Time Traveling in the Universe of Microservices and Orchestration

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@errordeveloper Time Traveling in the Universe of Microservices and Orchestration

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outline: 1. my journey in software

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outline: 2. where are we today

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containers?

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1. packages

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2. resources

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university life

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root #

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root # chroot /mnt/gentoo /bin/bash

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root # chroot /mnt/gentoo /bin/bash root # source /etc/profile

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root # chroot /mnt/gentoo /bin/bash root # source /etc/profile root #

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root # chroot /mnt/gentoo /bin/bash root # source /etc/profile root # export PS1="(chroot) $PS1"

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root # chroot /mnt/gentoo /bin/bash root # source /etc/profile root # export PS1="(chroot) $PS1" (chroot) root #

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root # chroot /mnt/gentoo /bin/bash root # source /etc/profile root # export PS1="(chroot) $PS1" (chroot) root # emerge \ --ask \ --update \ --deep \ --newuse \ @world

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root # man nice

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> ./configure \ --prefix=/opt/${PN}-${PV} \ --with--path=… > make && make install

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> make CC=

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> make CC=arm-none-eabi-gcc

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> make CC=arm-none-eabi-gcc \ LD=arm-none-eabi-ld

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> module load gcc/6.1.1 > which gcc /usr/local/gcc/6.1.1/linux-x86_64/bin/gcc > module unload gcc > which gcc gcc: Command not found. http://modules.sourceforge.net

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http://modules.sourceforge.net

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work life

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shared hosting

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shared hosting

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devops hammer

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#!/bin/bash -eu git clone $repo $dir cd $dir puppet apply manifest.pp

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# add this to your profile [[ -s $HOME/.rvm/scripts/rvm ]] \ && source $HOME/.rvm/scripts/rvm # you will get $PATH modified on chdir cd(){ builtin cd $* source after_cd_hooks }

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> sudo apt-get install rubygems > sudo gem install bundler > cd /opt/$myapp > bundle install

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> sudo apt-get install python-pip > sudo pip install --upgrade pip > cd /opt/$myapp > pip install -r requirements.txt

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> sudo apt-get install nodejs > cd /opt/$myapp > npm install

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> cap deploy:production

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> cap break:production

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> my_vm="$(vm take)” > vm ssh “${my_vm}”

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> my_vm="$(vm take)” > vm ssh “${my_vm}” vm-012345> # do work

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> my_vm="$(vm take)” > vm ssh “${my_vm}” vm-012345> # do work > vm kill "${my_vm}"

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docker goes viral

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today

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Weave Net app overlay network

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host2 host1 8083 8083 8081 8082

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host2 host1 8081 8082 8083 8083 8081 8082

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host2 host1 8081 8082 8083 8083 8081 8082 9083 9081 9082

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host2 host1 8081 8082 8083 8083 8081 8082 9083 9081 9081 8084 8084

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$ORIGIN example.com $TTL 86400 @ IN SOA dns1.example.com. hostmaster.example.com. ( 2001062501 ; serial 21600 ; refresh after 6 hours 3600 ; retry after 1 hour 604800 ; expire after 1 week 86400 ) ; minimum TTL of 1 day IN NS dns1.example.com. IN NS dns2.example.com. IN MX 10 mail.example.com. IN MX 20 mail2.example.com. IN A 10.0.1.5 server1 IN A 10.0.1.5 server2 IN A 10.0.1.7 dns1 IN A 10.0.1.2 dns2 IN A 10.0.1.3 ftp IN CNAME server1 mail IN CNAME server1 mail2 IN CNAME server2 www IN CNAME server2

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host2 host1 8080 8080 8080 8080 8080 8080 8080 8080 8080 8080 8080 Weave Net

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host2 host1 8080 8080 8080 8080 8080 8080 8080 8080 8080 8080 8080 denied! NetworkPolicy

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Weave Scope distributed observability

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app runtime metadata and APIs

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> ps -ef | grep java java -jar /opt/myapp-v2.jar > stat -c %y /opt/myapp-v2.jar 2005-06-25 17:52:40.000000000

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filter containers by image & sort by count

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examine relationship between containers e.g. front-end & load-test

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examine memory usage of related microservices and time travel!

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here’s what it did last night!

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easily check if a container works correctly e.g. load-test is still running without errors

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GitOps API-driven deployments

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every deploy action is checked in git

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every deploy action is checked in git e.g. locking a service stores an annotation

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every deploy action is checked in git e.g. locking a service stores an annotation