Niki Nuryadin

ssh without password

Niki Nuryadin — Tue, 20 Sep 2011 04:17:56 +0000

ServerA dan ServerB keduanya menjalankan ssh daemon.

1. Mengijinkan ServerA meremote SSH ke ServerB tanpa password:
# ssh-keygen -t rsa
Perintah diatas akan menghasilkan dua file id_rsa.pub dan id_rsa

2. Salin/copy file id_rsa.pub ke ServerB :
#scp ~/.ssh/id_rsa.pub server.ip.address:.ssh/authorized_keys
Pastikan folder .ssh/authorized_keys ada
Masukkan password jika diminta.

4. Coba ssh ke ServerB dari ServerA tanpa password:
# ssh serverB uname -a
Perintah diatas akan menjalakan “uname -a” di ServerB dan hasilnya ditampilkan ke ServerA.

Prosedur yang sama bisa di terapkan juga di ServerB, dimana ServerB me-SSH ServerA tanpa password.

Bila serverB menolak koneksi, remove terlebih dahulu keygen yg ada:

#ssh-keygen -R {ssh.server.ip.address}

Atau

#ssh-keygen -f “/root/.ssh/known_hosts” -R serverB.ip.address

Can’t connect to local MySQL server through socket ‘/var/run/mysqld/mysqld.sock’ (2)

Niki Nuryadin — Sat, 17 Sep 2011 16:51:10 +0000

1. Create the directory (if it doesn’t already exist).
#sudo mkdir /var/run/mysqld/

2. Create the file by “touching”
#sudo touch /var/run/mysqld/mysqld.sock

3. Set the ownership of the mysqld.sock file and folder to mysql.
#sudo chown -R mysql /var/run/mysqld/

4. Start mysql:
/etc/init.d/mysql restart

If this solution isn’t work then you have to look at my.cnf file which it can make you confused. Replacing my.cnf with original one is better.

MySQL Tip

Niki Nuryadin — Fri, 26 Aug 2011 01:25:47 +0000

Auto repair, check and optimize all the tables in all databases running on a MySQL server:

mysqlcheck -u root -p –auto-repair –check –optimize –all-databases

Synchronizing MySQL Database

Syncronize local database with remote one:
ssh user@www.my_domain.com “mysqldump -u my_remote_db_username –password=my_remote_db_password my_remote_db_name”
| mysql -u my_local_db_username –password=my_local_db_password –host=localhost -C my_local_db_name

Syncronize remote database with local one:
mysqldump -u my_local_db_username –password=my_local_db_password –host=localhost -C my_local_db_name | ssh user@www.my_domain.com “mysql -u my_remote_db_username –password=my_remote_db_password my_remote_db_name”

Konfirm ok/cancel link PHP dengan javascript

Niki Nuryadin — Fri, 10 Jun 2011 10:35:14 +0000

Solution ./start_navicat returns bash error in Linux

Niki Nuryadin — Thu, 09 Jun 2011 02:50:43 +0000

Running start_navicat script returns bash error:
./start_navicat: 10: arithmetic expression: expecting EOF: “2*100+13 2″

Solution:
Replace the 10th line of the start_navicat script with MINOR=`echo $VERSION_STR | cut -d. -f2 | cut -d” ” -f1`

Tip: locales (perl) warning messages

Niki Nuryadin — Thu, 14 Apr 2011 02:31:49 +0000

Error message:

can’t set the locale; make sure $LC_* and $LANG are correct

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = “en_US.UTF-8″
are supported and installed on your system.
perl: warning: Falling back to the standard locale (“C”).
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory

Solution 1:

#apt-get update

#apt-get install belocs-locales-bin belocs-locales-data

Edit file locale.gen:

# nano /etc/locale.gen

Selected (un-commented) at least one of the locales

……..
……..
# en_US ISO-8859-1
# en_US.ISO-8859-15 ISO-8859-15
en_US.UTF-8 UTF-8
# en_ZA ISO-8859-1
# en_ZA.UTF-8 UTF-8
……….
……….

Save dan quit.

# locale-gen

Generating locales…
en_US.UTF-8… done
Generation complete

Solution 2:

#apt-get update
#apt-get install locales
#dpkg-reconfigure locales

Configure locales: Select en_US.UTF-8.

locales en_US.UTF-8

Generating locales (this might take a while)…
en_US.UTF-8… done
Generation complete.

Error 403 Forbidden at Apache web server

Niki Nuryadin — Thu, 20 Jan 2011 02:03:20 +0000

Forbidden

You don’t have permission to access / on this server.

Solution:

Step 1. Find where web server locate document root files in httpd.conf file. ( /etc/apache2/httpd.conf in Debian Linux)

Step 2. Make new file index.html. Write this code:

It works!

then save in document root folder. (/var/www is default document root in Debian Linux)

The end.

Uninstall xampp at Debian Linux

Niki Nuryadin — Wed, 19 Jan 2011 06:42:51 +0000

Step 1. Stopping XAMPP

To stop XAMPP call this command:
#/opt/lampp/lampp stop

You should now see:

Stopping LAMPP 1.7.3a…
LAMPP: Stopping Apache…
LAMPP: Stopping MySQL…
LAMPP stopped.

And XAMPP for Linux is stopped.

Step2. To uninstall XAMPP just type in this command:
rm -rf /opt/lampp

The end.

Kumpulan Javascript PHP

Niki Nuryadin — Thu, 16 Dec 2010 08:14:41 +0000

Entered value from child window to parent window

Kode di ‘Parent window’:

Kode di ‘child window’:

if ($_POST[submit]){ echo “”;}
?>

Refreshing parent window from child window :
Kode di ‘child window’:
echo “”;

Error “There are no public key available for the following key IDs” on Debian and Ubuntu

Niki Nuryadin — Thu, 11 Nov 2010 03:39:57 +0000

Error :

# apt-get update
……
Fetched 5562B in 13s (421B/s)
Reading package lists… Done
W: There are no public key available for the following key IDs:
A70DAF536070D3A1
W: You may want to run apt-get update to correct these problems
#

Solution on Debian:

# apt-key update

# gpg – -keyserver subkeys.pgp.net - -recv-keys XXXXXXXX

XXXXXXXX = Last 8 digit Error of Key number

#gpg – -armor – -export XXXXXXXX | apt-key add -

On Ubuntu:

#apt-key adv –recv-key –keyserver keyserver.ubuntu.com Error of Key number