Multipath with storage

1.install multipath tools
#apt-get install multipath-tools  multipath-tools-boot

2. create multipath.conf
#cp /usr/share/doc/multipath-tools/examples/multipath.conf.synthetic /etc/multipath.conf

3.modify mutipath.conf
#vim /etc/multipath.conf

defaults {
        path_grouping_policy    multibus
        failback                immediate
        no_path_retry           fail
        user_friendly_names     yes
}
blacklist {
        devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
        devnode "^hd[a-z][[0-9]*]"
        devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]"

      }

blacklist define device not included by multipath

4.restart multipath service

#service multipath-tools restart

5.show multipath status

#multipath -ll

mpath0 (360050cc000203d7a0000000000000008) dm-0 OVERLAND,RAID 1200

[size=1.5T][features=0][hwhandler=0]

\_ round-robin 0 [prio=2][active]

 \_ 2:0:0:0 sda 8:0   [active][ready]

 \_ 2:0:1:0 sdb 8:16  [active][ready]

6. if your disk is GPT format then install fixparts and install deb 

#wget http://download.opensuse.org/repositories/home:/srs5694/xUbuntu_10.04/amd64/gptfdisk_0.8.8-1_amd64.de

#dpkg -i gptfdisk_0.8.8-1_amd64.deb

#apt-get -f install

7. format gpt disk 

# fixparts /dev/mapper/mpath0

ubuntu 12.04 install php + mysql + apache2 + oracle + mssql develop environment

1. install all packages for os
# apt-get update
# apt-get upgrade

2. install compiler packages
# apt-get install buiild-essential fakeroot dpkg-dev

3. install apache, mysql server, php
# aptg-get install mysql-server mysql-client php5 php5-cli libapache2-mod-auth-mysql apache2

4. check php function
# vim /var/www/1.php
echo phpinfo();
?>

5. install mssql odbc module
# apt-get install php5-sybase

6. install oracle module
# apt-get install libaio1 php-pear unzip

7. download instantclient for oracle
# cd /usr/local/lib
# wget http://download.oracle.com/otn/linux/instantclient/121010/instantclient-basic-linux.x64-12.1.0.1.0.zip
# wget http://download.oracle.com/otn/llinux/instantclient/instantclient-sdk-linux.x64-12.1.0.1.0.zip
# unzip instantclient-basic-linux.x64-12.1.0.1.0.zip
# unzip instantclient-sdk-linux.x64-12.1.0.1.0.zip
# cd instantclient_12_1
# ln -s libclntsh.so.12.1 libclntsh.so

8. add some line to /etc/environment
# vim /etc/environment

# Oracle Instant Client
LD_LIBRARY_PATH="/usr/local/lib/instantclient_12_1"
TNS_ADMIN="/usr/local/lib/instantclient_12_1"
ORACLE_BASE="/usr/local/lib/instantclient_12_1"
ORACLE_HOME=$ORACLE_BASE

9. install oci8 package for pear

# pecl install oci8

when you get the prompt for oracle_home, key in the path 

'instantclient,/usr/local/lib/instantclient_12_1'

10. add extension to php.ini

# vim /etc/php5/apache2/php.ini

extension=oci8.so

11. change apache default charset to utf-8
#vim /etc/apache2/conf.d/charset
uncomment AddDefaultCharset UTF-8

12. restart apache

#/etc/init.d/apache2 restart

manual install mysql server

1. update and install some package need to install mysql
# apt-get update
# apt-get install fakeroot build-essential dpkg-dev libaio-dev

2. download mysql compress file from mysql site and decompress it
# tar zxvf mysql-advanced-5.5.28-linux2.6-x86_64.tar.gz

3. move it to /usr/local and create software link for mysql
# mv mysql-advanced-5.5.28 /usr/local/
# cd /usr/local
# ln -s mysql-advanced-5.5.28 mysql

4.create mysql user and group
# adduser -d /home/mysql -m mysql

5. change file owner and install mysql
# chown -R mysql /usr/local/mysql
# chown -R mysql /usr/local/mysql

6.install mysql server
#/usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/var/lib/mysql --user=mysql

7.copy mysql configure to /etc/
#cp suuport-files/my-medium.cnf /etc/my.cnf

8.start mysql server
#/usr/local/mysql/bin/mysql_safe --user=mysql &

9. add mysql search path to default environment
# vim /etc/environments
add /usr/local/mysql/bin to the end of the line

10. cp mysql script to /etc/init.d/
# cp support-file/mysql.server /etc/mysql.server

11. login mysql and change root password
#mysql -u root

grant all on *.* to 'root'@'localhost' identified by 'xxxxx'
flush privileges

12. restart mysql to confirm the password for rooot
# /etc/init.d/mysql.server restart

enable sftp transfer to instead of the ftp protocol

1. add these lines to /etc/ssh/sshd_config

Subsystem sftp internal-sftp

Match Group sftpusers
    ChrootDirectory %h
    ForceCommand internal-sftp
    AllowTcpForwarding no

2. add one group name sftpuser

#groupadd sftpusers

2. add one user for testing

useradd -g sftpusers -d /home/sftp/user1 -m user1

usermod -s /bin/false

3. add /bin/false to /etc/shells 

4. change permission for the user

# chown root:root /home/sftp/user1

# chmod 755 /home/sftp/user1

5. restart the ssh service

# /etc/inti.d/ssh restart

6. create another folder to writable and mount it to the subfolder

# mkdir -p /home/sftp-write/user1

# mkdir /home/sftp/incoming

# mount --bind /home/sftp-write/user1/ /home/sftp/user/incoming

7. testing for the sftp  

#sftp user1@xxxx.xxxx.xxxx.xxxx

ssh autologin to multi server

situation:
         three server with ip 10.10.10.1, 10.10.10.2, 10.10.10,3

1. install all open ssh package on these servers
# apt-get install ssh

2. create the same user account on these servers
# useradd -d /home/user1 -m user1
# passwd user1

3. on one of these three server , generate the public key
# ssh-keygen -t rsa

4. copy public key to the others
#ssh-copy-id -i user1@10.10.10.2
#ssh-copy-id -i user1@10.10.10.3

5. testing the autologin function
#ssh 10.10.10.2

how to install mongoDB

1. insert into key from url to get mongDB key
#sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10

2.modify the apt source.ist
#echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/mongodb.list

3. update the repository
#sudo apt-get update

4. install mongoDB
#sudo apt-get install mongodb-10gen

5.testing the mongoDB
#mongo

nfs disk

1.modify /etc/exportfs
/disk1      10.x.x.x(ro,async,no_root_squash,no_subtree_check)

2. export setting
# exportfs

3. restart nfs service
#/etc/init.d/nfs-kernel-server restart

4.if some client just support nfs 3 like vmware
run this command to use version 3
#rpc.mount --nfs-version 3