I am using NLog for production tracing of a large application. I am looking for a simple add in that allows me to remotely enable/disable various loggers / change their severity at the source during run time.
Are there any easy addins to do this? Do other frameworks support such things?
Update: To be clear, I am starting with logging turned off at startup, but would like to use my log viewer to remotely tell my application to begin sending trace information for particular loggers to log events of severity X or higher. Obviously I can write this myself, just looking for any libraries / logging frameworks that may have this built in.
Severity of log messages cannot be changed dynamic. The idea in NLog is not to change the severity of a message, but the routing of those messages.
If you enabled configuration auto-reload, you could turn off writing the trace messages, and enabled it when you need with (without application restart)
Related
I'm exploring the serilog in asp.net core and come across the word bootstrap logging. I tried to find out more about it but there is nothing.
Log.Logger = new LoggerConfiguration()
.WriteTo.Console()
.CreateBootstrapLogger();
I got this syntax for initializing the bootstrap logger but didn't get the reason for using it.
Bootstrap logging is a way for logging messages during the early phases of an application's startup, before the main logging infrastructure has been fully initialized.
The startup process in .NET Core applications includes various stages, such as loading and initializing the program, establishing the application's dependencies, and configuring the logging infrastructure. During these early phases, it may be required to log messages for diagnostic or troubleshooting purposes.
Bootstrap logging, which allows you to log messages to a temporary storage destination (such as the console or a memory buffer) before the main logging infrastructure is fully configured, is one approach to accomplish this. This is handy if you need to log messages before the application's dependencies are configured, or if you need to troubleshoot issues that may arise during the application's startup.
I am using different azure service,(Kuberentes cluster,API,Key vault,IOT HUB, ,cosmos db,storage account,datalake,ad b2c,Power BI).I want the failure message and time of these service in my c# (other any other language)application. Is there any api for this purpose ?.or any way to get failure message and time ?
Failure means
failure state or non responding state of azure service.
I just want the any failure or fault message.Not normal message and service message.i didn't find any such kind filter or rest api or type
Since you are already using multiple Azure Services your best bet would be to integrate your application with Azure Application Insights. Application Insights is a monitoring and diagnostics tool provided by Azure. Configuring Application Insights is extremely easy. You can check this link.
Depending upon your framework and choice of language there are multiple options. Once you have installed the Application Insights SDK in your solution, it will automatically start monitoring and reporting all failures. All external dependencies in your application will get automatically tracked and all failures will be logged automatically (in 90% of the scenarios you won't have to write custom code to track these errors). Other parameters like time and failure messages will also get logged. In case you are interested to check which Azure Services are monitored check the link here.
Along with this you will also get the option to log custom messages, events, metrics, exceptions or dependencies.
I don't know the exact purpose of your question ,But if you want to check the service is available or not (failed due to some internal issue of azure) then use resource health check.
https://learn.microsoft.com/en-us/azure/service-health/resource-health-faq
If you want to monitor azure services then you must create a diagnostic setting for each azure service to send its logs to log analytics workspace to use with an azure monitor or for archiving you can use Azure storage archive tier/cool tier or Azure Event hubs to forward outside of Azure(like configuring with Kafka).
For more information visit https://learn.microsoft.com/en-us/azure/azure-monitor/
I developed some web services will be installed on 4 different servers behind a load balancer mantains sessions.
I'm using c# and log4net.
The appenders are a RollingFileAppender and an AdoNetAppender.
I read from https://logging.apache.org/log4net/release/faq.html (section How do I get multiple process to log to the same file?)
If you use RollingFileAppender things become even worse as several
process may try to start rolling the log file concurrently.
RollingFileAppender completely ignores the locking model when rolling
files, rolling files is simply not compatible with this scenario.
I can't use RollingFileAppender with MinimalLock. But I want to log from the different servers to the same file.
I prefer to keep log4net but I'm interested also in other solution (not the linux syslog one). No commercial solutions allowed for costs.
Unfortunately, you'll discover that logging directly to the same file from multiple processes is not a very feasible option.
You have several alternatives:
Log to different files - each server can have a separate file
Send all your logs to one application, which will then log to the files. This will make your logging more brittle and require extra development effort.
Log to a database - databases are designed to have multiple processes writing to them at once
Log to a logging server - Seq, Stackify Retrace, and Azure Application Insights are some examples of solutions that are robust and designed to ingest logs from multiple applications - plus you get much better capabilities
I would like to display the log created by Log4Net on a web page in my admin interface.
Isnt there any methods available in the log4net library to read the error messages from the configured source (textfile or database)? At the moment I am using a database table to log all errors.
If not, there must be some third party libraries available that does this for me?
If you want an elegant solution to collect and search logs using log4net based logging, a syslog daemon like kiwi syslog in combination with log4net local or remote syslog appender would probably be the easiest way to do it. Logging in a database works, but in my opinion logs are of no concern to the application itself and should be kept away from it. For instance a failing database connection would probably not show up if the logs resided solely on the same database.
I am trying to modify an already written Windows service.
I see the source has an System.diagnostic.EventLog object which logs different action of the service.
I am trying to figure out how do i read this log. From semantics it seems that Eventlog is logging several actions of service.
where is this log stored, how can i see it, i need access to it as my service sometimes stop intermittently.
I tried to google it but did not find any solid answers. Putting the questions simply what is an eventlong and how do i use it.
In 'Computer Management' you'll see an entry labelled 'Event Viewer'. Depending on which version of Windows you're running, there will be several sub-entries below this conforming to each of the event logs Windows maintains. Your application will probably be logging to the 'Application' log, although it might also log to 'System'. Click these subitems to have their log contents show up in the central pane.