Performance tuning wildfly

 from here :

performance tuning performance tuning for jboss or wildfly

here summary :

The fine-tuned configurations that we recommend for optimizing the performance of the JBoss or Wildfly application server are:
 

1.     Recommended JVM Settings
2.     Open Files
3.     Maximum User Processes
4.     Connection Backlog
5.     Set TCP_KEEPALIVE_INTERVAL
6.     Set TCP_KEEPALIVE_PROBES
7.     Allocate Huge Pages for Java Virtual Machine (JVM) Heap
8.     Increase Linux kernel Entropy
9.     Test Entropy

wildfly memory jvm setting

 from here :

wildfly-increase-heap

In the WildFly installation home directory, we can find the standalone.conf (for Unix based systems) or standalone.conf.bat (for Windows systems) file in the bin folder.

We can simply open it and update the -Xmx option in the following line (change the number as per the requirement):

    JAVA_OPTS="-Xms64m -Xmx512m ..."

This will set the heap memory while starting up the server.

epson L220 printer driver

here :

driver for epson L220 all in one printer

download

resize - shrink vmdk in vmware

here:

increasing disk size 

shrink disk size

note: always test first ini non production server.

How To Resize And Create Partitions With Gnome Partition Editor (GParted) - linux

here :

How To Resize And Create Partitions With Gnome Partition Editor (GParted)

test first in non production server.

resource files for sysadmin

here from linux user group .ph :

Pinoy Linux - resource files for sysadmin

securing fresh install centos 7

here for guideline:

Securing fresh install centos 7

always check &test for configuration after change configuration

Opensource sysadmin Library

Please check here :

Open Source SysAdmin Resources

many list of resource stuff that you may need.

free or Opensource Desktop management software

 1. Chocolatey - https://chocolatey.org
 2. just-install - https://just-install.github.io/
 3. WAPT - https://www.tranquil.it/en/price/
 4. Opsi - https://www.opsi.org/
 5. WPKG - https://wpkg.org/
 6. desktop central free edition
 7. PDQ Deply

please test which ne suit for your need.
popularity comparison check in here:
https://sysadmin.libhunt.com/categories/1967-client-management

How to export a Virtual Machine using the VMware OVF Tool

export virtual machine in ovf format, using this manual :
How to export a Virtual Machine using the VMware OVF Tool

thanks to mulcas blog.