Load balancer
Load Balancer is used to distribute incoming traffic to multiple backend servers. Here are some of the popular software load balancers https://nginx.org/…
Blog
CentovaCast change MySQL password
CentovaCast is a control panel to manage online streaming services. It support shoucast, liqudsoap and icecast streaming servers. To change MySQL Password…
Can’t locate version.pm in @INC
I got error “Can’t locate version.pm in @INC” running awk. [root@vmi431969 /]# ack mp3pdjSu5B0 Can’t locate version.pm in @INC (@INC contains: /usr/local/lib64/perl5…
Wildcard DNS zone in bind
Wildcard DNS zone will act as authoritative DNS for any domain name. This is useful when you have a service like domain…
Amazon EC2 disk resize No space left on device
On an Amazon EC2 instamce disk usage was full. root@ip-172-31-46-249:/# df -h Filesystem Size Used Avail Use% Mounted on udev 3.9G 0…
Disable sshd start on boot in ubuntu
On my local computer, i have installed openssh-server, but i don’t want it always enabled. To disable openssh-server from auto start on…
Plesk Mail not working amavis error
When sending email from a Plesk server, i get error Aug 11 19:49:28 vmi274961 postfix/smtp[29276]: E413C3320265: to=, relay=none, delay=0.47, delays=0.47/0/0/0, dsn=4.4.1, status=deferred…
Upgrade centovacast
To upgrade centovacast installation, run /usr/local/centovacast/sbin/update If you don’t want to upgrade shotcast/icecast/luquidsoap, you can run for f in /usr/local/centovacast/etc/update.d/80*; do mv…
Set Magento 2 in Production Mode
To see current mode in Magento 2, run php bin/magento deploy:mode:show Example To set Magento 2 in production mode, run php bin/magento…
Magento 2 Change Email of an Admin user
To change email address of an admin user, run following SQL in MySQL command promt or in phpMyAdmin update admin_user set email=’NEW_EMAIL_ADDR_HERE’…
Magento 2 Disable Two-Factor Authentication
Magento 2.4.0 come with Two-Factor authentication. Once you installed Magento 2.4.0 or latest you will be asked to setup Two-Factor Autentication. To…
journalctl
To see systemd logs, run To see a service specific logs (example postfix) To see logs for a specific service, run Logs…