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This article contains a brief introduction to centralized structured logging with Serilog and event viewing with ELK in eShopOnContainers. ELK is an acronym of ElasticSearch, LogStash and Kibana. This is one of the most used tools in the industry standards.
Wiring eshopOnContainers with ELK
eshopOnContainers is ready for work with ELK, you only need to setup the configuration parameter LogstashgUrl, in Serilog Section, for achieve this, you can do it modifing this parameter in every appsettings.json in every service, or via Environment Variable Serilog:LogstashUrl.
There is another option, a zero-configuration environment for testing the integration launching via docker-compose command, on the root directory of eshopOnContainers:
docker-compose -f docker-compose.yml -f docker-compose.override.yml -f docker-compose.elk.yml
Configuring Logstash index on Kibana
Once time you have started and configured your application, you only need to configure the logstash index on kibana. You can address to Kibana, with docker-compose setup is at http://localhost:5601
If you have accessed to kibana too early, you can see this error. It's normal, depending of your machine the kibana stack needs a bit of time to startup.
You can wait a bit and refresh the page, the first time you enter, you need to configure and index pattern, in the docker-compose configuration, the index pattern name is eshops-*.
With the index pattern configured, you can enter in the discover section and start viewing how the tool is recollecting the logging information.
