حسين شريف

Linux System Administrator

responsible for effective provisioning, installation/configuration, operation, and maintenance of systems hardware and software and related infrastructure. This individual participates in technical research and development to enable continuing innovation within the infrastructure. This individual ensures that system hardware, operating systems, software systems, and related procedures adhere to organizational values, enabling staff, volunteers, and Partners.

- Installing And Configure Operating System: Centos, Ubuntu & Windows.
- Managing different cloud service providers such as AWS, Azure and hosting dedicated server such as Hetzner & OVH.
- Installing and Configuring various types of Load Balancers for different projects : Nginx, Amazon ALB/ELB and HAproxy .

- Troubleshooting production environment issues and provide needed help in patching it.
- Deploying company projects, that are written in different programming languages, PHP.
- Administrating and troubleshooting live projects frameworks, Yii1 & Yii2
- Installing and Configuring various types of Load Balancers for different projects .
- Deploying and administrating MySQL/MariaDB replications.
- Writing Systemd/Upstart scripts to manage customized services.
- Writing automated jobs for both development and production deployment using : Bash and automation tools such as Ansible.
- Deploying, administrating and using alerting and monitoring tools : Nagios.
- Deploying and configuring high available cache components such as Redis Cluster for memcached.
- Manganing Shared, Virtual & Dedicated Hosting.
- Shared hosting servers managment : WHM.
- Install and configure Virtualization: Xenserver and Vmware .
- Hosting Billing setup and installation: WHMCS.
- VOIP service installation and configuration: Asterisk and Voipswitch.

System Administrator:

Linux
LAN configuration & administration related to network
configure and troubleshooting and Managing all types of installation and Upgradation on Linux servers
Mail(full with anti spam-virus, ssl and webmail)
Dhcp, ldap, samba, bind, squid, bigbluebutton, apache
&Integration in Between
LVM (Logical volume manager) administration
KVM and VM Administration
Troubleshooting with performance related issues
Monitoring & troubleshooting with performance related issues
Installation of Linux for new build environment
User Management & Administration
File system management
Job Scheduling and Automating process using CRON & AT
Performance monitoring utilities like IOSTAT, VMSTAT, SAR, TOP and PRSTAT
RAID configuration and RAID concepts
Installation of patches and packages
Configuring and managing network interface
Basic creation and troubleshooting on scripting like Shell/bash
(Proxys Sync, Autobackup, Amazon S3 Cloud and connectivity detect)

Windows (2008)
Update Server (WSUS)
Active Directory
Exchange
DNS
DHCP
ISA

Firewall(Software)
Build by Iptables
Fail detect
Multi WAN
MAC, IP and Port Restriction

Citrix
1-Xenserver(expert)
VM, BackUp, Installation, Update, Upgrade and Troubleshooting
2-Xendesktop (intermediate)
implementation

Cisco
router 800 series configuration (vlans, access lists).

Oracle APPS (ERP) DBA
Installation, Configuration, Upgrading, Patching, Maintain,
Tuning, and Cloning of Oracle APPS.
Installing of Red Hat Enterprise Linux.
Installation and Maintenance of Oracle Application Server.
Installing Oracle Data Guard