What Happens if I Install Jessie Again Will Overwrite
In that location is a new version of this tutorial bachelor for Debian 10 (Buster).
How to upgrade Debian Wheezy to Jessie safely
This tutorial explains the upgrade procedure to upgrade Debian from Wheezy to Jessie in a few elementary steps.
Earlier you get-go with the upgrade, backup all critical information. Thats particularly the config data in the /etc directory and the user information in /dwelling. When y'all run a server and then you lot should include the databases (MySQL, Postgresql, etc), spider web and email data in the fill-in likewise. The backup should be stored on a external harddisk, on an external server eastward.g. by FTP or on a cloud drive. Here are a few examples on how to create backups with tar.
Backup the configuration and data
Configuration files in the /etc directory.
tar -pczf etc.tar.gz /etc
Backup of the /var/www website directory.
tar -pczf www.tar.gz /var/www Backup of the /dwelling house directories.
tar -pczf home.tar.gz /dwelling For ISPConfig three users: Fill-in of your e-mail server files.
tar -pczf vmail.tar.gz /var/vmail Backup MySQL databases
mysqldump --defaults-file=/etc/mysql/debian.cnf -cCeQ --hex-hulk --quote-names --routines --events --triggers --all-databases -r all_databases.sql
Then move the tar.gz and .sql files for safe storage on a backup drive.
Check the apt sources.list file
We will install all available Wheezy updates first before nosotros upgrade to Jessie. On some systems the package source is defined as "stable" in the sources.list file instead of "wheezy" or "jessie". To avoid an accidential early upgrade to Jessie, please check the sources.listing now and ensure that it contains "wheezy" and not "stable" as source:
Apply a commandline editor like nano or half-dozen to open/etc/apt/sources.list, the lines should be similar to the ones below:
nano /etc/apt/sources.list
deb http://ftp.de.debian.org/debian wheezy main contrib non-free
deb-src http://ftp.de.debian.org/debian wheezy principal contrib not-free
deb http://ftp.de.debian.org/debian wheezy-updates main contrib not-gratis
deb http://ftp.de.debian.org/debian-security wheezy/updates primary contrib non-complimentary
Your country code is almost likely not "de", you lot should use the code of your country hither. Using your land code in the file will speed up the package download.
Update the packages for Wheezy
The post-obit commands volition install all pending Wheezy updates. This ensures that your system is in a adept shape for the update to Jessie.
apt-go update
Prepare for offset upgrade:
apt-go upgrade
Follow this with:
apt-go dist-upgrade
Cheque the package land to ensure that no packages are on hold or in half installed land
This test is of import, we will check the package state to ensure that no packages are on concur or in half installed state. Your system and apt database must be in a good shape before we proceed with the dist upgrade. If in that location are whatsoever broken or "on concord" packages, then fix these issues earlier the upgrade.
Check that no packages are on hold by querying the package database with the dpkg control:
dpkg --audit
dpkg --get-selections | grep agree
When both commands did not return any packages, so proceed with the upgrade.
Update the sources.list for Jessie
Edit the /etc/apt/sources.list file once again:
nano /etc/apt/sources.list
and replace its content with the following lines:
deb http://ftp.de.debian.org/debian/ jessie primary contrib not-free
deb-src http://ftp.de.debian.org/debian/ jessie main contrib not-gratuitousdeb http://httpredir.debian.org/debian jessie-updates chief contrib not-costless deb-src http://httpredir.debian.org/debian jessie-updates main contrib non-free
deb http://security.debian.org/ jessie/updates main contrib non-free
deb-src http://security.debian.org/ jessie/updates main contrib non-free
Choose your nearest locale by replacing "de" with e.g. "u.s.a." or your country code. And then save the file and run the following command to update the sources database:
apt-get update
Jessie Upgrade in two steps
It is recommended to do the upgrade in two steps, commencement run "apt-become upgrade" to install the base packages and then run "apt-become dist-upgrade" to do the actual distribution upgrade,
Starting time with the update by running this command:
apt-go upgrade
Next we volition do the distribution upgrade by running:
apt-get dist-upgrade
A reboot is required to terminate the upgrade and load the new kernel:
reboot
Check the update
To check which Debian version is currently installed on the system, accept a look at the file /etc/bone-release.
cat /etc/os-release
The outcome on an Debian Jessie organization is:
Links
- Debian: http://www.debian.org/
Suggested manufactures
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Source: https://www.howtoforge.com/tutorial/how-to-upgrade-debian-wheezy-to-jessie-stable-release/