I have Tomcat running on my linux box and I can't access my apps externally. I can access it on my box using localhost:8080 and [ip-addr]:8080. It times out if I use [ip-addr]:8080 on another machine.
I've tried disabling the firewall, but that didn't help.
Any tips?
From https://serverfault.com/questions/390840/how-does-one-get-tomcat-to-bind-to-ipv4-address it looks like you want to add JAVA_OPTS=" $JAVA_OPTS -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Addresses=true " to your catalina.sh
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I'm using WSL2 on Windows 10.
My dev stack is using a local webserver (localwp or wamp) on the host OS.
I use WSL2 as the main terminal (SSH, Git, SASS, automation tools, ...).
What I need is a way to connect to my host services (MySql) from the WSL2 system using a server name instead of a random IP address.
It is already possible for the Windows host to connect to WSL2 services with "localhost". Is there a solution to do it the other way?
You should use hostname.local to access Windows from WSL2 because that will use the correct IP. Note that hostname should be replaced with the result of the hostname command run in WSL2.
You can check the IP by running ping $(hostname).local from WSL2.
You also need to add a firewall rule to allow traffic from WSL2 to Windows. In an elevated PowerShell prompt run this:
New-NetFirewallRule -DisplayName "WSL" -Direction Inbound -InterfaceAlias "vEthernet (WSL)" -Action Allow
The command above should allow you to access anything exposed by Windows from WSL, no matter what port, however bear in mind that any apps you've launched get an automated rule created for them when you first launch them, blocking access from public networks (this is when you get a prompt from Windows Firewall, asking whether the app should be allowed to accept connections from public networks).
If you don't explicitly allow, they will be blocked by default, which also blocks connections from WSL. So you might need to find that inbound rule, and change it from block to allow (or just delete it).
See info here:
https://github.com/microsoft/WSL/issues/4585#issuecomment-610061194
Well, your title and your question body don't seem quite aligned.
The question title says "use localhost", but then in the body you say "using a server name."
Accessing the Windows 10 service via the name "localhost" from WSL2? Let's just go with "no". I can think of a possibility of how to make it work, but it would be complicated.
But I think the second is really what you are looking for, so a couple of options that I can think of for accessing the Windows host services by hostname in WSL2:
First, and hopefully the easiest, WSL2 supports mDNS (WSL1 did not), so you should be able to access the Windows host as {hostname}.local (where {hostname} is the name of the Windows host (literally, in bash, ping $(hostname).local, since the assigned WSL2 hostname is that of the host Windows 10 computer). That works for me. While I don't recall having to do anything special to enable this, this Super User answer seems to indicate that you have to turn it on manually.
The second option would be to add your Windows host IP to /etc/hosts. If your Windows IP is static, then you could just add it manually to /etc/hosts and be done. If it's dynamic, then you might want to script it. You can retrieve it from inside WSL2 via:
powershell.exe "(Test-Connection -ComputerName (hostname) -Count 1).IPV4Address.IPAddressToString" (and other methods) and then use something like sed to change /etc/hosts.
Add the following code to ~/.bashrc or ~/.zshrc, and then use winhost to access the host ip。
sed -i -e '/winhost/d' /etc/hosts
win_ip=$(cat /etc/resolv.conf | grep nameserver | awk '{ print $2 }')
win_host="$win_ip winhost"
echo $win_host >> /etc/hosts
The last time I was facing this issue,
I downgraded to WSL1, and all the connections started working perfectly.
You can use:
wsl --set-version Ubuntu 1
This is the easiest approach to fix all connection related issues in WSL2.
I want to change the context-path of application in glassfish using linux.
I cannot access the 4848 of glassfish due to some restrictions, i can only access it thru linux.
You can change the port for the admin-listener in the domain.xml file:
<network-listener
protocol="admin-listener"
port="9000" // <-- change the port to your needs
name="admin-listener"
thread-pool="admin-thread-pool"
transport="tcp">
</network-listener>
Note: I did not test if the console commands work when you change the admin listener port. So you should test it in you DEV or TEST enviornment before.
I have installed xampp on linux (command line version with no gui).
I am using Amazon Linux AMI.
The installation is successful and i got xampp up and running.
$ sudo /opt/lampp/lampp start
Starting XAMPP for Linux 5.6.14-4...
XAMPP: Starting Apache...ok.
XAMPP: Starting MySQL...ok.
However i am not able to access the xampp ui from browser.
I am accessing http://(public ip of the linux ami)
Is there anything else required to access the ui.
I did some R&D around the problem and found out that the security group (linked to the amazon instance) did not allow http traffic.
Edited security group to allow http traffic and issue was resolved.
XAMPP UI can be accessed now using the public DNS or public IP.
RackSpace Cloud Server Ubuntu-12.04, Intellij Idea-11.1.2, Windows-8, Tomcat-7.0.26, JDK-6.
On Intellij Idea when i try to run jsf project on my remote Tomcat 7 server it says:
Error running servername: Unable to connect to the ip-address:1099
It seems problem is about JNDI port which is 1099 but I couldn't activate it I guess. Tomcat config is sth. like that:
What I've tried?
Setting CATALINA_OPTS or JAVA_OPTS on the server side with:
CATALINA_OPTS=-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=1099
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false
and
JAVA_OPTS=-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=1099
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false
But this one did not work, any ideas?
My answer to my question:
The correct way to deploy remotely is editing JAVA_OPTS environment variable on the remote server. Just enter the command below:
export JAVA_OPTS="-Dcom.sun.management.jmxremote=
-Dcom.sun.management.jmxremote.port=1099
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false"
If that's not going to work and if you don't have any obsession to deploy your website via Intellij Idea, I've got the solution for this problem. To be able to run your website under Tomcat, you can/should get artifact in form of .war file.
It can be done in Intellij from project settings(ctrl+alt+shift+s) then hit the plus button and add new artifact(web:application archieve)
After rebuilding the artifact, .war file can be seen in project-folder\out\artifacts. Next, you should place this file into your tomcat/webapps folder.
For example if you are using Tomcat-7, the folder that I mean exists in /var/lib/tomcat7/webapps. Before copying your .war file you should rename it as ROOT.war. This provides to access your site directly by http://youripaddress:8080. After restarting Tomcat7 service you can access the site.
But not finished yet, you can debug your project remotely like you are debugging your project at your local machine with Intellij Idea. Open Run/Debug Configuration in Idea, hit the plus button and there must be Remote. This is the way to debug your projects for application servers like JBoss, Glassfish as well in Idea. Enter your host and port numbers, select your project as a module.
Before starting to debug, as Intellij says you should give the following parameter to your server JVM:
JAVA_OPTS="$JAVA_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005"
To be able to do that in Ubuntu and for Tomcat-7, modified the catalina.sh file in usr/share/tomcat7 folder. I inserted the parameter above of the if [ -z "$LOGGING_MANAGER" ]; then line. It must be on the middle part of the file. Then you should be able to debug your project with Intellij Idea.
I am having difficulty connecting to a remote Windows system running cygwin.
When I connect from a linux box to cygwin, it connects fine and "sees" the
remote home directory as /home/userID
When I connect from Windows cygwin to the remote windows cygwin, it sees
the home directory as /cygdrive/c/Documents and Settings/UserID
Finally, when I am logged onto the remote Windows machine (the one with the problem)
home is /home/UseID but the value for cygpath -H is
$ echo $(cygpath -H)
/cygdrive/c/Documents and Settings
This seems to be causing my connection problem from windows to windows
and no problem from linux to windows
Any ideas how to fix it?
Since you have the correct path in /etc/passwd, one possibility is that perhaps the SSH client you are using from your Windows systems is sending custom environment values.
If you're using PuTTY, before connecting, look in the tree panel on the left hand side of the dialog. There should be an entry called Connection and a sub-entry called Data which will bring you to an option screen that has a section called Environment variables. Check if the HOME var is being overridden there and if so, remove it.
If you're using a different SSH client, check its configuration to see if its using the SendEnv option. More info on that here: http://www.openbsd.org/cgi-bin/man.cgi?query=ssh_config.
Or you could try blocking off custom environments on the destination/server side by disabling AcceptEnv in the SSHd configuration on the system you're connecting to. More info on that here: http://www.openbsd.org/cgi-bin/man.cgi?query=sshd_config.
Hope this helps.