converge

converge is a new configuration management tool that makes it easy to configure servers and desktops.

1. Steven Borrelli Asteris, LLC @stevendborrelli converge
2. https://aster.is Founded 2014 Based in St. Louis Experts in: Cloud, Containers, DevOps
3. T R E N D S converge distributed teams cloud microservices containers technology people
4. converge
5. packages user/group management docker containers & images systemd logical volumes converge manages systems files, directories, etc.
6. 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
7. 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“ } }
8. 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.)
9. 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
10. D O C K E R S WA R M converge dependency graph
11. creating graphs visualize install tasks converge converge graph converge.hcl graphviz output
12. D O C K E R S WA R M converge wait dependency
13. graph benefits automatic dependency generation pinpoint failures parallel execution converge
14. examples
15. 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
16. 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`}}" } } }
17. 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"] }
18. 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
19. verify modules via pgp add trusted keys and verify modules converge converge key trust samples/pubkey.gpg converge plan —verify-modules samples/ basic.hcl
20. 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
21. easy to share embed converge files with source code converge publish via http, s3 wrap scripts (shell, ruby, etc.)
22. api first via all communication (including cli) is via grpc devices look like another microservice http/2 bi-directional streaming converge
23. summary composable modules visualize tasks converge single binary deployment
24. Thanks! converge.aster.is github.com/asteris-llc/converge converge-slack.aster.is
25. converge
26. I M AG E C R E D I T S Arch: Logan Troxel https://unsplash.com/search/arch?photo=DsQmBlby Typewriter: Florian Klauer https://unsplash.com/search/typewriter? photo=mk7D-4UCfmg Tower: Richard Hinds https://unsplash.com/search/tower? photo=TH8a7L1HJXA Stars: Dimi Pigoff https://unsplash.com/new?photo=6y6D3S_sEjw