I need to remotely debug a Java EE application running on a WebLogic 10.3.5 cluster. It is important that I debug it whilst clustered, not running on a single box.
I have read docs that state you can either modify the Java Options in the start script or the debug flag in the domain config, however what I do not understand is how you know which server to connect to when clustered.
My cluster is configured for round robin load balancing so I have no way of knowing which server to connect my debugger to.
Is it possible to connect the remote debugger to the cluster rather than a single server?
It would seem there's no domain or cluster level connection available. One must open a new debugger connection to each server.
It just wasn't obvious in my IDE that clicking debug more than once would open multiple debugger connections.
You could try something like this,
Create Debug configuration with Host and Port number of the Admin Server which manages the cluster servers.
Try debug on admin server.
Related
I'm trying to run my application on GCE VM. It uses nodeJs as frontend and a Java backend. I use this server to communicate with my local computer using MQTT. This is working but after some time (one hour and a half), the server seems to go to sleep (or the ports close ?).
Both MQTT and ssh terminal interface connections are lost.
When I connect back, the application is not running anymore, it seems like the VM restarted.
Do you have any idea on how to keep my server alive ? I can give further details.
Answering my own question as John Hanley explained the solution in comments:
"By what method are you running your frontend and backend code. VMs do not go to sleep. If you are starting your software via an SSH session, that will be an issue. Your code needs to run as a service. Edit your question with more details."
I was indeed running my application via the ssh terminal which caused the problem. The solution for me was to remotely access the VM via vncserver and to launch the application using the VM's terminal.
I am attempting to take my existing cloud composer environment and connect to a remote SQL database (Azure SQL). I've been banging at my head at this for a few days and I'm hoping someone can point out where my problem lies.
Following the documentation found here I've spun up a GKE Service and SQL Proxy workload. I then created a new airflow connection as show here using the full name of the service azure-sqlproxy-service:
I test run one of my DAG tasks and get the following:
Unable to connect: Adaptive Server is unavailable or does not exist
Not sure on the issue I decide to remote directly into one of the workers, whitelist that IP on the remote DB firewall, and try to connect to the server. With no command line MSSQL client installed I launch python on the worker and attempt to connect to the database with the following:
connection = pymssql.connect(host='database.url.net',user='sa',password='password',database='database')
From which I get the same error above with both the Service and the remote IP entered in as host. Even ignoring the service/proxy shouldn't this airflow worker be able to reach the remote database? I can ping websites but checking the remote logs the DB doesn't show any failed logins. With the generic error and not many ideas on what to do next I'm stuck. A few google results have suggested switching libraries but I'm not quite sure how, or if I even need to, within airflow.
What troubleshooting steps could I take next to get at least a single worker communicating to the DB before moving on the the service/proxy?
After much pain I've found that Cloud composer uses ubuntu 1804 which currently breaks pymssql as per here:
https://github.com/pymssql/pymssql/issues/687
I tried downgrading to 2.1.4 to no success. Needing to get this done I've followed the instructions outlined in this post to use pyodbc.
Google Composer- How do I install Microsoft SQL Server ODBC drivers on environments
I have been trying to setup Docker in Windows Server 2016 in an AWS instance to run an IIS program.
From this question,
Cannot access an IIS container from browser - Docker, IIS has been setup inside a container and it is accessible from the host without port mapping.
However, if I want to allow other users from the Internet/Intranet to access the website, after Google-ing it, I guess we do need port mapping...
The error I have encountered in port mapping is given in the above question so... I guess using nat is not the correct option. Therefore, my team and I tried to create another network (custom/bridge) following instructions from
https://docs.docker.com/v17.09/engine/userguide/networking/#user-defined-networks
However, we cannot create a network as follows:
; Googled answer:
https://github.com/docker/for-win/issues/1960
My team guessed maybe its because AWS blocked that option, if anyone can confirm me, please do.
Another thing that I notice is: when we create an ECS instance in AWS,
So... only default = NAT network mode is accepted in Windows server?
Our objective: put the container hosted IIS application to Internet/Intranet in Windows Server 2016...
If anyone has any suggestion/advice, please tell me, many thanks.
I have an EC2 (Windoes Server R2 2012) that is running a NodeJS process. Now, the detail is that once I get Disconnected from server (Disconnection it is supposed to keep everything on server, hence my NodeJS process) after a few minutes, the session is killed, so also the process.
I connect again and it is like I have signed out. How can I solve this? I really need to the process still running without stay ALWAYS connected to the server.
Normally Windows installation will not logoff disconnected sessions.
Your installation is probably customized for it to be logging off disconnected RDP sessions.
Load the Group Policy Object Editor and go to Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Session Time Limits.
Check that the setting "Set time limit for disconnected sessions" is either Not Configured, or Enabled, but with a setting of Never.
I have RAILO (Railo 3.1.2.001 final) installed on an AMAZON EC2 instance and everything seems to be working fine for the tests I have done. I can connect to mySQL and simple commands work. The applications I am planning to run on it make extensive use of CFFTP to pull files in from clients and process them. The OPEN command works fine and I get a succeeded in Active and Passive mode, but when I try to do anything (check for a file, put a file, download) I get : 500 Illegal PORT command.
My thought here is the AMAZON firewall is blocking some ports and something needs to be setup for this to function.
Anyone have any experience with this and can point me in the correct direction?
Thanks in advance,
Jeff
do you connect from outside amazon to the instance ? if you do check the security group and allow the ip/port for your application.