Steven Borrelli Asteris, LLC @stevendborrelli converge 

https://aster.is Founded 2014 Based in St. Louis Experts in: Cloud, Containers, DevOps 

T R E N D S converge distributed teams cloud microservices containers technology people 

converge 

packages user/group management docker containers & images systemd logical volumes converge manages systems files, directories, etc. 

easy to use converge plan build-env.hcl converge apply —param masters=3 etcd.hcl 11mb binary (cli + modules + agent) converge start with a single file 

simple configuration converge param "image-tag" { default = "1.10-alpine" } docker.image "nginx" { name = "nginx" tag = "{{param `image-tag`}}" timeout = "60s" } docker.container "nginx" { name = "nginx-server" image = "nginx:{{lookup `docker.image.nginx.Tag`}}" force = "true" ports = ["80"] env { "HOSTNAME" = “http://converge.aster.is“ } } 

C O N F I G U R I N G C LU S T E R S converge Deploy and Manage Distributed Applications (Kubernetes, Swarm, Consul, etc.) 

uses terraform provisioner spin up clusters with one command https://github.com/asteris-llc/terraform-provisioner-converge converge https://asciinema.org/a/day0xarm3i95jgodmcsapp40u replay: D O C K E R S WA R M 

D O C K E R S WA R M converge dependency graph 

creating graphs visualize install tasks converge converge graph converge.hcl graphviz output 

D O C K E R S WA R M converge wait dependency 

graph benefits automatic dependency generation pinpoint failures parallel execution converge 

examples 

converge file.directory "data" { destination = "/var/lib/influxdb" } module "docker/container.hcl" "influx" { params { name = "influxdb" image = "influxdb" tag = "1.0.0-rc1" ports = ["8086:8086"] volumes = ["/var/lib/influxdb:/var/lib/influxdb"] } depends = ["file.directory.data"] } wait for a directory & pass parameters into modules 

conditional task execution converge switch "deps" { case "eq `{{platform.LinuxDistribution}}` `centos`" "centos" { package.rpm "deps" { name = "coreutils gcc git graphviz make tar unzip which" state = "present" } } case "eq `{{platform.LinuxDistribution}}` `debian`" "debian" { task "package-install" { check = "dpkg -s {{param `name`}} >/dev/null 2>&1" apply = "apt-get -y install {{param `packages`}}" } } } 

wait for a file to be present converge wait.query "unzip-check" { check = "unzip -v" interval = "2s" max_retry = 60 grace_period = "3s" interpreter = "/bin/bash" } task "protoc-extract" { check = "[[ -f /usr/local/bin/protoc ]]" apply = "unzip /tmp/protoc-{{param `protoc-version`}}-linux- x86_64.zip" dir = "/usr/local" interpreter = "/bin/bash" depends = ["wait.query.unzip-check"] } 

U N AT T E N D E D I N S TA L L S converge pull files from http run converge via cron Autoscaling groups, IoT devices 

verify modules via pgp add trusted keys and verify modules converge converge key trust samples/pubkey.gpg converge plan —verify-modules samples/ basic.hcl 

D E V E LO P E R S converge ad-hoc solutions (npm, brew, etc.) DevOps tools currently not used Need to install lots of tools & run docker containers 

easy to share embed converge files with source code converge publish via http, s3 wrap scripts (shell, ruby, etc.) 

api first via all communication (including cli) is via grpc devices look like another microservice http/2 bi-directional streaming converge 

summary composable modules visualize tasks converge single binary deployment 

Thanks! converge.aster.is github.com/asteris-llc/converge converge-slack.aster.is 

converge 

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