container-insights

Dockerfile

#
# container-insights
#
# Send the docker container status to Azure Application Insight on every minute.
#
# Run it:
#   docker run -d --privileged --restart always \
#     -v /var/run/docker.sock:/var/run/docker.sock \
#     -e IKEY=12345678-1234-1234-1234-1234567890xx \
#     -e PREFIX=docker-01 \
#     lijunle/container-insights
#
# Environment variable:
#   IKEY: The Instrumentation key for the Application Insight instance.
#   PREFIX: The prefix of the metric name.
#

FROM alpine
LABEL maintainer="Junle Li <lijunle@gmail.com>"

ENV IKEY=
ENV PREFIX=docker

WORKDIR /app

RUN apk add --no-cache curl jq findutils
COPY ./insights.sh ./
ENTRYPOINT [ "sh", "./insights.sh" ]

insights.sh

#!/bin/sh

while true
do
    date
    curl --silent --unix-socket /var/run/docker.sock http://localhost/containers/json \
        | jq ".[].Names[0]" \
        | xargs -i curl --silent -d \
            '{"name":"MetricData","time":"'`date +%Y-%m-%dT%H:%M:%S%z`'","iKey":"'"$IKEY"'",
                "data":{"baseType":"MetricData","baseData":{"metrics":[{"name":"'"$PREFIX"'{}","value":1}]}}}
            ' https://dc.services.visualstudio.com/v2/track

    # Wait one minute
    echo ''
    sleep 60s
done