glances_demo

README.md

docker build -t glances_demo .
docker run --rm glance_demo

Dockerfile

FROM python:3.10-buster

RUN pip install glances

RUN mkdir -p /app
COPY glances_demo.py /app/glances_demo.py

ENTRYPOINT [ "python", "/app/glances_demo.py" ]

glances_demo.py

import subprocess


def stream_glances_processlist(nmax=10):
    glances_proc = subprocess.Popen(
        ["glances", "--stdout", "processlist"], stdout=subprocess.PIPE, shell=False,
    )

    for n in range(nmax):
        output = glances_proc.stdout.readline()

        if output == b"" and glances_proc.poll() is not None:
            break
        if output:
            yield output.decode("utf-8").strip()

    glances_proc.terminate()


list(map(print, stream_glances_processlist(nmax=3)))