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[SOLVED] Fix Kubernetes Flannel & CoreDNS Failure with Error: x509: certificate is valid for <subnet_ip_1>, <node_ip>, not <subnet_ip_2>
Use the correct cluster configuration for your control plane when regenerating new certificates
JavaScript: Remove element from Array - by index / value / position / range / filter function (programmatically)
Many ways to remove items from a JavaScript array
[SOLVED] Fix Kubernetes Client Certificates Issue with Error: Part of the existing bootstrap client certificate is expired ... failed to run Kubelet: unable to load bootstrap kubeconfig: stat /etc/kubernetes/bootstrap-kubelet.conf: no such file or directory
Renew the expiring/expired Kubernetes PKI (client certificates & keys)
[SOLVED] Fix npm ERR! code EINTEGRITY
, integrity checksum failed
, tarball data seems to be corrupted
, npm ERR! shasum check failed
, npm WARN registry Unexpected warning
issues during npm install
Clean npm cache, node_modules, package-lock.json files to recover from all ‘npm ERR! code EINTEGRITY’ error messages during ‘npm install’
Install curl, vim (vi), wget, nano, bash on Alpine Docker Container
Run curl, vim (vi), wget, nano, bash on Alpine Docker Containers
Install Node.js on Ubuntu / Debian
This quick tutorial guides you to install Node.js on any Debian-based linux distro.
Podman: Run Node.js application (Hello World Express server)
Run Node.js application (Hello World Express server) on Podman container
Docker: Run Node.js application (Hello World Express server)
Run Node.js application (Hello World Express server) on Docker container
Docker Rename Image / Container
Rename Docker image and container names
Upgrade Ubuntu 19.10 & 18.04 To Ubuntu 20.04 LTS
Upgrade your existing Ubuntu 18.04 / 19.10 installation to Ubuntu 20.04 LTS Focal Fossa
Docker - Oracle Database Client For Creating Instant Database Connections
Connect Any Local/Remote Oracle Database Using Oracle’s Docker Client (You don’t need SQL Developer/TOAD GUI again!)
An Easy Way To Simulate TCP and UDP Servers on Linux
3 Easy Ways To Simulate TCP and UDP Server on Linux
Easy Ways To Simulate TCP and UDP Clients on Linux
3 Easy Ways To Simulate TCP and UDP Clients on Linux
Update Node.js Version to 10/12/13 on Linux ( Ubuntu / Debian / Mint / CentOS / RHEL )
Update Node.js 10/12/13 on Linux
Install Node.js 10/12/13 on Linux ( Ubuntu / Debian /Mint / CentOS / RHEL )
Install Node.js 10/12/13 on Linux
Install Angular 9 on Linux ( Ubuntu / Debian / Mint / CentOS / RHEL / SuSE Linux )
Install Angular 9 on Linux
Forward MongoDB Logs to Remote/Local Syslog Server using Rsyslog on Linux
Use rsyslog to forward MongoDB logs to remote/local syslog server on Linux
[SOLVED] Fix JavaScript Heap Out Of Memory, NodeJS Heap Overuse, NPM Install & Build Scripts Getting Stuck/Slow Issues By Limiting Max_old_space_size
Limit heap usage of JavaScript apps (including Node.js, Angular, React, Vue, Ember, Meteor, Polymer) and get rid of performance issues in NPM scripts & N...
NodeJS UDP Client & Server Example using dgram
The dgram module provides an implementation of UDP Datagram sockets.
Linux TCP/UDP Client & Server Connections using Netcat
Netcat is the most convenient TCP/UDP connection simulation tool that you can find for Linux terminal.
Send TCP/UDP Packets on Linux using /dev/tcp & /dev/udp Pseudo Devices
Pseudo tools like /dev/tcp & /dev/udp can be used to easily send an instant TCP/UDP packet on Linux terminal.
Oracle DB: Create New Users, Assign Roles, Privileges, and Table Spaces
How To Create New Users, Assign Tables, And Grant Privileges on Oracle Database
AWS EC2: Increase Disk Sizes
Increase or decrease the disk volume sizes of AWS EC2 instances.
Linux: Port Scan with NMap and Netcat
NMap and Netcat (NCat) are Linux CLI tools for port scanning, fingerprinting OS’s, and even vulnerability scanning.
Linux: Setup Restricted SFTP Server with OpenSSH, Chroot Jail, and File Permissions
SFTP (SSH File Transfer Protocol) implements FTP commands that can be used over SSH protocol and is more secure than general file transfer protocols like FTP...
Linux: Open Firewall Ports of RHEL/CentOS/Ubuntu/Debian Servers on-Cloud & on-Prem
Use FirewallD and UFW to easily open Firewall ports in Linux Servers.
AWS EC2: Open Firewall Ports
Use AWS EC2 Management Console to open Firewall ports of cloud servers.
Docker Oracle: Run Oracle Database (Enterprise Edition) On Docker
Run an Oracle Database (Enterprise Edition) instance on Docker.
Java: Install JDK 12 on Ubuntu, Debian, Mint, RedHat, and SuSE Linux
Install OpenJDK 12 and Oracle JDK 12 on your Linux machine (Ubuntu, Debian, Mint, RedHat, SuSE Linux)