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![Page 1: Patch](https://reader035.fdocuments.in/reader035/viewer/2022081413/549a5c10b479598e5c8b4763/html5/thumbnails/1.jpg)
Patch Management
In Solaris and Red Hat
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What is a Patch
A collection of fixes to a problemThree main categories:Security
Bugs in the system that provide unauthorized access (rlogin)
FunctionalityData integrity, reliability (cron)
PerformanceExcessive use of system resources
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Patch Management
The process of determining if a system has the most appropriate software installed.
Where do patches come from?Operating System vendorsApplication distributors
Third party software
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Patch Management
A three step process:DiscoveryDetermination Installation
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Discovery
Online resources & Vendor toolsSolaris
SunSolve & NewslettersSolaris Patch Manager ToolSun Patch Check
Red HatRed Hat Network & Alert Notification ToolRPMRed Hat Update Agent
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SunSolve
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Red Hat Network
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Determination
Comparing what is on your machine to what is availableLevel of importanceSolarisSolaris Patch Manager ToolPatch CheckPatchDiagSun Management Center
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Determination (cont’d)
Solaris (cont’d)Solaris Live UpgradeSolaris Flash Technology
Red HatRed Hat Update AgentRed Hat NetworkRed Hat Network Alert Notification Tool
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Installation
AutomatedSolaris: Solaris Patch Manager, Sun
Management Center, Solaris Live UpdateRed Hat: Red Hat Update Agent, Red Hat
Network, Red Hat Network Alert Notification Tool
ManualSolaris: patchaddRed Hat: rpm
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PM Strategies
Patch Management ProcessDetermine which patches to installFind any patch dependenciesRemove old version of patch Install patch and dependencies
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PM - Solaris
SolarisMonitor newsletters and website regularlyFour Types of patches:
Solaris UpdatesMaintenance UpdatesAlert PatchesAdvisory Patches
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PM - Solaris
Three tiered approach: Install Solaris and Maintenance Updates Install Alert Patches Install patches on a per-issue basis
Patch Installation ProcessTest -> Development -> Production
AutomationSolaris Patch Manager Tool
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PM – Red Hat
Red HatMonitor system status on Red Hat NetworkAdd channels as neededUtilize Red Hat Network Alert Notification
Tool
AutomationRed Hat Update Agent