[OOT] Speedy

Quiet amaze with speedy, this afternoon my speedy connection was down. Then I log in to router console, disconnect my speedy and then reconnect.

My office using speedy (Office package 384 Kbps). I was shocked seeing download rate on web interface, it show 1029 Kbps. And then I tested the connection through www.speedtest.net and I was amaze to see this ;)

Recompile Kernel on CentOS 4.6

1. Download the latest kernel source from kernel.org

2. Copy kernel source to /usr/src/kernel/ and unpack it
[root@appdev kernels]tar jxvf linux-2.6.25.3.tar.bz2

3. Copy config files from original kernel
[root@appdev kernels]# cd linux-2.6.25.3
[root@appdev linux-2.6.25.3]# cp /boot/config-2.6.9-67.0.15.ELsmp .config
[root@appdev linux-2.6.25.3]# make menuconfig

and then exit

4. Rebuild RPM package
[root@appdev linux-2.6.25.3]# make rpm

5. You will find src rpm and rpm package on /usr/src/redhat/RPMS and /usr/src/redhat/ SRPMS

6. Install the new rpm package
[root@appdev]#rpm -ivh --nodeps /usr/src/redhat/RPMS/i386/kernel-2.6.25.3-1.i386.rpm

7. Make init files
[root@appdev]#mkinitrd /boot/initrd-kernel-2.6.25.3.img 2.6.25.3

8. Edit boot loader and add the new kernel
[root@appdev]#vi /boot/grub/grub.conf

9. Reboot the system
[root@appdev]#shutdown now -r

This article taken from
http://www.howtoforge.com/kernel_compilation_centos

Masquerade on sendmail and SMTP Route

add this line to /etc/mail/sendmail.mc for masquerading
# vi /etc/mail/sendmail.mc

MASQUERADE_AS(gudangsms.com)dnl
FEATURE(masquerade_envelope)dnl
FEATURE(masquerade_entire_domain)dnl
MASQUERADE_DOMAIN(gudangsms.com)dnl

add this line to /etc/mail/sendmail.mc for SMTP Route
define(`SMART_HOST',`smtp.gudangsms.com')

compile configuration files
# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

restart sendmail
# /etc/init.d/sendmail restart

Recreate TEMP tablespace

1. Create another temp tablespace

SQL> CREATE TEMPORARY TABLESPACE temp2
 2  TEMPFILE '/u02/oradata/TESTDB/temp2_01.dbf' SIZE 5M REUSE
 3  AUTOEXTEND ON NEXT 1M MAXSIZE unlimited
 4  EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1M;

2. Move default temporary tablespace on every user

SQL> ALTER DATABASE DEFAULT TEMPORARY TABLESPACE temp2;

3. Drop default tablespace

SQL> DROP TABLESPACE temp INCLUDING CONTENTS AND DATAFILES;

4. Create default temp tablespace

SQL> CREATE TEMPORARY TABLESPACE temp
 2  TEMPFILE '/u02/oradata/TESTDB/temp01.dbf' SIZE 500M REUSE
 3  AUTOEXTEND ON NEXT 100M MAXSIZE unlimited
 4  EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1M;

5. Re-move again default temp tablespace

SQL> ALTER DATABASE DEFAULT TEMPORARY TABLESPACE temp;

6. Drop second temp tablespace

SQL> DROP TABLESPACE temp2 INCLUDING CONTENTS AND DATAFILES;