AWS EC2 tagging best practices Tags provide identification and classification of AWS resources by the association of descriptive metadata.for example, application identifier, environment, or owner. Each tag consists of a key and a value, both of which are user-defined strings. Tags can be used as a filter when requesting resources, such as EC2 instances, based on tag keys…
Category: EC2
AWS EC2 Error: Host key not found, Permission denied (publickey), or Authentication failed, permission denied
Host key not found, Permission denied If you connect to your instance using SSH and get any of the following errors Host key not found in [directory] Permission denied (publickey) Authentication failed, permission denied possible reasons: Check the keypair name in Description filed of your instance , and verify that you are using the correct private key file.…
AWS EC2 Error: User key not recognized by server
Error: User key not recognized by server This error occurs when you are connecting ssh to AWS EC2 instalce Linux servers .Mostly the key you are submitting to connect your instance not recognized by server. You can get more details while you connecting to instance using ssh -vvv option ssh -vvv -i [your key name].pem ec2-user@[public DNS address…
Error connecting to your instance: Connection timed out
Error connecting to your instance: Connection timed out This is one of most common error which we use to get when you try to connect your AWS EC2 cloud instance. “Network error: Connection timed out or Error connecting to [instance], reason: -> Connection timed out: ” The reason could be from below any one First Check your security group rules .…
AWS EC2 Instance Immediately Terminates
AWS EC2 Instance Immediately Terminates After launching an instance normally the status will change from pending state to running . But in sometime the status will goes to terminate state suddenly . You can find the information from your AWS console by using “EC2 console screen logs” or you can use CLI , you can find with JSON…
Amazon Time Sync Service
Amazon Time Sync Service Amazon provides the Amazon Time Sync Service, which you can access from your instance. This service uses a fleet of satellite-connected and atomic reference clocks in each AWS Region to deliver accurate current time readings of the Coordinated Universal Time (UTC) global standard through Network Time Protocol (NTP). The Amazon Time Sync Service automatically…
what is t2 unlimited in AWS EC2 t2 instance type?
what is t2 unlimited in AWS EC2 t2 instance type? AWS recently introduced “t2 unlimited concept” in t2 series. The advantage in t2 series is “burst capability” when comparing with other instance type.So whenever load comes it can burst the CPU to handle the load . It will utilize the cpu credit to provide high performance . But…
Error: Server refused our key or No supported authentication methods available
Error: Server refused our key or No supported authentication methods available When try to connect AWS EC2 Linux instance sometimes you may come across this error. Server refused our key or Error: No supported authentication methods available Most of the time reason could be incorrect AMI user name. below are the default user names for different flavor Linux. Try to…
AWS EC2 Shared , Dedicated Instance , Dedicated Host difference
AWS EC2 Shared , Dedicated Instance , Dedicated Host difference In this article we will go-through what is AWS EC2 Shared , Dedicated Instance , Dedicated Host and difference between them .AWS has 3 types of EC2 tenancy model . Actually this will explain how your actual virtual server (EC2) hosted in real physical server.Depends on tenancy type…
Status Check Failed (Instance)" aws ec2
Status Check Failed (Instance)” aws ec2 Normally Instance Status Check’ verifies that your instance’s operating system is accepting traffic. When it fails it means that the operating system inside the instance is not responding to traffic, for example this can happen when a Windows instance hangs or when a Linux instance kernel panics or network is disabled inside the…
EC2 Failing instance status checks
EC2 Failing instance status checks I hope most of the administrators may come across this issue in AWS ” EC2 Failing instance status checks” . Why this issue occurring ? Yes , there could be multiple reason for each operating system . But one of the frequent reason would be Operating System fail to boot. Remeber you are just…
Unable to ssh/ping to my aws ec2 instance
Everyone come across this issue in day to day job.There could be multiple reason for this issue .”Unable to ssh/ping to my ec2 instance ” .First you need to look out what kind of error message you are getting . If you read the error message carefully we can shortout easily . Otherwise we have to check all the possible…
What is EBS optimized instance in AWS?
What is EBS optimized instance in AWS? Normally not all the instances EBS optimized instance type in AWS. Only specific ec2 instance types are EBS optimized. This will trigger another question ,how EBS disks are connecting with ec2? Through ec2 instance network cards only. So your network traffic and EBS data traffic will use same NIC card. But the…
Launching a new EC2 instance. Status Reason: Your quota allows for 0 more running instance(s). You requested at least 1. Launching EC2 instance failed
Launching a new EC2 instance. Status Reason: Your quota allows for 0 more running instance(s). You requested at least 1. Launching EC2 instance failed This error may comes while instance launching manually or through auto scale as well . The reason is you reached on-demand running instance limit on that specific region . You need to increase the…
How to launch EC2 instance in AWS
How to launch EC2 instance in AWS Hello! In this post we will see how to launch AWS EC2 instance in the cloud and how to connect . It’s very simple . You can launch in GUI graphical mode . Also you can launch from AWS CLI or through API calls as well. In this example we will launch Redhat…