Methods and apparatus for reconfiguring hosts in provider network environments

A method, comprising:

• performing, by one or more devices on a provider network:
• maintaining host status information for a plurality of host devices that implement slots of two or more slot types on the provider network;
• evaluating the host status information to determine rebuild strategies for reconfiguring the host devices;
• determining that additional slots of a particular one of the two or more slot types are needed on the provider network;
• selecting one of the plurality of host devices that implements slots of another type to be reconfigured to implement slots of the particular type;
• and
• reconfiguring the selected host device according to a respective rebuild strategy to implement slots of the particular type, wherein, in said reconfiguring the host device, at least one of a plurality of steps in a full rebuild procedure for host devices is not performed for the selected host device.

A non-transitory computer-readable storage medium storing program instructions that when executed on one or more computers cause the one or more computers to:

• maintain host status information for a plurality of host devices that implement slots of two or more slot types on a provider network;
• evaluate the host status information to determine rebuild strategies for reconfiguring the host devices, wherein a full rebuild procedure for host devices on the provider network comprises a plurality of steps, and wherein said evaluation for at least one of the host devices determines that one or more of the plurality of steps of the full rebuild procedure can be skipped when reconfiguring the respective host device;
• determine that additional slots of a particular one of two or more slot types are needed on a provider network, wherein the slots are implemented by host devices on the provider network;
• select one of the plurality of host devices that implements slots of another type to be reconfigured to implement slots of the particular type;
• and
• reconfigure the selected host device to implement slots of the particular type according to a respective rebuild strategy, wherein at least one of the plurality of steps in the full rebuild procedure is not performed when reconfiguring the selected host device.