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Can't connect to AWS RDS instance - Tips to fix it ?


This article covers methods to resolve "Can't connect to AWS RDS instance" error for our Customers. If either the telnet or nc commands succeed, then a network connection was established. This means the issue is likely caused by the user authentication to the database, such as user name and password.

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ec2 key permission denied – "Authentication failed, permission denied"


This article covers method to fix the error, ec2 key permission denied. 

"Permission denied (publickey)" and "Authentication failed, permission denied" errors occur if:

  • You're trying to connect using the wrong user name for your AMI.
  • The permissions are incorrect on the instance.
  • The incorrect SSH public key (.pub) file is in the authorized_keys file.


To fix this error, simply:

  • Verify that you're using the correct user name for your AMI.
  • Also Verify that the instance's permissions are correct and that the correct SSH public key is in the authorized_keys file.

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An error occurred when calling the RevokeSecurityGroupIngress operation Steps to fix this aws error


This article will guide you on the steps to fix the AWS error "An error occurred when calling the RevokeSecurityGroupIngress operation" which shows that the target security group doesn’t have an inbound rule, or isn’t located in the default Amazon Virtual Private Cloud (Amazon VPC).

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Rclone installation process


Rclone is an open-source command line tool which helps to sync files to cloud storage which is makes data migration between storage spaces easy.

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How to Fix Boot Hole vulnerability CVE-2020-1073


Just recently, on the 29th, July 2020, Popular Linux Distribution RedHat announced that there was a great security concern in the grub2 (CVE-2020-1073) version.

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For Linux Tutorials

We create Linux HowTos and Tutorials for Sys Admins. Visit us on LinuxAPT.com

Also for Tech related tips, Visit forum.outsourcepath.com or General Technical tips on www.outsourcepath.com






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