some basic commands for branches. you can read Branch Basics and Branch Management for more details
you wanna develope a feature, fix a bug, test some stuff … you need a branch !
git checkout -b feature1
if you have a central repo, push the feature upstream (so others can checkout as well)
git push --set-upstream origin feature1
you may have multiple branches, list them all. and update pager so list will not open in VIM !
i just like this Page … Faces of OpenSource.
Thanks for all the fish, guys !
sha256: 511dfaf2c20685d4fb80884557bf2efaf1ac7f234d02d25be20687d92cb6ad11
let’s assume you already have a running version of checkmk. You should install patches / updated every few month.
Main URL: https://checkmk.com/de/download?edition=cre&version=stable&dist=debian&os=bullseye
https://download.checkmk.com/checkmk/1.6.0p20/check-mk-raw-1.6.0p20_0.bullseye_amd64.deb
https://download.checkmk.com/checkmk/2.0.0p12/check-mk-raw-2.0.0p12_0.bullseye_amd64.deb
Login as Root
v="2.0.0p25"
cd /tmp
wget -O checkmk.deb "https://download.checkmk.com/checkmk/${v}/check-mk-raw-${v}_0.bullseye_amd64.deb"
gdebi checkmk.deb
Switch User …
su - mysite
.. Switch User and start Update
omd status
omd version
omd stop
omd update
omd start
exit
omd cleanup
Open Browser, check News and Plugins
Need a small and smart utility to manage you ssh keys under linux ? got some scripts and cronjobs which requires an local ssh key ? have a look at keychain !
depending on your OS …
macos$ brew install keychain
debian$ sudo apt-get install keychain
openbsd$ pkg_add keychain
freebsd$ pkg install keychain
$HOME/.bashrc $HOME/.bash_profile /etc/profile $HOME/.profile
cat << 'EOF' >> $HOME/.bashrc
# Keychain Startup
eval `keychain --eval id_ed25519`
EOF
$ keychain
$ ssh-add -L
cat << 'EOF' >> .profile
# Keychain Loaded ? Load and show Key ...
eval $(keychain --eval id_ed25519)
echo -e "loaded keys: `ssh-add -L |cut -c 1-12,77-`\n"
EOF
keychain --list
$ keychain --list-fp
Timeout for SSH Agent
have you ever checked in some binarys, confidential stuff or something else by mistake ? Git will keep all your history, that’s their design and purpose.
how ever, if you need to cleanup once, here is a short tutorial.
cd myrepo
cat .git/config -> note down the url
url=$(git config --get remote.origin.url)
rm -rf .git
git init
git add .
git commit -m "Removed history, ..."
git remote add origin git@host/yourrepo <- URL you noted down above
git remote add origin $url
git push -u --force origin master
_url=$(git remote -v |awk '/fetch/ { print $2 }')
rm -rf .git
git init
git add .
git commit -m "Removed history ..."
git remote add origin ${_url}
git push -u --force origin main
unset _url
and you’re done :)
https://checkmk.de/cms_install_packages_debian.html
download and scp check-mk-enterprise-1.6.0p15.demo_0.buster_amd64.deb -> enterprise microkernel, 2 x 10 Hosts download and scp check-mk-raw-1.6.0p15_0.buster_amd64.deb -> raw edition, nagios kernel
ssh root@localhost
apt-get install dpkg-sig libnet-snmp-perl snmp
wget https://checkmk.com/support/Check_MK-pubkey.gpg
gpg --import Check_MK-pubkey.gpg
dpkg-sig --verify /tmp/check-mk-enterprise-1.6.0p15.demo_0.buster_amd64.deb
apt-get install gdebi-core
gdebi /tmp/check-mk-raw-1.6.0p15_0.buster_amd64.deb
omd version
omd create mysite
omd config
oder
omd restore /tmp/mysite.tar.gz
https://checkmk.de/cms_install_packages_debian.html
download file: check-mk-raw-2.0.0p5_0.buster_amd64.deb
scp check-mk-raw-2.0.0p5_0.buster_amd64.deb host227:/tmp/
apt install -y dpkg-sig libnet-snmp-perl snmp
wget https://checkmk.com/support/Check_MK-pubkey.gpg
gpg --import Check_MK-pubkey.gpg
dpkg-sig --verify /tmp/check-mk-raw-2.0.0p5_0.buster_amd64.deb
apt-get install gdebi-core
gdebi /tmp/check-mk-raw-2.0.0p5_0.buster_amd64.deb
omd version
Backup and copy to new Server
wanna switch a local folder to a remote git repo ?
https://docs.github.com/en/github/using-git/adding-a-remote
create git repo with gitolite (myproject)
cd myproject
git init
git remote add origin git@your-git-server:myproject
git remote -v
git status
git add .
git commit -m "initial commit"
git push --set-upstream origin master
sha256: ba5ff311face100add7e9b21efbbb86af94545d3aec2cf8d920ea55ba5353464
boot
menu -> tab
-> debian-installer/i386/linux vga=788 initrd=debian-installer/i386/initrd.gz — console=ttyS0,115200
enter
space
:)
english
country switzerland
nic0
hostname apu005
domain planet
mirror ch -> ftp.ch.debian.org
root password
Partitioning: entire Disk & LVM
Separate /home /var /tmp
survey no
soft: standard system utilities & ssh server
grub yes
braucht ca. 30min !
https://www.debian.org/releases/stable/amd64/apbs02.en.html https://www.debian.org/releases/buster/example-preseed.txt
apt-get -y install net-tools git htop
geht 40 Sekunden
sha256: de990ff6c33196dbecc6d133f0fc29686ded54fa7357d30e7dc36a59f0368eb0
add this line to root’s crontab
* * * * * env > /root/cronenv
env - $(cat /root/cronenv) /bin/sh
./script_with_env_problems.sh
and check it’s output …
sha256: de1667fb4003135420244f48280d72e03d7559b675ab6b4a9c020b0725866525
host ubuntu {
hardware ethernet 4E:E5:80:xx:xx:xx;
fixed-address x.x.x.x;
filename "ubuntu/pxelinux.0";
next-server x.x.x.200;
}
restart dhcpd
mkdir -p /tftpboot/ubuntu/
cd /tftpboot/ubuntu/
ftp http://archive.ubuntu.com/ubuntu/dists/bionic-updates/main/installer-amd64/current/images/netboot/netboot.tar.gz
tar xfz netboot.tar.gz
put the following file in a webroot available from the client machine
cat <<'EOF' > /var/www/htdocs/ks.cfg
#Generated by Kickstart Configurator
#platform=AMD64 or Intel EM64T
#System language
lang en_US
#Language modules to install
langsupport en_US
#System keyboard
keyboard ch
#System mouse
mouse
#System timezone
timezone Europe/Zurich
#Root password (here 123456)
rootpw --iscrypted $1$r6te7M.4$C55eKRGO2xdodwc3tBe48/
#Initial user
user --disabled
#Reboot after installation
reboot
#Use text mode install
text
#Install OS instead of upgrade
install
#Use Web installation
url --url http://mirror.init7.net/ubuntu/
#System bootloader configuration
bootloader --location=mbr
#Clear the Master Boot Record
zerombr yes
#Partition clearing information
clearpart --all --initlabel
#Disk partitioning information
part swap --size 1024
part /boot --fstype ext4 --size 512
part / --fstype ext4 --size 1 --grow
#System authorization infomation
auth --useshadow --enablemd5
#Network information
network --bootproto=dhcp --device=eth0
#Firewall configuration
firewall --disabled
#Do not configure the X Window System
skipx
EOF
sha256: c58f8a064ddcae5b682a1699da8d10b3abb12ce131826e2a6098ed9b930f4e10