Shared volume based centralized logging

A computer implemented program product for use with a hosted service computing system that is architecturally represented as a computing node stack that is organized into a plurality of layers including system software layer, with the computing node stack including a plurality of computing nodes respectively representing server computers in the hosted service computing system, the computer implemented program product comprising:

• a storage medium;
• and
• computer code including data and instructions for causing a processor(s) set to perform the method comprising:
• deploying in the hosted service computing system, a log agent instantiation such that the log agent instantiation is running in the system software layer of the computing node stack representation of the hosted service computing system, deploying in the hosted service computing system, a log data collection agent instantiation, deploying, in the hosted service computing system a first instantiation of a first application, with the first instantiation of the first application being reserved for the use of a first tenant of a plurality of tenants of the hosted service computing system, receiving, by the log agent instantiation and from the log data collection agent instantiation, first application logging data that is generated by operations of the first instantiation of the first application and collected by the log data collection agent instantiation, and storing, by the log agent instantiation, the first application logging data in a storage area network (SAN) type storage system, wherein the method includes deploying, in the hosted service computing system a second instantiation of the first application, with the second instantiation of the first application being reserved for the use of a second tenant of the plurality of tenants of the hosted service computing system.

A computer implemented method comprising:

• collecting, by a distributed logging system, logging data generated by operation of a distributed computing system that is used by a plurality of tenants;
• and
• storing, under control of the distributed logging system and via a storage path, the logging data as a plurality of files stored in a multi-tier, shared volume storage system, with the storage of the logging data as a plurality of files including:
• dividing the plurality of files among and between a plurality of shared volume data structures, and organizing each shared volume data structure of the plurality of shared volume data structures according to a plurality of tiers;
• for each given file of the plurality of files;
• mapping, by a domain agent and in a mapping table data structure, an association between the given file and the shared volume data structure in which the given file is stored, and mapping, by the domain agent and in the mapping table data structure, an association between the given file and a file path through the tiers to identify a location where given file is stored;
• mounting, in read only mode a first shared volume data structure of the plurality of shared volume data structures;
• and
• subsequent to the mounting, reading the logging data for a specified tenant of the plurality of tenants from the first shared volume data structure based upon the mappings of the mapping table.