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- glean: a minimal non-cloud-init cloud-init -

Monty Taylor

http://inaugust.com/talks/glean.html

twitter: @e_monty

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When you boot a VM, it needs boot time data or bootstrapping

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I use ansible for orchestration

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I don't need boot time fancy, - I JUST need ssh bootstrap

Ok. And maybe network

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Things I must consume at boot

- Network Configuration -
- maybe SSH Keys -

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Network information should be easy

There is this thing called DHCP

Dynamic Host Configuration Protocol

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Some providers don't support DHCP - because bong

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cloud-init

Handles many cases, but not all

Has lots of dependencies that conflict with gate depends

'frozen' pending 2.0 rewrite

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glean

http://git.openstack.org/cgit/openstack-infra/glean

No dependencies

Handles future static network config in config drive

Optionally also reads ssh keys from config drive

Nothing else

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network_info.json

Hopefully added in liberty

-services:
-- type: dns
-  address: 72.3.128.241
-- type: dns
-  address: 72.3.128.240
-networks:
-- network_id: 00000000-0000-0000-0000-000000000000
-  type: ipv4
-  netmask: 255.255.255.0
-  link: tapfafb5c05-a6
-  routes:
-  - netmask: 0.0.0.0
-    network: 0.0.0.0
-    gateway: 23.253.229.1
-  ip_address: 23.253.229.154
-  id: network0
-- network_id: 11111111-1111-1111-1111-111111111111
-  type: ipv4
-  netmask: 255.255.224.0
-  link: tape501e1cd-10
-  routes:
-  - netmask: 255.240.0.0
-    network: 10.176.0.0
-    gateway: 10.208.160.1
-  - netmask: 255.240.0.0
-    network: 10.208.0.0
-    gateway: 10.208.160.1
-  ip_address: 10.208.169.118
-  id: network1
-links:
-- ethernet_mac_address: BC:76:4E:01:62:86
-  mtu: 1500
-  type: null
-  id: tapfafb5c05-a6
-  vif_id: fafb5c05-a661-48ae-9810-46601c7e22d1
-- ethernet_mac_address: BC:76:4E:05:7B:06
-  mtu: 1500
-  type: null
-  id: tape501e1cd-10
-  vif_id: e501e1cd-10d0-4e63-b0c2-6542989ccbb2
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Integrated with diskimage-builder

-disk-image-create -o debian.qcow2 debian-minimal vm simple-init
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You know what has less depends than minimal python?

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Rust

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glean.rs

https://gitlab.com/mordred/glean.rs

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Thank you!

http://inaugust.com/talks/glean.html

twitter: @e_monty

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