Azure blob fuse via a proxy

[thekoolestkat]

Which version of blobfuse was used? Version 2.2.1

Which OS distribution and version are you using? RedHat 8.9

If relevant, please share your mount command.

What was the issue encountered? I'm having issues with Proxy and azure storage fuse 2.2.1 trying to mount a blob store via proxy. I can see the connection going out to do a version check but it never attempts to connect to azure storage blob. When I disable version check it doesn't even try to go out. If I disable proxy settings the connections works perfectly.

Have you found a mitigation/solution?No

Please share logs if available.

[souravgupta-msft]

Hi @thekoolestkat. Thanks for reaching out. Can you share your config file and mount command? You can mention the proxy in your config file in either http-proxy or https-proxy under azstorage section.

[thekoolestkat]

Hi Thanks for the prompt reply the mount command i used was "blobfuse2 mount ./blobtestrhel --config-file=./fuse-config.yaml" i also tried "blobfuse2 mount ./blobtestrhel --config-file=./fuse-config.yaml --disable-version-check=true" the proxy settings are on the linux host not held in the config file.

Config File:

logging:

type: syslog

level: log_debug

components:

• libfuse

• file_cache

• attr_cache

• azstorage

libfuse:

attribute-expiration-sec: 120

entry-expiration-sec: 120

negative-entry-expiration-sec: 240

file_cache:

path: /mnt/ramdisk/blobtestrhel

timeout-sec: 120

max-size-mb: 4096

attr_cache:

timeout-sec: 7200

azstorage:

type: block

account-name: blobtestrhel

sas:

endpoint: https://blobtestrhel.blob.core.windows.net/

mode: sas

container: data

[souravgupta-msft]

Can you specify the proxy in environment variable http_proxy or https_proxy and retry mounting.

[thekoolestkat]

Hi Please see below: [xxxx-xxx@dvxxxxx002 ~]$ echo $http_proxy

http://xxx.xx.xx.69:8080/

[xxxx-xxx@dvxxxxx002 ~]$ echo $https_proxy

http://xxx.xx.xx.69:8080/

[xxxx-xxx@dvxxxxx002 ~]$

[souravgupta-msft]

@thekoolestkat, can you retry mounting after setting either of the environment variable. Please share the debug logs if the mount is failing.

[thekoolestkat]

Hi thanks for the reply I have had the environment variables set to the proxy. Can you confirm what log files are you after ?/var/log/blobfuse2.log Thanks,

[souravgupta-msft]

Yes, please share the logs in /var/log/blobfuse2.log

[thekoolestkat]

Hi please find attached the log file blobfuse2.log

[souravgupta-msft]

proxyconnect tcp: dial tcp: lookup https://xxx.xx.xxx.42: no such host Is the proxy configured correctly? Can you test the connectivity using wget or curl command? Also please update the blobfuse2 version to 2.3.0.

[thekoolestkat]

Hi Thanks for getting back to me so I tried few things below: Curl Prior to upgrade with No Porxy server

Curl prior to upgrade with a proxy server configured

Mount Prior to upgrade no proxy server configured

Mount Prior to upgrade with a proxy server configured

Upgraded to 2.3.0 mount with proxy still fails with Mount

Blobfuse2.log file attached

blobfuse2-22-5-24.log

[souravgupta-msft]

@thekoolestkat, sorry for replying late. I was able to setup proxy and replicate this error. It is a bug in the code, and we will fix this in our next release. For now, as temporary mitigation, you can just set https_proxy as xxx.xx.xx.42 (without protocol).