How do fsck at corrupted vm guest in Oracle OVM or Xen Server from vm images.
Hello guys! Sometimes after an incident in Oracle OVM could be that some virtual machines will go in corrupted and it will need to do an fsck about one o… Read more »
Tag: Debian
What are transparent hugepages?
“Transparent Hugepages” is a Linux kernel feature intended to improve performance by making more efficient use of your processor’s memory-mapping hardware. It is enabled (“enabled=always”) by default in most Linux… Read more »
Debian 10: How to disable transparent hugepages
“Transparent Hugepages” is a Linux kernel feature intended to improve performance by making more efficient use of your processor’s memory-mapping hardware. It is enabled (“enabled=always”) by default in most Linux… Read more »
Delete unmapped multipath drive: couldn’t get target port group
When we go to delete a lun that is no longer mapped, we may get this error sdXX: couldn’t get asymmetric access stateAfter unmapping the LUN from the SAN storage… Read more »
Apache 2.4 Web Server Hardening and Security Guide
The Web Server is a crucial part of web-based applications. Apache Web Server is often placed at the edge of the network hence it becomes one of the most vulnerable… Read more »
How to display processes using swap space
Identify and print processes using swap space to get a better understanding of the Linux operating system. Display processes using swap space Use the following command to simply display processes… Read more »
Tuning MongoDb for Linux
In this post, we’ll discuss tuning Linux for MongoDB deployments. By far the most common operating system you’ll see MongoDB running on is Linux 2.6,3.x. and 4.x (only Oracle Linux… Read more »
iptables blacklist script
A Bash shell script which uses ipset and iptables to ban a large number of IP addresses published in IP blacklists. ipset uses a hashtable to store/fetch IP addresses and… Read more »