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Roles & Responsibilities of Linux System Administrator
Job Related Tasks
· Install Operating system
· Manage hardware, firmware and operating system
· Services installation and configuration
· Upgrade Linux servers
· Migrate OS from older hardware to newer hardware
· Patch management
· 3 rd party software installation and configuration
Different Type of Issues or Troubleshooting
· Server is running slow, it take a long time to login
· Disk space is full
· Need more disk space
· NTP is not working
· Server cannot send email Sendmail is not working
· Cant mount NFS file system or CIFS share
· Cannot restart a service
· Cannot reach a server (network related)
· Unable to resolve a hostname from DNS
· Can’t get to the DNS server
· Cant download a new rpm package from redhat.com using yum command
· Log file is too big
· Server loses IP every time it reboots
· Filesystem is corrupted
· Rsyslog is not sending logs to the central logger
· Cant mount samba share
· Samba share is very slow
· Cannot SSH to a server
· Cannot copy files to a directory, permission denied
· Cannot login as root using SSH protocol
· User cannot write to his/her home directory. User home directory is full
· User cant login through username and password
· Incorrect hostname
· Memory is high or full
· Login issue with username and password
· Writing scripts to automate tasks
·
Backup is not working
· Setup cronjobs to schedule tasks
Documentation
· Create and update all documentation
Meetings
· Meet with the vendors or management and keep them updated on the progress of the job/tasks
Additional Tools
· Monitoring tools
· Documentation tools
· Ticketing system
· Timesheet system
· Configuration tools (Redhat Satellite, Puppet, kickstart etc.)
Vendor Relation:
· Redhat · HP · Dell · Cisco · Sun/Oracle · VMWare
· 3 rd Party vendors (Application related)
· Microsoft
Third Party Applications Support
· Any application that will be running on Linux servers
Licensing
· Keeping track of all
licensing
Other Job Related Tasks
· Being on-call
· Recommendation or introduce new technology
· Attend training or job related seminars
· Project management
· Evaluate 3rd party tools
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