How do I get container logs?
Docker provides two types of log commands to view logs. The docker logs command shows the log messages generated inside the container, while the docker service logs command shows the logs generated by a service within the container.By default, the Docker containers log files are stored in /var/lib/docker/containers/<containerId> dir. In addition, we can also redirect the Docker containers logs to some other file.The Docker daemon log can be viewed by using one of the following methods:

  1. By running journalctl -u docker. service on Linux systems using systemctl.
  2. /var/log/messages , /var/log/daemon. log , or /var/log/docker. log on older Linux systems.

How do I view docker desktop logs : You can use the Console Log Query to search logs, filter the results in various ways, and create reports. You can also find the logs for the internal components included in Docker Desktop at $HOME/.docker/desktop/log/ .

How to collect logs from docker container

Docker has a dedicated command which lists container logs. The docker logs command. The flow will usually involve you checking your running containers with docker ps, then check the logs by using a container's ID. This command will list all logs for the specified container.

How do you see pod or container logs : Information about the containers and pods on your cluster may be obtained using the kubectl logs command. These logs allow you to know the performance of your applications, whether they are failing or healthy, and are particularly useful for debugging and troubleshooting purposes.

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's logged and the format of the log depends almost entirely on the container's endpoint command.

How to Redirect Docker Logs to a Single File

  1. Step 1: Set Up a Centralized Logging System.
  2. Step 2: Configure Docker to Send Logs to Logstash.
  3. Step 3: Start Logstash.
  4. Step 4: View Your Docker Logs in Kibana.
  5. Step 5: Analyze Your Docker Logs.
  6. But There Is More.
  7. Viewing Container Logs.
  8. Redirect Docker Logs to File.

How to check docker container live logs

Output all logs for a detached, running container

The docker logs command will output all the logs for the container. If you add the –follow (or -f) option, you can see all the previous logs and tail the logs, allowing you to monitor its ongoing activity.To filter logs based on time, we can use two flags with the docker-compose logs command: –since and –until . The –since flag is used to view the logs that were generated after a specified time period. In contrast, –until flag is used to view the logs that were produced before a specified time period.You can see the logs of a particular container by running the command kubectl logs <container name> . Here's an example for Nginx logs generated in a container. If you want to access logs of a crashed instance, you can use –previous . This method works for clusters with a small number of containers and instances.

You can see the logs of a particular container by running the command kubectl logs <container name> . Here's an example for Nginx logs generated in a container. If you want to access logs of a crashed instance, you can use –previous . This method works for clusters with a small number of containers and instances.

How do I get all logs from a pod : Using kubectl

  1. –previous=true will show logs from terminated pods, useful if you want to view logs from containers that have crashed/errored.
  2. –all-containers=true useful if you have multiple containers in a pod, or you can use -c to select a specific container.

How to log on docker : docker login requires you to use sudo or be root , except when: Connecting to a remote daemon, such as a docker-machine provisioned docker engine . The user is added to the docker group. This will impact the security of your system; the docker group is root equivalent.

How do I copy logs from a container

Solution

  1. To copy a file from the local file system to a container, run the command for Docker container or Kubernetes pod, respectively: docker cp <src-path> <container>:<dest-path>
  2. To copy a file from the container to the local file system, use: docker cp <container>:<src-path> <local-dest-path>


The docker cp command allows you to copy files and directories from a container's file system to your local machine, whether the container is running or stopped. Where: src_path is the path on the container of the file you want to copy. container is the name or the ID of the container you want to copy files from.Using kubectl logs Command

We can use this command to retrieve logs of a specific container running in a pod. In this command, we'll replace <pod-name> with the name of the pod and <container-name> with the name of the container whose logs we want to view.

What are the logs inside docker container : Docker Container Logs​

Container logs primarily consist of the standard output (stdout) and standard error (stderr) streams of the processes running inside the container. These logs can be accessed using the docker logs [CONTAINER_ID or CONTAINER_NAME] command, which retrieves the logs for a specific container.