Cauwenbergh.be weblog

Archive for juli, 2007

Disable ping on linux

donderdag, juli 19th, 2007

Almost all people starting with linux want to know after a while how to stop ping to prevent floods, well here is the solutions:
echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all
Only one thing left to do, you also want to get this after a reboot, so put in /etc/sysctl.conf.:
net.ipv4.conf.icmp_echo_ignore_all = 1

Fedora Core 2 repository

zondag, juli 8th, 2007

Today i found that the mirrors in usa not working for some reason on a fedora core 2 system of a customer, so i searched and found a newone and placed in /etc/yum.conf:

[base]
name=Fedora Core $releasever – $basearch – Base
baseurl=ftp://alviss.et.tudelft.nl/pub/fedora/core/$releasever/$basearch/os
#baseurl=http://download.fedora.redhat.com/pub/fedora/linux/core/$releasever/$basearch/os/
[updates-released]
name=Fedora Core $releasever – $basearch – Released Updates
baseurl=ftp://alviss.et.tudelft.nl/pub/fedora/core/updates/$releasever/$basearch
#baseurl=http://download.fedora.redhat.com/pub/fedora/linux/core/updates/$releasever/$basearch/
Hopefull someone could use this!

Backup mysql with many tables >1000

zaterdag, juli 7th, 2007

When your mysql has many tables you could get an error of LOCK TABLES to solve this you can try two things:
1) use the option –skip-lock-tables in mysqldump
2) edit /etc/my.cfg and add following line under category [mysqld]: open_files_limit=16384
After 2 restart mysql!

Could not bind 0.0.0.0:443

donderdag, juli 5th, 2007

login su in server
#fuser 443/tcp
443/tcp: xxxx yyyy zzzz <- proceses using 443
#kill -9 xxxx yyyy xxxx
#service httpd start