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Linux Time
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Knowledge Base
Disk Utility
MegaCLI CheatSheet
Feri Setyawan
-
May 19, 2021
Disk Utility
Managing Journal Systemd Ubuntu
Feri Setyawan
-
October 9, 2020
Knowledge Base
Monitoring Cisco ASA Firewall With Nagios Web Application
Feri Setyawan
-
August 8, 2020
Email
Reading and Understanding the exim main_log
Feri Setyawan
-
August 4, 2020
Knowledge Base
List of Free E-Commerce
Feri Setyawan
-
June 23, 2020
Knowledge Base
SaaS vs PaaS vs IaaS: What’s The Difference
Feri Setyawan
-
May 6, 2020
0
The cloud is a hot topic for small businesses all the way to global enterprises, but remains a broad concept that covers...
Read more
How to
Proxmox 6.0 Bug, hung kernel and how to fix it.
Feri Setyawan
-
March 30, 2020
0
We have been running Proxmox 6.0 in some servers and after a few weeks, they were having a hung issue. one-by-one all...
Read more
Disk Utility
How to enable write cache for 3ware Raid controller
Feri Setyawan
-
March 24, 2020
0
You can check the current cache status and then enable or disable it using the 3ware command line utility tw_cli. First lets see how...
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How to
Delete OLD data from Zabbix database
Feri Setyawan
-
March 24, 2020
0
If you are using Zabbix for a long time, then you might notice that the database size of Zabbix is increasing every day. Then...
Read more
Knowledge Base
HTTP/2 Vulnerabilities in Nginx
Feri Setyawan
-
March 24, 2020
0
In August 2019, NGINX Updates Mitigate in many implementations of HTTP/2. NGINX and Cloudflare are aware in this Mandatory case, Fortunately, For...
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Firewall
Ubuntu updates for TCP SACK Panic vulnerabilities
Feri Setyawan
-
March 24, 2020
0
14.04 , 16.04 , 18.04 , ESM , Extended Security Maintenance , livepatch , sack panic , Security , TCP Sack Panic , Trusty Tahr Issues have been identified in the way the Linux kernel’s TCP implementation...
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Knowledge Base
Security Advisory – TCP SACK PANIC – Kernel vulnerabilities – CVE-2019-11477, CVE-2019-11478 & CVE-2019-11479
Feri Setyawan
-
March 24, 2020
0
Redhat Ubuntu reference:https://access.redhat.com/security/vulnerabilities/tcpsackhttps://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-11477.htmlhttps://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md Primarily Impacted Products Red Hat...
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Knowledge Base
Active-Active vs Active-Passive High Availability Cluster
Feri Setyawan
-
March 24, 2020
0
Overview The two most commonly used high availability (HA) cluster configurations are active-active and active-passive. What’s the difference between...
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Database
Disable MySQL Strict Mode
Feri Setyawan
-
March 24, 2020
0
This is enabled by default, but you can disable it in one of a couple ways.
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Knowledge Base
Bash For Loop Examples
Feri Setyawan
-
March 24, 2020
0
for loop syntax How do I use bash for loop to repeat certain task...
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Knowledge Base
Vim Cheat Sheet
Feri Setyawan
-
March 24, 2020
0
Global :help keyword – open help for keyword:saveas file – save file as:close – close current paneK – open man page for word under the cursor
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Email
The 3 Pillars of Email Authentication: SPF, DKIM, DMARC
Feri Setyawan
-
March 24, 2020
0
If you’re an email marketer or maybe troubleshooting with email issue, you’ve probably heard acronyms like “SPF,”...
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Most Read
Please install all available updates for your release before upgrading
How to
Feri Setyawan
-
March 4, 2023
0
The Problem: While upgrading the Ubuntu OS version, I faced the following issue with the do-release-upgrade command. Even all the current...
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How To Import QCOW2 Image Into Proxmox
How to
Feri Setyawan
-
September 27, 2022
0
In this guide, we will see how to import QCOW2 into Proxmox hypervisor and how to create a virtual machine using the QCOW2 image...
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Remove frozen emails from mail queue – Exim
Email
admin
-
August 24, 2022
0
Emails can build up for a variety of different reasons but mainly results from emails which were undelivered. When...
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Safe Reboot Of Linux Using Magic SysRq Key
How to
Feri Setyawan
-
January 8, 2022
0
If you are working on kernel development, or device drivers, or running a code that could cause a kernel panic, the SysRq...
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