Cannot run using openjdk:8-jdk-alpine image #5
Description
It seems like this currently cannot be run on Alpine. Most probable reason I have found so far is that Alpine uses musl instead of glibc.
$ cat Dockerfile
FROM openjdk:8-jdk-alpine
RUN mkdir -p /opt/cprof && wget -q -O- https://storage.googleapis.com/cloud-profiler/java/latest/profiler_java_agent.tar.gz | tar xzv -C /opt/cprof
WORKDIR /app
ADD Main.java .
RUN javac Main.java; jar cfve file.jar Main Main.class
RUN apk add --no-cache libc6-compat
CMD ["java", "-agentpath:/opt/cprof/profiler_java_agent.so=-cprof_service=javatest,-cprof_service_version=1.0.0", "-jar", "file.jar"]
$ cat Main.java
class Main {
public static void main(String[] args) {
while (true) {
try {
Thread.sleep(10);
} catch (Exception e) {
break;
}
System.out.println("Hello World!");
}
}
}
$ docker build -t foo . && docker run --rm foo
Sending build context to Docker daemon 73.32MB
Step 1/7 : FROM openjdk:8-jdk-alpine
---> 54ae553cb104
Step 2/7 : RUN mkdir -p /opt/cprof && wget -q -O- https://storage.googleapis.com/cloud-profiler/java/latest/profiler_java_agent.tar.gz | tar xzv -C /opt/cprof
---> Using cache
---> 1e272a02dc1d
Step 3/7 : WORKDIR /app
---> Using cache
---> eabb8027399c
Step 4/7 : ADD Main.java .
---> Using cache
---> d4d7d0d51f9c
Step 5/7 : RUN javac Main.java; jar cfve file.jar Main Main.class
---> Using cache
---> 8d9bb4741cfd
Step 6/7 : RUN apk add --no-cache libc6-compat
---> Using cache
---> c9cc1fd8e889
Step 7/7 : CMD ["java", "-agentpath:/opt/cprof/profiler_java_agent.so=-cprof_service=javatest,-cprof_service_version=1.0.0", "-jar", "file.jar"]
---> Using cache
---> 180f3ac16704
Successfully built 180f3ac16704
Successfully tagged foo:latest
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x0000000000076a96, pid=1, tid=0x00007ff076e81ae8
#
# JRE version: OpenJDK Runtime Environment (8.0_171-b11) (build 1.8.0_171-b11)
# Java VM: OpenJDK 64-Bit Server VM (25.171-b11 mixed mode linux-amd64 compressed oops)
# Derivative: IcedTea 3.8.0
# Distribution: Custom build (Wed Jun 13 18:28:11 UTC 2018)
# Problematic frame:
# C 0x0000000000076a96
#
# Core dump written. Default location: /app/core or core.1
#
# An error report file with more information is saved as:
# /app/hs_err_pid1.log
#
# If you would like to submit a bug report, please include
# instructions on how to reproduce the bug and visit:
# http://icedtea.classpath.org/bugzilla
#
I tried re-compiling the library to link against musl. In Dockerfile I had to make following changes:
- Replace
apt-get install ...withapk add build-base git autoconf automake libtool openssl-dev python zlib zlib-dev - Change
... && ldconfig && ...to... && ldconfig / && ....
That was enough to get the build environment up, but unfortunately the build itself fails due to some musl & glibc incompatibilities.
src/cloud_env.cc: In function 'const char* cloud::profiler::{anonymous}::Getenv(const string&)':
src/cloud_env.cc:73:37: error: '__secure_getenv' was not declared in this scope
return __secure_getenv(var.c_str());
^
src/threads.cc: In function 'void* cloud::profiler::{anonymous}::CreateTimer(pid_t)':
src/threads.cc:31:23: error: 'SIGEV_THREAD_ID' was not declared in this scope
sevp.sigev_notify = SIGEV_THREAD_ID;
^~~~~~~~~~~~~~~
src/threads.cc:32:8: error: 'struct sigevent' has no member named '_sigev_un'; did you mean 'sigevent'?
sevp._sigev_un._tid = tid;
^~~~~~~~~
__secure_getenv should be fairly easy to fix with fallback to getenv if needed, but I'm not sure about the thread signaling stuff.