linux

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Graphite

# connect to JVM
https://github.com/jmxtrans/jmxtrans

# run as docker container
docker run -d --name graphite -p 8080:80 -p 2003:2003 sitespeedio/graphite
user: guest
pass: guest

# Links
http://graphiteapp.org/

OpenShift

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

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

nmcli con add con-name MY-WIFI ifname wlan0 type wifi ssid MY-WIFI
nmcli con modify MY-WIFI wifi-sec.key-mgmt wpa-psk
nmcli con modify MY-WIFI wifi-sec.psk 'pass1234'

Autostart delayed VPN connection
# /home/foo/.config/autostart/vpn.desktop
[Desktop Entry]
Type=Application
Exec=nmcli con up VPN1
Hidden=false
NoDisplay=false
X-GNOME-Autostart-Delay=3

ip

ip addr show eth0

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

ip addr add 192.168.1.33/24 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

# show routing table
ip route

# shut down interface
ip link set eth0 down

ip route add default via 192.168.1.254

ip link set dev eth0 mtu 1400

# route
#dep# sudo route add -net 192.168.254.0 gw 192.168.1.34 netmask 255.255.255.0 dev tap0
sudo brctl addbr br10
sudo ip link set dev br10 up

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
DEV=/dev/sdb
wget ${URL} -q -O - | gunzip | sudo dd of=${DEV}

# 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://www.loveroms.com/
http://html5gamepad.com/ - HTML5 Gamepad Tester

Rundeck (Job scheduler and Runbook automation)

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/

# 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

# 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
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

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

Change default admin password
# http://rundeck.org/2.3.2/administration/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
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

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

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