# Can't install x-pcak on elasticsearch **URL:** \ **Category:** Elasticsearch\ **Created:** [August 31, 2017, 10:05am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984 "2017-08-31T10:05:06Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![irtizaur](https://avatars.discourse-cdn.com/v4/letter/i/51bf81/32.png) [@irtizaur](https://discuss.elastic.co/u/irtizaur)\ **Post date:** [August 31, 2017, 10:05am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984/1 "2017-08-31T10:05:06Z")
Hi, i am using Elasticsearch 5.5.2 and Kibana 5.5.2 on ubuntu 16.04 version. for both i have followed the Debian package installation. Now i am trying to install x-pack on both elasticsearch and kibana. but getting below error for elasticsearch... ``` cd /usr/share/elasticsearch sudo bin/elasticsearch-plugin install x-pack Exception in thread "main" java.net.UnknownHostException: artifacts.elastic.co at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:673) at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173) at sun.net.NetworkClient.doConnect(NetworkClient.java:180) at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) at sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:264) at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191) at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1138) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1032) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177) at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153) at org.elasticsearch.plugins.InstallPluginCommand.urlExists(InstallPluginCommand.java:300) at org.elasticsearch.plugins.InstallPluginCommand.getElasticUrl(InstallPluginCommand.java:267) at org.elasticsearch.plugins.InstallPluginCommand.download(InstallPluginCommand.java:223) at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginCommand.java:215) at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginCommand.java:201) at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:67) at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:122) at org.elasticsearch.cli.MultiCommand.execute(MultiCommand.java:69) at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:122) at org.elasticsearch.cli.Command.main(Command.java:88) at org.elasticsearch.plugins.PluginCli.main(PluginCli.java:47) ``` is there anything i am 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:** [September 1, 2017, 2:50am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984/2 "2017-09-01T02:50:15Z")
Can you run a `ping artifacts.elastic.co` and show the output? ---
**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\ **Post date:** [September 1, 2017, 9:29am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984/3 "2017-09-01T09:29:35Z")
Can you also run `host artifacts.elastic.co` or `nslookup artifacts.elastic.co` and paste the output? It looks as if your DNS resolution is not configured correctly. ---
**Author:** ![irtizaur](https://avatars.discourse-cdn.com/v4/letter/i/51bf81/32.png) [@irtizaur](https://discuss.elastic.co/u/irtizaur)\ **Post date:** [September 4, 2017, 6:45am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984/4 "2017-09-04T06:45:03Z")
hi Mark Walkom, very sorry for my late response. i was actually out of station for last 3 days and with very limited internet connectivity 😃 here is the response, ``` /usr/share/elasticsearch$ ping artifacts.elastic.co ping: unknown host artifacts.elastic.co ``` looks like a DNS issue... is there any workaround? ---
**Author:** ![irtizaur](https://avatars.discourse-cdn.com/v4/letter/i/51bf81/32.png) [@irtizaur](https://discuss.elastic.co/u/irtizaur)\ **Post date:** [September 4, 2017, 6:47am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984/5 "2017-09-04T06:47:07Z")
Hi Alexander Reelsen very sorry for my late response. here is the output... ``` /usr/share/elasticsearch$ host artifacts.elastic.co ;; connection timed out; no servers could be reached irtizaur@ubuntu:/usr/share/elasticsearch$ nslookup artifacts.elastic.co ;; connection timed out; no servers could be reached ``` yes, looks like the issue is on the DNS side... any workaround? ---
**Author:** ![TimV](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/timv/32/13162_2.png) [@TimV](https://discuss.elastic.co/u/TimV)\ **Post date:** [September 7, 2017, 4:57am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984/6 "2017-09-07T04:57:52Z")
> [@irtizaur](#): > > yes, looks like the issue is on the DNS side… any workaround? From the looks of it, your server is isolated from the wider internet - probably intentionally. You'll need to do an [offline install](https://www.elastic.co/guide/en/elasticsearch/reference/5.5/installing-xpack-es.html). Download the xpack zip file on a machine that has internet access, and then copy it across to your server and install from a file. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 5, 2017, 4:58am UTC](https://discuss.elastic.co/t/cant-install-x-pcak-on-elasticsearch/98984/7 "2017-10-05T04:58:01Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.