancer requirements (linktext][/map/topicref/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) In most production deployments, it is desirable to configure a load balancer in front of the cluster. This topic discusses the considerations for this load balancer. (shortdesc] (topicmeta] (topicref] (topicref][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) About the Cluster Coordinator (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) About the Cluster Coordinator (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) The cluster coordinator provides a mechanism for the nodes (represented by the Dgraph processes running on each of the servers) to communicate with each other while ensuring increased availability of the Oracle Endeca Server. (shortdesc] (topicmeta][/map/topicref/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Starting and stopping the Cluster Coordinator service (navtitle][/map/topicref/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Starting and stopping the Cluster Coordinator service (linktext][/map/topicref/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) To ensure that nodes can function together in a cluster, the Cluster Coordinator service must be running on the leader node and all the nodes must be started with references to the host name and port of the Cluster Coordinator service. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Configuration file for the Cluster Coordinator (navtitle][/map/topicref/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Configuration file for the Cluster Coordinator (linktext][/map/topicref/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) The Cluster Coordinator service uses a configuration file to specify its settings. (shortdesc] (topicmeta] (topicref] (topicref][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Planning cluster nodes (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Planning cluster nodes (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) To plan cluster nodes, you specify which ones will serve as follower nodes. The one node in a cluster that is not a follower is the leader node. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Cluster behavior (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Cluster behavior (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) The Cluster Coordinator ensures that the nodes (represented by the Dgraph processes) in the cluster provide query processing that is stable in the face of individual follower node failures. This topic discusses cluster behavior in various scenarios, such as cluster startup, updates to the data files, and response to a node failure. (shortdesc] (topicmeta] (topicref] (topicref][/map/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Building a cluster (navtitle][/map/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Building a cluster (linktext][/map/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This section discusses how to build a cluster by starting the leader node and adding follower nodes. (shortdesc] (topicmeta][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Starting the Dgraph process as the leader node (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Starting the Dgraph process as the leader node (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) When you start the data store without specifying a follower node flag for the Dgraph process, this node serves as the leader node. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Adding a follower node (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Adding a follower node (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) You can add a follower node to the cluster after the leader node has been started, by specifying the --follower flag for the follower Dgraph process. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Summary of operations handled by the leader node and any node (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Summary of operations handled by the leader node and any node (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This topic summarizes which specific requests to the Oracle Endeca Server should be directed to the leader node and which can be handled by any node. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Connecting the leader node with Integrator (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Connecting the leader node with Integrator (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) The connectors in Integrator that send data to the Oracle Endeca Server must be configured to reference the host name and port of the leader node. (shortdesc] (topicmeta] (topicref] (topicref][/map/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Maintaining a cluster (navtitle][/map/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Maintaining a cluster (linktext][/map/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This section contains tasks you need to perform for cluster maintenance. (shortdesc] (topicmeta][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Removing a follower node (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Removing a follower node (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) To remove a follower node, stop the data store and its associated Dgraph process on this server with the endeca-cmd stop-ds <datastore> command. This command gracefully shuts down a running Dgraph process. (shortdesc] (topicmeta] (topicref][/map/topicref/topicref/topicref
{"- map/topicref "}) [/map/topicref/topicref/topicref/topicmeta
{"- map/topicmeta "}) [/map/topicref/topicref/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Changing the name of the leader node (navtitle][/map/topicref/topicref/topicref/topicmeta/linktext
{"- map/linktext "}) Changing the name of the leader node (linktext][/map/topicref/topicref/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) To change the leader node, stop the existing cluster by stopping all Dgraph processes on each of the servers, start the Cluster Coordinator on another node, and recreate the cluster with the new leader node. (shortdesc] (topicmeta] (topicref] (topicref] (topicref]
[/map/reltable
{"- map/reltable "})
[/map/reltable/relheader
{"- map/relheader "}) [/map/reltable/relheader/relcolspec
{"- map/relcolspec "}) (relcolspec]
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{"- map/relcolspec "}) (relcolspec]
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{"- map/relrow "}) [/map/reltable/relrow/relcell
{"- map/relcell "})
[/map/reltable/relrow/relcell/topicref
{"- map/topicref "}) [/map/reltable/relrow/relcell/topicref/topicmeta
{"- map/topicmeta "}) [/map/reltable/relrow/relcell/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Important cluster concepts (navtitle][/map/reltable/relrow/relcell/topicref/topicmeta/linktext
{"- map/linktext "}) Important cluster concepts (linktext][/map/reltable/relrow/relcell/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) This topic introduces the leader and follower nodes and the Cluster Coordinator. (shortdesc] (topicmeta] (topicref] (relcell][/map/reltable/relrow/relcell
{"- map/relcell "})
[/map/reltable/relrow/relcell/topicref
{"- map/topicref "}) [/map/reltable/relrow/relcell/topicref/topicmeta
{"- map/topicmeta "}) [/map/reltable/relrow/relcell/topicref/topicmeta/navtitle
{"- topic/navtitle "}) Cluster behavior (navtitle][/map/reltable/relrow/relcell/topicref/topicmeta/linktext
{"- map/linktext "}) Cluster behavior (linktext][/map/reltable/relrow/relcell/topicref/topicmeta/shortdesc
{"- map/shortdesc "}) The Cluster Coordinator ensures that the nodes (represented by the Dgraph processes) in the cluster provide query processing that is stable in the face of individual follower node failures. This topic discusses cluster behavior in various scenarios, such as cluster startup, updates to the data files, and response to a node failure. (shortdesc] (topicmeta] (topicref] (relcell]
(relrow]
(reltable]
(map]