AWS

How to connect aws ec2 instance Linux server console

In traditional Data center environment , VM ware and other cloud providers like Azure having options to connect Linux virtual server serial console . Through IMM console or through web browser or through some application call . Normally why we want to connect with Linux server console? If you are unable to reach your instance via ssh , problem diagnostics…

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AWS

How to attach role to AWS EC2 instance after launching

Few years back this feature was not available in AWS .Once instance launched with particular role you can not replace . Need to launch the instance with required role .This is really challenge task in real time scenario Now Amazon enabled this beautiful features . So you can attache or replace the role to instance anytime even in EC2 instance…

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AWS

ssh_exchange_identification: read: Connection reset by peer aws

There is lot of possibilities for this type of error . You can try below steps one by one. As a first step check what is really going on while establishing ssh connection. Ex: 1.ssh -v -i /home/cent/keys/my-key.ppk user@192.168.1.2 2. Check the public and private keys are proper ,correct pair , also check the permission of the keys.3.IP of the…

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Common, EC2

AWS EC2 tagging best practices

    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…

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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.…

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EC2

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…

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EC2

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 .…

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EC2

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…

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EC2

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…

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Compute, EC2

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…

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EC2

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…

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AWS Network, Compute

Configure multiple AWS EC2 Elastic Network Interface ENI in Linux

    Configure multiple AWS EC2 Elastic Network Interface ENI in Linux AWS EC2 instance by-default will have one ENI with private / public IP address .In some cases need 2 or more separate IP address for high availability solutions, multiple web deployments or to separate the management ,administration and public traffic .In AWS we can create additional ENI NIC…

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EC2

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…

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Compute, EC2

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…

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