The SSH authorized_keys file is a file that contains a list of public keys that are authorized to log in to the server. This file is used to prevent unauthorized users from connecting to the SSH server. The primary purpose of this guide is to illustrate the use of the ~/.ssh/authorized_keys file. After reading …
Linux
How to list MAC address on Ubuntu Linux is a commonly asked question during a Linux job interview. Here are 3 methods to get the MAC address in Ubuntu Linux. These commands are safe to run without changing anything. Find MAC address on Ubuntu with ifconfig Get MAC address with ip link show Find MAC …
Recently we got some questions from our readers about how to check file size in Linux. How can I check the size of a file in Linux? How can I find the total size of all files and folders in a directory in Linux? How can I find out how much space a directory takes …
we can use kubeconfig configuration file to store information about different clusters, users, namespaces, and authentication mechanisms. Understanding kubeconfig A context element in a kubeconfig file is used to group access parameters under a convenient name. Each context has three parameters: cluster, namespace, and user. By default, the kubectl command-line tool uses parameters from the …
SSL Connection error is the most common error between client and server. SSL Connection error tells us that we are unable to make a secure connection with the server. It tells us what the issue is, but what makes it more difficult is that users don’t have an idea what exactly is causing this. In …
SSL_ERROR_SYSCALL typically occurs when the server side is using an SSL certificate to authenticate. This article covers how to fix SSL_ERROR_SYSCALL error in 5 ways. SSL_ERROR_SYSCALL Error $ git clone https://github.com/xxx/xxx.git fatal: unable to access ‘https://github.com/xxx/xxx.git/’: LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443 Understanding SSL_ERROR_SYSCALL Error This error typically occurs when the TCP three-way handshake between …
“Too many authentication failures” is an error message that can occur when trying to connect to an SSH server. It indicates that the client has attempted to authenticate with the server using too many incorrect authentication methods or keys, exceeding the server’s configured maximum. Let’s dive into this. When connecting to an SSH server, the …
Recently we got some questions from readers about how to check the Ubuntu version. How can I check the version of Ubuntu that I am running? What is the command to check the version of Ubuntu? How do I find out what version of Ubuntu I have? How can I tell which version of Ubuntu …
When the “Too Many Open Files” error message is written to the logs, it indicates that all available file handles for the process have been used (this includes sockets as well). In a majority of cases, this is the result of file handles being leaked by some part of the application. ulimit is a command …
If you have been having problems with your remote host identification, don’t worry – you are not alone. Many people are experiencing this issue right now. Luckily, there are a few ways that you can fix it. In this blog post, we will discuss three of the best methods for fixing this problem. understanding remote …