5.6.25. `Admin-GCenter- Monitor` screen of the legacy web UI

From this section, solution administrators can view real-time information about the GCenter.

This interface is used to monitor the GCenter for CPU, memory, network, and disk load via dynamic dashboards.

After pressing the `Monitor` command from the `Admin-GCenter` menu, the following screen is displayed.

This screen enables:

The GATEWATCHER administrator can access information on the monitored services to ensure they are functioning properly:

Item	Description
1	`Basic host stats` section for real-time information from the GCenter
2	`ELASTIC SEARCH STATS` section for ElasticSearch cluster status information
3	`GCENTER GLOBAL DB STATS` section for global database information
4	Show / Hide button to expand / collapse the hidden area
5	`NETWORK STATS` section for network interface bandwidth information
6	`LIVE FEED SERVICE STATS` section for information on all GCenter services
7	`GWEB STATS` section for information on the Nginx Web server

5.6.25.1. General presentation and navigation agreement

`Basic host stats` section appears by default. The other sections are visible by clicking on the section name or the `Show` button.

It is possible to hover over the charts to view the measured values.
On charts with several plotted values, it is also possible to choose which element will be plotted by clicking on the legend to show or hide them.
In addition, depending on the position of the mouse cursor on any chart, the position on the other charts is also synchronised.
This enables you to access all the necessary information at a given time T.
The double arrow to the left enables moving on the graph to the left. This can be done by sliding the mouse to the right.
The double arrow to the right enables moving on the graph to the right. This can be done by sliding the mouse to the left.
The Play button enables all graphics to be reset to their default auto-refresh status. The administrator can also double-click on the content of the chart with his mouse.
The + and - buttons offer the possibility to zoom into the graph or press Shift and select the graph area to zoom in. Zooming is also possible by pressing Shift or Ctrl with the mouse wheel.
The double arrows up/down enable the administrator to drag with their mouse to use this setting to change the graph vertically. It is possible to double-click to reset between two statuses, the default chart and the one that corresponds to all values.

5.6.25.2. `Basic host stats` section

The BASIC HOST STATS section provides real-time information from the GCenter with global system indicators such as:

`CPU usage` average
`Global Load`
`RAM Usage`
`Swap Usage`
disk statistics including used, free, and reserved capacity for different directories are also monitored:

`Disk R/W Usage`

`Disk Global Usage`

`Disk Global Usage`

`Disk Usage: /es`

`Disk Usage: /backups`

`Disk Usage: /var/log`

5.6.25.3. `ELASTIC SEARCH STATS` section

`ELASTIC SEARCH STATS` section provides information on the status of the ElasticSearch cluster. This is responsible for recording and then indexing the data captured by the GCap probe in the GCENTER.

The cluster bandwidth is monitored.

5.6.25.4. `GCENTER GLOBAL DB STATS` section

This `GCENTER GLOBAL DB STATS` section provides information on what the GCenter's global database is consuming by way of counters:

`Gcenter Global DB Transactions`
`Gcenter Global DB Reads`
`Gcenter Global DB Writes`
`Gcenter Global DB Size`

5.6.25.5. `GWEB STATS` section

This `GWEB STATS` section provides information about the GCenter's Nginx web server with the counters:

`GWeb Active Connections`
`GWeb Connections Rate Accepted`
`GWeb Connections Rate Handled`
`GWeb Requests`

5.6.25.6. `LIVE FEED SERVICE STATS` section

This `LIVE FEED SERVICE STATS` section offers information about all services of the GCenter according to the counters:

`Live Feed Operations`
`Live Feed Commands`
`Live Feed Allowed Hits`
`Live Feed Memory Consumption`
`Live Feed Memory LUA Consumption`
`Live Feed Allowed Client Count`

5.6.25.7. `NETWORK STATS` section

This `NETWORK STATS` section provides information about the bandwidth (`Interface Bandwidth for mgmt0`) of the GCenter's mgmt0 network interface.