Virtualbox: can’t remove / attach new hard disk
When i try to remove a disk in Virtualbox with this command: I got the following error And the fix…
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DNS: Why i can’t create txt record for sub domain?
Please check if your subdomain is a CNAME , the DNS rule does not allow CNAME record to have other…
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cricket – rrdcached: some info in mind
rrdcached is a daemon that receives updates to existing RRD files, accumulates them and, if enough have been received or…
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A detailed page about PHP thread.
### A Detailed Page About PHP Threads: Understanding Multithreading in PHP PHP is one of the most widely used server-side…
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Mysql import from 5.6 to 5.7 : Column count of mysql.user is wrong. Expected 42, found 44. The table is probably corrupted
You might receive the error Column count of mysql.user is wrong. Expected 42, found 44. The table is probably corrupted…
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Samsung J7 dead after not using for long time.
I had a samsung J7, it’s in the drawer for many months. today i tried to charge it, there was…
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How to read rrd file?
[crayon-687ae05baaca0828880466/] [crayon-687ae05baaca3050790863/] this command will get the avg value of ds1 (ds1 is the dataset – you can see…
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Ubuntu 18.04 : how to run start up script
Create a service: [crayon-687ae05baad9e218499347/] Add your code there: [crayon-687ae05baada0381739689/] Create and make sure /etc/rc.local is executable and add this code inside it:…
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GRE keepalives in an existing IPsec tunnel
When you setup a GRE tunnel through an existing ipsec – the keepalives should be turn off , if you…
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IPsec between Strongswan on AWS and Cisco IOS behind a NAT
My Strongswan : Local IP: 172.30.0.37 Elastic IP: 19.215.188.2 OS: Ubuntu My WAN: – Customer grade broadband Internet – Public…