linux

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OpenShift

# OpenShift on OpenStack
https://docs.openshift.com/container-platform/3.11/install_config/configuring_openstack.html

apt-get install docker-engine=1.13.1-0~ubuntu-xenial

wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/installit/master/install.openshift.sh -O - | bash -

#!/bin/bash

. /etc/os-release
if [ "${ID_LIKE}" == "debian" ]; then
    wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/installit/master/install.docker.sh -O - | bash -
    sudo apt-get install git wget
    sudo sed -i 's|ExecStart=/usr/bin/dockerd -H fd://|ExecStart=/usr/bin/dockerd -H fd:// --insecure-registry 172.30.0.0/16|g' /etc/systemd/system/multi-user.target.wants/docker.service
    systemctl daemon-reload
else
    yum install -y docker git wget
    sudo sed -i "s|# INSECURE_REGISTRY='--insecure-registry'|INSECURE_REGISTRY='--insecure-registry 172.30.0.0/16'|g" /etc/sysconfig/docker
fi

systemctl enable docker
systemctl start docker

wget https://github.com/openshift/origin/releases/download/v1.5.0-rc.0/openshift-origin-client-tools-v1.5.0-rc.0-49a4a7a-linux-64bit.tar.gz -qO /tmp/openshift-origin-client-tools-linux-64bit.tar.gz 
tar xzf /tmp/openshift-origin-client-tools-linux-64bit.tar.gz -C /tmp/
cp /tmp/openshift-origin-client-tools-*/oc /usr/local/bin/

rm -rf /tmp/openshift-origin-client-tools*

# create test project
oc cluster up #--public-hostname=openshift.example.com --loglevel=10
oc login -u developer -p developer
oc whoami
oc new-app -L
oc projects
oc new-app openshift/ruby-20-centos7~https://github.com/openshift/ruby-ex
oc get all
oc get pod -w
oc logs -f ruby-ex-1-build
oc get services
oc expose service ruby-ex #--hostname=app1.example.com
oc get route

echo "192.168.178.31 ruby-ex-myproject.192.168.178.31.xip.io" >> /etc/hosts

Manage OpenShift with Ansible
https://github.com/openshift/openshift-ansible
https://www.ansible.com/blog/2013/09/19/deploying-highly-available-openshift-origin-clusters

# Ansible playbook
https://github.com/panticz/ansible/tree/master/roles/ansible

Links
https://www.openshift.org/
https://github.com/openshift/origin/blob/master/docs/cluster_up_down.md#linux
https://github.com/openshift/origin/releases/latest
https://github.com/OpenShiftDemos/openshift-cd-demo

rsync under OpenElec / Kodi

mkdir /tmp/deb
wget http://ftp.us.debian.org/debian/pool/main/r/rsync/rsync_3.1.1-3_armhf.deb -qP /tmp/
wget http://ftp.us.debian.org/debian/pool/main/a/attr/libattr1_2.4.47-2_armhf.deb -qP /tmp/
wget http://ftp.us.debian.org/debian/pool/main/a/acl/libacl1_2.2.52-2_armhf.deb -qP /tmp/
wget http://ftp.us.debian.org/debian/pool/main/p/popt/libpopt0_1.16-10_armhf.deb -qP /tmp/
dpkg -x /tmp/rsync_3.1.1-3_armhf.deb /tmp/deb
dpkg -x /tmp/libattr1_2.4.47-2_armhf.deb /tmp/deb
dpkg -x /tmp/libacl1_2.2.52-2_armhf.deb /tmp/deb
dpkg -x /tmp/libpopt0_1.16-10_armhf.deb /tmp/deb

cryptsetup luks

sudo cryptsetup luksChangeKey /dev/sda5
sudo cryptsetup luksDump /dev/sda5
https://ubuntuforums.org/showthread.php?t=837416

# change device label
sudo e2label /dev/mapper/luks-fbf84040-3193-4f4b-123456-48af9e123456 backup_disk_1

nmcli - NetworkManager command line tool

# list all connections
nmcli con

# show connection details
nmcli con show 'MY_CONNECTION_1'

# start vpn from command line (ubuntu)
nmcli con up id VPN_NAME

nmcli dev wifi list

# modify configuration
SSID="FRITZ!Box 5960"
PASS=00011090700208423311

nmcli con add con-name "${SSID}" ifname wlan0 type wifi ssid "${SSID}"
nmcli con modify "${SSID}" wifi-sec.key-mgmt wpa-psk
nmcli con modify "${SSID}" wifi-sec.psk "${PASS}"

nmcli con up "${SSID}"

Autostart delayed VPN connection
# /home/foo/.config/autostart/vpn.desktop
[Desktop Entry]

ip

bridges - http://panticz.de/brctl

ip addr show eth0
ip route show default 0.0.0.0/0

ip -d link show eth0.8
ip link show eno1

ip link set eth0 up
ip link set dev up
ip link set dev down

# remove bridge
ip link set dev br10 down
brctl delbr br10

# delete interface
ip link delete br0

ip link del docker0

ip addr add 192.168.1.33/24 dev eth0
ip addr add 192.168.0.111/24 dev eth0:1

# remove ip
ip addr del 10.22.30.44/16 dev eth0
ip addr flush dev eth0

ip addr del 10.0.0.2/24 dev tun2
ip link set tun0 down

ip -4 route get 8.8.8.8

Lakka (Retro game emulation distribution)

# download and create installation usb disc
#URL=http://mirror.lakka.tv/nightly/Generic.x86_64/Lakka-Generic.x86_64-devel-20161221183017-r21729-g274b40f.img.gz
URL=http://le.builds.lakka.tv/Generic.i386/Lakka-Generic.i386-2.2.img.gz
DEV=/dev/sdb
wget ${URL} -q -O - | gunzip | sudo dd of=${DEV}

# fix slow menu
Second Icon > Menu > Menu Shader Pipeline > Off

# gamepad
http://www.lakka.tv/doc/Input-settings/
http://www.lakka.tv/doc/Contributing-your-joypad-config/

# links
http://www.lakka.tv/get/linux/generic/
https://emulator.games/roms/
https://www.loveroms.com/

Rundeck (Job scheduler and Runbook automation)

http://rundeck.org/3.0.x-SNAPSHOT/administration/install/ubuntudebian.html

ansible-playbook rundeck-ansible.example.com.yml -i your_inventory

---
hosts: rundeck-ansible.example.com
  vars:
    port_redirect:
      from: 4440
      to: 80
    install_ansible_plugin: true
  roles:
    - ansible
    - rundeck

Ansible role
https://github.com/panticz/ansible/tree/master/roles/rundeck
https://github.com/panticz/ansible/blob/master/rundeck.example.com.yml

# install
wget http://dl.bintray.com/rundeck/rundeck-deb/rundeck-2.7.1-1-GA.deb -P /tmp
sudo dpkg -i /tmp/rundeck-2.7.1-1-GA.deb
sudo /etc/init.d/rundeckd start

# Rundeck CLI
sudo apt-get install rundeck-cli
https://rundeck.github.io/rundeck-cli/
https://github.com/rundeck/rundeck-cli/issues/62

# Admin
http://localhost:4440/user/login;jsessionid=16lnsilhg9n6x38a090agwe8y
admin/admin

Configuration
# (global)
/etc/rundeck/framework.properties

# job database
/var/lib/rundeck/data/rundeckdb.mv.db

# hosts
/var/rundeck/projects/JOB_NAME/etc/resources.xml

# add user
echo "foo:bar,user,devops" >> /etc/rundeck/realm.properties

# acl
/var/rundeck/projects//acls/.aclpolicy

Configuration (project)
# configure nodes
/var/rundeck/projects//etc/resources.xml

# use native ssh agent to access host behind proxy / bastion
/var/rundeck/projects//etc/project.properties
plugin.script-exec.default.command=/usr/bin/ssh ${node.username}@${node.hostname} ${exec.command}
plugin.script-copy.default.command=/usr/bin/scp ${file-copy.file} ${node.username}@${node.hostname}\:${file-copy.destination}

Email notification
http://rundeck.org/docs/administration/email-settings.html

# /etc/rundeck/rundeck-config.properties
grails.mail.host=smtp.example.com
grails.mail.port=25
grails.mail.username=foo
grails.mail.password=bar

# restart service
service rundeckd restart

# ssh
mkdir /var/lib/rundeck/.ssh
chown rundeck:rundeck /var/lib/rundeck/.ssh
chmod 700 /var/lib/rundeck/.ssh
touch /var/lib/rundeck/.ssh/id_rsa
chown rundeck:rundeck /var/lib/rundeck/.ssh/id_rsa
chmod 600 /var/lib/rundeck/.ssh/id_rsa

# log
tail -f /var/log/rundeck/*.log

# Documentation
http://rundeck.org/
http://rundeck.org/docs/manual/getting-started.html
http://rundeck.org/2.3.2/administration/configuring-ssl.html

Plugins
https://www.rundeck.com/integrations/plugins
http://rundeck.org/plugins/ansible/2016/03/11/ansible-plugin.html
http://rundeck.org/plugins/2013/01/01/jenkins-rundeck.html
http://rundeck.org/plugins/2013/01/01/aws-ec2-nodes.html

# scm
https://docs.rundeck.com/docs/developer/scm-plugins.html
/var/rundeck/projects/PROJECT_NAME/scm

Docker
DockerHub images: https://hub.docker.com/r/rundeck/rundeck/

# Create container with shared SSH keys an forward GUI to localhost
sudo docker run --name rundeck -p 4440:4440 -v /home/${USER}/.ssh:/home/rundeck/.ssh rundeck/rundeck:SNAPSHOT

# Credentials
url: http://127.0.0.1:4440/
user: admin
pass: admin

https://github.com/x110dc/docker-rundeck

Change default admin password
https://docs.rundeck.com/docs/administration/security/authenticating-users.html
#RD_PASS=$(openssl rand -base64 16)
#echo ${RD_PASS}
#RD_PASS_MD5=$(java -cp /var/lib/rundeck/bootstrap/jetty-all-9.0.7.v20131107.jar org.eclipse.jetty.util.security.Password admin ${RD_PASS} 2>&1 | grep MD5)
#sed -i "s/^admin:admin/admin:MD5:${RD_PASS_MD5}/g" /etc/rundeck/realm.properties
java -jar /var/lib/rundeck/bootstrap/rundeck-*.war --encryptpwd Jetty
service rundeckd restart

# echo "framework.server.password = MD5:${RD_PASS_MD5}" >> /etc/rundeck/framework.properties

# Notify icinga
Local Command:
ssh monitoring.example.com '/usr/bin/printf "[%lu] SCHEDULE_FORCED_SVC_CHECK;%s;%s;%s\n" $(date +%s) ${node.name} APT $(date +%s) | tee -a /var/lib/icinga/rw/icinga.cmd'

# User authentification
http://rundeck.org/docs/administration/authenticating-users.html

Changelog
http://rundeck.org/docs/history/changelog.html

Rundeck jobs and scripts repository
https://github.com/panticz/rundeck

Job options
http://rundeck.org/2.0.0/manual/job-options.html
# use in bash
NODES=$(echo $RD_OPTION_NODES | sed 's/,/ /g')

# remote URL
https://docs.gitlab.com/ee/api/repository_files.html#get-file-from-repository
file:///tmp/foo.json
# dep # https://gitlab.example.com/foo/bar/raw/master/file.json?private_token=foo1234

https://gitlab.example.com/api/v4/projects/3/repository/files/${job.project}%2F${globals.environment}%2Foptions-hosts.json/raw?ref=master&private_token=${globals.private_token}

Pipe command
echo ${option.RSA} | tee /tmp/debug.txt

Commands
# check file size
'[[ $(find /media/backup/db.mr/ -size +50M -name exp_$(date -I)_*.dmp.bz2 ) ]]'

API call with parameter from curl
http://rundeck.org/docs/api/index.html
http://rundeck.org/docs/api/#running-a-job

curl -H "X-Rundeck-Auth-Token: ABCDEFGHIJKLMNOPRST1234567890" --data-urlencode "argString=-sku 'item1 item2 item3'" -X POST http://rundeck.example.com/api/25/job/26356713-8285-479e-860f-221559a64c23422/run

# fix Failed loading remote option values / Exception: java.lang.Exception: Unexpected content type received: text/plain; charset=utf-8 in Rundeck Allowed Values > Remote URL with currently:
# https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/23442
echo "framework.globals.environment=dev" >> /etc/rundeck/framework.properties

Output
# color
grep --color=always foo /path/to/file

job options
https://rundeck.org/docs/man5/resource-json.html
https://rundeck.org/docs/manual/defining-job-options.html
https://rundeck.org/2.8.2/administration/configuration-file-reference.html
https://rundeck.org/2.9.2/administration/gui-customization.html

Sonoff / ITEAD ESP8266

Flash ESPEasy with a FTDI adapter
sudo apt-get install -y unzip wget python-minimal python-serial
wget -q https://codeload.github.com/espressif/esptool/zip/master -qO /tmp/espressif.zip
unzip /tmp/espressif.zip -d /tmp

wget http://www.letscontrolit.com/downloads/ESPEasy_R147_RC8.zip -qO /tmp/ESPEasy_R147_RC8.zip
unzip /tmp/ESPEasy_R147_RC8.zip -d /tmp
/tmp/esptool-master/esptool.py --port /dev/ttyUSB0 write_flash --flash_mode dio --flash_size 1MB 0x0 /tmp/ESPEasy_R147_1024.bin

# Connect to temporary WiFi access point
SSID: ESP_0
pass: configesp

ZFS filesystem on Linux

Create ZFS filesystem
apt install -y zfsutils-linux
zpool create tank /dev/system/lxd
zfs create -o mountpoint=/var/lib/lxd2 tank/lxd

boot Ubuntu 16.04 LiveCD
terminal
sudo apt-get install -y ssh
sudo passwd ubuntu
ip a

SSH login to Ubuntu LiveCD
ssh ubuntu@

sudo su

sudo apt-add-repository universe
sudo apt update

apt install -y debootstrap zfs-initramfs

# rmove previous ZFS pool
zpool export rpool

DEVICES="
/dev/disk/by-id/ata-TOSHIBA_DT01ACA200_938457298
/dev/disk/by-id/ata-TOSHIBA_DT01ACA200_9D0JN9VR4

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