Fernando Duran fduran
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| # www.fduran.com | |
| # Block an external attacker's IP address (1.2.3.4) with netfilter (iptables) | |
| /sbin/iptables --append INPUT --source 1.2.3.4 -j DROP |
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| # www.fduran.com | |
| # mysql status summary | |
| mysqladmin -u root -pthepasswd process status | |
| # check database mydb | |
| /etc/init.d/mysqld stop; cd /var/lib/mysql; myisamchk --silent --force mydb/*.MYI | |
| # repair mydb | |
| /etc/init.d/mysqld start; mysqlcheck -u root -pthepassed --auto-repair --check --optimize --databases mydb |
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| # www.fduran.com | |
| # disk space usage | |
| df -h | |
| # biggest (10) directories in size (MB) | |
| du -mxS / | sort -n | tail -10 | |
| # clean package cache | |
| apt-get clean |
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| # www.fduran.com | |
| # apache password protect directory | |
| # Apache config | |
| <Directory /home/user/public_html> | |
| AllowOverride AuthConfig | |
| # ... | |
| </Directory> | |
| Alias /protected "/home/user/public_html/protected" |
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| # www.fduran.com | |
| # Heroku notes for python, fixes http://devcenter.heroku.com/articles/python | |
| # Ubuntu 11.04 (Natty Narwhal) | |
| mkdir heroku | |
| cd heroku | |
| # Prerequisites | |
| curl -O https://raw.github.com/pypa/virtualenv/master/virtualenv.py | |
| cp virtualenv.py /usr/bin/virtualenv |
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| # www.fduran.com | |
| # Linux shell "here" document | |
| $ cat > newfile << EOF | |
| > write something | |
| > EOF | |
| # obv also: | |
| $ cat > newfile | |
| # and Ctr-D |
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| # www.fduran.com | |
| # Linux check DNS cache snooping | |
| # check if somedomain (try popular ones like google.com etc) is cached in a dns_server | |
| # with nslookup | |
| nslookup -norecurse somedomain dns_server | |
| # with dig | |
| dig @dns_server somedomain A +norecurse |
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| www.fduran.com | |
| Monitoring Plesk with Monit | |
| Plesk is not mentioned anywhere in monit's site http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=plesk+site%3Ammonit.com and I couldn't find any article or tutorial about how to monitor Plesk using Monit, so I'm writing one myself in the hopes other people with the same problem find it. | |
| Plesk 8.3 on Centos5 | |
| etc/init.d/psa status | |
| psa dead but subsys locked |
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| www.fduran.com | |
| Remote syslogging in Linux | |
| 1. On logging server 'logserver': | |
| # nano /etc/rsyslog.conf | |
| uncomment: | |
| # provides UDP syslog reception | |
| $ModLoad imudp | |
| $UDPServerRun 514 |
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| # www.fduran.com | |
| # Linux honeypots | |
| # nephentes | |
| # (google 'nephentes honepot') | |
| apt-get update; apt-get install nepenthes | |
| nano /etc/nepenthes/nepenthes.conf | |
| /etc/init.d/nepenthes restart | |
| #log: less /var/log/nepenthes.log |