# Install logstash-filter-de\_dot failed? **URL:** \ **Category:** Logstash\ **Created:** [March 22, 2016, 2:29am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058 "2016-03-22T02:29:16Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![stefansaye](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@stefansaye](https://discuss.elastic.co/u/stefansaye)\ **Post date:** [March 22, 2016, 2:29am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/1 "2016-03-22T02:29:16Z")
Hi, I am trying to install logstash-filter-de\_dot plugin with below command. /opt/logstash/bin/plugin install logstash-filter-de\_dot But it shows below error. Validating logstash-filter-de\_dot Unable to download data from [https://rubygems.org](https://rubygems.org) - SocketError: initialize: name or service not known ([https://rubygems.org/latest\_specs.4.8.gz](https://rubygems.org/latest_specs.4.8.gz)) ERROR: Installation aborted, verification failed for logstash-filter-de\_dot my logstash version is logstash 2.1.3 What am I missing? ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [March 22, 2016, 2:32am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/2 "2016-03-22T02:32:35Z")
Can you ping [rubygems.com](http://rubygems.com) from the host? It looks like it's either a general internet accessibility or a DNS issue. ---
**Author:** ![stefansaye](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@stefansaye](https://discuss.elastic.co/u/stefansaye)\ **Post date:** [March 22, 2016, 2:36am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/3 "2016-03-22T02:36:19Z")
root@hp-dx:~# ping [https://rubygems.org](https://rubygems.org) ping: unknown host [https://rubygems.org](https://rubygems.org) ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [March 22, 2016, 2:36am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/4 "2016-03-22T02:36:41Z")
No, `ping rubygems.org`. ---
**Author:** ![stefansaye](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@stefansaye](https://discuss.elastic.co/u/stefansaye)\ **Post date:** [March 22, 2016, 2:38am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/5 "2016-03-22T02:38:38Z")
ping: unknown host [rubygems.org](http://rubygems.org) ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [March 22, 2016, 2:39am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/6 "2016-03-22T02:39:15Z")
Can you ping any other host on the internet? If not then it's a DNS issue. ---
**Author:** ![stefansaye](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@stefansaye](https://discuss.elastic.co/u/stefansaye)\ **Post date:** [March 22, 2016, 3:30am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/7 "2016-03-22T03:30:40Z")
my dns server setting as follows, nameserver 8.8.4.4 nameserver 8.8.8.8 ping yahoo is success ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 5:06am UTC](https://discuss.elastic.co/t/install-logstash-filter-de-dot-failed/45058/8 "2017-07-06T05:06:00Z")