linux

warning: Creating default object from empty value in /data/web/1/000/027/003/273448/htdocs/panticz.de/modules/taxonomy/taxonomy.pages.inc on line 33.

LTSP Webcam

export LTSP_HANDLE_DAEMONS=false
ltsp-chroot -p -a amd64 /bin/bash
apt-get install -y guvcview
echo 'KERNEL=="video*", GROUP="video", MODE="0666"' > /etc/udev/rules.d/99-webcam.rules
ltsp-update-image

Links
https://wiki.ubuntuusers.de/LTSP/Lokale_Webcam_nutzen/

rsync

# on-the-fly backup (backup whole running system)
rsync -av --delete --numeric-ids --exclude=dev/* --exclude=proc/* --exclude=sys/* --exclude=tmp/* --exclude=media/* root@example.com:/ .

# limit bandwith to 2 mbit/s
rsync --bwlimit=2000 --delete -avz root@www.example.com:/ /media/backup/www.example.com/$(date -I)/

find

# find files without read / write permissions for other
find /media/foo /media/bar ! -perm -o+rw -exec ls -l {} \;
find /media/foo /media/bar -ctime -1 -type f ! -perm -go+rw -exec chmod a+rw {} \;
find /media/foo /media/bar -1 -type d ! -perm -go+rwx -exec chmod 777 {} \;

curl

# authentification
curl www.example.com --user username:password

Upgrade SSH to v7.3 with include support

echo "deb http://archive.ubuntu.com/ubuntu yakkety main" > /etc/apt/sources.list.d/yakkety.list
apt-get update
apt-get install -y ssh
rm /etc/apt/sources.list.d/yakkety.list
apt-get update

ssh -V
OpenSSH_7.3p1 Ubuntu-1, OpenSSL 1.0.2g 1 Mar 2016

mkdir ~/.ssh/config.d
sed -i '1iInclude config.d/*' ~/.ssh/config

Links
https://superuser.com/questions/247564/is-there-a-way-for-one-ssh-config-file-to-include-another-one

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

Syndicate content