I've a great passion for linux systems and open source software. Since 2008 I'm working as linux System Engineer for a company, which is developing software that is provided to our customers as SaaS. For some clients we also provide installations "on site". This gave me great experience in working with CentOS and RedHat linux, puppet, kickstart, nginx as a proxy server, DRBD, database clusters using PostgreSQL with streaming replication, BIND, postfix, pki-authentication, bash-scripting and others. I'm also familiar with other linux operating systems like debian, ubuntu and gentoo. Buzzwords: puppet, linux, CentOS, debian, ubuntu, gentoo, nginx, nagios, bash, perl, DNS, BIND, email, postfix, postgrey, carp, DRBD, KVM, ssl, pki, x509, iptables, ipv6, PostgreSQL.
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I have more than 5 years working as a Linux systems administrator specializing in management for cPanel based servers in both virtual and dedicated environments. Stronger areas: Operating Systems: CentOS / Fedora / CloudLinux Control Panels: cPanel / Direct Admin / SolusVM / Kloxo Billing Systems: ClientExec, WHMCS, HostBill Database: MySQL / MariaDB Web Server: Apache / LiteSpeed / Nginx Virtualization: OpenVZ / XEN / KVM Various Others: cPanel DNS Clusters, Any work including the following: Initial setup of the server which includes configuring software/hardware raid, disk partitioning(LVM as well) Installing OS, Control panel, hardening/optimizing the server including firewall, rebuilding Apache / PHP, setup private name servers, migrating accounts to the server, ensuring all sites are working and make adjustments to server if necessary, make further optimizations to server to best fit the current environment.
Over the last 10 years, I have been working as technical support engineer/team leader/infrastructure architect for several large companies (hosting companies with more than 1000 of dedicated and several dozens of VPS servers, ecommerce application companies, small and large companies with different cloud setups from several to several hundreds of instances) My competency lies in planning, development, deployment and setup of new production environments, troubleshooting/support/improvement of existing production systems based on Linux/Unix. Have a lot of experience in automation/monitoring/backup of different distributed environments with LAMP stack and other applications, different clustering, scalability and high-availability techniques.
I'm a creative and hardworking Linux System Administrator and Amazon Web Services Architect and developer. I've been supporting and delivering IT solutions especially for web hosting companies and its set of open source software (Apache, PHP, RoR, MySQL, HAproxy, iptables, OpenVPN and much more) since 2005. I've also worked at IBM managing a farm of more than 1000 Linux and AIX servers as well as its proprietary middleware (DB2, IHS, WebSphere and others).
Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ￼○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace
I am a senior technical engineer who has 15 years IT experience in the following areas: Advanced Linux Cluster Administration Advanced Knowledge of shell scripting Advanced Knowledge of Perl programming Network Administration Network Security (Penetration Testing) Server Auditing Technical Support Virtualization (mainly Parallels Virtuozzo/openVZ/ProxMox) Web hosting Control panels such as cPanel,Plesk,DirectAdmin Tweaking and Optimizing Apache for better performance Hardening PHP Data recovery Asterisk/Trixbox/Elastix/VoIP solutions.
I am experienced in: • Linux Server Management. • PHP Web Development. • Search Engines’ Optimization (SEO). Personal Statement: I am a self-motivated character, ambitious, hard worker and time manager. Personal Skills: · Good communication skills. · Able to work accurately and neatly. · Good organizational skills. · Able to work with minimum supervision. · Able to communicate information accurately. · Can work under pressure and meet deadlines.
Nitin S. Agency Contractor
Melbourne based System Administrator with expertise in Linux Server optimization, security and service deployment on VPS/Physical, Cloud Platforms(AWS,Rackspace). I believe in getting the job done with the best possible quality. Period. Clear timely communication with the clients and their team is always my priority. I have been working with all the major providers: Rackspace, Amazon, Softlayer, Godaddy, Hostgator, Bluehost, Linode, DreamHost, Mediatemple, Lunarpages. Expertise in Linux Administration is as follows (but not limted to) Server Distributions: RedHat, Centos, Fedora, Debian, Ubuntu, Gentoo, Suse, Mandriva, Opensuse, Knoppix, Slackware. Web servers: Apache, Lighttpd, Nginx, Tomcat File servers: Proftpd, Pureftpd, Vsftpd, Sftpd, TFTP, NFS, Samba DNS servers: Bind9, MyDNS, NSD Mail servers: Postfix(TLS,SASL), Exim, Sendmail, Qmail, Dovecot, Courier. Logging services: Syslog, Rsyslog, Syslog-ng Proxy servers: Squid(forward and reverse proxy), nginx, pound, lighttpd. Firewalls: Iptable scripts and Advance Policies Firewall with bruteforce detection. Firewall configuration: NAT, IP Masquerade Jabber servers: Openfire, Ejabberd, Djabberd Database servers: MySQL, Postgresql Backup: Bacula, bash scripts. VPN: PPTP Virtualisation: Openvz/Virtuozzo, Xen, Qemu, KVM, VMware Server, Parallels Workstation, Virtualbox headless, HyperVM. Monitoring: Nagios, munin, zabbix, zenoss Automation: Puppet(fan), custom bash scripts. Revision control: Git(fan), Subversion Package management: yum, rpm, dpkg, aptitude, apt-get, emerge Security: Nessus, John The Ripper, Tiger, PGP, GPG, nmap, Openvas, Snort, Ettercap, arpwatch, SSH, SSL, TLS, TCP Wrappers, Ethereal, dsniff, tcpdump, portsentry, rkhunter, chkrootkit, clamav, SPF, Spamassassin, domain keys. Cloud computing: Amazon (EC2, EBS, S3, CloudWatch), Rackspace services. Assessment tools: sar, vmstat, iostat, mpstat, netstat, iptraf, iftop, lsof, ntop, serverstats Misc services: NTP, Cups, DHCP, Dnsmasq
Oscar Bass Agency Contractor
Expert UNIX system administrator and network engineer. Got a problem? I can solve it! For more than 15 years I have been the I.T. backbone and support for many online companies. I use the most up to date standards for any project I am involved in. I work extremely quick and efficiently. If you have a problem let me help you solve it. OS: Linux - Expert, FreeBSD - Expert, AIX - Expert, HP-UX - Expert, Macintosh OS/X - Expert, Windows Server - Proficient Cloud services: AWS, Rackspace, OpSource, Linode Web servers: Apache, Nginx, Tomcat Database servers: Mysql, Postgresql Monitoring: Nagios, Monit, Munin, Cacti Scripting: bash, perl, shell Virtualization: OpenVZ, Xen, SolusVM Mail servers: Postfix, Exim, Sendmail, Dovecot Control panels: cPanel, Plesk, Direct Admin, Webmin/Virtualmin, ISPconfig, OpenPanel Other: standard network services (DNS, DHCP, LDAP, Samba, SVN/Git, http proxy, jabber, backups, monitoring etc), firewalls (iptables, ipfw, pf)