Cannot POST api/system/sessions of Graylog2 on CentOS 7 - api

I have an working installation of Graylog 2.1 on Debian 8, but I had to install Graylog on CentOS 7 because my datacenter uses this distribution and I want to have same environment to avoid problems when I need to ask changes in production.
I follow guideline of Graylog for CentOS 7 available in http://docs.graylog.org/en/2.1/pages/installation/os/centos.html and installed Graylog 2.1.2. MongoDB, ElasticSearch e Graylog are running and answer to local requests via terminal. However, web interface is not available. Login page is presented, but when I try to connect using admin user, I receive this answer:
Error - the server returned: 404 - cannot POST http://mydomain:9000/api/system/sessions (404)
Below are lines that I changed into server.conf of Graylog (I replaced real IP address here):
rest_listen_url = http://4.8.15.16:9000/api/
rest_transport_uri = http://4.8.15.16:9000
web_listen_uri = http://4.8.15.16:9000/
I have searched for references about this fail and created a graylog-settings.json file based on suggestion of Graylog github issues, with this content:
"custom_attributes": {
"graylog-server": {
"rest_transport_url": false
}
}
But event after restarting server, the problem continues. Graylog log only shows INFO records, then it seems to me that requests are not reaching server. I would like to know if this is due to network configuration or can be solved by an adjustment of Graylog.

Your rest_transport_uri looks odd in comparison with rest_listen_uri. Make sure that you actually need to set rest_transport_uri at all and that it is the correct setting.
I don't know where you found information about graylog-settings.json, but that file is only being used in the official Omnibus package (i. e. the OVA and AMIs).

Related

ActiveMQ 5.15 HTTP ERROR: 503

Run environment :linux (CentOS 7), JDK 1.8, & ActiveMQ 5.15
I started Activemq then visit the management page with Chrome,when I try to log in with the default username & password I get the following error;
HTTP ERROR: 503
Problem accessing /admin/. Reason:
Service Unavailable Powered by Jetty://
How can I resolve this problem?
I was getting this same error. It turns out that I had run it as root user originally, then later I stopped it and ran it as a non-root user. Certain data files that had been created and owned by the original root instance were not accessible to the non-root user.
Check the ownership of the files, and change them if necessary to match the user that the broker is running as.
Had the same issue.
Maybe something went wrong the extraction of the package.
I downloaded this:
wget https://archive.apache.org/dist/activemq/5.15.0/apache-activemq-5.15.0-bin.tar.gz
and extracted it with:
sudo tar -zxvf apache-activemq-5.15.0-bin.tar.gz -C /opt
then it worked for me.
My two cents:
I start with the activemq in Ubuntu Repo, but then later change to binary package from official website.
In my case, the repo version left an /etc/default/activemq config file, which runs activemq with user "activemq". It turns out in previous experiments, I did not kill the old processes running under "activemq" when I start activemq under my own user name. There are two activemq processes running under different user names, and when connecting to admin console, I have a 503.
I delete the /etc/default/activemq file, and kill all activemq processes running under "activemq", then restart activemq with my user name, the 503 is gone.

Trying to run Apache Apex's Yahoo Finance example on YARN

I've downloaded Apache Apex 3.5.0 along with Malhar 3.5.0.
I've successfully started the apex client and submitted the Yahoo Finance demo example to our YARN cluster (running CDH 5.10). The cluster is running and configured properly (many Spark and MR jobs are running on it).
I see the application I submitted as RUNNING in YARN as well as in the Apex cli. However when I try to connect to the Application Master I get a 404.
org.apache.hadoop.yarn.webapp.WebAppException: /: controller for default not found
I also tried directly to connect to the appMasterTrackingUrl reported by get-app-info command, and I get the same error.
I tried a couple of apex examples, and I always get the same error.
Any idea why?
It is somewhat expected. Add "/ws/v2/stram/info" to the URL path
When you connect to the App Master you need to provide the complete URL for a REST API to invoke. There is nothing to show/return for "/" so what you are seeing is expected. What are you trying to do connecting to the App Master?

Unable to access glassfish served content when using localhost

I created this simple dynamic web project (glassfish 4.1.1 latest atm) using eclipse java ee Mars.2 that I installed 2 days ago.
Checking on the admin, the app is deployed and running fine. I could not access the web app using the localhost:8080 url but it works when I use <computername>:8080.
I could access the admin using localhost:4848.
I tried disabling the firewall but the problem persists. What could be the problem?
The error is:
404 Not Found
No context found for request
In eclipse I see the log int he console that says: Automatic timeout occurred
As I pointed out in comments, you can configure listeners in Configuration -> needed configuration -> Network Config -> Network Listeners. However, it is still rather strange that your localhost doesn't work with 0.0.0.0 IP address, since it is a special address which means "listen on all available IPs on given port". Perhaps your network is somehow misconfigured.

Why does JavaBridge work but JavaBridgeTemplate621 not

I am trying to install a PHP Java Bridge as per the instructions on http://php-java-bridge.sourceforge.net/pjb/index.php on Windows 7
I have PHP working fine on via IIS installed at c:\php
I copied the JavaBridge.war to c:\php which proved to get a good result from the test (running from c:\php)
java -classpath JavaBridge.war TestInstallation
I installed Tomcat 7 and copied the JavaBridge.war to webapps, which the service extract automatically and I am able to get the expected result from
http://localhost:8080/JavaBridge/
All Ok Great!
However when I do the same with the JavaBrigdeTemplate621.war, the browser
http://localhost:8080/JavaBridgeTemplate621/
returns an error
HTTP Status 500 - php.java.bridge.http.FCGIConnectException: Could not connect to server
I have not included the whole page as its very verbose, but the last root cause entry is
root cause
java.io.IOException: PHP not found. Please install php-cgi. PHP test command was: [php-cgi, -v]
php.java.bridge.Util$Process.start(Util.java:1145)
php.java.servlet.fastcgi.FCGIProcess.start(FCGIProcess.java:68)
php.java.bridge.http.NPChannelFactory.doBind(NPChannelFactory.java:94)
php.java.bridge.http.FCGIConnectionFactory.runFcgi(FCGIConnectionFactory.java:88)
php.java.bridge.http.FCGIConnectionFactory$1.run(FCGIConnectionFactory.java:109)
I've tried restarting IIS as well as Tomcat several times
What am I missing (It's Hot and it's Friday ....)
I notice that
\webapps\JavaBridgeTemplate621\WEB-INF\cgi\x86-windows
has a text file called php-cgi.exe.MISSING.README.txt
where as
\webapps\JavaBridge\WEB-INF\cgi\x86-windows
has php-cgi.exe, php5ts.dll and php.ini
Is there another manual step required to get those in there not documented in the instructions?
Not reading the instructions clearly enough. I missed that you should copy the automatically created folder (from war) into the IIS web apps folder. I was trying use Tomcat as the HTTP server instead of IIS. Once I copied them to IIS and accessed via default port 80 (not 8080) it worked fine.
Hope my conversation with myself is of benefit to someone else

Fail to start Apache Directory Server - Error 04450

While I was trying to start ApacheDS 1.5.7 on windows platform, An Error 04450 occurs and the apacheds-rolling.log contains:
[21:07:27] ERROR [org.apache.directory.shared.ldap.entry.DefaultServerAttribute] - ERR_04450 The value {0} is incorrect, it hasnt been added
[21:07:27] ERROR [org.apache.directory.server.Service] - Cannot start the server : reuseAddress can't be set while the acceptor is bound.
How can i fix this problem? Anybody could help me? many thanks!
The warning log message is a bit misleading, actually this is not a serious issue, the server should be running despite of this warning, this has been fixed a while back in the latest trunk code (which will be released as 2.0 instead of 1.5.8).
According to this post, the dc=example,dc=org context entry is not created by default anymore but no one has updated the documentation to reflect this. I installed 1.5.7 and it looks to me like the partition was created fine, but I'm getting the same error as described above. I suggest installing an older version.
The 2nd error message suggests that the port is already in use. Is there a chance that you already had another ApacheDS process running, or that another program is using the ports?
This isn't a domain controller perchance, is it? If so, the default LDAP ports 389 & 636 are already in use for Active Directory, so you'll need to choose another. However, I believe the defaults for ApacheDS are 10389 (LDAP) and 10636 (LDAPS), in which case they would typically be open on a Windows box.
You can check for processes on the ports with the netstat -abn command, and look through the list for the process listening on port 10389 or whichever custom port you chose.