January 24, 2017

Quickstart Docker Swarm

What is Docker Swarm Mode? A swarm is a cluster of Docker engines, or nodes, where you deploy services. What is a node? A node is an instance of the Docker engine participating in the swarm. You can also think of this as a Docker node. You can run one or more nodes on a single physical computer or cloud server, but production swarm deployments typically include Docker nodes distributed across multiple physical and cloud machines. Read more

January 9, 2017

Distributed Minio with Docker

Ok, I think I will switch to english for the next posts ;-) I've created an Minio Docker-Image for ARM. Which can be found on GitHub or on Dockerhub. Today I want to show you how to run Minio it in distributed mode. The distributed mode can give you high availability and data protection. Preparing the Nodes Storage Directory You need a directory on each node to store the data and an additional one for storing the configuration. Read more

January 6, 2017

Quickstart Guide How to Install Docker a Raspberry Pi

Docker on my Raspberry PI Cluster Installation See here https://docs.docker.com/engine/installation/linux/debian/ Purge any older repositories (not necessary with a clean, new debian installation) $ apt-get purge "lxc-docker*" $ apt-get purge "docker.io*" Update package information, ensure that APT works with the https method, and that CA certificates are installed. $ apt-get update $ apt-get install apt-transport-https ca-certificates gnupg2 Add the new GPG key. $ sudo apt-key adv \ --keyserver hkp://ha.pool.sks-keyservers.net:80 \ --recv-keys 58118E89F3A912897C070ADBF76221572C52609D Edit /etc/apt/sources. Read more

January 6, 2017

Minio Docker Image für Raspberry Pi

Was ist Minio? Minio ist ein Object Storage Server für Entwickler oder kleine Umgebungen. Und auf dem Raspberry? Auf der Quickstart Seite von Minio ist beschrieben wie man den Docker Container startet. Auf dem Raspberry funktioniert das natürlich nicht (weil der Container nicht für die ARM-Platform gebaut ist) Deshalb habe ich ein Dockerfile für den Raspberry gebaut. Die Quellen sind wie immer auf GitHub und auf Docker Hub ist ein Image zu finden. Read more

December 11, 2016

Quickstart Guide How to Install Ganglia on a Raspberry Pi Cluster

Masternode # sudo apt-get install ganglia-monitor ganglia-webfrontend # sudo cp /etc/ganglia-webfrontend/apache.conf /etc/apache2/sites-enabled/ganglia.conf Configuration Masternode # sudo vi /etc/ganglia/gmetad.conf Change data_source data_source "CluPi" 60 localhost # sudo vi /etc/ganglia/gmond.conf [...] cluster { name = "CluPi" ## use the name from gmetad.conf owner = "unspecified" latlong = "unspecified" url = "unspecified" } [...] udp_send_channel { #mcast_join = host = port = 8649 ttl = 1 } udp_recv_channel { #mcast_join = 239. Read more

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