Silo Error Code Monitoring

Group	Log Type	Log Code Values	Threshold	Description
Azure Problems	Warning or Error	100800 - 100899	Any Error or Warning	Transient problems reading or writing to Azure table store will be logged as Warning. Transient read errors will automatically be retried. A final Error log message means there is a real problem connecting to Azure table storage.
Membership Connectivity Problems	Warning or Error	100600 - 100699	Any Error or Warning	Warning logs are an early indication of network connectivity problems and/or silo restart / migration. Ping timeouts and silo-dead votes will show up as Warning messages. Silo detesting it was voted dead will show as Error message.
Grain call timeouts	Warning	100157	Multiple Warnings logged in short space of time	Grain-call timeout problems are generally caused by temporary network connectivity issues or silo restart / reboot problems. The system should recover after a short time (depending on Liveness config settings) at which point Timeouts should clear. Ideally, monitoring for just the bulk log code 600157 variety of these warnings should be sufficient.
Silo Restart / Migration	Warning	100601 or 100602	Any Warning	Warning printed when silo detects it was restarted on same machine {100602) or migrated to different machine (100601)
Network Socket Problems	Warning or Error	101000 to 101999, 100307,100015, 100016	Any Error or Warning	Socket disconnects are logged as Warning messages. Problems opening sockets or during message transmission are logged as Errors.
Bulk log message compaction	Any	500000 or higher	Message summary based on bulk message threshold settings	If multiple logs of the same log code occur within a designated time interval (the default is >5 within 1 minute) then additional log messages with that log code are suppressed and output as a “bulk” entry with log code equal to the original log code + 500000. So for example, multiple 100157 entries will show in the logs as 5 x 100157 + 1 x 600157 log entry per minute.
Grain problems	Warning or Error	101534	Any Error or Warning	Detection of “stuck” requests for non-reentrant grains . The error code is reported every time a request takes longer than 5x request timeout time to execute.