Knowledge Base

The cloud is a hot topic for small businesses all the way to global enterprises, but remains a broad concept that covers...

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...

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...

If you are using Zabbix for a long time, then you might notice that the database size of Zabbix is increasing every day. Then...

In August 2019, NGINX Updates Mitigate in many implementations of HTTP/2. NGINX and Cloudflare are aware in this Mandatory case, Fortunately, For...

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...

This is enabled by default, but you can disable it in one of a couple ways.

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...

Overview The two most commonly used high availability (HA) cluster configurations are active-active and active-passive. What’s the difference between...

for loop syntax How do I use bash for loop to repeat certain task...

Global :help keyword – open help for keyword:saveas file – save file as:close – close current paneK – open man page for word under the cursor

If you’re an email marketer or maybe troubleshooting with email issue, you’ve probably heard acronyms like “SPF,”...