[SUPPORT] Getting logs from a running container

[sbodapati-de]

Hi , i have three rest APIs , one to create a container and return container id , second one to exec a command and the third one to stream logs when container id is passed ,

GET setup/:image_name
GET run/:container_id
GET logs/:container_id

for the third API i am using docker.getContainer -> container.logs -> container.modem.demuxStream and am passing a writeable nodejs stream at stdout and stderr for sending back the logs.

I'm somehow not able to access the logs , but , if the writeable stream is passed during exec to container.modem.demuxStream , everything works fine.

How can i access logs after exec from a running container, given the container id?

[laurensV]

I have the same question: need to access logs from an already running container with already running execs.. any ideas on how to achieve this?

[AndreasHeine]

this is how i access the logs:

export async function getContainerLogs(id: string): Promise<string> {
    const c = await docker.getContainer(id)
    const data: Buffer = await c.logs({
        "stdout": true,
        "tail": "all",
        "timestamps": true
    })
    return data.toString("utf-8")
}

https://docs.docker.com/engine/api/v1.37/#tag/Container/operation/ContainerLogs

guess you use follow = true ?