iptables -A INPUT -j ACCEPT -p tcp –dport 80 -m state –state NEW -m limit –limit 40/s –limit-burst 5 -m comment –comment ‘Allow incoming HTTP’
iptables -A INPUT -j ACCEPT -p tcp –dport 443 -m state –state NEW -m limit –limit 40/s –limit-burst 5 -m comment –comment ‘Allow incoming HTTPS’
Also useful:
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -j ACCEPT -m state –state RELATED,ESTABLISHED -m limit –limit 100/s –limit-burst 50
Simple repair wouldn’t help, because you will get errors like: repair ‘Error Can’t open table’ or ‘error Corrupt’
cd /var/lib/mysql/database_name
touch broken_table.MYI
touch broken_table.MYD
chown mysql:mysql broken_table.*
mysql -u mysql_user -pXXXXXX -e “REPAIR TABLE broken_table USE_FRM” -B database_name
mysql -u mysql_user -pXXXXXX -e “SELECT TABLE_NAME, ENGINE FROM information_schema.TABLES where TABLE_SCHEMA = ‘database_name'”
cd /usr/local/directadmin/custombuild
./build update
./build versions
./build update_versions
varnishd -C -f /etc/varnish/default.vcl
ETHTOOL_OPTS=”speed 1000 duplex full autoneg off”
nginx -t
ps aux | grep nginx
kill -HUP master_nginx_proccess
Preferences / SEO & URLs
Set up URLs:
Friendly URL YES
Accented URL YES
Automatically redirect to the canonical URL YES
Disable apache multiviews YES
Disable apache mod security YES
Smarty Cache:
Never recompile template files
Check Cache
Do not open console
CCC (Combine, Compress and Cache):
Use CCC for CSS
Use CCC for JavaScript.
Keep HTML as original
Keep inline JavaScript in HTML as original
Check Apache optimization
Ciphering
Use Rijndael with mcrypt lib.
Caching
Check Use cache
Caching system : File System
Implementing browser static cached file for prestashop
Its a fancy name, but its really just some .htaccess rules with some expire and caching headers. Se bellow:
Apache
ForceType text/html
FileETag None
AddEncoding gzip .gz
AddType text/html .gz
SetEnvIfNoCase Request_URI .gz$ no-gzip
Header set Vary “Accept-Encoding, Cookie”
Header set Cache-Control ‘max-age=3600, must-revalidate’
ExpiresActive On
ExpiresByType text/html A3600
watch “mysql -e ‘show full processlist'”
Update your core_config_data table to edit the two records for web/unsecure/base_url and web/secure/base_url
Delete the contents of WEBROOT/var/cache
Update / edit any .htaccess domain redirects you may have added
Restart Apache
Make sure Apache has write permissions to WEBROOT/var
If you created a new DB, ensure that the WEBROOT/app/etc/local.xml is pointing to it.
If you’re using Chrome, clear your browser cache! (Chrome caches 301s)
ls -laR /var/run/screen/
kill -9 pid
cpufreqd is used to monitor the status of the system and adjust the frequency of the CPU according to the user configuration. The behaviour of the daemon is fully configurable. Logs are reported through syslogd.
yum install openipmi-tools
chkconfig ipmi on
service ipmi start
ipmitool sdr list generic
ipmitool chassis status
#!/bin/bash
SWAP=”${1:-512}”
NEW=”$[SWAP*1024]”; TEMP=”${NEW//?/ }”; OLD=”${TEMP:1}0″
umount /proc/meminfo 2> /dev/null
sed “/^Swap\(Total\|Free\):/s,$OLD,$NEW,” /proc/meminfo > /etc/fake_meminfo
mount –bind /etc/fake_meminfo /proc/meminfo
free -m
TERM=xterm esxtop