2016 – KutuKupret colorful website

CentOS 6, httpd-2.2 and php-fpm

When your webserver is receiving a lot of traffic and began slow your website down, you might be consider to switch mod_php with php-fpm. First get mod_fastcgi from rpmforge Install php-fpm Configure php-fpm Rename mod.php to mod.php.bak that will disabled mod_php. Configure mod_fastcgi in /etc/httpd/conf.d/fastcgi.conf. add these lines at the…

admin June 29, 2016apache, centos, php, php-fpmNo Comments

centos mta postfix

CentOS 7, postfix SMTPUTF8 / Email Address Internationalization (EAI)

SMTPUTF8 is one of extended/enhanced SMTP feature. The protocol format was defined in RFC 6531.Latest postfix-3.1, support for SMTPUTF8 feature (since version 2.12) and this is how to install/compile it on CentOS 7. Install libicu-devel, if it's not install yet. Download postfix-3.1 rpm source Rebuild the source Upgrade existing postfix…

admin June 27, 2016centos, mta, postfix, smtp, smtputf8No Comments

centos linux yum

CentOS 7, additional third party external repositories

Add some useful external repositories to install useful third party software packages. install a plugin to add priorities to each installed repositories. set priority=1 to official repository Add EPEL Repository which is provided from Fedora project. set priority=5 change to enabled=0 and use it only when needed if enabled=0, input…

admin June 15, 2016centos, linux, yumNo Comments

centos iptables linux

CentOS 7, how to install xtables-addons

Here is how you can compile and install xtables-addons on CentOS 7.first, Install Dependencies: download xtables-addons extract, compile and install done! and now for example we want to use geoip module, first of all install geoip database for xtables-addons.still from xtables-addons-2.10 directory. if you want only allow ssh connection from…

admin June 8, 2016centos, iptables, linux, xtablesNo Comments

apache centos php

centos 7, apache event MPM with php-fpm

Starting from version 2.4 apache offers 3 MPM we can choose, it's depend in what you needs. prefork MPM uses multiple child processes without threading. Each process handles one connection at a time without creating separate threads for each. worker MPM uses several threads per child processes, where each thread…

admin June 4, 2016apache, centos, php, php-fpmNo Comments

dns rbl rbldnsd

unbound how to use rbldnsd as rhsbl

in order to make rbldnsd as rhsbl authoritative nameserver for unbound, the simple way is to create stub-zone like this: if we configured unbound as iterator and validator, this minimal configuration will not work. when you query for example: we will get "SERVFAIL" replied. the simple way is by turned…

admin May 25, 2016dns, rbl, rbldnsd, unboundNo Comments

centos systemd

centos 7, setting nofile and nproc on systemd

this is how to set maximum number of open file and maximum number of processess on systemd startup script. for example you want give nginx process nofile 20000 and nproc unlimited. edit nginx.service file add these into [Service] section reload the systemd script daemon finally, restart nginx service, and you're…

admin May 23, 2016centos, systemdNo Comments

inotify linux postfix

postfix, auto postmap using inotify

required: inotify-tools first create this bash script, let's name it as transport.sh make it executable run the script this script will stay on background proccess. try modify transport file save it, and test it enjoy

admin May 10, 2016inotify, inotifywait, linux, postfixNo Comments

arduino electronic microcontroller

Arduino nano, ENC28J60 Ethernet shield and 4 channel relay

i have already made this project previuosly using arduino uno, wiznet w5100 ethernet shield and 4 channel relay shield. But using Arduino nano + ENC29J60 lot cheaper. not mention it has smaller size. Once you get this badboy online on your network, you can control every device in your house using your smartphone or any gadget you have(that rely on your coding skill, ofcourse).

let’s the fun begin 🙂

wait, as usual i don’t do lots of talk so here’s the schematic and arduino code.

[Show as slideshow]

admin April 14, 2016arduino, electronic, enc28j60, microcontrollerNo Comments

courier dovecot mysql

Change Password Using courierpassd on dovecot mysql

When you have webmail separated from your pop3/imap4 server things can be complicated if you don’t have direct access to mysql server over the network. using poppassd will not solving the problem if you’re using mysql, pgsql or ldap backend for storing user information. because (AFAIK) it only can access/change user/password on passwd/shadow file.

using courierpassd allows us to access or modify pop3/imap4 user information store in mysql, pgsl or ldap backend. one caveat, courierpassd using courier-authlib API in order to be able accessing those database backend. we have to install or build from source. courierpassd use the same protocol as poppassd does.

i’m using centos and this is how i do it.

first using non priviledged user cccount, create rpm build environment.

$ mkdir -p ~/rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
$ echo '%_topdir %(echo $HOME)/rpmbuild' >> ~/.rpmmacros

mkdir $HOME/rpm
mkdir $HOME/rpm/SOURCES
mkdir $HOME/rpm/SPECS
mkdir $HOME/rpm/BUILD
mkdir $HOME/rpm/SRPMS
mkdir $HOME/rpm/RPMS
mkdir $HOME/rpm/RPMS/i386

echo '%_topdir $HOME/rpm' >> $HOME/.rpmmacros

download courier-authlib and courierpassd source

wget http://prdownloads.sourceforge.net/courier/courier-authlib-0.60.2.tar.bz2
wget http://www.arda.homeunix.net/?ddownload=375 -O courierpassd.1.1.2.tar.gz

compile and install courier-authlib

$rpmbuild -ta courier-authlib-0.60.2.tar.bz2
$sudo rpm -ivh /home/youruser/rpm/RPMS/x86_64/courier-authlib-0.66.4-1.el6.x86_64.rpm
$sudo rpm -ivh /home/youruser/rpm/RPMS/x86_64/courier-authlib-devel-0.66.4-1.el6.x86_64.rpm
$sudo rpm -ivh /home/youruser/rpm/RPMS/x86_64/courier-authlib-mysql-0.66.4-1.el6.x86_64.rpm

extract courierpassd, compile and install

#tar xzf courierpassd.1.1.2.tar.gz
#cd courierpassd-1.1.2
#./configure
#make
#make install

you want be able to access this courierpassd from other server on the network. people using xinet.d usually.

#vi /etc/xinetd.d/courierpassd
service courierpassd
{
       disable          = no
       socket_type      = stream
       protocol         = tcp
       port             = 106
       wait             = no
       user             = root
       server           = /usr/sbin/courierpassd
       instances        = 10
       only_from        = 192.168.0.101 127.0.0.1
}

admin March 22, 2016courier, dovecot, mysqlNo Comments