Category: Webserver

host -t mx mydomain.com nslookup -q=mx mydomain.com dig -t mx mydomain.com http://superuser.com/questions/44178/how-do-i-get-the-mx-records-for-a-domain-from-nix-command-line

login to local database mysql -u username -p; # connect to MySQL-Server@localhost, it will ask you for password login to a remote database mysql -u username -h your-server.de -p; # connect to a remote MySQL-Server@your-server.de, it will ask you for […]

the problem is on a hetzner Q7 Server with as little as 512MB RAM, MySQL keeps crashin. what can you do? repartition? -> DANGEROUS and almost impossible without powering down the system. also: one might want to create a virtual […]

I wanted to copy everything off the disk and send it over the network. So we can do it with ssh. First zero out the non used space on the running disk to make compressing the image much eaiser. Using […]

backups take a aweful lot of space… to reduce the amounts of backups made: login to vesta cp -> click on packages (top left corner) and edit all packages settings to only have 1 backup made 😉 dada 🙂 – […]

vesta cp was uninstalled a long time ago (it’s update server was hacked, after that it seems the vestacp developers did not want to invest in it anymore, very sad, was a great webserver and mail control panel) ntp things […]

if fail2ban fails to ban: https://dwaves.de/2017/07/27/centos7-replaced-firewall-iptables-with-firewalld-iptables-vs-nftables-benchmark-performance-comparison-scalability-when-facing-ddos-scenarios KEEP IN MIND: OVERLOAD OF WEBSERVER MIGHT BE FROM BRUTEFORCE OR DDoS!!! (512MB RAM was “enogh RAM” for a webserver in those days X-D) sudden spikes of (botnet) traffic might deplete your RAM via […]

The problem is that your hostname is not pingable. System can not resolve the name. You can fix it by adding hostname to the /etc/hosts/file. Hostname should be associated with the system ip /usr/local/vesta/bin/v-list-sys-ips; # list system ips IP NETMASK […]

this is the way you can export/backup and import/restore a single/all databases: backup and restore a single database (one by one): mysqldump -u root –password=mysql-root-password database_name > dumpfilename.sql restore: (you will need to find out the password for the mysql-root […]

Carambola1 (32MByte) the smallest possible webserver. (lighttpd + php5 working) So here is how you connect to carambola / OpenWRT. TO CLARIFY: THIS CARAMBOLA-WIKI-ENTRY SAYS: “From factory Carambola is shipped with ttyS0 disabled. Or to be more precise it is in […]