I've been running tomcat on my Amazon EC2 instance for a few weeks just fine but all of a sudden, I became unable to connect to it. When I use putty I can connect to it fine but when I try to connect with my browser by using ip:8080 , I can't connect anymore. I've tried restarting the instance (and of course, adjusting my input ip accordingly), restarting the tomcat server within the instance, and checking the security groups. Nothing seems to work. I have no idea why it stopped working out of the blue. How should I proceed?
There are many reasons to why you cannot connect. The best way to solve this is to follow Amazons troubleshooting tips, found here.
I had the same issue. The amazon troubleshooting did not help. Then I remembered that I ad a line in my system32/driver/etc host file when I did some site migration.
Deleted that line and I was back in business again.
Hope that helped
Related
I am doing my first project on Google Cloud, accessing SSH using the SSH dropdown on my VM instance and was going through the steps to set up the environment to use FileZilla to copy my project, apparently, I waited too long as I was setting up FileZilla and my SSH session timed out. Since then every time I try to access SSH, I get the following error message:
Code: 1006
Please ensure you can make a proper https connection to the IAP for TCP hostname: https://tunnel.cloudproxy.app
You may be able to connect without using the Cloud Identity-Aware Proxy.
This started happening around midnight last night and still going on this morning. I have searched and followed all the instructions pointed out on this link:
https://cloud.google.com/iap/docs/using-tcp-forwarding
and the problem persists. I have even stopped, started, and reset the VM instance which did not resolve the issue. I am hoping someone has any other suggestions I can follow beyond what can be found on this site already.
Thank you in advance for any help and suggestions.
UPDATE:. I still haven't found the solution, but I have found a way to access my instance through my local terminal on my MacBook using the gcloud command from the Google Cloud SDK.
UPDATE: I did some research and I found that I had to delete my access keys and create new ones and it solved the problem.
I finally decided to run a chainlink node on kovan, so I followed this link https://www.youtube.com/watch?v=t9Uknfw27IU&list=LL&index=8&t=555s on how to set up the node and after a few hours of work I made it happen. So after SSH tunneling into localhost:6688 I got the GUI for the chainlink operator and wrote in the password and got in.
So the next day I decided to program some jobs on the node and did the same thing as last day and got the
site can`t be reached - ERR_CONNECTION_RESET when SSH tunneling in localhost:6688 and I can see that the CL node is running in the linux box with no errors and note I dont own a router.
What I tried so far:
-switching browsers
-temporarily disabled the windows firewall
-manually opening up the port 6688
-deleting the VM instance on Google cloud platform and creating a new one
-double checking the .env file if database and other info from GCP and infuras
WSS were correct
-check the proxy settings
-cleared browser history and cookies
-deleted Winsock catalog entries
None of this has helped to resolve this issue, any help or suggestions would really be appreciated...
Managed to fix the issue myself, If anyone has the same error try this: go to your GCP and go to VM istances - firewall and add an exception for port 6688, then copy the externalIP , add it as your localhost= externalIP :6688...worked for me.
I am new to AWS and learning through hands on labs. As per the instructions in the lab, I launched an EC2 instance, installed apache and displayed a simple index.html file when the instance IP was accessed. This worked great and when I was done for the day I stopped the instance. Now when I select the instance, go to Actions > Instance State > Start it shows me that the instance is running but when I enter the IP address in the browser I get an error message that says:
This page isn’t working
[IP ADDRESS] didn’t send any data.
ERR_EMPTY_RESPONSE
Why is this happening when I have not changed anything else in the instance? How can I get it to work and show the index.html file again? I see no errors in the AWS console. I tried creating a new instance, which worked, stopped it and started again and faced the same problem.
Based on the comments.
The issue was that apache was not starting automatically after instance re-start.
The solution was to enable the automate start of the web server.
I've been running an instance EC2 through Laravel forge for about 2000 hours and this morning got this error while trying to reach it:
SQLSTATE[08006] [7] could not connect to server: Connection refused Is
the server running on host "172...***" and accepting TCP/IP
connections on port 5432?
After SSHing into the server I've getting a similar error when trying to run a command. I've dug through AWS but don't see any errors being throw. I double checked the ip address for the instance to make sure the IP hadn't changed for any reason. Of course I'm a little behind on my backups for the application so I'm hoping someone might have some ideas why else I can do to try and access this data. I haven't made any changes to the app in about 10 days, but found the error while I was pushing an update. I have six other instances of the same app that weren't affected (thankfully) but makes me even more confused with the cause of the issue.
In case anyone comes across a similar issue, here's what had happened. I had an error running in the background which had filled up the EC2 harddrive's log. Since the default Larvel/Forge image has a DB running within in the EC2 instance, once it ran out of room everything stopped working. I was able to SSH in and delete the log though, and everything started working again.
To prevent the issue from happening again I then created an amazon RDS and used that rather than the EC2 instance. It's about three or four times the price of just an EC2 instance, but still not that much and the confidence I now have in the system is well worth it.
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.