Deploying an Application Load Balancer in AWS

Pre-requisites: Two EC2 instances deployed in two different availability zones to work as the web servers. Script to include in the EC2 user data section to deploy the Apache web server.     #!/bin/bash yum update -y yum install httpd -y echo “<html><body><h1>The Apache Server!</h1></body></html>” >/var/www/html/index.html systemctl start httpd    systemctl enable httpd Create the Application…

Use an existing Key Pair in the AWS CloudFormation when deploying an EC2 instance

Under the Parameters section include the Key Pair entry and then from the Resources section reference the Key Pair. Parameters: KeyName: Description: “Name of an existing key pair” Type: String … … … Resources: EC2Instance: Type: ‘AWS::EC2::Instance’ Properties: InstanceType: t3.micro ImageId: ‘ami-008677ef1baf82eaf’ KeyName: Ref: KeyName … …

Oracle-Error: opiodr aborting process unknown ospid ( ) as a result of ORA-609

Background: After shutdown and restarted the oracle instance by an executive, client can’t connect to database instance though database is up and running and listener service is up. OS: Windows Server 2012 x64, Oracle: 11g R2, Data Guard Configured Workaround: From the alert_SID.log file found the below error raised after shutdown and consecutive startup and when…

Show carrier’s current and previous rates information by destination

Background: After rate sheets applied in the billing system provided by the partners/carriers, executive likes to sort out the destination and carrier with their latest applied rates along with their very previous rates with the below format: Carrier Name | Destination | Prefix | Applied Date | Applied Rate | Previous Date | Previous Rate…

CDR cross check to resolute dispute with parties

In telecommunication sometimes it needs to analyze traffic to resolute dispute with parties; in this case either parties or both will provide their CDRs and will cross-check them. CDR cross-checking criteria: CDR should be matched with respect to call: start_time, a_party, b_party and duration Some cases partners have differences in the call pattern for a_party…