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# from https://www.digitalocean.com/community/tutorials/how-to-install-java-on-centos-and-fedora

# JDK 7
#------
# Change to your home directory and download the Oracle Java 7 JDK RPM with these commands:
cd ~
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm"
# Then install the RPM with this yum command (if you downloaded a different release, substitute the filename here):
sudo yum localinstall jdk-7u79-linux-x64.rpm

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# from:https://quicktechnotes.wordpress.com/2017/01/02/how-to-install-mongodb-elasticsearch-and-graylog-on-centos-7/

# Install EPEL
sudo rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
sudo yum -y install pwgen

sudo yum -y update

# Add mongodb repo.
sudo vi /etc/yum.repos.d/mongodb-org-3.2.repo

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# from https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-centos-7
sudo yum install epel-release
sudo yum update

sudo yum install nginx

# start nginx
sudo systemctl start nginx

# If you are running a firewall, run the following commands to allow HTTP and HTTPS traffic:

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echo `date "+%Y-%m-%d-%H-%M-%S"`
# outptut - 2017-05-22-14-38-18

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slappasswd -h {SSHA} -s password

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brew install numpy
brew install scipy
brew install matplotlib
---
*VirtualEnv*
$ mkvirtualenv ml
$ cd .virtualenvs/ml/
$ ln -s /usr/local/lib/python2.7/site-packages/{numpy,scipy}* lib/python2.7/site-packages/
$ workon ml
(ml) $ pip freeze | grep -i numpy

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# On OS X

$ vi ~/.bash_profile

# Add following for running spark, pyspark, jupyter
#-----
# FOR SPARK
#-----
#
# for PYSPARK

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# Possibly obsolete: k3d create --name testcls1 --workers 3
k3d create --name testcls1 --workers 3 --server-arg "--no-deploy=traefik" --server-arg "--no-deploy=servicelb"

# UPDATE: in newer versions onwards, this has evolved to (thanks to comments below):
k3d cluster create --k3s-arg "--no-deploy=traefik@server:*"

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create cluster with port 8080 exposed to host for ingress/lb

k3d create --publish 8080:8080 --name testcls1 --workers 3

ref

https://felixwiedmann.de/k3d-manage-k3s-clusters/

demo-app.yaml

---

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#ref https://github.com/rancher/k3d/blob/master/docs/examples.md

Examples

Expose services

1. via Ingress

In this example, we will deploy a simple nginx webserver deployment and make it accessible via ingress.