Telnet UDP Port

Unfortunately telnet will only allow to test ports for TCP. On the contrary nc can test ports for both TCP and UDP. TCP # nc -z -v -u [hostname/IP address] [port number] # nc -z -v 192.168.10.12 22 Connection to 192.118.20.95 22 port [tcp/ssh] succeeded! UDP # nc -z -v [hostname/IP address]…

Script Notifikasi Password Expire pada Zimbra Mail Server

By default, Zimbra belum memiliki fasilitas notifikasi password apabila password user mendekati expire. Namun, fasilitas tersebut cukup dibutuhkan untuk memudahkan atau sekedar pemberitahuan pada user sebelum passwordnya expire. Untuk mendapatkan fasilitas tersebut, dapat dibuatkan sebuah script untuk melakukan pengecekan expire date password user dan mengirimkan hasilnya via email. Script tersebut sudah ada…

How to Install MySQL 5.7 on Ubuntu 20.04 LTS

Introduction MySQL is the world’s most popular open source relational database management system. It is widely used with web server like apache2,Nginx,IIS,etc. MySQL has client/Server architecture , supports InnoDB storage engine,can be installed on various operating system like Ubuntu,Debian,CentOS,Windows.,etc. Step #1: Add MySQL APT Repository in Ubuntu Ubuntu comes with…

Cannot open the disk Reason: The parent virtual disk has been modified since the child was created.

mismatch, modified, parent CID, snapshot, virtual machine, vmware, vsphere If you get the following error when starting a virtual machine you can try the solution given below: “Message on VMName: Cannot open the disk ‘/vmfs/volumes/Volume-ID/VM Name/VMName-000001.vmdk’ or one of the snapshot disks it depends on. Reason: The parent virtual disk has been modified since the child…