Chucks notes and stuff

User Tools

Site Tools

Trace:
debian:upgradepathtemplate

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
debian:upgradepathtemplate [2024/04/17 19:38]
51.174.65.41 old revision restored (2022/11/13 22:43) 		debian:upgradepathtemplate [2024/04/30 16:41]
135.181.212.177 old revision restored (2022/11/15 12:43)
Line 4: Line 4:
  
 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 + 
-1.3. Prepare for downtime on services +==== 1.2. Inform users in advance ==== 
-            Set maintainance window for upgrade with buffer + 
-1.4. Prepare for recovery +==== 1.3. Prepare for downtime on services ==== 
-            Verify the recoverability of system from backup image + 
-1.5. Prepare a safe environment for the upgrade + Set maintainance window for upgrade with buffer 
-            Local terminal or SSH access + 
-1.6. Develop tests for section 3.3 that will ensure correct execution of needed tasks +==== 1.4. Prepare for recovery ==== 
-            i.e.: + 
-                a. Web server delivers correctly + Verify the recoverability of system from backup image 
-                b. php scripts execute correctly + 
-                c. DB runs correctly +==== 1.5. Prepare a safe environment for the upgrade ==== 
-                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 
  
   find NON-Pure Debian packages   find NON-Pure Debian packages
Line 30: Line 46:
     # apt-forktracer | sort     # apt-forktracer | sort
  
-2.1. Review actions pending in package manager +==== 2.1. Review actions pending in package manager ====
-            # aptitude +
-            Select GO and review +
-2.2. Disabling APT pinning +
-            check /etc/apt/preferences & /etc/apt/preferences.d/ for entries +
-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 +    # aptitude 
-2.4. Remove proposed-updates section if present in /etc/apt/sources.list +  Select GO and review 
-2.5. Verify Unofficial sources are available for target Debian version+ 
 +==== 2.2. Disabling APT pinning ==== 
 + 
 + check /etc/apt/preferences & /etc/apt/preferences.d/ for entries 
 + 
 +==== 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 ==== 
 + 
 + 
 +===== 3. Upgrading current version =====
  
-3. Upgrading current version 
  
 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 
  
 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.d/*+  # 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/* 
 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 
  
-5. Upgrading packages+ Only required for special 3rd party delivered software 
 + 
 +===== 5. Upgrading packages ===== 
  
     Ensure all partition mountpoints are mounted read-write     Ensure all partition mountpoints are mounted read-write
Line 89: Line 122:
             See 3.3 above             See 3.3 above
  
-6. Possible issues during upgrade+===== 6. Possible issues during upgrade ===== 
  
 6.1. Dist-upgrade fails with “Could not perform immediate configuration” 6.1. Dist-upgrade fails with “Could not perform immediate configuration”
Line 110: Line 144:
             Ctrl+Alt+F1 should recover the terminal window             Ctrl+Alt+F1 should recover the terminal window
  
-7. Upgrading kernel and related packages+===== 7. Upgrading kernel and related packages ===== 
  
 7.1. Install any needed kernel metapackage 7.1. Install any needed kernel metapackage
Line 120: Line 155:
                 # apt-cache show linux-image-amd64                 # apt-cache show linux-image-amd64
  
-8. Preparing for the next release+===== 8. Preparing for the next release ===== 
  
 8.1. Purging removed packages 8.1. Purging removed packages
Line 132: Line 168:
                 # aptitude purge '~c'                 # aptitude purge '~c'
  
-9. Obsolete packages+===== 9. Obsolete packages ===== 
  
 9.1. Dummy packages 9.1. Dummy packages
debian/upgradepathtemplate.txt · Last modified: 2024/05/21 05:10 by 3.142.53.216

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
CC Attribution-Noncommercial-Share Alike 4.0 International Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki