Method and apparatus for service hosting of distributed storage system

An apparatus for service hosting of a distributed storage system, comprising:

• at least one processor;
• and
• a memory storing instructions, the instructions when executed by the at least one processor, cause the at least one processor to perform operations, the operations comprising:
• acquiring, in response to receiving expected service description information for a target service, current service description information and at least one piece of tag information of at least one storage node, service description information including:
• software package information, container information, a storage node filtering condition, and grading release information;
• selecting a target storage node from the at least one storage node, tag information of the target storage node satisfying a storage node filtering condition in the expected service description information and/or a storage node filtering condition in the current service description information;
• determining a to-be-performed task of the target storage node, based on a difference between the expected service description information and the current service description information, and software package information and container information in the expected service description information;
• decomposing the task into at least one operation;
• generating a directed graph according to grading release information in the expected service description information and the at least one operation, a node of the directed graph representing an operation, wherein the grading release information includes at least one of:
• grouping information of the operation, concurrent information of the operation, plan suspension information of the operation, or disaster tolerant information of the operation;
• and
• sending information for indicating the task to the target storage node, to cause the target storage node to perform the task.

A non-transitory computer readable medium, storing a computer program, wherein the computer program, when executed by a processor, causes the processor to perform operations, the operations comprising:

• acquiring, in response to receiving expected service description information for a target service, current service description information and at least one piece of tag information of at least one storage node, service description information including:
• software package information, container information, a storage node filtering condition, and grading release information;
• selecting a target storage node from the at least one storage node, tag information of the target storage node satisfying a storage node filtering condition in the expected service description information and/or a storage node filtering condition in the current service description information;
• determining a to-be-performed task of the target storage node, based on a difference between the expected service description information and the current service description information, and software package information and container information in the expected service description information;
• decomposing the task into at least one operation;
• generating a directed graph according to grading release information in the expected service description information and the at least one operation, a node of the directed graph representing an operation, wherein the grading release information includes at least one of:
• grouping information of the operation, concurrent information of the operation, plan suspension information of the operation, or disaster tolerant information of the operation;
• and
• sending information for indicating the task to the target storage node, to cause the target storage node to perform the task.