System and Network Administration

With decades of experience in many areas of Linux and UNIX system administration, we can help with:

  • Linux server or virtual server sizing, configuration and deployment, whether on real hardware or in the cloud.
  • Mail server (Sendmail, Postfix) and IMAP server (Dovecot, Cyrus, etc) setup and configuration.
  • PostgreSQL database sizing, configuration, deployment, and optimization, including slow query analysis and configuration of streaming replication and hot-standby.
  • Shell-scripting and automation to reduce system administration overhead.
  • Asterisk VoIP PBX setup and management.
  • Monitoring and alerting.
  • Performance metric gathering, baselining and analysis.
  • Firewall setup and configuration.

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