Cluster Properties
The spectrum-container.properties file contains the properties that configure a cluster. This table describes how to set the cluster properties for a cluster where the server and configuration database are installed together on each node, and for nodes in the server cluster in a separated configuration database installation. If you are setting up a configuration database cluster, see Cluster Properties for a Configuration Database Cluster.
| Property | Description |
|---|---|
| spectrum.cluster.enabled | Set this to true. |
| spectrum.cluster.name | If this is the first node in the cluster, set this to the name you want to give
to the cluster. If this is not the first node in the cluster, set this to the name of the cluster that you want this node to join. If you are unsure of the cluster name, check the spectrum.cluster.name property on another node in the cluster. |
| spectrum.cluster.address | Specify the node's own IP address. |
| spectrum.cluster.seeds | If you are setting up the first node in the cluster, or if this is the first
node you are starting after having stopped the cluster, specify only the host name
or IP address of this server. This effectively points this node to itself as a seed
node, which is necessary in order for it to be able to start as the first node in
the cluster. Do not specify 127.0.0.1. If this is not the first node in the
cluster, specify the host name or IP address of each of the other nodes in the
cluster, including nodes that you have not yet installed. Separate each seed node
with a comma. When starting up, the node will attempt to access each seed node in
the order listed. If none of the seed nodes can be reached, the node will not join
the cluster.
Tip: We recommend that you specify multiple seed nodes so
that if one seed node is down others can be used to allow nodes to join the cluster.
We also recommend that you specify the same seed nodes in the same order on all
nodes in the cluster.
|
| spectrum.cluster.nodeID | Set this to an integer value to use as the ID for this node. The ID must be an
integer and must be unique among all nodes in the cluster. Tip: We
recommend that the first node you install have a node ID of 1, the second one 2, and
so on.
|
| spectrum.repository.server.cluster.nodeCount | This property sets the number of repository nodes in the cluster. This property
must be set on nodes that run a Neo4j instance. The way in which you specify this
property depends upon your cluster configuration:
|
| spectrum.runtime.hostname | Un-comment this property and set this property to the load balancer host name. |
| spectrum.runtime.port | Un-comment this property and set this property to the port on which you have configured the load balancer to listen. |
| spectrum.repository.addresses | Set this to the same IP address specified in
spectrum.cluster.address. The default value
localhost cannot be used in a clustered environment. For
clustered standard installations, in which the repository is embedded on the server
machine, define this property with each node's IP address. Separate each IP address
with a comma. For example, in a three-node cluster, you would specify: In
distributed clustered configurations, with separate clusters of servers and
repositories, on different machines, specify the IP addresses of each node in the
configuration database cluster. Separate each IP address with a comma. For example,
in a three-node database cluster, you would specify: |