I am attempting to use Azure Log analytics to query IIS logs that sit in four separate storage accounts (based on region) that are generated from our WebApps. Is this possible? I'm only seeing azure activity logs on my queries - I'm very new to log analytics, so any help would be greatly appreciated.
There is no direct way for this, you can take a look at this issue and it mentions:
Log Analytics is only supported at the IaaS (VM) level, not at PaaS (App Service) level.
If you want to do that, you can manually set up a way which sends the logs from blob storage to Log analytics, following this tutorial(It's a little hard to do that).
As well, you can also upvote on this feedback.
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Using Log Analytics, is it possible to search thru data stored in a container inside an Azure storage account? We have an Azure Function that reaches out to an API in O365 for log data and then it pushes that data into a storage account. We would like to be able to query this data.
We can push content inside your container to log analytics workspace repository using something called log analytics http data collector API.
We need to build your own integration of sending container content to log analytics by leveraging http data collector API.
You may refer to the suggestion mentioned in the article
https://learn.microsoft.com/en-us/azure/azure-monitor/platform/data-collector-api
Additional information: - Azure Functions
- Azure Automation
- Logic App
With any of these what you will do is have some schedule that will run on certain interval. When it is ran you will execute query against Log Analytics to get data. The results from the query you will transfer to Azure Storage may be as blob. You might have to do some transformation on the data depending on your scenario. The most important that you have to make sure is that you do not miss data or upload the same data twice to the storage. Log Analytics query language allows you to specify time frame for the results. I hope this will help you.
Kindly let us know if the above helps or you need further assistance on this issue.
Our Project is a Java Spring boot application, We have a logging system using log4j, Which we are pushing into the Azure Storage accounts.
Question:
I want to query these custom logs in OMS. (Is it possible)
If Yes how.
Till now what i have tried is.
1. Pushed the logs in Blob storage using Logback and container looks like
Pushed logs in table storage
And configured Storage accounts in log analytics in Azure workspace
But i am unable to see any Analytic data to query in OMS .
Please help.
If you can't use Application Insights, you can read logs files from Storage and use HTTP Data Collector API to push logs into Log Analytics workspace. Samples and reference: https://learn.microsoft.com/en-us/azure/log-analytics/log-analytics-data-collector-api
Where does data logs of Azure Pipeline v2 gets stored, I would like to retrieve data of failed pipelines for specific date.( Dont want to use azure portal to view these data). Is there any table/view holds such datalogs from database.
To my knowledge, to obtain diagnostic logs you can use Azure Monitor, Operations Management Suite (OMS), or monitor those pipelines visually.
By Azure Pipeline v2, you mean Azure Data Factory v2. Alert and Monitor data factories using Azure Monitor
Diagnostic logs:
Save them to a Storage Account for auditing or manual inspection. You can specify the retention time (in days) using the diagnostic settings.
Stream them to Event Hubs for ingestion by a third-party service or custom analytics solution such as PowerBI.
Analyze them with Log Analytics
The logs are stored on Azure Data Factory web server for 45 days. If you want to get the pipeline run and activity run metadata, you can use Azure Data Factory SDK to extract the information you need and save it somewhere you want.
Recommended approach on this for log term analysis as well as limiting access to a production data factory would be to configure logs to be sent to log analytics. Be sure to enable dedicated logging tables as this will help on the backend in terms of organizing your logs.
From there you can also set up alerts and access groups running off of log analytics queries for better monitoring.
I store logs from Azure Web App and Redis Cache in Storage Accounts, but I wonder, what is the best way to analyze them?
Redis seems to store diagnostics information in WADMetrics* tables, while web app puts into storage .csv and .log files, but I dont see any of those as option under the Log Analytics > Workspace data sources > Storage account logs.
Is there a standard (Azure) way to consume, analyze and (preferably) automatically act upon content of those logs?
Answering my own question, based on the investigation I did so far, maybe it will help someone :)
Log Analytics doesn't digest the log data from web apps (I have no idea why, since they seem to be rather standard IIS logs)
The only reasonable way I found to consume and analyze log data is with Power BI. You can easily setup Storage account as the data source and then massage the data and get the reports you need.
So far I didn't come up with a way to generate alerts based on the content of logs without using tools like Splunk or Sumologic.
I have some VMs running on Azure Service. I'd like to redirect logs from them (Windows Event Logs and MS SQL server logs) to a specific log concentrator (like Graylog). For Windows logs, I'm using Nxlog (https://nxlog.co/docs/nxlog-ce/nxlog-reference-manual.html#quickstart_windows). However, for specific (PaaS) applications such as SQL Server (PaaS in general) Nxlog does not apply.
Is there a way to redirect logs (VMs and PaaS) just using Azure (web) tools?
Most services keep their logs in a Storage Account so you can tap into that source and forward logs to your own centralized log database. You generally define the storage account at the place you enable diagnostics for the service.
Don't know what king of logs you are looking for in SQL DB, but for example the audit logs are saved in a storage account.
Azure Operations Management Suite (OMS) can ingest from dozens of services as well as custom logs. As itaysk mentioned, most services in Azure write service related diagnostic information to a storage account. It's really easy to ingest these from within OMS.
https://azure.microsoft.com/en-us/services/log-analytics/
For Azure Web Sites, you can use Application Insights and store custom metrics as well. There's also an option to continuously write these metrics to a storage account.
Here's a similar option for Azure SQL:
https://azure.microsoft.com/en-us/documentation/articles/sql-database-auditing-get-started/