The future of configuration management (and how to stop it)

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The Future of Conﬁguration Management Puppet Labs Gareth Rushgrove And how to stop it

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Gareth Rushgrove

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@garethr

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Gareth Rushgrove

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Gareth Rushgrove

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More a discussion of problems than solutions Gareth Rushgrove

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A disclaimer Gareth Rushgrove

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What is conﬁguration management?

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A discipline Gareth Rushgrove

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Any input to your infrastructure is conﬁguration Gareth Rushgrove

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Conﬁguration management is about managing those inputs over time Gareth Rushgrove

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Conﬁguration management is about managing those inputs over time and at scale* Gareth Rushgrove *thanks @lutter

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Gareth Rushgrove Conﬁguration management is about managing those inputs over time and at scale*

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A little history

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1950s research, 1960s 480 series, 1991 MIL- HDBK-61, 1998 ANSI- EIA-649 Gareth Rushgrove

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Military Handbook Conﬁguration Management Guidance MIL-HDBK-61B Gareth Rushgrove

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Identiﬁcation Control Status accounting Veriﬁcation and audit Gareth Rushgrove

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National Consensus Standard for Conﬁguration Management EIA-649 Gareth Rushgrove

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Configuration management verifies that a system is identified and documented in sufficient detail Gareth Rushgrove

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Conﬁguration management veriﬁes that a system performs as intended Gareth Rushgrove

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Service management, ITIL, ISO 20000, ISO 9000, ISO 10007 Gareth Rushgrove

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Infrastructure as code Gareth Rushgrove

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Files, services, packages, users, groups Gareth Rushgrove

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This talk

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Predict the future Gareth Rushgrove

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Look at what needs conﬁguring Gareth Rushgrove

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Near term

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Infrastructure as a service Gareth Rushgrove

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Gareth Rushgrove

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Gareth Rushgrove

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Software deﬁned networks Gareth Rushgrove

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Network devices with APIs Gareth Rushgrove

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Cloud networks Gareth Rushgrove

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Gareth Rushgrove

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Overlay networks Gareth Rushgrove

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Gareth Rushgrove Weave

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Medium term

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Distributed conﬁguration Gareth Rushgrove

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Etcd, Consul, Zookeeper Gareth Rushgrove

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Replacement for conﬁguration ﬁles Gareth Rushgrove

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Need to manage (some) information going in. Say for change control reasons Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Gareth Rushgrove

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Gareth Rushgrove

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Service discovery vs modelling — choosing the right abstraction Gareth Rushgrove

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Containers Gareth Rushgrove

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Gareth Rushgrove

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Containers as a new package format Gareth Rushgrove

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Images AND running containers Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Containers as virtual machines Gareth Rushgrove

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Containers as processes Gareth Rushgrove

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Gareth Rushgrove

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Gareth Rushgrove

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App container speciﬁcation Gareth Rushgrove

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New operating systems addressing host level complexity Gareth Rushgrove

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Gareth Rushgrove

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Gareth Rushgrove

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Gareth Rushgrove

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Read-only ﬁle systems Gareth Rushgrove

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Atomic changes Gareth Rushgrove

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Collapse all files, packages, users, etc. down to a single hash Gareth Rushgrove Identification Control Status accounting Verification and audit

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Cloud infrastructure II — A new hope Gareth Rushgrove

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Platform as a service Gareth Rushgrove

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Gareth Rushgrove

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Buildpacks Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Application composition Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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CloudFoundry application security groups Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Gareth Rushgrove

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Environment variables Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Longer term

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Cloud infrastructure III — The cloud strikes back Gareth Rushgrove

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Infrastructure-less execution environments Gareth Rushgrove

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Azure WebJobs, AWS Lamda Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Autonomous systems Gareth Rushgrove

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Autoscaling Gareth Rushgrove

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Group size, scaling policies, instance details Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Gareth Rushgrove

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Gareth Rushgrove

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Gareth Rushgrove

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Pods, Services, ReplicationControllers Gareth Rushgrove Identiﬁcation Control Status accounting Veriﬁcation and audit

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Gareth Rushgrove

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Gareth Rushgrove

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Unikernels Gareth Rushgrove

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OSv Gareth Rushgrove

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MirageOS Gareth Rushgrove

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Conclusions

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The breadth of infrastructure we manage is only increasing Gareth Rushgrove

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The importance of infrastructure APIs Gareth Rushgrove

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Modelling higher level primitives Gareth Rushgrove

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Focusing on inputs to dynamic systems Gareth Rushgrove

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Multiple speeds of conﬁguration Gareth Rushgrove

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One tool or a collection of tools? Gareth Rushgrove

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One interface or a collection of interfaces? Gareth Rushgrove

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Standards? Gareth Rushgrove

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The future is already here — it's just not very evenly distributed. Gareth Rushgrove William Gibson

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Questions? And thanks for listening