Docker ERROR: ld.so: LD_PRELOAD cannot be preloaded

[aledevops1]

I am currently trying to set my docker image with the Dynatrace OneAgent as per the instructions, but I am getting an ERROR ld.so.

Below is my dockerfile

FROM node:20-slim

# Add our code

ADD . /

RUN npm install --production

COPY --from=xxxxx.live.dynatrace.com/linux/oneagent-codemodules:nodejs / /

ENV LD_PRELOAD=/opt/dynatrace/oneagent/agent/lib64/liboneagentproc.so

# Run the app.

CMD ["npm", "start"]

[islam_zidan]

Hello,

You need to make sure that you have the below:

• Your Docker environment must allow your OneAgent container to run in privileged mode.

• The /opt directory must exist on the host where you deploy your OneAgent container.

Please check the below document for further details

https://www.dynatrace.com/support/help/shortlink/oneagent-docker

BR,

Islam

[aledevops1]

I am running base on this document https://www.dynatrace.com/support/help/setup-and-configuration/setup-on-container-platforms/docker/s...

and this is the error I get inside the container

2023-06-22 18:50:32 ERROR: ld.so: object '/opt/dynatrace/oneagent/agent/lib64/liboneagentproc.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
2023-06-22 18:50:32 ERROR: ld.so: object '/opt/dynatrace/oneagent/agent/lib64/liboneagentproc.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
2023-06-22 18:50:32 ERROR: ld.so: object '/opt/dynatrace/oneagent/agent/lib64/liboneagentproc.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
2023-06-22 18:50:33 ERROR: ld.so: object '/opt/dynatrace/oneagent/agent/lib64/liboneagentproc.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
2023-06-22 18:50:33 ERROR: ld.so: object '/opt/dynatrace/oneagent/agent/lib64/liboneagentproc.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.

[aledevops1]

Also this is the docker run command I am running

docker run --privileged -p 3000:3000 -e SENDGRID_API_KEY=off -e NODE_ENV=production -e ELEPHANT_URL=postgres://topsy.db.elephantsql.com/ppp villan-api

[islam_zidan]

Did you completed the login step without any issue, it should be as below :

docker login xxxxx.live.dynatrace.com -u xxxxx

Then you should be asked for the Paas token

[aledevops1]

I did do the docker log in, and used the Pass token.

and as per the screenshot below the oneAgent file was installed in the container 

[islam_zidan]

Every thing seems normal for me, I think you need to open a support ticket for that.

[aledevops1 · Accepted solution]

Dynatrace support was able to help me with this issue.

As I am running my test in an Apple M2, I had to follow the ARM documentation

#Set up Dynatrce for ARM

ENV DT_API_URL=https://{environmentid}.live.dynatrace.com/api

ENV DT_ONEAGENT_TECHNOLOGY=nodejs

ENV DT_PAAS_TOKEN=Token from your account

RUN mkdir -p /opt/dynatrace/oneagent && ARCHIVE=$(mktemp) && wget -O $ARCHIVE "$DT_API_URL/v1/deployment/installer/agent/unix/paas/latest?Api-Token=$DT_PAAS_TOKEN&flavor=default&arch=arm&include=$DT_ONEAGENT_TECHNOLOGY" && unzip -o -d /opt/dynatrace/oneagent $ARCHIVE && rm -f $ARCHIVE

ENV LD_PRELOAD /opt/dynatrace/oneagent/agent/lib64/liboneagentproc.so

[aledevops1]

For ARM please follow steps in => https://www.dynatrace.com/support/help/setup-and-configuration/setup-on-container-platforms/kubernet...