elastic
Logstash `6.8.11` doesn't start if it started from a symbolic link
- Version: 6.8.11
- Operating System: Linux, maybe MacOSX
- Steps to Reproduce:
run docker with
Dockerfile
FROM logstash:6.8.11
USER logstash
RUN ln -s /usr/share/logstash /tmp/log
RUN echo "input { stdin {} } output { stdout {} }" > cfg
# uncomment these to make "docker build ." work
#RUN rm -r ./vendor/bundle/jruby/2.5.0/gems/ffi-1.13.1-java/lib/ffi
#RUN rm ./vendor/bundle/jruby/2.5.0/gems/ffi-1.13.1-java/lib/ffi.rb
RUN /tmp/log/bin/logstash -f cfg
Description
Logstash 6.8.11 ships with JRuby 9.2.7.0 and ffi gem 1.13.1 when launched with a symbolic link fails with:
[2020-08-13T15:21:29,762][FATAL][logstash.runner ] An unexpected error occurred! {:error=>#<NameError: uninitialized constant LibC::FFI>, :backtrace=>[
"org/jruby/RubyModule.java:3742:in `const_missing'",
"/usr/share/logstash/logstash-core/lib/logstash/util/prctl.rb:4:in `<module:LibC>'",
"/usr/share/logstash/logstash-core/lib/logstash/util/prctl.rb:2:in `<main>'",
"org/jruby/RubyKernel.java:987:in `require'",
"/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'",
"/usr/share/logstash/logstash-core/lib/logstash/util.rb:21:in `set_thread_name'",
"/usr/share/logstash/logstash-core/lib/logstash/runner.rb:306:in `execute'",
"/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'",
"/usr/share/logstash/logstash-core/lib/logstash/runner.rb:237:in `run'",
"/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:132:in `run'",
"/home/andrea/workspace/elastic_products/my_ls/lib/bootstrap/environment.rb:73:in `<main>'"
the things to note is:
- Logstash
6.8.10doesn't manifest the problem, it ships with JRuby9.2.7.0and ffi gem1.11.3 - Logstash
7.8.1doesn't manifest the problem, it ships with JRuby9.2.11.1and ffi gem1.13.1and they doesn't manifest the problem.
Removing the gem make Logstash starts happily.
I´ve got a similiar behavior for logstash 6.8.13. Version: 6.8.13 Operating System: Linux Steps to Reproduce:
- extracted logstash from tar file
- created a sym link to new dir
lrwxrwxrwx 1 elk elk 29 Jan 9 11:47 logstash -> /products/elk/logstash-6.3.2/
drwxrwxr-x 14 elk elk 4096 Sep 6 2018 logstash-6.3.2
drwxr-xr-x 13 elk elk 4096 Jan 8 16:12 logstash-6.8.13
- after starting the new logstash instance, I got this error:
[2021-01-09T11:24:12,800][FATAL][logstash.runner ] An unexpected error occurred! {:error=>#<NameError: uninitialized constant LibC::FFI>, :backtrace=>["org/jruby/RubyModule.java
:3742:in `const_missing'", "/products/elk/logstash-6.8.13/logstash-core/lib/logstash/util/prctl.rb:4:in `<module:LibC>'", "/products/elk/logstash-6.8.13/logstash-core/lib/logstash/util/p
rctl.rb:2:in `<main>'", "org/jruby/RubyKernel.java:987:in `require'", "/products/elk/logstash-6.8.13/vendor/bundle/jruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'", "/pro
ducts/elk/logstash-6.8.13/logstash-core/lib/logstash/util.rb:1:in `(root)'", "/products/elk/logstash-6.8.13/logstash-core/lib/logstash/util.rb:21:in `set_thread_name'", "/products/elk/lo
gstash-6.8.13/logstash-core/lib/logstash/runner.rb:306:in `execute'", "/products/elk/logstash-6.8.13/vendor/bundle/jruby/2.5.0/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'", "/produ
cts/elk/logstash-6.8.13/logstash-core/lib/logstash/runner.rb:237:in `run'", "/products/elk/logstash/lib/bootstrap/environment.rb:73:in `<main>'"]}
[2021-01-09T11:24:12,802][ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit
Same behavior on 6.8.22, we're also using sym links to manage releases.
Can confirm that removing the gem (vendor/bundle/jruby/2.5.0/gems/ffi-1.15.3-java) helps and logstash is able to start. No idea what this could break though.
Seeing the same behavior on 6.8.23. We also use symlinks to manage releases. Also confirmed that removing the ffi gem allowed logstash to start. No idea the impact that has.
