I could not connect again my EC2 instance from VScode .Yestedy I connected with my remote computer but today , I get error.Cannot connect with host.Can anybody help me please?
Check the IP addresses.
This is common because new AWS users don't realize the IP can change after stopping the EC2 and restarting, unless you assign an Elastic IP address.
So if you did not use an Elastic IP, and you have stopped and started the server, the IP would have changed.
However to properly assist you you will need to post more details like the error you saw and the settings of the EC2 instance.
Related
It's working fine. All of a sudden it started throwing 504 Timeout error. In SSH it was showing ubuntu upgrade warning, I've installed the necessary and upgraded correctly hoping that it would not throw errors anymore. But still the issue persist.
I've checked the inbound rules in AWS, all good for port 80,443 and 22. I dont have SSM agent installed in AWS and I dont find the right guide to install that.
Which could have possibly gone wrong?
Based on the comments.
The issue was that instance was restarted. Consequently, the public IP provided by AWS has changed:
We release your instance's public IP address when it is stopped, hibernated, or terminated. Your stopped or hibernated instance receives a new public IP address when it is started.
To overcome this issue in the future, you can attach an elastic IP (EIP) to your instance. EIP persists between restarts and is free as long as it is attached to a running instance.
First, attach one elastic IP with your existing instance which then you can one public IP and EIP
if you don't attach the EIP every time when you will restart the server you get a new instance IP.
Also, you have to check the security group applied on that instance.
please advise me.
I am no developer and very new to this. Our website is down and it keeps showing the following error:
This site can’t be reached
The connection was reset.
We are using AWS.
It keeps happening every few weeks. I tried redirecting it on AWS to a different website, for the time being, that didn't work either.
Any help is appreciated
If the website is hosted in EC2 instance
Check if your EC2 instance is having the same ip as earlier if it doesn't have a elastic ip associated with it chances are any restart of that ec2 instance might have changed the public ip address.
If above is same as earlier check the security group if it allows traffic on port 80 and 443 ( if using ssl )
And most importantly check if your website is indeed running i.e check with IP address in web browser i.e http://<ip_address>:<port>/ or https://<ip_address>:<port>/
I am trying to fix a website that is hosted on Google Cloud Platform using VM instance. The website is giving me a connection refused error message. I have checked that the firewall rules are set up and are provided to the VM instance.
The VM external IP is static and the same IP is present on both cloud DNS and GoDaddy.
I'm also unable to SSH into the instance.
The SSH screen is stuck here and is not loading any further
I have given the necessary permissions to the instance and the user (Compute Admin, Compute Instance Admin (v1)), but still no luck.
As the instance is created from a custom image, so later, I tried creating another instance with the same config and I was able to SSH from it. So, please find some screenshots attached below if those could be of any help
netstat -a
route -n
df -h
I am new to this so any help to fix the issue and get the website up and running would be highly appreciated.
If it worked at the second attempt (2nd Instance I mean), I suspect that the SSH service hasn't started properly. I would recommend you to check the Serial Port Output, and Accessing into the Instance through the serial port in order to be able to troubleshoot it.
Note that you'll need a user to access through the serial port. If you don't have any user created, you will be able to do so using an startup-script.
Hope this helps!
I have a site hosted on AWS EC2 instance. I stopped the instance and started it up again and noticed the IP address had changed. Due to complications with this happening posts I read online suggested using an elastic IP. I allocated one and associated it with my EC2 instance. I also made sure that my hosted zone is pointing to my elastic IP. Now when I try to go to my domain I get the error "[site] refused to connect". I am able to ssh into my instance via terminal using the elastic IP. I am lost on where to go next. Any advice would be greatly appreciated. Thank you in advance!
Thanks to #strongjz I have the answer to the question. Hopefully this will help someone else in the future. Once you stop an amazon EC2 instance, not only do you need to check your IP address as it will change but also make sure to ssh into your instance and run sudo service httpd start to make sure that your web server is running. This was the problem for me. Took me days to figure it out. Big thanks to #strongjz for helping me with this!
I created a VM using Hyper-V on my local machine which I can RDP onto fine. I exported the VHDX to VHD and then uploaded it to AWS via the API.
This created a new EC2 instance for me but I cannot connect to it as it has no security keypair associated.
Thus I created a private AMI from the instance and re-instantiated a new EC2 instance from this AMI, setting the keypair in the process to ensure HTTP, RDP etc are permitted. The EC2 instance is running, but when I download teh RDP shortcut if fails to connect. I've tried rebooting the instance several times (as this was one of the suggested solutions on here when I searched) but it hasn't helped.
I also cannot ping any of these instances via the public DNS or private DNS.
Any idea what I'm doing wrong? I'm not even getting as far as the password prompt, its the connectivity is the problem.
Thanks
I had a similar problem - this is the tip from the AWS documentation that helped me solve it:
Verify that the route table for the subnet has a route that sends all traffic
destined outside the VPC (0.0.0.0/0) to the Internet gateway for the VPC
Additional debugging tips for this problem can be found here: Remote Desktop can't connect to the remote computer
The problem is probably the security group configuration attached to the instance. Make sure you have inbound TCP port 3389 permitted to be able to connect via RDP.
in username type:
.\Administrator
....and your decrypted password
See, this is local user. but you dont know real local hostname, that different from public DNS name.
Was helpful for me, hope for you too.
My guess for the reason you aren't getting anywhere has to do with the host certificates.
Be mindful that each computer connecting to the server via RDP needs to have an IAM user in AWS with an X.509 certificate uploaded to their account.
When importing or creating a windows AMI it is best to install and configure the EC2Config service.
The EC2 Config service does the following when you launch the instance:
At initial setup:
Sets the hostname to the private DNS name
Generates and sets a random password on the Administrator account
Initializes and formats the ephemeral disks
Generates and installs the host certificate used for Terminal
Services
Syncs the instance clock with a time server
After initial setup:
Writes the last three entries in the System event log to the Amazon
EC2 console so you can debug startup problems.
Prepares instances for bundling
Also, by default, security groups do not allow you to ping the instances. You must enable ICMP in the security group.
Hope that helps.
EDIT: Here is the link to the 64bit version of the EC2Config Installer
I also had the same problem. This is what I got from EC2.
Public DNS ec2-23-22-109-251.compute-1.amazonaws.com
User name Administrator
Password MyPassword
On the remote desktop, enter the domain and user name as
ec2-23-22-109-251\Administrator
If you paste the password is may not work, try to paste it but reenter the last 1 or 2 characters. Once you get the security certificate prompt accept/install it and your connection should open soon.
This is what worked for me:
Use your cell phone as a "hot spot" - which gives you a static IP address. That worked. Now, I'll need to contact my Internet provider to assign a static IP to my wireless router. Currently, it is spitting out DHCP IP addresses.
UPDATE:
12.7.2016
You need to go to the Security Group, select the Instance, then EDIT the RDP. If you click "MyIP" that should work for those of us working from home. If you are onsite, you may need to put in a custom CIDR.
After rebooting an EC2 instance, I found that I needed to reassociate the Elastic IP address associated with the instance. You click the button below then select the instance and private instance IP address when prompted.
RDP access worked after this step.
After patching Windows 2019 on my server, I couldn't access the instance anymore despite all my working settings didn't change. I used EC2Rescue to fix my issue
Please refer to the link below for details on how to use it: https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/troubleshoot-connect-windows-instance.html#AWSSupport-ExecuteEC2Rescue