| Re: [mosquitto-dev] Unable to open pwfile when using mosquitto Docker image |
The important part in what you've shown is:
> /mosquitto/data # ls -la
> total 4
> d--------- 1 mosquitt mosquitt 46 Mar 11 05:52 .
> drwxr-xr-x 1 mosquitt mosquitt 26 Nov 17 01:20 ..
> ---------- 1 mosquitt mosquitt 121 Mar 11 05:52
mosquitto.password_file
>
This shows that while the file is owned by the mosquitto user and group,
neither of them have permission to read the file (this is shown by all
the - chars at the start of the listing.
Have you run something like `chmod 000 mosquitto.password_file` on the
host os?
You should probable run `chmod 600 mosquitto.password_file` to grant
read/write permission to the file owner.
Ben
On 11/03/2022 10:11, Giles Roadnight wrote:
> Many thanks for that explanation. I hadn't realised that a docker image
> expects certain volumes, I thought you could replace any path with any path.
>
> Anyway, I am now running with:
>
> sudo docker run --rm -i -p 1883:1883 -v
> /volume1/mosquitto/config:/mosquitto/config -v
> /volume1/mosquitto/data:/mosquitto/data --name mosqTemp
> eclipse-mosquitto:latest
>
> but unfortunately I still get:
>
> 1646993206: mosquitto version 2.0.14 starting
> 1646993206: Config loaded from /mosquitto/config/mosquitto.conf.
> 1646993206: Error: Unable to open pwfile
> "/mosquitto/data/mosquitto.password_file".
> 1646993206: Error opening password file
> "/mosquitto/data/mosquitto.password_file".
>
> in the container I can now see the expected file:
>
> /mosquitto/data # pwd
> /mosquitto/data
> /mosquitto/data # ls -la
> total 4
> d--------- 1 mosquitt mosquitt 46 Mar 11 05:52 .
> drwxr-xr-x 1 mosquitt mosquitt 26 Nov 17 01:20 ..
> ---------- 1 mosquitt mosquitt 121 Mar 11 05:52
> mosquitto.password_file
>
> Giles Roadnight
> http://giles.roadnight.name <http://giles.roadnight.name>
>
>
> On Fri, 11 Mar 2022 at 10:02, Norbert Heußer <norbert.heusser@xxxxxxxxxx
> <mailto:norbert.heusser@xxxxxxxxxx>> wrote:
>
> Hi Giles,
>
> the mosquitto Docker container is expecting two different volumes to
> be mounted in the container (as you might be able to check using the
> "docker image inspect mosquitto:latest“ and check for Volumes)
> 1. /mosquitto/config
> 2. /mosquitto/data
>
> If you simply try to mount your local /volume1/mosquitto to the
> internal /mosquitto still the subfolders config and data will not be
> visible in the container (as they are overloaded by the docker
> engine). This is a general pattern in docker engine: All specified
> volumes have to be mounted individually. You can’t simply mount the
> folder above.
>
> To fix your problem you would need to mount your local data and
> config individually into the container:
> sudo docker run --rm -i -p 1883:1883 -v
> /volume1/mosquitto/config:/mosquitto/config -v
> /volume1/mosquitto/data:/mosquitto/data eclipse-mosquitto:latest
>
> Hope this helps.
>
> BTW: Why are there two different folder ?
> Because the folder contain two different types of data. Config
> contains seldom modified data, which contains highly sensitive data
> like usernames and password (hashes). The data folder store
> temporary data and maybe modified very often. Using two different
> folders allows to use different backend storages (e.g. different
> RAID configs).
>
> Best,
> Norbert
>
>> Am 11.03.2022 um 07:01 schrieb Giles Roadnight
>> <giles.roadnight@xxxxxxxxx <mailto:giles.roadnight@xxxxxxxxx>>:
>>
>> Hi All
>>
>> I am trying to get mosquitto docker to work with a password file.
>> my run command:
>>
>> sudo docker run --rm -i -p 1883:1883
>> -v/volume1/mosquitto:/mosquitto eclipse-mosquitto:latest
>>
>> my config (/volume1/mosquitto/config/mosquitto.conf):
>>
>> listener 1883
>> password_file /mosquitto/data/mosquitto.password_file
>>
>> container file structure:
>>
>> volume1/
>> /config
>> /mosquitto.conf
>> /data
>> /mosquitto.password_file
>> /mqtt_passwd
>> (there are 2 copies of password at 2 different locations)
>>
>> Within the running container I can see the mqtt_passwd in
>> /mosquitto/ but the mosquitto.password_file is missing from
>> /mosquitto/data - I have no idea how that can happen.
>>
>> If I change my config to point to the password file at
>> /mosquitto/mqtt_passwd I get the same error:
>>
>> 1646978185: mosquitto version 2.0.14 starting
>> 1646978185: Config loaded from /mosquitto/config/mosquitto.conf.
>> 1646978185: Error: Unable to open pwfile "/mosquitto/mqtt_password".
>> 1646978185: Error opening password file "/mosquitto/mqtt_password".
>>
>> I am very new to docker and pretty new to linux so I am a bit
>> lost. Any help much appreciated.
>>
>> Giles Roadnight
>> http://giles.roadnight.name <http://giles.roadnight.name/>
>> _______________________________________________
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>
> --
> *Norbert Heußer*
> Senior Developer | Cedalo GmbH
> Email: norbert.heusser@xxxxxxxxxx <mailto:philip.ackermann@xxxxxxxxxx>
> Tel: +49 173 936 43 63
>
> Cedalo GmbH
> The company behind Eclipse Mosquitto and Eclipse Streamsheets
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>
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