Logstash container stuck in a restart loop

[gorbroth]

Hi,

My new logstash docker container is stuck in a restart loop .

Error in logs -

        Does it try to require a relative path? That's been removed in Ruby 1.9.
        uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:59:in `require':
        It seems your ruby installation is missing psych (for YAML output).
        To eliminate this warning, please install libyaml and reinstall your ruby.
        [ERROR] 2021-04-27 09:21:00.555 [main] Logstash - java.lang.IllegalStateException: Logstash stopped processing because of an error: (GemspecError) There was a LoadError while loading logstash-core.gemspec:
        load error: psych -- java.lang.RuntimeException: BUG: we can not copy embedded jar to temp directory from
          /usr/share/logstash/logstash-core/logstash-core.gemspec:1:in `block in (root)'
         
        Does it try to require a relative path? That's been removed in Ruby 1.9.

I tried what was suggested in the below discussions and checked the /tmp permissions(PFB)

Logstash6.5: It seems your ruby installation is missing psych - Elastic Stack / Logstash - Discuss the Elastic Stack
Logstash起動時のエラー - Elastic In Your Native Tongue / 日本語による質問・議論はこちら - Discuss the Elastic Stack

drwxrwxrwt. 14 root root 360 Apr 27 13:09 tmp
ruby -v
ruby 2.0.0p648 (2015-12-16) [x86_64-linux]

I'm trying to run the container with a non privilege user , should that be an issue ? Cause it worked when I ran it as a root user . However with the current permissions it should work for all users. It'd be really helpful if someone could help me

Thanks