woahbase/alpine-netdata repository overview

⁠Alpine-Netdata⁠

⁠Container for Alpine Linux + S6 + Netdata

This image⁠ serves as a host or container monitor using Netdata⁠. Usually coupled with my alpine-influxdb⁠ image which has the OpenTSDB listener enabled to collect the metrics, and alpine-grafana⁠ to visualize the metrics.

Based on Alpine Linux⁠ from my alpine-s6⁠ image with the s6⁠ init system overlayed⁠ in it.

Auto updated according to the github⁠ releases.

The image is tagged respectively for the following architectures,

• armhf
• x86_64 ( retagged as the latest )

armhf builds have embedded binfmt_misc support and contain the qemu-user-static⁠ binary that allows for running it also inside an x64 environment that has it.

⁠Get the Image

Pull the image for your architecture it's already available from Docker Hub.

# make pull
docker pull woahbase/alpine-netdata:x86_64

⁠Run

If you want to run images for other architectures, you will need to have binfmt support configured for your machine. multiarch⁠, has made it easy for us containing that into a docker container.

# make regbinfmt
docker run --rm --privileged multiarch/qemu-user-static:register --reset

Without the above, you can still run the image that is made for your architecture, e.g for an x86_64 machine..

This image already has a user netdata configured to drop privileges to the passed PUID/PGID which is ideal if its used to run in non-root mode. That way you only need to specify the values at runtime and pass the -u netdata if need be. (run id in your terminal to see your own PUID/PGID values.)

Running make starts the host monitor service.

Configs are read from /etc/netdata/netdata.conf. Use the default or mount your own here. The example below has the /proc and /sys mount and privilege to monitor the host.

# make
docker run --rm -it \
  --cap-add SYS_PTRACE \
  --name docker_netdata --hostname netdata \
  -e PGID=100 -e PUID=1000 \
  -p 19999:19999
  -v /etc/hosts:/etc/hosts:ro \
  -v /etc/localtime:/etc/localtime:ro \
  -v /proc:/host/proc:ro \
  -v /sys:/host/sys:ro \
  -v netdata.conf:/etc/netdata/netdata.conf \
  woahbase/alpine-netdata:x86_64

Stop the container with a timeout, (defaults to 2 seconds)

# make stop
docker stop -t 2 docker_netdata

Removes the container, (always better to stop it first and -f only when needed most)

# make rm
docker rm -f docker_netdata

Restart the container with

# make restart
docker restart docker_netdata

⁠Shell access

Get a shell inside a already running container,

# make shell
docker exec -it docker_netdata /bin/bash

set user or login as root,

# make rshell
docker exec -u root -it docker_netdata /bin/bash

To check logs of a running container in real time

# make logs
docker logs -f docker_netdata

⁠Development

If you have the repository access, you can clone and build the image yourself for your own system, and can push after.

⁠Setup

Before you clone the repo⁠, you must have Git⁠, GNU make⁠, and Docker⁠ setup on the machine.

git clone https://github.com/woahbase/alpine-netdata
cd alpine-netdata

You can always skip installing make but you will have to type the whole docker commands then instead of using the sweet make targets.

⁠Build

You need to have binfmt_misc configured in your system to be able to build images for other architectures.

Otherwise to locally build the image for your system. [ARCH defaults to x86_64, need to be explicit when building for other architectures.]

# make ARCH=x86_64 build
# sets up binfmt if not x86_64
docker build --rm --compress --force-rm \
  --no-cache=true --pull \
  -f ./Dockerfile_x86_64 \
  --build-arg ARCH=x86_64 \
  --build-arg DOCKERSRC=alpine-s6 \
  --build-arg PGID=1000 \
  --build-arg PUID=1000 \
  --build-arg USERNAME=woahbase \
  -t woahbase/alpine-netdata:x86_64 \
  .

It may take a bit of time to start it. To check if its working..

# make ARCH=x86_64 test
docker run --rm -it \
  --name docker_netdata --hostname netdata \
  -e PGID=1000 -e PUID=1000 \
  woahbase/alpine-netdata:x86_64 \
  sh -ec 'netdata -V'

And finally, if you have push access,

# make ARCH=x86_64 push
docker push woahbase/alpine-netdata:x86_64

⁠Maintenance

Sources at Github⁠. Built at Travis-CI.org⁠ (armhf / x64 builds). Images at Docker hub⁠. Metadata at Microbadger⁠.

Maintained by WOAHBase⁠.