# Logstash downloadable filter plugins are not found by Logstash
**URL:** https://discuss.elastic.co/t/logstash-downloadable-filter-plugins-are-not-found-by-logstash/127539
**Category:** Logstash
**Created:** [April 10, 2018, 7:35pm UTC](https://discuss.elastic.co/t/logstash-downloadable-filter-plugins-are-not-found-by-logstash/127539 "2018-04-10T19:35:51Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@motts](https://discuss.elastic.co/u/motts)
#### Post date: [April 10, 2018, 7:35pm UTC](https://discuss.elastic.co/t/logstash-downloadable-filter-plugins-are-not-found-by-logstash/127539/1 "2018-04-10T19:35:51Z")
Hello,
I am using Logstash 6.2 currently and I am trying to get any downloadable filters to work, but when starting Logstash, I get an error stating that all of the downloaded filters cannot be found. Here is an example for the Alter plugin:
`[ERROR][logstash.agent] Failed to execute action {:action=>LogStash::PipelineAction::Create/pipeline_id:main, :exception=>"LogStash::PluginLoadingError", :message=>"Couldn't find any filter plugin named 'alter'. Are you sure this is correct? Trying to load the alter filter plugin resulted in this error: no such file to load -- logstash/filters/alter", :backtrace=>["/usr/share/logstash/logstash-core/lib/logstash/plugins/registry.rb:192:in lookup_pipeline_plugin'", "/usr/share/logstash/logstash-core/lib/logstash/plugin.rb:140:inlookup'", "/usr/share/logstash/logstash-core/lib/logstash/plugins/plugin_factory.rb:81:in plugin'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:112:inplugin'", "(eval):227:in '", "org/jruby/RubyKernel.java:994:ineval'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:84:in initialize'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:169:ininitialize'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline_action/create.rb:40:in execute'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:315:inblock in converge_state'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:141:in with_pipelines'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:312:inblock in converge_state'", "org/jruby/RubyArray.java:1734:in each'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:299:inconverge_state'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:166:in block in converge_state_and_update'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:141:inwith_pipelines'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:164:in converge_state_and_update'", "/usr/share/logstash/logstash-core/lib/logstash/runner.rb:458:inblock in trap_sighup'", "org/jruby/RubyArray.java:1734:in each'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/trap.rb:46:insimulate_signal'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/trap.rb:26:in `block in trap'"]}`
I did find another error in /var/log/logstash-stdout.log stating the gem for each of the filters didn't have sufficient access:
`[ERROR] 2018-04-10 11:09:27.790 [main] Logstash - java.lang.IllegalStateException: org.jruby.exceptions.RaiseException: (Errno::EACCES) /usr/share/logstash/vendor/bundle/jruby/2.3.0/specifications/logstash-filter-cipher-3.0.1.gemspec`
So I changed their permission to sufficient levels to no longer cause this error. Is there anything else I need to do for these? I cannot seem to find any other process other than to use
> ./bin/logstash-plugin install logstash-filter-(name)
Here is an output of all the installed filters. As you can see, Alter and Cipher are both showing as installed.
```
./bin/logstash-plugin list --group filter
logstash-filter-aggregate
logstash-filter-alter
logstash-filter-anonymize
logstash-filter-cidr
logstash-filter-cipher
...
```
Thanks for your time.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 8, 2018, 7:36pm UTC](https://discuss.elastic.co/t/logstash-downloadable-filter-plugins-are-not-found-by-logstash/127539/2 "2018-05-08T19:36:14Z")
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