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--- debian:upgradepathtemplate [2026/04/07 09:18] – old revision restored (2025/05/28 07:31) 114.119.138.239
+++ debian:upgradepathtemplate [2026/05/23 00:35] (current) – old revision restored (2024/03/01 06:38) 113.44.101.108
@@ 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.
-Debian Release upgrade paths:
-  Jessie -> Buster -> Bullseye
-  Stretch -> Buster -> Bullseye
-  Buster -> Bullseye
 ===== 1. Preparing for the upgrade =====
@@ Line 20: / Line 14: @@
 ==== 1.3. Prepare for downtime on services ====
- Set maintainance window for upgrade with buffer
+            Set maintainance window for upgrade with buffer
 ==== 1.4. Prepare for recovery ====
- Verify the recoverability of system from backup image
+            Verify the recoverability of system from backup image
 ==== 1.5. Prepare a safe environment for the upgrade ====
- Local terminal or SSH access
+            Local terminal or SSH access
 ==== 1.6. Develop tests for section 3.3 that will ensure correct execution of needed tasks ====
- i.e.:
+            i.e.:
-  a. Web server delivers correctly
+                a. Web server delivers correctly
-  b. php scripts execute correctly
+                b. php scripts execute correctly
-  c. DB runs correctly
+                c. DB runs correctly
-  d. mail works
+                d. mail works
 ===== 2. Checking system status =====
@@ Line 48: / Line 39: @@
 ==== 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
+            check /etc/apt/preferences & /etc/apt/preferences.d/ for entries
 ==== 2.3. Checking packages status ====
-  # dpkg --audit
+            # dpkg --audit
-  # aptitude search "~ahold"
+            # aptitude search "~ahold"
-  # dpkg --get-selections | grep 'hold$'
+            # dpkg --get-selections | grep 'hold$'
- To remove a hold on a package:
-  echo package_name install | dpkg --set-selections
+         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 ====
@@ Line 73: / Line 60: @@
 .1. Update current installation
-  # sudo apt update
+            # sudo apt update
 .2. Upgrade current installation
-  # sudo apt upgrade
+            # sudo apt upgrade
 .3. Check functionality
- Verify all services required of current host is functioning correctly
+            Verify all services required of current host is functioning correctly
 .4. Upgrade current distribution
-  # sudo apt dist-upgrade
+            # sudo apt dist-upgrade
 .5. Check functionality
- see 3.3 above
+            see 3.3 above
 ===== 4. Preparing sources for APT =====
@@ Line 87: / Line 74: @@
 .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/*
 .2. Adding APT sources for a local mirror
- Only required for special in-house software
+            Only required for special in-house software
 .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 =====