I am quite new for log4j2 logger and my requirement to write a log from application server and web server.
I am having two different environment on which J BOSS server is deployed.
Now I am having a log file on web server environment which is writing logs for errors and I want to write logs from application server also in same file.
Please suggest.
If you want the logs to be integrated together you should use a solution like Splunk or Elastic Search/Logstash/Kibana (ELK).
When you try to write to a file from 2 different processes your file will get corrupted unless you use file locking. However, your throughput will decrease significantly and it isn't supported for rolling files. So the best approach is to send the logs to a single process where they can be aggregated.
Related
When I run my server which is in websphere, it generates log file in "C:\Softwares\wlp\usr\servers\theory\logs\messages.logs".It has only theory.war in C:\Softwares\wlp\usr\servers\theory\dropins
When I place more than one war files such as theory.war, epic.war, success.war and execute the server it generates single log file in C:\Softwares\wlp\usr\servers\theory\logs\messages.logs
I have to generate separate log files for each war like :
C:\Softwares\wlp\usr\servers\theory\logs\theory.logs
C:\Softwares\wlp\usr\servers\theory\logs\epic.logs
C:\Softwares\wlp\usr\servers\theory\logs\success.logs
Im using util.logging package.
If you want to have separate logfiles you have to either write your custom FileHandler for JUL, or use 3rd party logging framework as Log4j for example.
You could also use binary logging , and then use binaryLog tool to filter messages for given app.
However, I'd STRONGLY recommend NOT doing all that, since in new apps that follow 12 factor principles should put all messages to standard out and standard error steams, what JUL by default does. This is used by containers, container orchestrators and logging infrastructure implemented there. Logging infa allows you to filter log messages based on various params without the need for separate log files. And if you have separate log files you will have to manually integrate that.
We have talend-jobs triggered within Spring-boot application. Is there any way to configure the output of talend-jobs to the application log files?
One workaround we find is to write logs directly to an external file (filePath passed as context-param). But wanted to find if there is a better way to configure this seamlessly.
Not sure if I understood the question correctly, but I guess your concerns might be on what might have happened to the triggered Jobs.
Logging
With Respect to Logging for Talend, You could configure using Log4j,
https://help.talend.com/reader/5DC~TBhDsBie5JTXyVLW4g/QSGCZJKXo~uhKvZDq1DxUg
Monitoring
Regarding the Status of the Job Executed, you could get the execution details retrieved using REST Call(Talend Metaservlet API).
getTaskExecutionStatus
https://help.talend.com/reader/oYf9gKhmYrkWCiSua4qLeg/SLiAyHyDTjuznLR_F~MiQQ
By Modifying the Existing Talend Job,You could also design a like a feedback loop, ie Trigger a REST Call back to your application. With the details of Execution from Talend Job.
I have a clarion application running in Win Server 2016 talking to a sybase DB, over the past few weeks we find the application gets frozen for different users at a given time. However the user can leave the session as such and start a new one and that works good. The users are known to use multiple instances of the same application in one remote server or on multiple servers. Having said that, I wanted to get more information on the freezeup and looked through the application event logs in the system where I see explorer.exe crashes but these correlate to the time of occurrence of the issue at certain times but not always, checked the DB transaction logs from Sybase and I do not find any crashes, errors or stuck connections. Having said that, since I have exhausted all possible options I am reaching out to you guys to know if there are any other places that i can look for to gather more information.
I would love to know of any application / tools that we could use to gather logs of a frozen clarion application on windows. Also good to know if anyone has faced such a situation and where and how have you guys looked into the issue.
Thanks in advance for your help in this.
Clarion's runtime library and database drivers expect a persistent connection. Disconnects that are normal with remote ODBC can cause a problem (including app hangs) unless you test for them at the ABC file mgr level and reconnect, or use similar steps to test and recover.
If you're looking for specifics about what's going on between the driver and the SQL backend, I suggest using Clarion's database driver trace facilities. From the help topic: "Logging Driver I/O for debugging":
To view the trace details in debugview, name the target trace file "DEBUG:"
Logging opens the named logfile for exclusive access. If the file exists, the new log data is appended to the file.
On Demand Logging
For on-demand logging you can use property syntax within your program to conditionally turn various levels of logging on and off. The logging is effective for the target table and any view for which the target table is the primary table.
file{PROP:Profile}=Pathname !Turns Clarion I/O logging on
file{PROP:Profile}="DEBUG:" !Turns Clarion I/O logging on and
!sends output via OutputDebugString()
!(viewable via debugview, etc)
file{PROP:Profile}='' !Turns Clarion I/O logging off
PathName = file{PROP:Profile} !Queries the name of the log file
file{PROP:Log}=string !Writes the string to the log file
file{PROP:Log}="DEBUG:" !Writes the string to the log file
file{PROP:Details}=1 !Turns Record Buffer logging on
fFile{PROP:Details}=0 !Turns Record Buffer logging off
where Pathname is the full pathname or the filename of the log file to create. If you do not specify a path, the driver writes the log file to the current directory.
You can also accomplish on demand logging with a SEND() command and the LOGFILE driver string. See LOGFILE for more information.
Example I use frequently, which was based on the help above:
SYSTEM{PROP:DriverTracing} = '1'
CRMNotes{PROP:TraceFile} = 'DEBUG:'
CRMNotes{PROP:Details}=1
CRMNotes{PROP:Profile}= 'DEBUG:'
CRMNotes{PROP:LogSQL} = 1
I have 10 applications they have same logic to write the log on a text file located on the application root folder.
I have an application which reads the log files of all the applicaiton and shows details in a web page.
Can the same be achieved on Windows Azure? I don't want to use the 'DiagnosticMonitor' API's. As I cannot change logging logic of application.
Thanks,
Aman
Even if technically this is possible, this is not advisable as the Fabric Controller can re-create any role at a whim (well - with good reasons, but unpredictable none-the-less) and so whenever this happens you will lose any files stored locally on a role.
So - primarily you should be looking for a different place to store those logs, and there are many options, but all require that you change the logging logic of the application.
You could do this, but aside from the issue Yossi pointed out (the log would be ephemeral; it could get deleted at any time), you'd have a different log file on each role instance (VM). That means when you hit your web page to view the log, you'd see whatever happened to be on the log on that particular VM, instead of what you presumably want (a roll-up of the log files across all VMs).
Windows Azure Diagnostics could help, since you can configure it to copy log files off to blob storage (so no need to change the logging). But honestly I find Diagnostics a bit cumbersome for this. It will end up creating a lot of different blobs, and you'll have to change the log viewer to read all those blobs and combine them.
I personally would suggest writing a separate piece of code that monitors the log file and, for each new line, stores the line as an entity (row) in table storage. This bit of code could be launched as a startup task and just run continuously as a separate process (leaving everything else unchanged). Then modify the log viewer to read the last n entities from table storage and display them.
(I'm assuming you can modify the log viewer even if you can't modify the apps that log to the file.)
What about writing logs to something like azure storage table? Just need to define unique ParitionKey/RowKey, then you can easily retrieve the log for the web page.
I always forget to check what's going on in IIS on our webservers, and am wondering: is there some stupid applet or something that always runs locally that I can click on to check event logs and IIS logs on a remote machine?
Mark
You can set up samurize to follow the output of the logging on the local and remote machines but it requires some setup.
You can use a remote shell utility such as OpenSSH to connect to remote machines securely.
One at a time. Compmgmt.msc -> connect to another computer.
But one at a time is boring. Monitoring dozens of machines? I've been using logparser from MS for my log monitoring needs. I run a query that dumps errors and warnings to a csv file a few times a day.
So far, I've only used it to aggregate event logs across the dozen servers in our QA environment, but it appears to take many forms on log input, including IIS. A pseudo log file query (don't have samples with me)
logparser "Select [eventtype], [message] into output.csv FROM \\server1\system, \\server2\system" -i EVT
This shows: You can aggregate multiple servers. You tell it the input format - it supports a dozen log types. You can dump it into a csv file. It looks sort of like SQL. This article in security focus has an IIS log sample.
I'm not an applet type of guy, so I haven't though much about desktop widgets to do this.