...
| Code Block | ||
|---|---|---|
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<remoteInstance url="https://host:port/registry">
<id>instanceId</id>
<dbConfig>h2-db</dbConfig>
<readOnly>false</readOnly>
<registryRoot>/</registryRoot>
</remoteInstance> |
Elements of the configuration are explained below.
url | The URL of the remote instance. |
|---|---|
id | Remote instance id. |
dbConfig | The database configuration to use. |
...
| , which should not be the currentDBConfig. |
...
readOnly |
...
| Whether the instance is read-only. |
enableCache |
...
| Whether caching is enabled for this instance. | |
registryRoot |
...
| The root of the registry instance. |
...
| Info | ||
|---|---|---|
| ||
For specific configuration details on mounting a remote WSO2 Governance Registry (G-Reg) instance using the JDBC-based configuration model, refer to Sharing Registry Space Among Multiple Products. |
Atom-Based Remote Instance Configuration
| Warning | ||
|---|---|---|
| ||
The Atom-based remote instance configuration is not recommended for use in a production deployment as it does not support transactions. |
Following is an example configuration of a remote instance.
| Code Block | ||
|---|---|---|
| ||
<remoteInstance url="https://host:port/registry">
<id>instanceId</id>
<username>username</username>
<password>password</password>
</remoteInstance> |
Elements of the configuration are explained below.
url |
|---|
...
| The URL of the remote instance. | |
|---|---|
id |
...
| Remote instance id. | |
username |
...
| Username of the remote registry login. | |
password |
...
| Password of the remote registry login. | |
cacheId |
...
| The identifier used in computing cache keys. |
Below is an example configuration of a remote instance.
<remoteInstance url="https://host:port/registry"> <id>instanceId</id> <username>username</username> <password>password</password> </remoteInstance>
More You can attach more than one remote instance can be attached to a given WSO2 product by adding the relevant configuration details as seen above. Each Provide each remote instance must be given an identifier along with valid credentials that have sufficient privileges to perform the desired registry operations (requires at least read-privileges to the registry along with permission to log-in to the server). The URL of the remote instance can be deduced as follows:
- Let the URL of the destination server be
https://localhost:9443/services. Then the URL of the remote instance will behttps://localhost:9443/registry. - Let the URL of the destination server be
https://10.20.30.40:9445/webcontext/services. Then the URL of the remote instance will behttps://10.20.30.40:9445/webcontext/registry.
The cache id is an optional parameter and should be used . Use it only if multi-node replicated caching is enabled. The cache id should be in the format of databaseUser@databaseURL. For example, the cache id for a remote instance running with the default embedded H2 database will should be wso2carbon@jdbc:h2:repository/database/WSO2CARBON_DB.
| Info | ||
|---|---|---|
| ||
| You cannot mount the same server as a remote instance to itself. |
WebService-Based Remote Instance Configuration
| Info | ||
|---|---|---|
| ||
| The WebService-based configuration is not recommended for use in a production deployment as it does not support transactions. |
url - Following is an example configuration of a remote instance.
| Code Block | ||
|---|---|---|
| ||
<remoteInstance url="https://host:port/registry">
<id>instanceId</id>
<username>username</username>
<password>password</password>
<type>ws</type>
</remoteInstance> |
Elements of the configuration are explained below.
url | The URL of the remote instance. |
|---|---|
id |
...
| Remote instance id. | |
username |
...
| Username of the remote registry login. | |
password |
...
| Password of the remote registry login. | |
type |
...
| Set the type to ws. | |
cacheId |
...
| The identifier used in computing cache keys. |
Below is an example configuration of a remote instance.
<remoteInstance url="https://host:port/registry"> <id>instanceId</id> <username>username</username> <password>password</password> <type>ws</type> </remoteInstance>
More You can attach more than one remote instance can be attached to a given WSO2 product by adding the relevant configuration details as seen above. Each Provide each remote instance must be given an identifier along with valid credentials that have sufficient privileges to perform the desired registry operations (requires at least read-privileges to the registry along with permission to log-in to the server). The URL of the remote instance can be deduced as follows:
- Let the URL of the destination server be
https://localhost:9443/services. Then the URL of the remote instance will
...
- be
https://localhost:9443/registry. - Let the URL of the destination server
...
- be
https://10.20.30.40:9445/webcontext/services. Then the URL of the remote instance will
...
The cache id is an optional parameter and should be used only if multi-node replicated caching is enabled. The cache id should be in the format of databaseUser@databaseURL. For example, the cache id for a remote instance running with the default embedded H2 database would will be, wso2carbon@jdbc:h2:repository/database/WSO2CARBON_DB.
| Info | ||
|---|---|---|
| ||
| You cannot mount the same server as a remote instance to itself. |
Mount Configurations
Once a remote instance has been defined a collection on the remote registry can be mounted to the local instance.
path - Following is an example configuration of a mount.
| Code Block | ||
|---|---|---|
| ||
<mount path="/_system/config" overwrite="true|false|virtual">
<instanceId>instanceId</instanceId>
<targetPath>/_system/nodes</targetPath>
</mount> |
Elements of the configuration are explained below.
path | The path to which the mount will be added to. |
|---|---|
overwrite |
...
| Optional. Defines whether an existing collection at the given path will be overwritten or not. | |
instanceId |
...
| Remote instance id. | |
targetPath |
...
| The path on the remote registry. |
Here is an example configuration of a mount.
<mount path="/_system/config" overwrite="true|false|virtual"> <instanceId>instanceId</instanceId> <targetPath>/_system/nodes</targetPath> </mount>
Once you have defined a remote instance, a collection on the remote registry can be mounted to the local instance.
| Info | ||
|---|---|---|
| ||
It is recommended to refrain from mounting a target path under "/_system/governance" of a remote registry to path "/_system/config". Similarly, refrain from mounting a target path under "/_system/config" of a remote registry to path "/_system/governance". Such configurations can produce unpredictable results. For example, with the following mounting configurations, "/_system/governance" will be mounted to the correct path, which is "/_system/governance/mounting/governance" but "/_system/config" will be mounted to " /_system/governance/mounting/governance/ mounting/config". |
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Enable Clustering
To enable clustering for a node, the enable attribute of the configuration in $GREG_HOME/repository/conf/axis2/axis2.xml should file should be set to true as follows:
| Code Block | ||
|---|---|---|
| ||
<clustering class="org.apache.axis2.clustering.tribes.TribesClusteringAgent" enable="true"> |
This configuration is responsible for the initialization of a node in the cluster and getting this node it to join the cluster.
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