High availability control plane node for container-based clusters

A system comprising:

• one or more processors;
• and
• at least one memory, the one or more processors and the at least one memory configured to:
• determine a first control plane node is unreachable within the container-based cluster, wherein the first control plane node comprises:
• first control plane components, actively running on the first control plane node, that are configured to manage other components within the container-based cluster, and
• a first network interface activated to allow for management of the other components within the container-based cluster by the first control plane components;
• in response to determining the first control plane node is unreachable, activate a second control plane node previously deployed in the container-based cluster, wherein prior to activating the second control plane node the second control plane node comprises:
• second control plane components, not actively running on the second control plane node, that are configured to manage the other components within the container-based cluster, and
• a second network interface deactivated and configured to allow for management of the other components within the container-based cluster by the second control plane components;
• in response to determining the first control plane node is unreachable, remove the first control plane node from the container-based cluster;
• assign an internet protocol address of the first control plane node to the second control plane node;
• broadcast a gratuitous address resolution protocol message to inform at least the other components in the container-based cluster about the assignment of the internet protocol address of the first control plane node to the second control plane node;
• determine a number of inactive control plane nodes associated with the second control plane node and comprising control plane components not actively running on the inactive control plane nodes is less than a minimum number of inactive control plane nodes that are to be deployed in the container-based cluster for the second control plane node;
• and
• deploy one or more inactive control plane nodes associated with the second control plane node in the container-based cluster until the minimum number of the inactive control plane nodes that are to be deployed in the container-based cluster for the second control plane node is met.

A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a computing system, cause the computing system to perform operations for providing a high availability control plane in a container-based cluster, the operations comprising:

• determining a first control plane node is unreachable within the container-based cluster, wherein the first control plane node comprises:
• first control plane components, actively running on the first control plane node, that are configured to manage other components within the container-based cluster, and
• a first network interface activated to allow for management of the other components within the container-based cluster by the first control plane components;
• in response to determining the first control plane node is unreachable, activating a second control plane node previously deployed in the container-based cluster, wherein prior to activating the second control plane node the second control plane node comprises:
• second control plane components, not actively running on the second control plane node, that are configured to manage the other components within the container-based cluster, and
• a second network interface deactivated and configured to allow for management of the other components within the container-based cluster by the second control plane components;
• in response to determining the first control plane node is unreachable, removing the first control plane node from the container-based cluster;
• assigning an internet protocol address of the first control plane node to the second control plane node;
• broadcasting a gratuitous address resolution protocol message to inform at least the other components in the container-based cluster about the assignment of the internet protocol address of the first control plane node to the second control plane node;
• determining a number of inactive control plane nodes associated with the second control plane node and comprising control plane components not actively running on the inactive control plane nodes is less than a minimum number of inactive control plane nodes that are to be deployed in the container-based cluster for the second control plane node;
• and
• deploying one or more inactive control plane nodes associated with the second control plane node in the container-based cluster until the minimum number of the inactive control plane nodes that are to be deployed in the container-based cluster for the second control plane node is met.