LSyncd Rumi, April 24, 2013 I have a situation where there is one critical website under our company server is critically need to be sync to our backup server. Sync means whatever changes happen in master server, it will replicated to slave server. Yes, you can rsync. But, I do not want to schedule the… Continue Reading
High Availability: Configure Piranha for HTTP, HTTPS and MySQL Rumi, April 24, 2013April 24, 2013 In this post we will complete over the Piranha configuration with HTTP and HTTPS load balancing using direct-routing with firewall marks and MySQL load balancing using direct-routing only. HTTP/HTTPS will need to be accessed by users via virtual public IP 130.44.50.120 while MySQL service will be accessed by web servers… Continue Reading
MySQLDump Shell script for backup Rumi, April 21, 2013 You can use the following script to dump mysql database and can add to crontab entry for daily backup! #!/bin/sh DAY=`/bin/date +%Y%m%d` TFILE="/backup/MYDB.$DAY.gz" mysqldump -u root -p'MYPASSWORD' MYDB | gzip > $TFILE echo "cache dump completed, dump script by rumi (hasan.emdad@mango.com.bd)" Continue Reading
Daily Shell Backup Script Rumi, April 19, 2013 #!/bin/sh DAY=`/bin/date +%Y%m%d` TFILE="/var/log/pdns-cache/$(basename $0).$DAY.csv" rec_control dump-cache $TFILE echo "cache dump completed, dump script by rumi (hasan.emdad@mango.com.bd)" Continue Reading
Manage Multiple MySQL Servers using PHPmyAdmin Rumi, April 19, 2013April 19, 2013 In my environment, I have 5 different MySQL database servers running separately under different geographical location. Since it run standalone and not in cluster mode, I need to have one platform to manage these database servers altogether. PHPmyAdmin is able to do this, with some changes on the configuration files…. Continue Reading
CentOS: Configure Piranha as Load Balancer (Direct Routing Method) Rumi, April 19, 2013 I am currently working on a web cluster project using CentOS. In this project, I have 2 web servers running on Apache and mounted the same document root to serve the HTTP content. I also have 2 servers in front of it to become the load balancer and failover to… Continue Reading
Munin adding up new eth interface Rumi, April 17, 2013 root@pluto:/usr/share/munin/plugins# ./if_ suggest ath0 eth0 –shell munin-node-configure –shell creates symlink commands to link useful plugins from the plugin library to the plugin service directory (usually /etc/munin/plugins). To continue the if_ example: root@pluto:/usr/share/munin/plugins# munin-node-configure –shell ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_ath0 ln -s /usr/share/munin/plugins/if_ /etc/munin/plugins/if_eth0 Continue Reading
John Goddard- World Famous Adventurer Rumi, April 7, 2013 One rainy afternoon an inspired 15-year old boy named John Goddard sat down at his kitchen table in Los Angeles and wrote three words at the top of a yellow pad, "My Life List." Under that heading he wrote down 127 goals. These were not simple or easy goals. They… Continue Reading
Centos Install and Configure MRTG Rumi, April 6, 2013 The Multi Router Traffic Grapher (MRTG) is a tool to monitor the traffic load on network-links. MRTG generates HTML pages containing PNG images which provide a LIVE visual representation of this traffic. You need the following packages: mrtg : Multi Router Traffic Grapher net-snmp and net-snmp-utils : SNMP (Simple Network… Continue Reading
Creating a Certificate Signing Request Using Certreq.exe Rumi, April 6, 2013 Create a file named CSRParameters.inf on the C:\ drive using the contents below as a template (replace the single quotes with double quotes): [NewRequest] Subject="CN=mailgw.mango.com.bd,OU=IIG,O=Mango Teleservices Limited,S=Not Applicable,L=Dhaka,C=BD" KeySpec=1 KeyLength=2048 Exportable=TRUE MachineKeySet=TRUE SMIME=False PrivateKeyArchive=FALSE UserProtected=FALSE UseExistingKeySet=FALSE ProviderName="Microsoft RSA SChannel Cryptographic Provider" ProviderType=12 RequestType=PKCS10 KeyUsage=0xa0 Silent=TRUE [EnhancedKeyUsageExtension] OID=1.3.6.1.5.5.7.3.1 Open a command… Continue Reading