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I'm running Container Linux by CoreOS 1618.0.0 (Ladybug).

with rkt Version: 1.29.0

I created a systemd service file to run a docker nagios image:

[Unit]
Description=Nagios
Requires=network-online.target local-fs.target
After=network-online.target local-fs.target

[Install]
WantedBy=multi-user.target

[Service]
Slice=machine.slice
ExecStart=/usr/bin/rkt run --port=80-tcp:8018 --insecure-options=image --volume volume-var-log-apache2,kind=host,source=/mnt/storage/nagios/apache2-log --volume volume-usr-share-snmp-mibs,kind=host,source=/mnt/storage/nagios/snmp-mibs --volume volume-opt-nagiosgraph-etc,kind=host,source=/mnt/storage/nagios/nagiosgraph/etc --volume volume-opt-nagiosgraph-var,kind=host,source=/mnt/storage/nagios/nagiosgraph/var --volume volume-opt-nagios-libexec,kind=host,source=/mnt/storage/nagios/nagios/libexec --volume volume-opt-nagios-var,kind=host,source=/mnt/storage/nagios/etc,readOnly=false --volume volume-opt-nagios-etc,kind=host,source=/mnt/storage/nagios/var,readOnly=false --volume volume-opt-custom-nagios-plugins,kind=host,source=/mnt/storage/nagios/custom-plugins docker://jasonrivers/nagios:latest
KillMode=mixed
Restart=always
RestartSec=0
ExecStopPost=/usr/bin/rkt gc --mark-only

now the problem is that the mounted parittions don't get populated with the relevant image files.

usually what I do is to extract the image itself and copy the relevant files manually.

the question is... is there another?

hopefully I missed a rkt parameter that fills the relevant mounted directories with the files in the docker image in the mounted locations

any ideas ?

ufk
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1 Answers1

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You should not expect to see the volume automatically populated with whatever files exist in the image at that particular mount point. In fact the opposite happens, the (presumably empty) volume hides what's in the image. See this: https://github.com/appc/spec/blob/master/spec/ace.md#volume-setup

So, if you want to pre-populate the volumes with files from the image, I believe you're doing the right thing by extracting the image manually.

Iulian Dogariu
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