Working with Clusters

Click the Cluster option to see a set of diagrams with the following information:

Cluster Load History

  • RAM of Containers (red line) - real used memory by containers
  • All used RAM (green line) - used memory with buffers
  • RAM w/o buffers (orange line) - consumed memory that can't be reused (RAM of containers with all memory leaks and different overheads for system processes etc)


You can find out how many environments can be added due to the available extra load using the following formula:

Number of extra environments = (80% - RAM w/o buffers) / Average load usage per environment

80% is the maximum possible load of containers.
By subtracting the RAM of containers w/o buffers from these 80% you can get to know how much the load can be enlarged.

The Average load usage per environment can be calculated in such a way:

Average load usage per environment = RAM of containers / Active environments

To get the number of Active environments, navigate to Cluster > Environments. Sort environments due to the Running status and see the total number of displayed environments.


Example:


Calculating the Number of extra environments due to the screenshots provided above:

RAM w/o buffers = 30%
RAM of containers = 20%
Number of running environments = 99
Average load usage per environment: 20% / 99 env = 0,2 %


Number of extra environments
(80% - 30%) / 0,2% = 250 env

So we can say that due to our example 250 more environments can be created.

Environments Statistics

  • Deploys
  • Environments

Containers

  • Running
  • Stopped
  • Suspended
  • Other

Stacks Load

The stacks can be filtered by status:
  • Total
  • Launching
  • Down
  • Sleep
  • Running

The resulting graphs are grouped by types: load balancers (green), application servers (blue), databases (orange) and other stacks (gray). Also, you can hover over the particular line to see the exact amount of instances.