The Index Landscape window displays how the indexes are distributed among the index servers and the status of index replication.
A table displays existing indexes and information on each index. You can find a description of the table columns below.
Columns Index IDThrough Index Parts
Index ID Index PartsIndex ID and index types
The Index Parts column specifies the parts that the index comprises. This column is filled only for logical indexes, compound indexes, and BIA indexes.
Indexer Column
Index server that updates the master index.
The values in this column have the format <traffic_light> <server>, <index_version>. The elements have the following meanings:
Element |
Purpose |
<light> |
Status of the index server that is updating the master index:
|
<server> |
Tells you whether the master index server or the backup index server updates the master index. |
<index_version> |
Version of the master index This number is increased by one every time the master index is updated. |
Searcher Column
Index server on which the search takes place.
The values in this column have the format <traffic_light> <server> + <n> of <m> slaves, <index_version>. The elements have the following meanings:
Element |
Purpose |
<light> |
Status of the servers that make the index available. The status tells you whether the servers have started and whether they have the correct index version.
|
<server> |
Tells you whether the master index server or the backup index server is used for the search.
|
+ <n> of <m> slaves |
Number of slave index servers on which the index version <index_version> is available. |
<index_version> |
Index version on which TREX is currently searching. |
Search Version Column
Setting that is valid for the search. The following settings are possible:
latest
TREX searches on the most up-to-date index version.
majority
TREX searches on the index version that is available on most of the index servers.
master or backup
TREX searches on the master index. The master index server or the backup index server answers the search queries.
This setting is displayed if no slave index servers are configured.
(master) or (backup)
TREX searches on the master index. The master index server or the backup index server answers the search queries.
This setting is displayed if the master index is locked for searching and TREX is using it anyway. This may be because:
The master index has not yet been replicated.
The slave index servers are not available.
The Search Version parameter has the setting latest. None of the slave index servers has the most up-to-date index version.
Replication Status Column
Index replication status
The values in this column have the format <traffic_light> <status>. The elements have the following meanings:
Element |
Purpose |
<light> <status> |
Replication status
|
<host_name>:<index_server_port> Column
Information on the individual TREX servers
The column header displays the index server status:
Green or active
Server is available
Yellow or unknown
The name server does not know the server status. The server receives this status in the start phase. If the name server can reach the server, it changes the light to green. If not, it changes the light to red.
Red or inactive
Sever is not available
The values in this column have the format <+ | - server_type>, <index_version>. The elements have the following meanings:
Element |
Purpose |
<+ | - server_type> |
Tells you whether the index server is active and what its role is.
|
<index_version> |
Index version available on the index server. |
Detailed View
The TREX admin tool (stand-alone) provides a standard view and a detailed view of the table. The detailed view of the table displays the following additional information:
Index description
Path specifications
Specifies whether the slave index servers use a common slave index ( Shared Slaves = yes) or separate slave indexes ( Shared Slaves = no).
You can use Show Details to display the detailed view.