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While evaulating Seq on a test server, we've twice seen the Seq service have not come back automatically after a server reboot. The only strange thing in the Event logs is both times the system time was changed to a couple hours back in time. We've tried to repro this locally, but haven't found a way to actually change the system time to confirm ("Some settings are managed by your organization"). Thus reporting this in hope somebody else can repro or confirm. Per stability troubleshooting steps: Seq v3.4.20 - The Services console lists "Seq Event Server and Web UI" and should start automatically. OS: Windows Server 2016 Standard .NET version: 4.6.01586 (60632) Hardware: VMWare, Intel(R) Xeon(R) CPU, E5530 @ 2.40GHz, 2394 Mhz, 2 Core(s), 2 Logical Processor(s), 8GB RAM + 9.25GB virtual Settings > Diagnostics: - API Endpoint events: 0/0 0/0 0/0 - Storage: The event store is arranged in segments from 2017-05-17 to 2017-06-20. - Out of 35 recorded days, 35 days totalling 62711 events are cached in RAM. - Uptime 0 days - Working set (bytes) 231411712 - Threads 25 - User thread pool threads available 32765 - IOCP thread pool threads available 999 - Memory utilization 25% - Free space (bytes) 70923096064 - Sample system memory 28 minutes ago - Manage segment cache resources 28 minutes ago Tail of log file from when the server did not come back up: 2017-05-19 14:37:04.933 +01:00 [Information] Received OS shutdown notification 2017-05-19 14:37:04.933 +01:00 [Information] Stopping HTTP listener 2017-05-19 14:37:04.933 +01:00 [Information] Signalling for 2 background worker(s) to complete 2017-05-19 14:37:06.261 +01:00 [Information] Stopping 10 scheduled tasks 2017-05-19 14:37:06.261 +01:00 [Information] Stopping broadcast channel 2017-05-19 14:37:07.173 +01:00 [Information] Seq stopped cleanly Event Viewer > System Log lists the following two events: Date: 19/05/2017 13:21:47 The Seq service failed to start due to the following error: The service did not respond to the start or control request in a timely fashion. Date: 19/05/2017 13:21:47 A timeout was reached (30000 milliseconds) while waiting for the Seq service to connect. The only odd thing I can see is the server clock being adjusted around the same times, which is known to potentially cause issues. It caught my eye because the timestamps in the logs/event viewer don't match up (besides UTC/BST confusion), and there is this system log event timestamped 14:40:47: The system time has changed to 2017-05-19T13:40:47.094288300Z from 2017-05-19T12:23:40.322019000Z. Change Reason: An application or system component changed the time. Last time Seq did not come back, on 11. may, there was a similar "changed the time" event around when the server restarted (around 02:00-04:00 in the morning). Any ideas?
Posted by Anders 3 years ago
When configuring listener through the GUI there is a field for SSL thumbprint How do I specify it from command line? For example, if I want to change the port I can use this command: seq config -k api.listenUris -v https://localhost:443 But SSL does not work after seq restart. Looks like it is missing the thumbprint as SSL connection cannot be established The bind-ssl command involves "seq uninstall" (https://docs.getseq.net/docs/ssl). Is there a way to configure HTTPS and specify thumbprint without running seq uninstall? The main idea is to be able to switch the listener without uninstalling/reinstalling - just change config and restart. Is it possible?
Posted by Peter 3 years ago
Is there any way to force old events to be cached into memory? I have a 60gb database for 21 days of data. I want to get some statistics from errors from 1-2 weeks. I upgraded my AWS VM to a 32Gb instance, but even though I'm querying the previous week, I always get a timeout during the graph generation, and the Seq process won't go over 6Gb, sometimes even drops below. Is there a setting I can change to tell it to keep loading data into memory to speedup these queries and get these graphs?
Posted by Natan 3 years ago
Hello, we are logging every http request with domain account of user in a property. Currently we have a query with total request count on dashboard and it works fine. But we were unable to create a query to show number of distinct active users over period of time. Something like this would be needed: select count(*) from (select distinct(UserName) from stream where @EventType = 0x11111111 group by time (5m)) Or is there any other way to achieve this without a nested select? Regards, Vladimir
Posted by Vladimír Mihok 3 years ago
Hi there, Love the product. I have a web app that has yet to migrated to 4.5. Do you have a version that is compatible with .Net 3.5? If so, is it accessible through Nuget or can you point me to the download location? I look forward to your response. Thanks, Matt
Posted by Matt 3 years ago
We've started having a strange issue with SEQ over the last couple of days. The responsiveness of the dashboard has decreased, at times it seems to hang as it's waiting for data. This led me to have a look at our server to check the logs and see if there are any issues. Within the Task Manager I can see that the Seq Server is using about 20% CPU and only 212MB of RAM...this seemed a bit strange given I have seen the Seq process take up a lot more. The only other time I had seen this was when a corruption within one of our extents was causing problems, but this is not the case now. I checked the logs and noticed that over the last couple of days we are seeing a large number of DiskReaderLimit messages like the one below: `{"@t":"2017-05-30T22:09:51.2487661Z","@mt":"Waited {WaitSoFar} so far for one of {DiskReaderLimit} disk reader slots","@l":"Warning","WaitSoFar":"00:00:12","DiskReaderLimit":5,"SourceContext":"Seq.Storage.Events.EventStore","RequestId":"0166d25e-4801-4100-897a-3cadbde9c9f3"}` The Event Viewer is clear of any issues, so I am not sure where else to look. Any help would be appreciated.
Posted by Christian Blackburn 3 years ago
Hi, I have a SEQ DB with more than 10million events stored. I am trying to extract all these events to another system. I'm trying to use the .net API InSignalAsync method to loop through all events. For example, because I want to get all events, I'm trying this : var resultSet = await seq.Events.InSignalAsync( filter: "1=1", render: true, afterId: lastReadEventId, count:int.MaxValue); with the results of the task timing out (if I use a large count value like here... ) Since documentation is somewhat sparse on that matter on https://github.com/datalust/seq-api, can you provide a way, or help to effectively loop through the complete set of events contained in SEQ. Thanks
Posted by PL Ladouceur 3 years ago
Hi, I try to use seq with log4net. It works with a simple console application (c#) But it doesn't work with an ASP.NET website: nothing is displayed in the server console. My appender is ok (I do copy/paste between the console project and the website project). I get no error but nothing is logged. Any idea? Thanks
Posted by Etienne Bechatre 3 years ago
Hi All, I have just installed 4.0.60 and am getting an error trying to start the "Seq Event Server and Web UI service". I get the same error with 3.4.20 as well. I get the following error in the Event Logs "A timeout was reached (30000 milliseconds) while waiting for the Seq Event Server and Web UI service to connect." "The Seq Event Server and Web UI service failed to start due to the following error: The service did not respond to the start or control request in a timely fashion." If I go to the Services control panel to start the service manually I get the same error, and it happens immediately. This doesn't timeout after 30 seconds. I have checked C:|ProgramData\Seq\Logs and this directory is empty. Any ideas on how I can track down why this won't start Thanks in advance, Pete
Posted by Peter Vranich 3 years ago