- no upfront installation/agents on remote/slave machines - ssh should be enough
- application components should use third-party software, e.g. HDFS, Spark's cluster, deployed separately
- configuration templating
- environment requires/asserts, i.e. we need a JVM in a given version before doing deployment
- deployment process run from Jenkins
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echo -e "\e[1;40m" ; clear ; while :; do echo $LINES $COLUMNS $(( $RANDOM % $COLUMNS)) $(( $RANDOM % 72 )) ;sleep 0.05; done|awk '{ letters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789@#$%^&*()"; c=$4; letter=substr(letters,c,1);a[$3]=0;for (x in a) {o=a[x];a[x]=a[x]+1; printf "\033[%s;%sH\033[2;32m%s",o,x,letter; printf "\033[%s;%sH\033[1;37m%s\033[0;0H",a[x],x,letter;if (a[x] >= $1) { a[x]=0; } }}' |
Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...
// see: https://github.com/chadoe/docker-cleanup-volumes
$ docker volume rm $(docker volume ls -qf dangling=true)
$ docker volume ls -qf dangling=true | xargs -r docker volume rm
Syntax: cat <filename> | jq -c '.[] | select( .<key> | contains("<value>"))'
Example: To get json record having _id equal 611
cat my.json | jq -c '.[] | select( ._id | contains(611))'
Remember: if JSON value has no double quotes (eg. for numeric) to do not supply in filter i.e. in contains(611)
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#!/bin/bash | |
cd $(dirname "${0}") | |
UBUNTU_VERSION=${UBUNTU_VERSION:=16.04.3} | |
INSTALL_HOSTNAME=${INSTALL_HOSTNAME:=ubuntu} | |
USERNAME=${USERNAME:=username} | |
PASSWORD=${PASSWORD:=password} | |
SEED_FILE=${SEED_FILE:=lvm.seed} | |
TIMEZONE=${TIMEZONE:=$(cat /etc/timezone)} |