Devops

Multi-Cloud Deployment Tools

• Terraform

Cloud technologies:
• AWS EC2, S3, EBS, ELB, cloudformation
• Google Load Balancer, Compute Engine, Templates , Instance Group management
• Rackspace
Scripting: Bash, Python
IPTABLES, TCPDUMP: 
• Denying of any IP’s for using of some webserver.
• Content Filtering.
• Denying of user from using services.
• Allowing IP's for particular application through hosts.allow and hosts.deny.


Domain and network server:
• DNS: Maintaining records like MX, A, PTR, SPF, NS, CNAME.     
• NFS: mounting filesystem through NFS.
• SAMBA: Managing share for internal use.


Web Server (Apache, Tomcat, nginx, solr, )-
• Installation of apache and tomcat.
• Deploying application to web server like php, static
• Deploying application to tomcat like solr or java applications
• Installing modjk and integration of apache to tomcat server.
• Defining JVM memory for different application and permgen space too.
• Apache redirection of urls, aliasing of urls. Nginx redirect and certain rules.
• Setting up different type of virtual servers like Name based and port based.
• Writing apache and nginx rewrite rules to redirect and rewrite urls.


Database(mysql):
• Creation of database, tables,users
• User authentication and troubleshooting of performance and slow query.
• Setting up replication of master master and master slave and troubleshooting.
• Clustering of mysql servers.
• Backup of mysql servers.


Configuration Management Tool (Puppet, ansible):
• Configuration of different applications through Puppet or ansible
• Managing application releases through puppet or ansible
• Writing playbook and modules for puppet or ansible


Code Management tool( GITLAB, JENKINS):
• Managing Code through GITLAB.
• Continuous integration of codes through Jenkins.


Monitoring tool(Nagios, Zabbix, netdata, cloudwatch,slackdriver):
• Configuration of tool like nagios, netdata, zabbix, graphite
• Monitor different critical parameters on the server.
• Configuration and managing zabbix,nagios tool to get all server and application related issues..
• Writing plugins for nagios and zabbix on , bash.


Logging and Graphing(ELK, Graphite, Graffana)


Load balancer(google load balancer ELB, Haproxy)-
• Setting different LB methods like round robin, presistent type cookie, presistent type IP, member ratio, least connection.
Setting cloud LB for applications


Linux Flavours: Debian, Ubuntu, Centos, RHEL