System administrator by v6XTCxT7

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									       System administrator

A system administrator, systems
administrator, or sysadmin, is a person
employed to maintain and operate a
computer system and/or network. System
administrators may be members of an
information technology department.


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Duties of a system administrator
• The duties of a system administrator are
  wide-ranging, and vary widely from one
  organization to another
• Sysadmins are usually charged with
  installing, supporting, and maintaining
  servers or other computer systems, and
  planning for and responding to service
  outages and other problems.

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          Duties Continued
• Other duties may include:
  – scripting or light programming
  – project management for systems-related
    projects
  – supervising or training computer operators




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                   Skills
• The subject matter of systems
  administration includes computer systems
  and the ways people use them in an
  organization
• This entails a knowledge of :
  – of operating systems and applications
  – hardware and software troubleshooting
  – knowledge of the purposes for which people
    in the organisation use the computers

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                 Skills…..
• However, perhaps the most important skill
  to a system administrator is problem
  solving -- frequently under various sorts of
  constraints and stress
• System administrators are not software
  engineers or developers




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• when dealing with Internet-facing or
  business-critical systems, a sysadmin
  must have a strong grasp of computer
  security
• In some organizations, computer security
  administration is a separate role
  responsible for overall security and the
  upkeep of firewalls and intrusion detection
  systems, but all sysadmins are generally
  responsible for the security of the systems
  in their keep.

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             Related fields
• Many organizations staff other jobs related
  to systems administration
• A database administrator (DBA) maintains
  a database system, and is responsible for
  the integrity of the data and the efficiency
  and performance of the system.
• A network administrator maintains network
  infrastructure such as switches and
  routers, and diagnoses problems with
  these or with the behavior of network-
  attached computers
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• A security administrator is a specialist in
  computer and network security, including the
  administration of security devices such as
  firewalls, as well as consulting on general
  security measures.
 A web administrator maintains web server
  services (such as Apache or IIS) that allow for
  internal or external access to web sites. Tasks
  include managing multiple sites, administering
  security, and configuring necessary components
  and software. Responsibilities may also include
  software change management.


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• Technical support staff respond to individual
  users' difficulties with computer systems, provide
  instructions and sometimes training, and
  diagnose and solve common problems.
• A computer operator performs routine
  maintenance and upkeep, such as changing
  backup tapes or replacing failed drives in a
  RAID. Such tasks usually require physical
  presence in the room with the computer; and
  while less skilled than sysadmin tasks require a
  similar level of trust, since the operator has
  access to possibly sensitive data.


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      Resposibilites of a system
           administrator
• A system administrator's responsibilities
  might include:
    1. Analyzing system logs and identifying
    potential issues with computer systems.
   2. Introducing and integrating new
    technologies into existing data center
    environments.
   3. Performing routine audits of systems and
    software.

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• Performing backups
• Applying operating system updates,
  patches, and configuration changes.
• Installing and configuring new hardware
  and software.
• Adding, removing, or updating user
  account information, resetting passwords,
  etc
• Answering technical queries.


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• Responsibility for security.
• Responsibility for documenting the
  configuration of the system.
• Troubleshooting any reported problems.
• System performance tuning
• Ensuring that the network infrastructure is
  up and running




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• System administrators, in larger
  organizations, tend not to be system
  architects, system engineers, or system
  designers. However, like many roles in this
  field, demarcations between systems
  administration and other technical roles
  often are not well defined in smaller
  organizations. Even in larger
  organizations, senior systems
  administrators often have skills in these
  other areas as a result of their working
  experience.

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• In smaller organizations, IT/computing
  specialties are less often discerned in
  detail, and the term system administrator
  is used in a rather generic way — they are
  the people who know how the computer
  systems work and can respond when
  something fails.




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System Administrator Privileges
• The term system administrator may also
  be used to describe a privilege which a
  computer owner must obtain on his or her
  own computer to perform certain actions
  even if the computer is not part of a larger
  system.




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