September 4, 2014 by Rachmat Febrianto

This blog has been retired

Hi Thanks you, I started this blog when I was college student.
Now, time for retiring this blog…

October 22, 2013 by Rachmat Febrianto

Bash script to Backup Android SD Card

I just created simple bash script to backup my android sd card phone, you can freely used it with the adjustment according to your phone setting and files you want backup.

#!/bin/bash
# author : rachmat.febrianto@gmail.com
# script to backup content : images and e-book of sdcard 
# for android mobile phone

prog=phone_backup.sh
bkp_source1=DCIM
bkp_source2=e-book
bkp_target=/home/rachmat/backup/`date +%y-%m-%d`
sdcard_dir=/mnt/sdcard
sdcard_dev=/dev/sdd1

function check_dir_dev(){
	echo "Checking existance of $sdcard_dir directory ..."
	if [ -d $sdcard_dir ]; then
		echo "The $sdcard_dir directory exist"
		echo ""
	else
		echo "The $sdcard_dir directory doesn't exist"
		echo "Creating $sdcard_dir directory ..."
		echo ""
		mkdir $sdcard_dir
	fi

	echo "Checking existance of $sdcard_dev block special device ..."
	if [ -e $sdcard ]; then
 		echo "the $sdcard_dev block special device exist"
		echo ""
		mounting
		backup
	else
		echo "the $sdcard_dev block special device doesn't exist"
		echo "please consult to your administrator."	
		echo ""
	exit 1;
	fi
}

function mounting(){
	mount $sdcard_dev $sdcard_dir
	if [ $? == 0 ]; then
		echo "$sdcard_dev mounted on $sdcard_dir"
	else
		echo "Error with error code $?"
	fi
}

function backup(){
	echo "Backup start, please wait for a while ..."
	mkdir $bkp_target
	cp -r $sdcard_dir/$bkp_source1 $bkp_target
	cp -r $sdcard_dir/$bkp_source2 $bkp_target
	chown -R rachmat:rachmat $bkp_target
	umount $sdcard_dir
	echo "Backup finish, please check $bkp_target directory"
}

case "$1" in 
	backup)
		check_dir_dev;;
	*)	echo "usage: $prog {backup}"
esac

October 21, 2013 by Rachmat Febrianto

Installing Cacti On Oracle Linux

Just test and installing Cacti on Oracle Linux 6.4
Before you go ahead installing cacti on your linux distrubition, there are some requirement to fullfill.

Cacti required :
1. AMP : Apache, Mysql, PHP
2. Some packages : RRDTool, net-snmp

Assumming your AMP is running, and we can go ahead to next steps.

1. Downloding latest cacti
http://www.cacti.net/download_cacti.php

2. Extract it into your http web folder, in linux tipically : /var/www/html

3. prepare database to be used by cacti:
– login mysql and create database and cacti user and grant it with following sql command:

CREATE USER 'cacti'@'localhost' IDENTIFIED BY '***';GRANT USAGE ON *.* TO 'cacti'@'localhost' IDENTIFIED BY '***' WITH MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0;CREATE DATABASE IF NOT EXISTS `cacti`;

GRANT ALL PRIVILEGES ON `cacti`.* TO 'cacti'@'localhost';

4. Import default cacti database with cacti.sql
you can get file “cacti.sql” inside your cacti folder that you just extracted.

[root@localhost cacti]# pwd
/var/www/html/cacti
[root@localhost cacti]# ls -l cacti.sql
-rw-r--r-- 1 1000 users 178349 Aug  7 09:31 cacti.sql
[root@localhost cacti]#
[root@localhost cacti]# mysql -u root -p cacti < cacti.sql

5. Open your browser to install cacti. http://localhost/cacti
and follow the instruction.

viola.. installation is done. now you can login with default usernam and password :
username : admin
password : admin

October 19, 2013 by Rachmat Febrianto

Enable anonymous ftp on Solaris 10

Here the simple step to enable anonymous ftp on Solaris 10:

# ftpconfig -d /export/home/ftp_anonymous
Creating directory /export/home/ftp_anonymous
Updating directory /export/home/ftp_anonymous

# ls /export/home/ftp_anonymous
bin  dev  etc  lib  pub  usr

# ftpconfig /export/home/ftp_anonymous
Creating user ftp
Updating directory /export/home/ftp_anonymous

# svcadm enable svc:/network/ftp:default

# svcs -a | grep ftp
online         18:30:19 svc:/network/ftp:default

Testing from client side:

$ ftp 192.168.56.10
Connected to 192.168.56.10 (192.168.56.10).
220 solaris FTP server ready.
Name (192.168.56.10:rachmat): anonymous
331 Guest login ok, send your complete e-mail address as password.
Password:
230 Guest login ok, access restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> dir
227 Entering Passive Mode (192,168,56,10,251,189)
150 Opening ASCII mode data connection for /bin/ls.
total 16
lrwxrwxrwx   1 root     bin            9 Oct 19 18:29 bin -> ./usr/bin
d--x--x--x   2 root     sys            7 Oct 19 18:29 dev
d--x--x--x   5 root     sys            8 Oct 19 18:29 etc
d--x--x--x   2 root     bin           23 Oct 19 18:29 lib
drwxr-xr-x   2 root     sys            2 Oct 19 18:24 pub
d--x--x--x   6 root     sys            6 Oct 19 18:24 usr
226 Transfer complete.
ftp> bye
221-You have transferred 0 bytes in 0 files.
221-Total traffic for this session was 780 bytes in 1 transfers.
221-Thank you for using the FTP service on solaris.
221 Goodbye.

May 1, 2013 by Rachmat Febrianto

Extend root filesystems on Oracle Linux

Before you begin :
1. Verify your new disk is detect on the systems
in this case, I’m using /dev/sdb
2. Identify your volgroup
in this case, my my root vg is vg_allen.

Here we go :

[root@allen ~]# fdisk /dev/sdb 
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x079df05d.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
         switch off the mode (command 'c') and change display units to
         sectors (command 'u').

Command (m for help): 
Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-1566, default 1): 
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-1566, default 1566): 
Using default value 1566

Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
[root@allen ~]# fdisk -l

Disk /dev/sda: 12.9 GB, 12884901888 bytes
255 heads, 63 sectors/track, 1566 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0009af64

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64        1567    12069888   8e  Linux LVM

Disk /dev/sdb: 12.9 GB, 12884901888 bytes
255 heads, 63 sectors/track, 1566 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x079df05d

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1        1566    12578863+  8e  Linux LVM

Disk /dev/mapper/vg_allen-lv_root: 10.2 GB, 10242490368 bytes
255 heads, 63 sectors/track, 1245 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_allen-lv_swap: 2113 MB, 2113929216 bytes
255 heads, 63 sectors/track, 257 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

[root@allen ~]# partprobe 
Warning: WARNING: the kernel failed to re-read the partition table on /dev/sda (Device or resource busy).  As a result, it may not reflect all of your changes until after reboot.
[root@allen ~]# pvcreate /dev/sdb
sdb   sdb1  
[root@allen ~]# pvcreate /dev/sdb1 
  Writing physical volume data to disk "/dev/sdb1"
  Physical volume "/dev/sdb1" successfully created
[root@allen ~]# vgextend vg_allen /dev/sdb1 
  Volume group "vg_allen" successfully extended
[root@allen ~]# lvextend /dev/vg_allen/lv_
lv_root  lv_swap  
[root@allen ~]# lvextend /dev/vg_allen/lv_root /dev/sdb1 
  Extending logical volume lv_root to 21.53 GiB
  Logical volume lv_root successfully resized
[root@allen ~]# df -h /
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_allen-lv_root
                      9.4G  8.5G  504M  95% /
[root@allen ~]# resize2fs /dev/vg_allen/lv_root 
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_allen/lv_root is mounted on /; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 2
Performing an on-line resize of /dev/vg_allen/lv_root to 5644288 (4k) blocks.
The filesystem on /dev/vg_allen/lv_root is now 5644288 blocks long.

[root@allen ~]# df -h /
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_allen-lv_root
                       22G  8.5G   12G  42% /

December 31, 2012 by Rachmat Febrianto

2012 in review

The WordPress.com stats helper monkeys prepared a 2012 annual report for this blog.

Here’s an excerpt:

4,329 films were submitted to the 2012 Cannes Film Festival. This blog had 34,000 views in 2012. If each view were a film, this blog would power 8 Film Festivals

Click here to see the complete report.

January 8, 2012 by Rachmat Febrianto

Failed to uninstall the Extension Pack Oracle VM VirtualBox Extension Pack.

Borobudur Temple, West Java - Indonesia : http://en.wikipedia.org/wiki/Borobudur

After uninstalling my VirtualBox, later after that I Re-Install it again. When I wanto uninstall the Extension Pack I got following error :

Failed to uninstall the Extension Pack Oracle VM VirtualBox Extension Pack.

The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS

rcExit=1.

Result Code: E_FAIL (0x80004005)
Component: ExtPackManager
Interface: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

After googlig, I got solution to fix it.. you just have to clean the extension pack with the command line:

C:\Program Files\Oracle\VirtualBox>vboxmanage extpack cleanup
Successfully performed extension pack cleanup

C:\Program Files\Oracle\VirtualBox>

Try to re-install extension pack, and it installed successfully.

refer to vbox forum : https://forums.virtualbox.org/viewtopic.php?f=2&t=41077

December 29, 2011 by Rachmat Febrianto

On Demand Webcast : SPARC SuperCluster

Gaye Hudson and Steve Walker talk to John Abel, Chief Technology Architect, Oracle Server and Storage, EMEA, about SPARC SuperCluster and T4; and to Luc Gheysens, Senior Director, Storage Sales Specialist, EMEA, about ZFS Storage and Pillar Axiom 600

December 29, 2011 by Rachmat Febrianto

Setting Static IP Address on Solaris 11

Solaris 11 coming with new feature and enhancement, one of it is NWAM (Network automagic) with NWAM you can create and save the network profile. In this post, I’ll blogging about how to configure your Solaris 11 Systems to used static IP Address.

Ok let’s start :
1. Switch From Automatic Network Configuration Mode to Manual Network Configuration Mode

# netadm enable -p ncp DefaultFixed

2. Verify that DefaultFixed profile is applied

# netadm list
netadm: DefaultFixed NCP is enabled;
automatic network management is not available.
'netadm list' is only supported when automatic network management is active.

3. Determine the interface that you want to configure

# dladm show-phys

4. I’ll configure the net0 interface

# ipadm create-ip net0
# ipadm create-addr -T static -a 192.168.56.200/24 net0/v4

5. Verify

# ipadm show-addr
ADDROBJ           TYPE     STATE        ADDR
lo0/v4            static   ok           127.0.0.1/8
net0/v4           static   ok           192.168.56.200/24
lo0/v6            static   ok           ::1/128

root@solaris:~# dladm show-link
LINK                CLASS     MTU    STATE    OVER
net0                phys      1500   up       --
net1                phys      1500   unknown  --

6. Add default route

# route -p add default 12.34.56.1

7. Add DNS Name Server

root@solaris:~# svccfg -s dns/client
svc:/network/dns/client> setprop config/nameserver = (8.8.8.8 8.8.4.4)
svc:/network/dns/client> listprop config
config                      application
config/value_authorization astring     solaris.smf.value.name-service.dns.client
config/nameserver          net_address 8.8.8.8 8.8.4.4
svc:/network/dns/client> exit
root@solaris:~#
root@solaris:~# svcadm refresh dns/client
root@solaris:~# svcadm restart dns/client

8. Set name service switch

root@solaris:~# svccfg -s name-service/switch
svc:/system/name-service/switch> setprop config/host = "files dns"
svc:/system/name-service/switch> listprop config
config                      application
config/default             astring     files
config/value_authorization astring     solaris.smf.value.name-service.switch
config/printer             astring     "user files"
config/host                astring     "files dns"
svc:/system/name-service/switch> exit

9. Testing

root@solaris:~# ping google.com
google.com is alive

That’s it..
In the next post I’ll blogging about how to configure IPMP on Solaris 11.

Rachmat Febrianto

Unix / Solaris, Programming and High Availability

Author: Rachmat Febrianto