Techonia.com » Centos http://www.techonia.com News, Tutorials, and How-tos about Technology Fri, 30 Jul 2010 11:19:59 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 How to add MP3 support to Rhythmbox http://www.techonia.com/add-mp3-support-rhythmbox http://www.techonia.com/add-mp3-support-rhythmbox#comments Mon, 21 Dec 2009 11:25:17 +0000 Fuad NAHDI http://www.techonia.com/?p=787

If you want to play musics (MP3 files) in UNIX/Linux platform, you can choose to use XMMS, Songbird, Amarok ,Rhythmbox and others. Since I use Gnome window manager on my Centos 5.4, I use Rhythmbox to play MP3 music files. However when I first run the Rhythmbox program, I got error messages telling me that ‘The Gstreamer plugins to decode MP3 files cound not be found”, so I need to install the plugins.

The plugins you need are gstreamer-plugins-ugly and gstreamer-plugins-bad. Both are already in RPMforge repository.

Make sure that you already have rpmforge repository. See http://wiki.centos.org/Repositories to know how to install the RPMForge repository.

Run yum to install the plugins:

$ sudo yum install gstreamer-plugins-ugly gstreamer-plugins-bad

After installation succeeded then re-run the Rhythmbox and you should be able to playing MP3 files now.

Incoming search terms for this post:

]]> http://www.techonia.com/add-mp3-support-rhythmbox/feed 0 How to install Oracle x64 11gR2 on Centos 5.4 x86_64 http://www.techonia.com/install-oracle-centos http://www.techonia.com/install-oracle-centos#comments Thu, 10 Dec 2009 21:33:42 +0000 Fuad NAHDI http://www.techonia.com/?p=745

I followed the tutorial written by James F. Koopmann located at http://www.jameskoopmann.com/docs/Install_Oracle11gCentOS5.htm. It is basically the best oracle installation tutorial I found on the internet.
The tutorial just install the software only. For the database creation, we can install later using Database Configuration Assistant (DBCA).
For the x64 platform you need to modify some settings in the /etc/sysctl.conf file and also the memory swap space.
I have 2GB RAM and set the swap memory to 2GB also, but in the installation stage the expected swap space is 3GB.
Here are the parameter of /etc/sysctl.conf file you need to consider:

kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.file-max = 6815744
fs.aio-max-nr = 1048576

Below are the screenshots of the installation process:

ora-install-1

ora-grid-option

ora-install-db-edition

ora-install-location

ora-install-inventory

ora-os-group

ora-install-summary

ora-install-product

ora-install-finish

Incoming search terms for this post:

]]> http://www.techonia.com/install-oracle-centos/feed 0 How to install Huawei E220 USB Modem on Centos 5.4 http://www.techonia.com/install-huawei-usb-modem-centos http://www.techonia.com/install-huawei-usb-modem-centos#comments Tue, 03 Nov 2009 11:18:46 +0000 Fuad NAHDI http://www.katalis.web.id/?p=530

You want to install Huawei E220 USB Modem on Centos 5.4 and use the modem to access internet? If you use Slackware 12.2 or Fedora 12, click here for Slackware 12.2 or here for Fedora 12 to follow the tutorials.

It is very easy to do this. CentOS 5.4 that using kernel 2.6.18-164 is smart enough to autodetect the device so you do not need huaweiAktBbo-i386.out tool to switch the modem to the correct mode for serial port. In my case, it is detected and attached to ttyUSB0 and ttyUSB1. When you connect the modem to your laptop or PC via USB port, you would see log messages in ‘dmesg’ command something like below:

usb 2-2: new full speed USB device using uhci_hcd and address 2
usb 2-2: configuration #1 chosen from 1 choice
Initializing USB Mass Storage driver...
scsi3 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usb 2-2: USB disconnect, address 2
usb 2-2: new full speed USB device using uhci_hcd and address 3
usb 2-2: configuration #1 chosen from 1 choice
usb-storage: probe of 2-2:1.0 failed with error -5
usb-storage: probe of 2-2:1.1 failed with error -5
scsi6 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
usbcore: registered new driver usbserial
drivers/usb/serial/usb-serial.c: USB Serial support registered for generic
usbcore: registered new driver usbserial_generic
drivers/usb/serial/usb-serial.c: USB Serial Driver core
drivers/usb/serial/usb-serial.c: USB Serial support registered for GSM modem (1-port)
option 2-2:1.0: GSM modem (1-port) converter detected
usb 2-2: GSM modem (1-port) converter now attached to ttyUSB0
option 2-2:1.1: GSM modem (1-port) converter detected
usb 2-2: GSM modem (1-port) converter now attached to ttyUSB1
usbcore: registered new driver option
drivers/usb/serial/option.c: USB Driver for GSM modems: v0.7.1
  Vendor: HUAWEI    Model: Mass Storage      Rev: 2.31
  Type:   CD-ROM                             ANSI SCSI revision: 02
scsi 6:0:0:0: Attached scsi generic sg1 type 5
usb-storage: device scan complete

As you can see above, Centos 5.4 already attached the modem to ttyUSB0 and ttyUSB1.

Now build a configuration file for wvdial and stored it in /etc/wvdial.conf file by running wvdialconf command as below:

[root@fuad ~]# wvdialconf /etc/wvdial.conf
Scanning your serial ports for a modem.
 
Port Scan<*1>: S0   S1   S2   S3
WvModem<*1>: Cannot get information for serial port.
ttyUSB0<*1>: ATQ0 V1 E1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 Z -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyUSB0<*1>: Modem Identifier: ATI -- Manufacturer: huawei
ttyUSB0<*1>: Speed 4800: AT -- OK
ttyUSB0<*1>: Speed 9600: AT -- OK
ttyUSB0<*1>: Speed 19200: AT -- OK
ttyUSB0<*1>: Speed 38400: AT -- OK
ttyUSB0<*1>: Speed 57600: AT -- OK
ttyUSB0<*1>: Speed 115200: AT -- OK
ttyUSB0<*1>: Speed 230400: AT -- OK
ttyUSB0<*1>: Speed 460800: AT -- OK
ttyUSB0<*1>: Max speed is 460800; that should be safe.
ttyUSB0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
WvModem<*1>: Cannot get information for serial port.
ttyUSB1<*1>: ATQ0 V1 E1 -- OK
ttyUSB1<*1>: ATQ0 V1 E1 Z -- OK
ttyUSB1<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyUSB1<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyUSB1<*1>: Modem Identifier: ATI -- Manufacturer: huawei
ttyUSB1<*1>: Speed 4800: AT -- OK
ttyUSB1<*1>: Speed 9600: AT -- OK
ttyUSB1<*1>: Speed 19200: AT -- OK
ttyUSB1<*1>: Speed 38400: AT -- OK
ttyUSB1<*1>: Speed 57600: AT -- OK
ttyUSB1<*1>: Speed 115200: AT -- OK
ttyUSB1<*1>: Speed 230400: AT -- OK
ttyUSB1<*1>: Speed 460800: AT -- OK
ttyUSB1<*1>: Max speed is 460800; that should be safe.
ttyUSB1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
 
Found a modem on /dev/ttyUSB0.
Modem configuration written to /etc/wvdial.conf.
ttyUSB0: Speed 460800; init \"ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0\"
ttyUSB1: Speed 460800; init \"ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0\"

The command above will generate wvdial.conf after scanning the modem. You can check that file and should be like this:

[root@fuad ~]# cat /etc/wvdial.conf
[Dialer Defaults]
Modem = /dev/ttyUSB0
Baud = 460800
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ISDN = 0
Modem Type = Analog Modem
; Phone = 
; Username = 
; Password =

You have to edit the Phone, Username and Password of the configuration above to meet your account.

For example, it should be like below:

[Dialer Defaults]
Modem = /dev/ttyUSB0
Baud = 460800
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ISDN = 0
Modem Type = Analog Modem
Phone = *99#
Username = fuadnahdi
Password = secret-eh

The next step is running ‘wvdial’ command as root. By default it will read /etc/wvdial.conf as we configured before.

[root@fuad ~]# wvdial
--> WvDial: Internet dialer version 1.54.0
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
ATDT*99#
CONNECT
--> Carrier detected.  Waiting for prompt.
--> Don\'t know what to do!  Starting pppd and hoping for the best.
--> Starting pppd at Mon Nov  1 19:51:01 2009
--> pid of pppd: 4206
--> Using interface ppp0
--> local  IP address 114.59.189.52
--> remote IP address 10.64.64.64
--> primary   DNS address 202.155.0.10
--> secondary DNS address 202.155.0.15

If successful you will get an IP address and DNS server assigned to you. For the DNS server, you need to manually write it into /etc/resolv.conf because the wvdial script will not automatically write it for you.

Incoming search terms for this post:

]]> http://www.techonia.com/install-huawei-usb-modem-centos/feed 4 How to upgrade Clam Anti-virus (Clamav) on Centos http://www.techonia.com/upgrade-clamav-centos http://www.techonia.com/upgrade-clamav-centos#comments Sun, 23 Aug 2009 01:23:58 +0000 Fuad NAHDI http://www.katalis.web.id/?p=389

My email server is using Postfix as the MTA and Clamav as the anti-virus software running on Centos 5.4. Today I check the version of Clamav installed on it and it is already out-dated so I need to upgrade to the latest stable version. The installed version of clamav is ClamAV 0.94 whereas the latest stable version is ClamAV 0.95.2.

Upgrading clamav installed on Centos is easy. You just first backup the current configuration of clamav (/etc/clamd.conf and /etc/freshclam.conf).
Basically if you install clamav for the first time, you need to edit and modify the config file of clamav (clamd.conf and freshclam.conf) to meet your need. You do not wanna lose these files because it takes time to edit them.

Here are the upgrade processes:

[root@mx-1 ~]# yum upgrade clamav
Loading "installonlyn" plugin
Setting up Upgrade Process
Setting up repositories
rpmforge                  100% |=========================| 1.1 kB    00:00
base                      100% |=========================| 1.1 kB    00:00
updates                   100% |=========================|  951 B    00:00
addons                    100% |=========================|  951 B    00:00
extras                    100% |=========================| 1.1 kB    00:00
Reading repository metadata in from local files
primary.xml.gz            100% |=========================| 3.5 MB    00:39
################################################## 9558/9558
primary.xml.gz            100% |=========================| 878 kB    00:02
################################################## 2508/2508
primary.xml.gz            100% |=========================| 306 kB    00:01
################################################## 465/465
primary.xml.gz            100% |=========================| 100 kB    00:01
################################################## 312/312
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for clamav to pack into transaction set.
clamav-0.95.2-4.el5.rf.i3 100% |=========================|  25 kB    00:00
---> Package clamav.i386 0:0.95.2-4.el5.rf set to be updated
--> Running transaction check
--> Processing Dependency: libclamav.so.5 for package: clamd
--> Processing Dependency: libclamav.so.5(CLAMAV_PRIVATE) for package: clamd
--> Processing Dependency: clamav = 0.94-1.el5.rf for package: clamd
--> Processing Dependency: libclamav.so.5(CLAMAV_PUBLIC) for package: clamd
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for clamd to pack into transaction set.
clamd-0.95.2-4.el5.rf.i38 100% |=========================| 6.7 kB    00:00
---> Package clamd.i386 0:0.95.2-4.el5.rf set to be updated
--> Running transaction check
 
Dependencies Resolved
 
=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Updating:
 clamav                  i386       0.95.2-4.el5.rf  rpmforge          2.7 M
Updating for dependencies:
 clamd                   i386       0.95.2-4.el5.rf  rpmforge          213 k
 
Transaction Summary
=============================================================================
Install      0 Package(s)
Update       2 Package(s)
Remove       0 Package(s)
 
Total download size: 2.9 M
Is this ok [y/N]:
Downloading Packages:
(1/2): clamd-0.95.2-4.el5 100% |=========================| 213 kB    00:03
(2/2): clamav-0.95.2-4.el 100% |=========================| 2.7 MB    00:15
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Updating  : clamav                       [1/4]warning: /etc/freshclam.conf created as /etc/freshclam.conf.rpmnew
  Updating  : clamav                       ######################### [1/4]
  Updating  : clamd                        ######################### [2/4]
  Cleanup   : clamd                        ######################### [3/4]
  Cleanup   : clamav                       ######################### [4/4]
 
Updated: clamav.i386 0:0.95.2-4.el5.rf
Dependency Updated: clamd.i386 0:0.95.2-4.el5.rf
Complete!

Now restore the backup files to /etc folder and then restart the clamav service.

[root@mx-1 ~]# /etc/init.d/clamd restart

Check the clamav version:

[root@mx-1 ~]# clamd -V
ClamAV 0.95.2/9727/Sat Aug 22 21:04:10 2009

Do not forget to update clam antivirus database using freshclam.
Since I live in Indonesia, I use db.id.clamav.net as DatabaseMirror in the freshclam.conf file but got errors when running the freshclam update like below:

Can not connect to port 80 of host db.id.clamav.net (IP: 222.124.18.201)
ERROR: getpatch: Can not download daily-9725.cdiff from db.local.clamav.net
WARNING: Incremental update failed, trying to download daily.cvd
Trying host db.id.clamav.net (222.124.18.201)...
nonblock_connect: connect timing out (30 secs)
Can not connect to port 80 of host db.id.clamav.net (IP: 222.124.18.201)
ERROR: Can not download daily.cvd from db.id.clamav.net
Giving up on db.id.clamav.net...
Update failed. Your network may be down or none of the mirrors listed in /etc/freshclam.conf is working. Check http://www.clamav.net/support/mirror-problem for possible reasons.

We have to try another mirror sites. Run ‘freshclam –list-mirrors’ to see available mirror sites.

[root@mx-1 ~]# freshclam --list-mirrors
Mirror #1
IP: 222.124.18.201
Successes: 1113
Failures: 0
Last access: Wed Aug 19 04:04:58 2009
Ignore: No
-------------------------------------
Mirror #2
IP: 193.1.193.64
Successes: 1116
Failures: 2
Last access: Wed Aug 19 04:04:58 2009
Ignore: No
-------------------------------------
Mirror #3
IP: 192.121.13.5
Successes: 12
Failures: 0
Last access: Sat Aug 22 04:12:07 2009
Ignore: No

There are three available mirrors. The first one was failed (db.id.clamav.net), the second one is located at Ireland and the third one is located at Sweden.
I choose the third one, the Sweden. The domain country code of Sweden is ‘se’ so the db clamav domain must be ‘db.se.clamav.net’. Set the DatabaseMirror in freshclam.conf to be db.se.clamav.net and then run freshclam update again.

[root@mx-1 ~]# /usr/bin/freshclam --datadir="/var/clamav" --log="/var/log/clamav/freshclam.log" --daemon-notify="/etc/clamd.conf"
ClamAV update process started at Sun Aug 23 07:01:18 2009
main.cld is up to date (version: 51, sigs: 545035, f-level: 42, builder: sven)
Trying host db.se.clamav.net (194.47.250.218)...
Downloading daily-9725.cdiff [100%]
Downloading daily-9726.cdiff [100%]
Downloading daily-9727.cdiff [100%]
daily.cld updated (version: 9727, sigs: 66742, f-level: 43, builder: mcichosz)
Database updated (611777 signatures) from db.se.clamav.net (IP: 194.47.250.218)
Clamd successfully notified about the update.

Now your clamav has been upgraded and the clam antivirus database also has been updated successfully. Restart the clamd service again.

[root@mx-1 ~]# /etc/init.d/clamd restart

Incoming search terms for this post:

]]> http://www.techonia.com/upgrade-clamav-centos/feed 0