| View previous topic :: View next topic |
| Author |
Message |
C5ace
Guru
Joined: 23 Dec 2013
Posts: 472
Location: Brisbane, Australia
|
 Posted: Thu Feb 02, 2023 3:41 am Post subject: Production and Testing and backup on same PC |
 |
|
I have 2 copies of Gentoo on my desktop pc. One production copy on a RAID 5 array and one testing/development copy on a single drive. The testing copy is updated each time I update the production copy. Kernel upgrades are done manually with "genkernel all". The production copy boots automatically on power on. The testing copy boots when selected from BIOS. Partitions and are MBR. File system are EXT4. Bootloaders are Grub2. Hard drives installed are 2TB each.
The main purpose of the testing copy is to test changed configuration and applications.
To update the testing copy from the production copy I run "PT" shell script. To update the production copy from the testing copy I run TP shell script.
PT shell script /opt/bin/PD
| Code: | #!/bin/sh
echo "P_to_T"
time /usr/bin/rsync -c -r -t -p -o -g -x -v --progress --delete -l -H -D -i -s --exclude=/boot/grub/* --exclude=/dev/* --exclude=/etc/default/grub --exclude=/etc/fstab --exclude=/etc/genkernel.conf --exclude=/home/* --include=/media/.keep --exclude=/media/* --include=/proc/.keep --exclude=/proc/* --include=/run/.keep --exclude=/run/* --include=/sys/.keep --exclude=/sys/* --include=/tmp/.keep --exclude=/tmp/* --include=/var/tmp/.keep --exclude=/var/tmp/* --exclude=/root/.cache/* --include=/var/cache/.keep --exclude=/var/cache/distfiles/* --include=/var/cache/distfiles/.keep --exclude=/var/db/repos/gentoo/* --exclude=/var/db/repos/localrepo/* --exclude=/mnt/* --exclude=/VirtualBox/* --exclude=/T_ROOT --exclude=/P_ROOT --exclude=/boot/T_BOOT --exclude=/boot/P_BOOT --exclude=/home/T_HOME --exclude=/home/P_HOME --exclude=/VirtualBox/T_VBOX --exclude=/VirtualBox/P_VBOX / /mnt/d_root/ | tee /var/log/P_ROOT_to_T_ROOT.log
time /usr/bin/rsync -c -r -t -p -o -g -x -v --progress --delete -l -H -D -i -s --exclude=/boot/ --exclude=/T_HOME --exclude=/P_HOME /home/ /mnt/t_root/home/ | tee /var/log /J_HOME_to_D_HOME.log |
Production fstab (/etc/fstab)
| Code: | # <fs> <mountpoint> <type> <opts> <dump/pass>
LABEL=J_BOOT /boot ext4 defaults 0 2
LABEL=J_ROOT / ext4 defaults 0 1
LABEL=J_SWAP none swap sw 0 0
LABEL=J_HOME /home ext4 defaults 0 2
LABEL=J_VBOX /VirtualBox ext4 defaults 0 2
LABEL=T_ROOT /mnt/t_root ext4 defaults 0 2
LABEL=T_BOOT /mnt/t_root/boot ext4 defaults 0 2
LABEL=T_HOME /mnt/t_root/home ext4 defaults 0 2
LABEL=T_VBOX /mnt/t_root/VirtualBox ext4 defaults 0 2
192.168.0.105:/repos /var/db/repos/ nfs rw,_netdev 0 0
192.168.0.105:/distfiles /var/cache/distfiles nfs rw,_netdev 0 0
|
Production genkernel.conf (/etc/genkernel.conf)
| Code: | .
.
.
# =========MISC BOOT CONFIGURATION============
#
# Specify a default for real_root=
#REAL_ROOT="/dev/one/two/gentoo"
MENUCONFIG="yes"
# CLEAN="no"
# MRPROPER="no"
MAKEOPTS="-j32"
MDADM="yes"
MDADM_CONFIG="/etc/mdadm.conf"
DISKLABEL="yes"
KERNEL_FILENAME="vmlinuz-%%KV%%-P_ROOT"
INITRAMFS_FILENAME="initramfs-%%KV%%-P_ROOT.img"
|
Production grub (/etc/default/grub)
| Code: | .
.
.
GRUB_DISTRIBUTOR="P_Gentoo"
# Default menu entry
#GRUB_DEFAULT=0
# Boot the default entry this many seconds after the menu is displayed
GRUB_TIMEOUT=15
#GRUB_TIMEOUT_STYLE=menu
# Append parameters to the linux kernel command line
GRUB_CMDLINE_LINUX="root=/dev/ram0 domdadm rootfstype=ext4 real_root=LABEL=P_ROOT scandelay=5 ro net.ifnames=0 delayacct"
#
# Examples:
.
.
. |
From Testing to Production
TP shell script /opt/bin/TP
| Code: | #!/bin/sh
echo "T_to_P"
time /usr/bin/rsync -c -r -t -p -o -g -x -v --progress --delete -l -H -D -i -s --exclude=/boot/grub/* --exclude=/dev/* --exclude=/etc/default/grub --exclude=/etc/fstab --exclude=/etc/genkernel.conf --exclude=/home/* --include=/media/.keep --exclude=/media/* --include=/proc/.keep --exclude=/proc/* --include=/run/.keep --exclude=/run/* --include=/sys/.keep --exclude=/sys/* --include=/tmp/.keep --exclude=/tmp/* --include=/var/tmp/.keep --exclude=/var/tmp/* --exclude=/root/.cache/* --include=/var/cache/.keep --exclude=/var/cache/distfiles/* --include=/var/cache/distfiles/.keep --exclude=/var/db/repos/gentoo/* --exclude=/var/db/repos/localrepo/* --exclude=/mnt/* --exclude=/VirtualBox/* --exclude=/P_ROOT --exclude=/P_ROOT --exclude=/boot/P_BOOT --exclude=/boot/T_BOOT --exclude=/home/P_HOME --exclude=/home/T_HOME --exclude=/VirtualBox/P_VBOX --exclude=/VirtualBox/T_VBOX / /mnt/p_root/ | tee /var/log/T_ROOT_to_P_ROOT.log
time /usr/bin/rsync -c -r -t -p -o -g -x -v --progress --delete -l -H -D -i -s --exclude=/boot/ --exclude=/P_HOME --exclude=/T_HOME /home/ /mnt/p_root/home/ | tee /var/log /T_HOME_to_P_HOME.log |
Testing fstab (/etc/fstab)
| Code: | #
#<fs> <mountpoint> <type> <opts> <dump/pass>
LABEL=T_BOOT /boot ext4 defaults 0 2
LABEL=T_ROOT / ext4 defaults 0 2
LABEL=T_HOME /home ext4 defaults 0 2
LABEL=T_VBOX /VirtualBox ext4 defaults 0 2
LABEL=T_SWAP none swap sw 0 0
/dev/cdrom /mnt/cdrom auto noauto,ro 0 0
LABEL=P_ROOT /mnt/j_root ext4 defaults 0 2
LABEL=P_BOOT /mnt/j_root/boot ext4 defaults 0 2
LABEL=P_HOME /mnt/j_root/home ext4 defaults 0 2
LABEL=P_VBOX /mnt/j_root/VirtualBox ext4 defaults 0 2
192.168.0.105:/repos /var/db/repos/ nfs rw,_netdev 0 0
192.168.0.105:/distfiles /var/cache/distfiles nfs rw,_netdev 0 0
|
Testing genkernel.conf (/etc/genkernel.conf)
| Code: | .
.
.
# =========MISC BOOT CONFIGURATION============
#
# Specify a default for real_root=
#REAL_ROOT="/dev/one/two/gentoo"
MENUCONFIG="yes"
CLEAN="no"
#MRPROPER="no"
MAKEOPTS="-j32"
MDADM="yes"
MDADM_CONFIG="/etc/mdadm.conf"
DISKLABEL="yes"
KERNEL_FILENAME="vmlinuz-%%KV%%-T_ROOT"
INITRAMFS_FILENAME="initramfs-%%KV%%-T_ROOT.img"
|
Testing grub (/etc/default/grub)
| Code: | .
.
.
GRUB_DISTRIBUTOR="T_Gentoo"
# Default menu entry
#GRUB_DEFAULT=0
# Boot the default entry this many seconds after the menu is displayed
GRUB_TIMEOUT=15
#GRUB_TIMEOUT_STYLE=menu
# Append parameters to the linux kernel command line
GRUB_CMDLINE_LINUX="root=/dev/ram0 domdadm rootfstype=ext4 real_root=LABEL=T_ROOT scandelay=5 ro net.ifnames=0 delayacct"
#
# Examples:
.
.
. |
Warning! There may be typos and transcription errors.
To speed up transfers delete the "-c" option from the rsync commands.
_________________
Observation after 30 years working with computers:
All software has known and unknown bugs and vulnerabilities. Especially software written in complex, unstable and object oriented languages such as perl, python, C++, C#, Rust and the likes. |
|
| Back to top |
|
 |
psycho
Guru
Joined: 22 Jun 2007
Posts: 534
Location: New Zealand
|
| Posted: Wed Feb 22, 2023 9:56 am Post subject: |
|
|
Hi C5ace.
I do things similarly, never updating systems in use, instead keeping testing systems slightly ahead of them, only copying the updates over once they've been tested systematically and everything important is demonstrably working properly. It takes a bit more effort (mostly in the form of the testing, some of which I haven't got around to automating, and some of which can't really be automated), but has completely eliminated nasty surprises when things need to work... so far at least. Ironically it means that my production systems often wind up being the ones on which I test new software (rather than updates), in the nothing-matters-now time just before copying a tested updated system over them. |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
Other Things Gentoo
