Reducing overlay network overhead across container hosts

1. A method comprising:

exposing, by each of a first container and a second container, at least one network service port, wherein the first container and second container are running on a first host;

assigning, by a container scheduler, a network complexity weight to the first host, wherein the network complexity weight is based on a quantity of network service ports that the first container and the second container expose;

filtering, by the container scheduler, a plurality of hosts based on resource availability corresponding to each host of the plurality of hosts;

ranking, by the container scheduler, the plurality of hosts based on a respective network complexity weight corresponding to each host of the plurality of hosts; and

dispatching, by the container scheduler, a third container to a second host of the plurality of hosts based on the resource availability and the network complexity weight corresponding to the second host.

2. The method of claim 1 , wherein resource availability includes at least one of a processor availability metric and a memory availability metric.

3. The method of claim 2 , wherein the memory availability metric is a random-access memory availability metric.

4. The method of claim 1 , wherein the first host and the second host are on different physical processors.

5. The method of claim 1 , wherein the network complexity weight is further based on which network service ports are exposed by the first container and second container.

6. The method of claim 1 , wherein the container scheduler updates the network complexity weight corresponding to the second host after the third container is dispatched to the second host.

7. The method of claim 1 , further comprising starting, by an orchestrator, the third container.

8. The method of claim 1 , further comprising determining, by the container scheduler, the network complexity weight of the first host.

9. A system comprising:

a memory;

at least one processor in communication with the memory;

a first container and a second container running on a first host, wherein each of the first container and second container expose at least one network service port; and

a container scheduler executing on the at least one processor, wherein the container scheduler executes on the at least one processor to:

assign a network complexity weight to the first host, wherein the network complexity weight is based on a quantity of network service ports that the first container and the second container expose,

filter a plurality of hosts based on resource availability corresponding to each host of the plurality of hosts,

rank the plurality of hosts based on a respective network complexity weight corresponding to each host of the plurality of hosts, and

dispatch a third container to a second host of the plurality of hosts based on the resource availability and network complexity weight corresponding to the second host.

10. The system of claim 9 , wherein the first host and the second host are on different physical processors.

11. The system of claim 9 , wherein the network complexity weight is further based on which network service ports are exposed by the first container and second container.

12. The system of claim 9 , wherein resource availability includes at least one of a processor availability metric and a memory availability metric.

13. The system of claim 9 , wherein the memory availability metric is a random-access memory availability metric.

14. The system of claim 9 , wherein the container scheduler updates the network complexity weight corresponding to the second host after the third container is dispatched to the second host.

15. The system of claim 9 , further comprising an orchestrator, wherein the orchestrator starts the third container.

16. The system of claim 9 , wherein the container scheduler executes on the at least one processor to determine the network complexity weight of the first host.

17. A non-transitory machine readable medium storing code, which when executed by at least one processor, causes a container scheduler to:

assign a network complexity weight to a first host, wherein the network complexity weight is based on a quantity of network service ports that a first container and a second container running on the first host expose;

filter a plurality of hosts based on resource availability corresponding to each host of the plurality of hosts;

rank the plurality of hosts based on a respective network complexity weight corresponding to each host of the plurality of hosts; and

dispatch a third container to a second host of the plurality of hosts based on the resource availability and the network complexity weight corresponding to the second host.

18. The non-transitory machine readable medium of claim 17 , wherein the first host and the second host are on different physical processors.

19. The non-transitory machine readable medium of claim 17 , wherein the network complexity weight is further based on which network service ports are exposed by the first container and second container.

20. The non-transitory machine readable medium of claim 17 , wherein resource availability includes at least one of a processor availability metric and a memory availability metric.