I am trying to install KafkaMagic on ec2 to manage our kafka cluster. I created an EC2 instance on our VPC and added the following inbound rules to the associated security group:
I then made sure the Network ACL had inbound rules to allow traffic
Where I saw that * is a catch all rule so rule 100 should overwrite this. I then connected to my ec2 instance using EC2 Instance Connect and downloaded KafkaMagic and got it running on localhost:5000 of my ec2 instance. Using the public dns for the ec2 instance i connected to {publicIp}:5000 where publicIp was copy pasted. I was unable to connect.
Im assuming there is a gap in my understanding of what happened. Where did I go wrong along the way setting this up? Im very new to AWS and I might be missing an important concept
I needed to run the application on a non localhost url. I updated the kafka magic url through this link: https://www.kafkamagic.com/download/#configuration to be on 0.0.0.0:5000 and then I was able to use the public ip associated with my instance to run the application on port 5000
Related
I created an Elastic Beanstalk environment from Visual Studio and need to login to service the underlying ec2 vm.
I don't have an credentials for the server, so I wanted to use EC2 Instance Connect.
When I click connect, I get an error message:
We were unable to connect to your instance. Make sure that your instance’s network settings are configured correctly for EC2 Instance Connect. For more information, see Task 1: Configure network access to an instance.
Following the link, I found the instructions:
Ensure that the security group associated with your instance allows inbound SSH traffic on port 22 from your IP address or from your network.
(Amazon EC2 console browser-based client) We recommend that your instance allows inbound SSH traffic from the recommended IP block published for the service. Use the EC2_INSTANCE_CONNECT filter for the service parameter to get the IP address ranges in the EC2 Instance Connect subset.
How do I connect to the Elastic Beanstalk underlying EC2 via EC2 Instance Connect?
What I've tried:
I created a new security group that contains my client IP address, but that didn't work. Which makes sense, as it's the EC2 Instance Connect app running in the Console making the SSH connection, not my local machine.
Also looked at the the ip ranges json file (https://ip-ranges.amazonaws.com/ip-ranges.json), but not sure what to do with that.
I misunderstood the Set up EC2 Instance Connect instructions. This support article had clearer instructions: https://aws.amazon.com/premiumsupport/knowledge-center/ec2-instance-connect-troubleshooting/
Browser-based SSH connections require that your instance's security group inbound rules allow EC2 Instance Connect access to SSH on TCP port 22.
The key was to find the IP for EC2 Instance Connect and then create
a security group to whitelist that ip address.
EC2 Instance Connect IP can be retrieved via PowerShell by using Get-AWSPublicIpAddressRange (or curl). For us-west-2:
> Get-AWSPublicIpAddressRange -Region us-west-2 -ServiceKey EC2_INSTANCE_CONNECT | select IpPrefix
IpPrefix
--------
18.237.140.160/29
Once I configured my Security Group to use that Source I could connect.
Generally better way then using EC2 Instance Connect is through SSM System Manager. It does not require opening any inbound ports. Instead you should add/modify your install role to allow SSM to work. What's more you can control access to your instance using regular IAM permissions, unlike for EC2 Instance Connect.
Connection through SSM is in the same menu in the AWS console as EC2 Instance Connect. Thus, once you setup your instance role, wait few minutes for the instance to register with SSM, and once this happens you should be able to use SSM System Manager to connect to your instance from the console.
Regarding EC2 Instance Connect IP range. I don't know which range published applies only to EC2 Instance Connect. You would have to filter it by region probably and then find one which works. In worse case scenario its try-and-see approach.
I am trying to create a AWS file gateway using an EC2 instance. After the instance has been created, I am not able to connect to the instance using the IP address of the instance. I have edited my inbound rules to accept connections from the port 80, 3260,3389 and 443. Is there anything else i have missed ?
Not sure about your settings. But you can follow this link first Troubleshooting Connecting to Your Instance .
I have created a redis endpoint on amazon elastic cache and also setup vpc & NAT gateway. I need to connect created redis endpoint with redis-cli. i using command like this
redis-cli -h dev-redis.434dffsdsf.0094.ustyue1.cache.amazonaws.com
But i got error message like this
Could not connect to Redis at dev-redis.a35gy4.0001.use1.cache.amazonaws.com:6379: Connection timed out
I tried with several ways
tried to connect from my local ubuntu machine.
tried to connect from a ec2 instance.
My source code is running on aws lambda. Using aws lambda we can successfully connect to the same redis endpoint.
What is the actual issue with my redis client?
Please check SG of ElastiCache. Redis instance should be accessible to server where you're running Redis CLI.
Option 1 will not work, as ElastiCache instances are not accessible outside of their VPC. From the FAQs: "Amazon ElastiCache Nodes, deployed within a VPC, can never be accessed from the Internet or from EC2 Instances outside the VPC."
Option 2 should work, if the EC2 instance is within the same VPC as the ElastiCache instance.
Adding more details as none of the answers here gave me full clarity
What is security group - security group in AWS is like a firewall.
What should I check in the security group - Check in inbound rules of the security group attached to the Redis if port 6379 is open to IPs within the CIDR (e.g. 192.168.32.0/20) of the EC2 instance from which you tried to access the Redis/ElasticCache
I created a new instance of Amazon EC2 in Amazon Web Services (AWS) by referring to the documentation. I even added a SSH rule like this:
Port: 22
Type: SSH
Source: <My IP address>/32
I downloaded the .pem file, converted it into .ppk file by using PuTTYGEN. Then I added host name in PuTTY like this:
ec2-user#<public_DNS>
I selected default settings, added that .ppk file to PuTTY, logged in and I got this error:
Even trouble shooting link didn't help me.
I'm also getting this error in system logs:
How can I connect to my Amazon EC2 instance via PuTTY?
Things to check when trying to connect to an Amazon EC2 instance:
Security Group: Make sure the security group allows inbound access on the desired ports (eg 80, 22) for the appropriate IP address range (eg 0.0.0.0/0). This solves the majority of problems.
Public IP Address: Check that you're using the correct Public IP address for the instance. If the instance is stopped and started, it might receive a new Public IP address (depending on how it has been configured).
VPC Configuration: Accessing an EC2 instance that is launched inside a Virtual Private Cloud (VPC) requires:
An Internet Gateway
A routing table connecting the subnet to the Internet Gateway
NACLs (Network ACLS) that permit through-traffic
If you are able to launch and connect to another instance in the same subnet, then the VPC configuration would appear to be correct.
The other thing to check would be the actual configuration of the operating system on the instance itself. Some software may be affecting the configuration so that the web server / ssh daemon is not working correctly. Of course, that is hard to determine without connecting to the instance.
If you are launching from a standard Amazon Linux AMI, ssh would work correctly anytime. The web server (port 80) would require installation and configuration of software on the instance, which is your responsibility to maintain.
Ajay,
Try this. Go to your VPC dashboard. Click on Network ACLs - on the associated acl, update your Inbound Rules to allow SSH access on port22.
Go to vpc attached to instance and then add entry to route table with
0.0.0.0/0 - Destination
Internet Gateway of your VPC - As Target
Save It and try to connect it.
Go to VPC --> Security Group --> Edit inbound rules --> make the ssh source ip (anywhere) then save it and try to login with your putty-client. finally go back to your security group inbound rules and change the source IP from (anywhere) to (my ip) or any custom IP do you want then save it.
note: I assume that you have successfully stored and converted your private key
Security Group - This must accept traffic from your IP address
ex:
Protocol - SSH, PORT-22, IPAddress - SOME IP ALLOW
All Traffic On Any Port From 0.0.0.0/0 means from any IP Address ALLOW
Route Table - Make Sure you have outgoing traffic route enabled
ex:
Destination - 0.0.0.0
target- internet gateway
Use or generate private key
I struggled with this problem for ages after my EC2 instance suddenly started refusing a connection. I tried every answer on SO and Google but nothing helped!
The fix was to make sure that the Network ACL inbound rules were updated to match the rules on the security group.
I have no clue why it worked yesterday and stopped today, but this fixed it.
Could someone give a step-by-step procedure for connecting to elasticache.
I'm trying to connect to a redis elasticache node from inside my EC2 instance (sshed in). I'm getting Connection Timed Out errors each time, and I can't figure out what's wrong with how I've configured my AWS settings.
They are in different VPCs, but in my elasticache VPC, I have a custom TCP inbound rule at port 6379 to accept from anywhere. And the two VPCs share an Active Peer connection that I set up. What more am I intended to do?
EDIT:
I am trying to connect via the redis-cli command. I sshed in because I was originally trying to connect via the node-redis module since my EC2 instance hosts a node server. So officially my two attempts are 1. A scripted module and 2. The redis-cli command provided in the AWS documentation.
As far as I can tell, I have also set up the route tables correctly according to this: http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Route_Tables.html#route-tables-vpc-peering
You cannot connect to Elasticache from outside its VPC. It's a weird design decision on AWS' part, and although it's not documented well, it is documented here:
Amazon ElastiCache Nodes, deployed within a VPC, can never be accessed from the Internet or from EC2 Instances outside the VPC.
You can set your security groups to allow connections from everywhere, and it will look like it worked, but it won't matter or let you actually connect from outside the VPC (also a weird design decision).
In your Redis cluster properties you have a reference to the Security Group. Copy it.
In our EC2 instance you also have a Security Group. You should edit this Security Group and add the ID of the Redis Security Group as CIDR in the outbound connections + the port 6379.
This way the two Security Groups are linked and the connection can be established.
Two things we might forget when trying to connect to ElasticCache,
Configuring inbound TCP rule to allow incoming requests on port 6379
Adding EC2 security group in ElasticCache instance
Second one helped me.
Reference to (2) : https://www.youtube.com/watch?v=fxjsxtcgDoc&ab_channel=HendyIrawanSocialEnterprise
Here is step-by-step instructions for connection to Redis Elasticache cluster from EC2 inctance located in the same VPC as Elasticache:
Connect to a Elasticache Redis Cluster's Node