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https://issues.apache.org/jira/browse/KARAF-6231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813061#comment-16813061
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Erik Brakkee commented on KARAF-6231:
-------------------------------------
It turns out that the servlet only starts working after the first war is
deployed. This requires installation of the war feature and installation of a
war.
So the documentation is incorrect because it says in 4.17.1 (after installing
the HTTP feature)
"Test the HTTP service is up by pointing your browser to
[[http://localhost:8181/]].";
Also, the log file is confusing since it also says that it is listening on port
8181 but this is not true.
Additionally, even after deploying a WAR, the default URL
([http://localhost:8181)|http://localhost:8181)/] gives a 404 error and not a
test page to confirm that the installation is working.
> http feature does not work
> --------------------------
>
> Key: KARAF-6231
> URL: https://issues.apache.org/jira/browse/KARAF-6231
> Project: Karaf
> Issue Type: Bug
> Components: karaf
> Affects Versions: 4.2.4
> Environment: Centos 7
> uname -a: Linux whistler 3.10.0-862.3.2.el7.x86_64 #1 SMP Mon May 21 23:36:36
> UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
> java version "1.8.0_131"
> Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
> Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
> Reporter: Erik Brakkee
> Priority: Major
> Labels: features
> Attachments: karaf.log.save
>
>
> When I install karaf and immediately after that install the http feature,
> then the feature list shows the feature is installed and started. However,
> nothing appears to be listening on the HTTP port.
> Steps:
> * download apache karaf 4.2.4
> * tar xvzf ~/downloads/apache-karaf-4.2.4.tar.gz
> * cd apache-karaf-4.2.4/bin/
> * ./karaf
> * karaf@root()> feature:list -i # shows that feature is not installed
> * karaf@root()> feature:install http # installs http feature
> * karaf@root()> feature:list -i # shows feature installed
> {quote}{\{karaf@root()> feature:list -i }}
> {{Name | Version | Required | State | Repository | Description}}
>
> {{-----------------++----------------------------++----------------------------------+--------------------------------------------------}}
> {{feature | 4.2.4 | x | Started | standard-4.2.4 | Features Support}}
> {{shell | 4.2.4 | x | Started | standard-4.2.4 | Karaf Shell}}
> {{deployer | 4.2.4 | x | Started | standard-4.2.4 | Karaf Deployer}}
> {{bundle | 4.2.4 | x | Started | standard-4.2.4 | Provide Bundle support}}
> {{config | 4.2.4 | x | Started | standard-4.2.4 | Provide OSGi ConfigAdmin
> support}}
> {{diagnostic | 4.2.4 | x | Started | standard-4.2.4 | Provide Diagnostic
> support}}
> {{instance | 4.2.4 | x | Started | standard-4.2.4 | Provide Instance
> support}}
> {{jaas | 4.2.4 | x | Started | standard-4.2.4 | Provide JAAS support}}
> {{log | 4.2.4 | x | Started | standard-4.2.4 | Provide Log support}}
> {{package | 4.2.4 | x | Started | standard-4.2.4 | Package commands and
> mbeans}}
> {{service | 4.2.4 | x | Started | standard-4.2.4 | Provide Service support}}
> {{system | 4.2.4 | x | Started | standard-4.2.4 | Provide System support}}
> {{http | 4.2.4 | x | Started | standard-4.2.4 | Implementation of the OSGI
> HTTP Service}}
> {{pax-http-service | 7.2.8 | | Started | standard-4.2.4 | Pax-Web OSGi HTTP
> Service}}
> {{kar | 4.2.4 | x | Started | standard-4.2.4 | Provide KAR (KARaf archive)
> support}}
> {{ssh | 4.2.4 | x | Started | standard-4.2.4 | Provide a SSHd server on
> Karaf}}
> {{management | 4.2.4 | x | Started | standard-4.2.4 | Provide a JMX
> MBeanServer and a set of MBeans in}}
> {{eventadmin | 4.2.4 | x | Started | standard-4.2.4 | OSGi Event Admin
> service specification for event-}}
> {{scr | 4.2.4 | | Started | standard-4.2.4 | Declarative Service support}}
> {{wrap | 2.6.1 | x | Started | standard-4.2.4 | Wrap URL handler}}
> {{pax-web-core | 7.2.8 | | Started | org.ops4j.pax.web-7.2.8 | Provide Core
> pax-web bundles}}
> {{pax-jetty | 9.4.12.v20180830 | | Started | org.ops4j.pax.web-7.2.8 |
> Provide Jetty engine support}}
> {{pax-http-jetty | 7.2.8 | | Started | org.ops4j.pax.web-7.2.8 |}}
> {{pax-http | 7.2.8 | | Started | org.ops4j.pax.web-7.2.8 | Implementation of
> the OSGI HTTP Service}}
> {quote}
>
> Now connecting the log file data/log/karaf.log shows that the HTTP port 8181
> is used
> {quote}{{2019-04-09T08:23:56,685 | INFO | paxweb-config-1-thread-1 |
> JettyServerImpl | 80 - org.ops4j.pax.web.pax-web-jetty - 7.2.8 | Pax Web
> available at [0.0.0.0]:[8181]}}
> {quote}
> However, opening [http://localhost:8181|http://localhost:8181/] in the
> browser does not work.
> Netstat also shows that karaf is not listening on port 8181
>
> {quote}erik@whistler:~/dev/ttt/apache-karaf-4.2.4/data/log> netstat -anp |
> grep 18000
> (Not all processes could be identified, non-owned process info
> will not be shown, you would have to be root to see it all.)
> tcp6 0 0 :::44444 :::* LISTEN 18000/java
> tcp6 0 0 :::8101 :::* LISTEN 18000/java
> tcp6 0 0 127.0.0.1:1099 :::* LISTEN 18000/java
> tcp6 0 0 127.0.0.1:46860 :::* LISTEN 18000/java
> tcp6 0 0 :::44855 :::* LISTEN 18000/java
> unix 2 [ ] STREAM CONNECTED 1081708 18000/java
> unix 3 [ ] STREAM CONNECTED 1085937 18000/java
> unix 2 [ ] STREAM CONNECTED 1076602 18000/java
> unix 3 [ ] STREAM CONNECTED 1085938 18000/java
> unix 3 [ ] STREAM CONNECTED 1086950 18000/java
> unix 3 [ ] STREAM CONNECTED 1091189 18000/java
> unix 3 [ ] STREAM CONNECTED 1086951 18000/java
> unix 3 [ ] STREAM CONNECTED 1091190 18000/java
> The log file shows no exceptions.
>
> {quote}
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