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debian:upgradepathtemplate [2024/04/17 19:38]
51.174.65.41 old revision restored (2022/11/12 13:32) 		debian:upgradepathtemplate [2024/04/30 10:43]
65.108.0.71 old revision restored (2022/11/16 21:13)
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 I will normally create a complete system clone and use this template to work out the entire correct and functional path for the production system in question. I will normally create a complete system clone and use this template to work out the entire correct and functional path for the production system in question.
- 
-Debian Release upgrade paths: 
- 
-  Jessie -> Buster -> Bullseye 
-  Stretch -> Buster -> Bullseye 
-  Buster -> Bullseye 
  
 ===== 1. Preparing for the upgrade ===== ===== 1. Preparing for the upgrade =====
  
  
-==== 1.1. Back up any data or configuration information ==== +1.1. Back up any data or configuration information 
- +1.2. Inform users in advance 
-==== 1.2. Inform users in advance ==== +1.3. Prepare for downtime on services 
- +            Set maintainance window for upgrade with buffer 
-==== 1.3. Prepare for downtime on services ==== +1.4. Prepare for recovery 
- +            Verify the recoverability of system from backup image 
- Set maintainance window for upgrade with buffer +1.5. Prepare a safe environment for the upgrade 
- +            Local terminal or SSH access 
-==== 1.4. Prepare for recovery ==== +1.6. Develop tests for section 3.3 that will ensure correct execution of needed tasks 
- +            i.e.: 
- Verify the recoverability of system from backup image +                a. Web server delivers correctly 
- +                b. php scripts execute correctly 
-==== 1.5. Prepare a safe environment for the upgrade ==== +                c. DB runs correctly 
- +                d. mail works
- Local terminal or SSH access +
- +
-==== 1.6. Develop tests for section 3.3 that will ensure correct execution of needed tasks ==== +
- +
- i.e.: +
-  a. Web server delivers correctly +
-  b. php scripts execute correctly +
-  c. DB runs correctly +
-  d. mail works+
  
 ===== 2. Checking system status ===== ===== 2. Checking system status =====
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     # apt-forktracer | sort     # apt-forktracer | sort
  
-==== 2.1. Review actions pending in package manager ==== +2.1. Review actions pending in package manager 
- +            # aptitude 
-    # aptitude +            Select GO and review 
-  Select GO and review +2.2. Disabling APT pinning 
- +            check /etc/apt/preferences & /etc/apt/preferences.d/ for entries 
-==== 2.2. Disabling APT pinning ==== +2.3. Checking packages status 
- +            # dpkg --audit 
- check /etc/apt/preferences & /etc/apt/preferences.d/ for entries +            # aptitude search "~ahold" 
- +            # dpkg --get-selections | grep 'hold$'
-==== 2.3. Checking packages status ==== +
- +
-  # dpkg --audit +
-  # aptitude search "~ahold" +
-  # dpkg --get-selections | grep 'hold$' +
- +
- To remove a hold on a package: +
-  echo package_name install | dpkg --set-selections +
- +
-==== 2.4. Remove proposed-updates section if present in /etc/apt/sources.list ==== +
- +
-==== 2.5. Verify Unofficial sources are available for target Debian version ====+
  
 +         To remove a hold on a package: echo package_name install | dpkg --set-selections
 +2.4. Remove proposed-updates section if present in /etc/apt/sources.list
 +2.5. Verify Unofficial sources are available for target Debian version
  
 ===== 3. Upgrading current version ===== ===== 3. Upgrading current version =====
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 3.1. Update current installation 3.1. Update current installation
-  # sudo apt update+            # sudo apt update
 3.2. Upgrade current installation 3.2. Upgrade current installation
-  # sudo apt upgrade+            # sudo apt upgrade
 3.3. Check functionality 3.3. Check functionality
- Verify all services required of current host is functioning correctly+            Verify all services required of current host is functioning correctly
 3.4. Upgrade current distribution 3.4. Upgrade current distribution
-  # sudo apt dist-upgrade+            # sudo apt dist-upgrade
 3.5. Check functionality 3.5. Check functionality
- see 3.3 above+            see 3.3 above
  
 ===== 4. Preparing sources for APT ===== ===== 4. Preparing sources for APT =====
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 4.1. Adding APT Internet sources 4.1. Adding APT Internet sources
- +            # sudo sed -i 's/CURRENT_RELEASE/TARGET_RELEASE/g' /etc/apt/sources.list 
-  # sudo sed -i 's/CURRENT_RELEASE/TARGET_RELEASE/g' /etc/apt/sources.list +            # sudo sed -i 's/CURRENT_RELEASE/TARGET_RELEASE/g' /etc/apt/sources.list.d/*
-  # sudo sed -i 's/CURRENT_RELEASE/TARGET_RELEASE/g' /etc/apt/sources.list.d/* +
 4.2. Adding APT sources for a local mirror 4.2. Adding APT sources for a local mirror
- +            Only required for special in-house software
- Only required for special in-house software +
 4.3. Adding APT sources from optical media 4.3. Adding APT sources from optical media
- +            Only required for special 3rd party delivered software
- Only required for special 3rd party delivered software+
  
 ===== 5. Upgrading packages ===== ===== 5. Upgrading packages =====
debian/upgradepathtemplate.txt · Last modified: 2024/05/21 03:26 by 18.117.94.20

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