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Frequently asked JBoss tool server (WildFly) administration interview questions with an answer from beginner to expert level.
You may also want to checkWAS&ApacheInterview Q.A.
So, I hear you, here you go.
Before jumping to Q.A., alittle introductionto JBoss AS.
WildFly is the new name of the JBoss program server starting from version 8.
It was renamed on 20thNov 2014.
In one line WildFly is a community version and its FREE but JBoss EAP is not.
What is the directory structure in JBoss?
The following directories are available after JBoss is installed.
What are the logging levels available?
There is five possible levels:
3.
Which component is responsible for handling clustering?
How to install JBoss on Linux server?
JBoss installation is very straightforward.
you should probably download the desired version from JBoss official download page in zip or gz format.
Once downloaded, just extract the file to the location you want to install.
Whats the default port to access Administration Console in JBoss 7?
9990 is the default port.
If its installed onserver1then it’s crucial that you access like:
6.
What must be done to access Admin Console?
The user must be created under ManagementRealm to have console operational.
To create the user, it’s possible for you to go to bin folder and execute add-user.sh script.
How to start JBoss in standalone mode?
Go to the bin folder where JBoss is installed and start with the following command.
How to increase Java Heap Memory in JBoss 7?
Heap Memory can be increased in a respective conf file.
What is the difference between standalone and domain mode?
Standalonemode is single JVM process where every JBoss server has its configuration.
If you just need one JVM or development environment, then standalone would be perfect.
Domainmode may have multiple servers where all configuration is managed centralized and often used in production environment.
Can you create a cluster in standalone mode?
Yes, clustering is possible in standalone mode.
However, an software must be deployed on each server/JVM in standalone mode.
What is difference between and ?
Having validate-on-match configured may have a little high load on the database as it may create lots of requests.
validate the connection periodically based on what frequency is configured for background-validation-millis.
The default configuration is set to zero means disabled.
What module needed to integrate Apache with JBoss?
There are two modules you could use to connect JBoss with Apache.
What are the file types you could deploy in JBoss?
you might deploy almost any kind of Java/J2EE app, and it supports the following file format.
How can you deploy an utility?
There are three possible ways to deploy an utility in JBoss utility server.
What marker file throw in is required to instruct JBoss to deploy?
.dodeploy file suffix is needed for JBoss to deploy or redeploy an software.
Ex:
16.
What are the important types available for marker file deployment?
What does mgmt-user.properties contain?
All admin console users and passwords (encrypted) are stored in mgmt.-user.properties file.
