Configure MySql and ODBC Connector In Windows 2012 Server

Installing MySql and its ODBC Connector In the Windows 2012 Server

Download The Microsoft Visual C++ 2010 Redistributable
http://www.microsoft.com/en-gb/download/details.aspx?id=14632

Download and install the ODBC Connector
http://cdn.mysql.com/Downloads/Connector-ODBC/5.3/mysql-connector-odbc-5.3.4-winx64.msi

Downoading the MySQL
http://cdn.mysql.com/Downloads/MySQL-5.6/mysql-5.6.26-winx64.zip

c:\mysql>cd bin
c:\mysql\bin>mysqld --install
Service successfully installed.

Go to Services and start the Mysql Services.

c:\mysql\bin>mysql -u root -p
>>No password is needed for first time

Set the root Password
=====================
mysql>
mysql> UPDATE mysql.user SET password=PASSWORD('redhat') WHERE user='root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3  Changed: 3  Warnings: 0

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from mysql.user;
+------+-----------+
| user | host      |
+------+-----------+
| root | 127.0.0.1 |
| root | ::1       |
|      | localhost |
| root | localhost |
+------+-----------+
4 rows in set (0.00 sec)


mysql> delete from mysql.user where user='';
Query OK, 1 row affected (0.00 sec)

mysql> select user,host from mysql.user;
+------+-----------+
| user | host      |
+------+-----------+
| root | 127.0.0.1 |
| root | ::1       |
| root | localhost |
+------+-----------+
3 rows in set (0.00 sec)


mysql> create database fileserver;
Query OK, 1 row affected (0.01 sec)

mysql>GRANT ALL PRIVILEGES ON fileserver.* TO 'fileserver'@'localhost' IDENTIFIED BY 'fileserver';
Query OK, 0 rows affected (0.02 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)

mysql>

Mysql Cluster Using Mysql NDB

Mysql Cluster using NDB(Network DataBase) provides a self healing mysql Cluster which provides a good performance. Mainly the Mysql Cluster Contains 3 Components ie using Management , SQL and Data parts. 

Here we will be configuring two Management and two Data/SQL (together in One server) for the HA. Once the configuration is completed we will have two end points to connect to te database so we need to keep an Load balancer in front of the SQL end points.

OS used is RHEL7
Selinux Enabed
Firewall Disabled

Management Server## Perform the Following steps in both the Management Server's. 

Install Needed Packages 

=================

yum install glibc.i686  ncurses-libs.i686 libstdc++.i686 libgcc.i686 -y


Make Directories and Download the Cluster Files
====================================

mkdir /usr/src/mysql-mgm
cd /usr/src/mysql-mgm
wget http://cdn.mysql.com/Downloads/MySQL-Cluster-7.4/mysql-cluster-gpl-7.4.7-linux-glibc2.5-i686.tar.gz
tar zxvf mysql-cluster-gpl-7.4.7-linux-glibc2.5-i686.tar.gz

cd mysql-cluster-gpl-7.4.7-linux-glibc2.5-i686
cp bin/ndb_mgm* /usr/bin/
chmod 755 /usr/bin/ndb_mgm*


mkdir /var/lib/mysql-cluster
vi /var/lib/mysql-cluster/config.ini
==========================================
[NDBD DEFAULT]
NoOfReplicas=2
DataMemory=80M
IndexMemory=18M
[MYSQLD DEFAULT]

[NDB_MGMD DEFAULT]
DataDir=/var/lib/mysql-cluster
[TCP DEFAULT]

# Section for the cluster management node
[NDB_MGMD]
NodeId=1
# IP address of the first management node (this system)
HostName=192.168.70.130

[NDB_MGMD]
NodeId=2
#IP address of the second management node
HostName=192.168.70.131

# Section for the storage nodes
[NDBD]
# IP address of the first storage node
HostName=192.168.70.132
DataDir= /var/lib/mysql-cluster
[NDBD]
# IP address of the second storage node
HostName=192.168.70.133
DataDir=/var/lib/mysql-cluster
# one [MYSQLD] per storage node
[MYSQLD]
[MYSQLD]
==========================================

chown mysql. /var/lib/mysql-cluster -R

To start the Management Service
========================
ndb_mgmd -f /var/lib/mysql-cluster/config.ini --configdir=/var/lib/mysql-cluster/

Data And SQL Server#Perform this on both of the Server's
==============================================

Install the needed Packages
====================
yum install libaio.i686 libaio-devel.i686 -y
yum install perl -y
yum -y install perl-Data-Dumper

Download the packages
cd /usr/local/
wget http://cdn.mysql.com/Downloads/MySQL-Cluster-7.4/mysql-cluster-gpl-7.4.7-linux-glibc2.5-i686.tar.gz
tar zxvf mysql-cluster-gpl-7.4.7-linux-glibc2.5-i686.tar.gz
mv /root/mysql-cluster-gpl-7.4.7-linux-glibc2.5-i686.tar.gz mysql
chown mysql. mysql -R
cd mysql

Initializing the database
scripts/mysql_install_db --user=mysql --datadir=/usr/local/mysql/data

cp support-files/mysql.server /etc/init.d/
chmod 755 /etc/init.d/mysql.server

cd /usr/local/mysql/bin
mv * /usr/bin
cd ../

vi /etc/my.cnf
============
[mysqld]
ndbcluster
# IP address of the cluster management node
ndb-connectstring=192.168.70.130,192.168.70.131
[mysql_cluster]
# IP address of the cluster management node
ndb-connectstring=192.168.70.130,192.168.70.131
============

mkdir /var/lib/mysql-cluster

cd /var/lib/mysql-cluster
ndbd --initial
/etc/init.d/mysql.server start

After this, secure the MySQL installation by running the appropriate script:

/usr/local/mysql/bin/mysql_secure_installation


Testing 
In the Management Node check the command ndb_mgm and check the status

Delete a nat rule in iptables

First of all I list all the rules including line numbers like this;

iptables -L -t nat –line-numbers

I then look at the output that will be similar to the below

In this example lets say I want to delete rule number 2 in the PREROUTING chain, I would enter the following;

iptables -t nat -D PREROUTING 2

In English the above line means remove line number 2 from the PREOUTING chain, I would then run the first command again to check my iptables file, then save the iptables file and restart the iptables service.

iptables -L -t nat –line-numbers

service iptables save

service iptables restart

All the above is carried out running on Centos, you may have to edit slightly for your particular distribution.

Linux tune the VM subsystem.

Tuning the memory subsystem in Linux is a powerful but delicate task. The right settings can boost your system’s performance, but incorrect changes may cause instability or slowdowns. Always adjust one parameter at a time and monitor your system before making further changes.

Exploring /proc/sys/vm

The /proc/sys/vm directory contains files that represent kernel parameters for the virtual memory subsystem. You can read and write to these files to tune system behavior.

To view the files, use:
cd /proc/sys/vm
ls -l

Sample output:
-rw-r--r-- 1 root root 0 Oct 16 04:21 block_dump
-rw-r--r-- 1 root root 0 Oct 16 04:21 dirty_background_ratio
-rw-r--r-- 1 root root 0 Oct 16 04:21 dirty_expire_centisecs
-rw-r--r-- 1 root root 0 Oct 16 04:21 dirty_ratio
-rw-r--r-- 1 root root 0 Oct 16 04:21 dirty_writeback_centisecs
-rw-r--r-- 1 root root 0 Oct 16 04:21 drop_caches
-rw-r--r-- 1 root root 0 Oct 16 04:21 swappiness
-rw-r--r-- 1 root root 0 Oct 16 04:21 vfs_cache_pressure
...

Key Parameters and Their Effects

1. dirty_background_ratio
   Purpose: Sets the percentage of system memory filled with “dirty” pages (pages to be written to disk) before the background writeback daemon (pdflush) starts writing them out.

Check current value:
sysctl vm.dirty_background_ratio

Default example:
vm.dirty_background_ratio = 10

Tuning:
Increasing this value (for example, to 20) means less frequent flushes, which may benefit systems with fast disks but can cause larger flushes at once.
sysctl -w vm.dirty_background_ratio=20

2. swappiness
   Purpose: Controls how aggressively the kernel swaps memory pages to disk.

Check current value:
sysctl vm.swappiness

Default example:
vm.swappiness = 60

Tuning:
Lower values reduce swapping (good for desktops), higher values increase swapping (can benefit workloads with long-sleeping processes).
sysctl -w vm.swappiness=100

3. dirty_ratio
   Purpose: Sets the percentage of system memory that can be filled with dirty pages before processes generating writes must themselves start writing data to disk.

Check current value:
sysctl vm.dirty_ratio

Default example:
vm.dirty_ratio = 40

Tuning:
Lowering this value (for example, to 25) causes data to be written to disk more frequently, reducing the risk of large data loss but possibly impacting performance.
sysctl -w vm.dirty_ratio=25

Best Practices for VM Tuning

• Change one setting at a time.

• Monitor system performance after each change using tools like vmstat, top, or free.

• If performance improves, keep the new setting. If not, revert to the previous value.

• Document your changes for future reference and troubleshooting.

CloudStack Installation and Configuration

CloudStack is an open-source cloud computing platform similar with both OpenNebula And OpenStack .

Managment Server

service iptables stop
chkconfig iptables off

echo " HOSTNAME=controller.example.com" > /etc/hostname
cat /etc/hostname
echo "142.0.42.46 controller.example.com controller " >> /etc/hosts
echo " HOSTNAME=controller.example.com" >> /etc/sysconfig/network
cat /etc/hosts
hostname controller.example.com
hostname
ping -c 3 controller
yum install -y yum-plugin-priorities gedit curl wget nc
yum -y install policycoreutils setroubleshoot
sed -i "s/SELINUX=enforcing/SELINUX=permissive/g" /etc/sysconfig/selinux
sed -i "s/SELINUX=disabled/SELINUX=permissive/g" /etc/sysconfig/selinux
setenforce 0

# vi /etc/yum.repos.d/cloudstack.repo
[cloudstack]
name=cloudstack
baseurl=http://cloudstack.apt-get.eu/rhel/4.2/
enabled=1
gpgcheck=0

yum -y install ntp
service ntpd start
chkconfig ntpd on

yum -y install mysql mysql-server MySQL-python
service mysqld start
chkconfig mysqld on
mysql_install_db
mysql_secure_installation

Downloading vhd-util
wget http://download.cloud.com.s3.amazonaws.com/tools/vhd-util
If the Management Server is RHEL or CentOS, copy vhd-util to /usr/lib64/cloud/common/scripts/vm/hypervisor/xenserver.
If the Management Server is Ubuntu, copy vhd-util to /usr/lib/cloud/common/scripts/vm/hypervisor/xenserver/vhd-util.

yum -y install cloud-client

cloudstack-setup-databases cloud:cloud@localhost --deploy-as=root:mysql-password -i 142.0.42.46
cloudstack-setup-management

Mostly by default the the Dashboard password will be admin and password.

yum -y install nfs-utils
mkdir -p /export/primary
mkdir -p /export/secondary
vi /etc/exports
/export *(rw,async,no_root_squash,no_subtree_check)
# vi /etc/sysconfig/nfs
LOCKD_TCPPORT=32803
LOCKD_UDPPORT=32769
MOUNTD_PORT=892
RQUOTAD_PORT=875
STATD_PORT=662
STATD_OUTGOING_PORT=2020

service rpcbind start
service nfs start
chkconfig nfs on
chkconfig rpcbind on

mkdir -p /mnt/primary
mkdir -p /mnt/secondary
mount -t nfs 142.0.42.46:/export/primary /mnt/primary
mount -t nfs 142.0.42.46:/export/secondary /mnt/secondary

Create a System virtual machine template, you also can get it from official site.

Usage: cloud-install-sys-tmplt: -m <secondary storage mount point> -f <system vm template file> [-h <hypervisor name: kvm|vmware|xenserver> ] [ -s <mgmt server secret key, if you specified any when running cloudstack-setup-database, default is password>][-u <Url to system vm template>] [-F <clean up system templates of specified hypervisor>] [-e <Template suffix, e.g vhd, ova, qcow2>] [-o <Database server hostname or ip, e.g localhost>] [-r <Database user name, e.g root>] [-d <Database password. Fllowed by nothing if the password is empty>]
or
cloud-install-sys-tmplt: -m <secondary storage mount point> -u <http url for system vm template> [-h <hypervisor name: kvm|vmware|xenserver> ] [ -s <mgmt server secret key>]

/usr/share/cloudstack-common/scripts/storage/secondary/cloud-install-sys-tmplt -m /mnt/secondary -u http://d21ifhcun6b1t2.cloudfront.net/templates/4.2/systemvmtemplate-2013-06-12-master-kvm.qcow2.bz2 -h kvm -s -F

On The Compute Node

service iptables stop
chkconfig iptables off

echo " HOSTNAME=compute.example.com" > /etc/hostname
cat /etc/hostname
echo "142.0.42.46 compute.example.com controller " >> /etc/hosts
echo " HOSTNAME=compute.example.com" >> /etc/sysconfig/network
cat /etc/hosts
hostname compute.example.com
hostname
ping -c 3 controller
vi /etc/yum.repos.d/cloudstack.repo
[cloudstack]
name=cloudstack
baseurl=http://cloudstack.apt-get.eu/rhel/4.2/
enabled=1
gpgcheck=0

yum -y install ntp

yum -y install cloudstack-agent
yum -y install qemu-kvm

Modify the libvirt configuration files, remove the following comments, change the value of auth_tcp to “none”
vi /etc/libvirt/libvirtd.conf
listen_tls = 0
listen_tcp = 1
tcp_port = "16509"
auth_tcp = "none"
mdns_adv = 0

Getting Client IP Behind the Aws ELB (Http/Http Mode)

We need to add the Following Logformat to get the clients IP.

We use the X-Forwarded-For entry in the apache configuration to get it done.

# The following directives define some format nicknames for use with
# a CustomLog directive (see below).
#
LogFormat "\"%{X-Forwarded-For}i\" %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined_new
#....

#...
#
# START_HOST example.com

    ServerName example.com
    DocumentRoot "/var/www/example.com/html"

        Options Includes FollowSymLinks
        AllowOverride All
        Order allow,deny
        Allow from all

    CustomLog /var/www/logs/example.com/access_log combined_new
    ErrorLog /var/www/logs/example.com/error_log

# END_HOST example.com

Jira
===
JIRA is a commercial software product that can be licensed for running on-premises or available as a hosted application. Pricing depends on the maximum number of users.

Installing Java
yum install java-1.7.0*

Installing Database
yum install -y mariadb-server
mysql -u root -p
CREATE DATABASE jiradb CHARACTER SET utf8 COLLATE utf8_bin;
GRANT SELECT,INSERT,UPDATE,DELETE,CREATE,DROP,ALTER,INDEX on jiradb.* TO 'jira'@'localhost' IDENTIFIED BY 'jira_xuZEKE4N';
flush privileges;
SHOW GRANTS FOR 'jira'@'localhost';
exit;

Install Jira:
Download atlassian-jira-6.2.2-x64.bin (32/64 bit) from https://www.atlassian.com/software/jira/download. And install as below-
wget https://downloads.atlassian.com/software/jira/downloads/atlassian-jira-6.4.5-x64.bin
./atlassian-jira-6.4.5-x64.bin
===================================================================
[root@adancsvso002 opt]# sh atlassian-jira-6.4.5-x64.bin
Unpacking JRE ...
Starting Installer ...
May 26, 2015 6:28:39 PM java.util.prefs.FileSystemPreferences$1 run
INFO: Created user preferences directory.

This will install JIRA 6.4.5 on your computer.
OK [o, Enter], Cancel [c]

Choose the appropriate installation or upgrade option.
Please choose one of the following:
Express Install (use default settings) [1], Custom Install (recommended for advanced users) [2, Enter], Upgrade an existing JIRA installation [3]


Where should JIRA 6.4.5 be installed?
[/opt/atlassian/jira]

Default location for JIRA data
[/var/atlassian/application-data/jira]

Configure which ports JIRA will use.
JIRA requires two TCP ports that are not being used by any other
applications on this machine. The HTTP port is where you will access JIRA
through your browser. The Control port is used to Startup and Shutdown JIRA.
Use default ports (HTTP: 8080, Control: 8005) - Recommended [1, Enter], Set custom value for HTTP and Control ports [2]

JIRA can be run in the background.
You may choose to run JIRA as a service, which means it will start
automatically whenever the computer restarts.
Install JIRA as Service?
Yes [y, Enter], No [n]


Extracting files ...


Please wait a few moments while JIRA starts up.
Launching JIRA ...
Installation of JIRA 6.4.5 is complete
Your installation of JIRA 6.4.5 is now ready and can be accessed via your
browser.
JIRA 6.4.5 can be accessed at http://localhost:8080
Finishing installation ...
[root@adancsvso002 opt]#
===================================================================

firewall-cmd --zone=public --add-port=8080/tcp --permanent
firewall-cmd --zone=public --add-port=8005/tcp --permanent
firewall-cmd --reload

wget http://cdn.mysql.com/Downloads/Connector-J/mysql-connector-java-5.1.35.tar.gz
tar zxvf mysql-connector-java-5.1.35.tar.gz
cp -rp mysql-connector-java-5.1.35/mysql-connector-java-5.1.35-bin.jar /opt/atlassian/jira/lib/

systemctl restart mariadb
systemctl status mariadb
service jira start

http://xxx.xxx.xxx.xxx:8080/