I am attempting to install a custom output Logstash plugin on Logstash 7.2; the plugin is written in Java based on the instructions found on this Logstash documentation page.
[root@ca3715a22ecb logstash-core]# logstash-plugin install file:///co360/plugins/co360-plugins.zip OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release. WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by org.jruby.util.SecurityHelper to field java.lang.reflect.Field.modifiers WARNING: Please consider reporting this to the maintainers of org.jruby.util.SecurityHelper WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Installing file: /co360/plugins/co360-plugins.zip Install successful
However, when I start Logstash, I get this error:
[ERROR] 2019-07-26 12:36:36.185 [main] Logstash - java.lang.IllegalStateException: Logstash stopped processing because of an error: (LoadError) Java plugin 'logstash-output-notify_plugin' does not contain a single jar file with the plugin's name and version
Java plugins only work if installed from the gem, however, this does not work for systems not connected to the internet.
# https://www.elastic.co/guide/en/logstash/current/java-filter-plugin.html#_installing_the_java_plugin_in_logstash_3 bin/logstash-plugin install --no-verify --local /path/to/javaPlugin.gem