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is it possible to use multiple logging drivers for the same container - say fluentd and json?
Thank you.
658
It's ok to have multiple processes, but to get the most benefit out of Docker, avoid one container being responsible for multiple aspects of your overall application. You can connect multiple containers using user-defined networks and shared volumes.
Docker collects logs from the standard output and error (stdout and stderr) streams of the foreground processes of your containers. These logs are sent to the selected logging driver—more on these below—to be stored persistently.
The docker logs command shows information logged by a running container. The docker service logs command shows information logged by all containers participating in a service. The information that is logged and the format of the log depends almost entirely on the container's endpoint command.
There are two levels of aggregation in Docker logging. One refers to the logs from inside the container in your Dockerized application, and the second refers to the logs from the host servers (that is system logs or Docker daemon logs), which are generally located in /var/log .
As of 18.03, Docker Engine Enterprise(EE) supports multiple log drivers, but it is not in the Community Edition(CE):
https://docs.docker.com/ee/engine/release-notes/#18031-ee-1-2018-06-27
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No, you can only specify a single logging driver/container.
To have separate sinks for your logs, you'd have to rely on something like fluentd to receive the logs (or read the json log files) and configure a pipeline to distribute them.
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