Installing on Alpine 3.5 fails to enable extension

[carflo]

To reproduce run docker build with the following Dockerfile:

FROM alpine:3.5

RUN apk --no-cache add \
        bash curl php5 libc6-compat \
        && ln -s /etc/php5 /etc/php

ENV DDTRACE_VERSION=0.16.1

RUN cd $(mktemp -d) \
    && curl -Lo datadog-php-tracer.apk https://github.com/DataDog/dd-trace-php/releases/download/${DDTRACE_VERSION}/datadog-php-tracer_${DDTRACE_VERSION}_noarch.apk \
    && apk add datadog-php-tracer.apk --allow-untrusted \
    && rm datadog-php-tracer.apk

Error:

PHP Warning:  PHP Startup: Unable to load dynamic library '/opt/datadog-php/extensions/ddtrace-20131106.so' - Error relocating /opt/datadog-php/extensions/ddtrace-20131106.so: backtrace: symbol not found in Unknown on line 0

[labbati]

Hi @carflo thanks for reporting this issue. We commit to look into this ASAP! In the meantime if you find any workaround/fix please post it here!

[tatianajiselle]

Hey there -- were experiencing the same issue here using php-Alpine

the .so package is there however... i started noticing this issue after bumping package version from 0.16.1 to 0.27.2

NOTICE: PHP message: PHP Warning: PHP Startup: Unable to load dynamic library 'ddtrace.so' (tried: /usr/lib/php7/modules/ddtrace.so (Error relocating /usr/lib/php7/modules/ddtrace.so: _zval_ptr_dtor: symbol not found), /usr/lib/php7/modules/ddtrace.so.so (Error loading shared library /usr/lib/php7/modules/ddtrace.so.so: No such file or directory)) in Unknown on line 0

[SammyK]

Hey @tatianajiselle! Did you install the tracer via the .apk package?

$ apk add datadog-php-tracer_0.27.2_noarch.apk --allow-untrusted

Installing it via a package should link everything properly. :)

[tatianajiselle]

havent had a moment! will try this and get back to you thanks sammy...

[morrisonlevi]

Have the recent .apk packages been working for you on Alpine Linux, @tatianajiselle and @carflo? Edit: My apologies; I must have misread something yesterday when I posted this; you are already installing via apk.

[jason-linthwaite]

My installation has just stopped working after updating to not use a previously cached version in my docker.
anyone else getting issues?

I'm using

FROM php:7.2-fpm-alpine

and

RUN curl -L -s https://github.com/DataDog/dd-trace-php/releases/download/0.36.0/datadog-php-tracer_0.36.0_noarch.apk --output datadog-php-tracer.apk
RUN apk add datadog-php-tracer.apk --allow-untrusted

Just started returning error

Failed enabling ddtrace extension

The extension has been installed but couldn't be enabled

[morrisonlevi]

As an update, the PR from February fixes builds from source on Alpine. There is still a packaging issue which can be tracked in PR #774.

[labbati]

Answering to this own issue very late.

@jason-linthwaite
We need more info as this is working for me. Can you provide a sample Dockerfile if you still experience the issue?

FROM php:7.2-fpm-alpine

RUN apk --no-cache add \
        bash curl libc6-compat libexecinfo

ENV DDTRACE_VERSION=0.36.0
ENV DDTRACE_DOWNLOAD_URL https://github.com/DataDog/dd-trace-php/releases/download/${DDTRACE_VERSION}/datadog-php-tracer_${DDTRACE_VERSION}_noarch.apk

RUN curl -Lo datadog-php-tracer.apk ${DDTRACE_DOWNLOAD_URL} \
    && apk add datadog-php-tracer.apk --allow-untrusted

CMD bash

@carflo

I am still looking into this.

[labbati]

@carflo I have a development build that I'd ask you to test, if you have a minute. Please note that this is not production ready and it only supports 5.6.

I slightly modified your Dockerfile to include this development build.

FROM alpine:3.5

RUN apk --no-cache add bash curl php5 libexecinfo

RUN cd $(mktemp -d) \
    && curl -Lo datadog-php-tracer.apk https://238577-119990860-gh.circle-artifacts.com/0/datadog-php-tracer_1.0.0-nightly_noarch.apk \
    && apk add datadog-php-tracer.apk --allow-untrusted \
    && rm datadog-php-tracer.apk

Of course I tested in the Dockerfile above, but if this was a snippet of a larger Dockerfile I'd ask you to test in that one and confirm it works with no problems for you.

[carflo]

@labbati I updated my Dockerfile with your changes and it worked!

ddtrace
### Extension enabled successfully

[labbati]

This is a very good news. We are currently actively working on #774 that will not be included in the next release (as it targets the next few days) but surely the following one.

[labbati]

Change has been merged and it will be included in 0.50.0