Logstash - LoadError: Could not load FFI Provider: (NotImplementedError) FFI not available: null

If you get error "LoadError: Could not load FFI Provider" while running logstash(ver 1.4.2) daemon on CentOS like:


[root@psj ELK]# cat /var/log/logstash/logstash.err
LoadError: Could not load FFI Provider: (NotImplementedError) FFI not available: null
 See http://jira.codehaus.org/browse/JRUBY-4583
  require at org/jruby/RubyKernel.java:1085
  require at file:/opt/logstash/vendor/jar/jruby-complete-1.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
   (root) at file:/opt/logstash/vendor/jar/jruby-complete-1.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/ffi/ffi.rb:69
  require at org/jruby/RubyKernel.java:1085
   (root) at file:/opt/logstash/vendor/jar/jruby-complete-1.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:1
  require at file:/opt/logstash/vendor/jar/jruby-complete-1.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
  require at org/jruby/RubyKernel.java:1085
   (root) at file:/opt/logstash/vendor/jar/jruby-complete-1.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/ffi.rb:1
   (root) at file:/opt/logstash/vendor/jar/jruby-complete-1.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:1
  require at file:/opt/logstash/vendor/jar/jruby-complete-1.7.11.jar!/META-INF/jruby.home/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:55
  require at org/jruby/RubyKernel.java:1085
     LibC at /opt/logstash/lib/logstash/util/prctl.rb:4
   (root) at /opt/logstash/lib/logstash/util/prctl.rb:3
     main at /opt/logstash/lib/logstash/runner.rb:79
   (root) at /opt/logstash/lib/logstash/runner.rb:215


Please do the following:

Modify "LS_JAVA_OPTS" option in /etc/sysconfig/logstash file  as given below:

#vim /etc/sysconfig/logstash
...
#LS_JAVA_OPTS="-Djava.io.tmpdir=$HOME"
#LS_JAVA_OPTS="-Djava.net.preferIPv4Stack=true -Djava.io.tmpdir=$HOME"
LS_JAVA_OPTS="-Djava.net.preferIPv4Stack=true -Djava.io.tmpdir=/var/lib/logstash"
...

"Djava.io.tmpdir" can be set to any directory of your preference instead of "/var/lib/logstash".

[root@psj ELK]# service logstash status
logstash is running