POSTED ON 15 May, 2019

This section shows the current whole status of a Zevenet load balancer appliance: CPU usage, memory, load, connections, system information, farms status, interfaces configured, status and consumption. The dashboard has three sections: system, farms and network interfaces.

System Status

The top side of the Dashboard will show in graphics the current resources usage.

dashboard load balancer stats

In order to refresh the graphs, click on the refresh button on the top right of the graph.

CPU Usage

Measurements in the percentage of CPU available in the system.

Free. CPU not being used.
User. Usage of normal processes in userspace. Example: HTTP/S load balancer cores, administration web server, etc.
Nice. Usage of prioritized processes in the system.
System. Usage of kernel space processes. Example: L4 farms, network drivers, etc.
Iowait. Usage of Input/Output tasks like disk or networking.
Irq. Usage of interrupts to the main CPU.
Softirq. Usage of serving software interrupts.

Memory Usage

Free. Memory available in the system.
Used. Memory not available and used by the kernel and processes in the system.
Cached. Memory allocated but not currently used by any process.
Buffers. Memory used by buffers in the system.

Load Usage

Indicates the number of cores loaded and the history and progression of the load in the whole appliance during the last minute, last 5 minutes and last 15 minutes.

Connections Graph

Real-time connections graph that is supporting the whole appliance. In the top right of the graph, it’s available a pause and refresh button. This information is updated every 5 seconds.

System Information

Basic information related to the appliance: Zevenet Version, Appliance version and hypervisor, kernel version, hostname, and system date.

Farms Info

For every type of Load Balancing Service summarizes the number of totals, available or down farms services.

Zevenet is able to work at different layers and with very different methods, the farms profiles available are:

LSLB (Local Service Load Balancing). This kind of farm is able to serve virtual services and applications at layer 4 (through L4xNAT profile) and at layer 7 (through HTTP profile). The incoming connections will be managed and shared to the backends via a big list of protocols available: TCP/UDP/SIP/FTP/TFTP/SCTP/HTTP/HTTPS. More info
DSLB (Datalink Service Load Balancing). This kind of farm allows loading balance uplinks through layer 3 using dynamic load balancing routing. More info
GSLB (Global Service Load Balancing). This kind of farm allows loading balance domains and data centers using a DNS service load balancing technology. More info

For each of the farms profiles the widget shows how many farms there are in total and how many of them are in the different possible status:

Up. The farm is running normally
Problem. When the farm is up but at least one of the backends is not reachable or presents a problem.
Critical. When the farm is up but none of the backends are reachable. They can be down or in maintenance mode.
Down. The farm is totally stopped

NIC Interfaces

Graphic representation of every network interface (physical and bonding) and the naming of everyone. When the cursor is over a certain interface, a summarize with the inbound and outbound traffic and virtual/VLANs interfaces for every interface will be shown.

Next step, manage farms.

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Documentation under the terms of the GNU Free Documentation License.

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