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Connecting to Linux server with PEM/PPK file
When you create an EC2 instance or receive access details to your server / instance from our support you also receive a private key file ( with extension...
Sat, 4 Oct, 2014 at 9:33 PM
updating Jerusalem daylight time with a correct timezone file for 2013 in ubuntu
mkdir $HOME/dstfix2013 cd $HOME/dstfix2013 wget -N ftp://ftp.iana.org/tz/data/asia sudo zic asia verify that last date rage was changed: ...
Sun, 29 Sep, 2013 at 2:54 PM
To Use or not to Use a EIP with the AWS instance.
The Cases when EIP strongly needed: More than one domain will be pointed directly to the instance. We do not have a credentials to the access to the D...
Thu, 29 Oct, 2015 at 9:51 AM
How-to increase "Open Files Limit” on Linux machines
First we start with user binding limit. Edit: /etc/security/limits.conf check if you have a section lines similar to: *    hard     ...
Mon, 27 Jun, 2016 at 3:03 PM
Umask settings for web servers
Problem: Often there is a situation that we have files created by web server with owner www-data:www-data and default access mode 0644 and we need provide...
Mon, 9 Jan, 2017 at 1:01 PM
NAT/VPN and source/dest check in AWS
Anytime when you creating AWS instance for NAT and/or VPN you must check and disable "source/dest check" option in network settings of instance.
Mon, 29 Jan, 2018 at 9:32 AM
Conver MySQL query result to csv
echo 'SELECT * FROM `table`'; | mysql DB_NAME | tr -d '\r'  | sed 's/"/""/g;s/\t/","/g;s/^/\"/;s/$/\"...
Tue, 9 Oct, 2018 at 12:01 PM
Free SSL with AWS ACM
AWS Certificate Manager is a service that lets you set an SSL certificate for free, an alternative to letsencrypt. It issues the certificate for a year, unl...
Tue, 2 Apr, 2019 at 6:12 AM
WireGuard - "RTNETLINK answers: Operation not supported"
When trying to establish a WireGuard VPN connection using a "wg-quick" and receive the following error : RNETLINK answers: Operation not su...
Thu, 7 May, 2020 at 3:47 PM