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Keystone at the Center
of Our Universe
Dawei Ding, Fangzhou Xu, Subbu Allamaraju
eBay Inc
What does our
universe look like?
AZs
Where can find the cloud?
Where do I login?
What’s where?
Cross-AZ operations
User and role management
VPCs
Segmented security zones
Same services
Different auth and access policies
Layers
Above
PaaS, XaaS
Kubernetes
Other cloud services
Headless access
Layers
Below
Hypervisor provisioning
Below-cloud tools
Operators
IAMwithout actually managing users
Global, available, secure
Semi-trusted cloud
services
(in the control plane)
Untrusted cloud
users
Global Keystone
in a Trusted
Control Plane
Multi-factor
authentication
API Keys
API Extensions
LB VIP LB VIP LB VIP
Donor
…
DNS routing (affinity based) for DB
ks
LB VIP
ks… ks
LB VIP
ks… ks
LB VIP
ks…
DNS routing (affinity based) for Keystone service
Galera based replication of select tables
10 new tokens/sec on average – peak at 100
tokens/sec
High write latencies (~400 msec)
Started with PKI, moved to PKIZ (60%
reduction)
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8k
More AZs and more cloud services lead to
humongous tokens
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FrNCVbxGL_k8tGIVFL5FdgfeJ1eve4Kirk9FkLMO1fwVon5pe6xR3FzAjp7RZHNOIr9Fqxw6JKrVbM2txIdW0WUp0wGcqLE5OmYlkoJe01C_Eh5rZLBt4tQfmu0ChBXYkzxERSEGHtMIDa3Ckd0SwfvJHpLHr8WEotBLx9QEwrkHQnvlUdLRqBgUlhFX1njZ0GpiYYREbdfkzF8rwa-jPkaPXQv-
IsOgdZMX3iiz6A7Li3xRZ9EFf0FFhFA-LxKewxYRDeNBnjmbnMNtAhrxwjEDADZ6Rd3zBM7Hod2STDxVZ9Day_OTCUrNuoTKNJD7rNKUbBD2N7ePpXIJ1m0z013CyfHwihP2Th57-fn4Y-how2LsH8zpJAkwguBN8BXDOW_FqLDfrFzYXKHRGgRsL_DTEOnhwyHs5aVyJae6MNqRCpMxmVLCkKd87-xIb4Xe_-
GJlwiK-mKKEBSAysPp8ffWJO1IngCUVguctfO-0GpbHTTpL1_Zi2ncUgunw8tTQx2jBxdYDgmtLFUf1RB9Wf4mihzLfBD1rqMQisH1DBrxA2n0vd3wZspNXo0uDExg4mICBsmbAYesrFbAwjKnCQwLgkPF6w5OhrhwoefDmlriwr14Z-D-
Ntn2MhJnXWwgcMOKqlM9YnXWQzsVX31BlGsBNzVDgxqbgZduGg77CcmUgmQ90JcdqGOJOK2WsZCSEp7AShgBWyGF31moy1ULXNTU5DGPQLNV0B8utMY5FatYuw0gCu-92hiZH1wkw1sRUTHupfjCWJ7h01ROVrqXIv9wh0XiJ1H66eOqK4sp6lulyEhj-o3Hw5lywIilTinTveYlB03l9biTxPibzBbI042Z-
z0tkdrPr-rVVHG4vCW3cxf0DjrI7J5c_6_QQJPd--KW52So-ba0vzsJd9nyZrY8W-rZVDX-dDTcLsdbjWbxpB2V9JnfGzWVIpYLbb42NNtyzhUn2ihabe2_Ve0lnzpdlweaiiW43QudnG8pWGh38-
53IbpPCrDbVTsYzg9lLZvafm3O3xPKjRCU36j2heTjd3CipcevuXaTcVu1CS2pyFm1Vtb_lzc2DePIebXJW5pxrl13w9WEr2IrrkbTib-_O9yclOq6EjY4V3lOR4X82K3aMhmr5hX72Dyvz8fGyP19ws0uco_tNXrmqGYv3t-1JDr9U59j99180Xfx1ov34J8B_QEtYwg==
2k
Remove service catalog from tokens
Two Factor Authentication
A per-VPC policy
VPC is a property of a project
All projects in a given VPC share the policy
Entirely dynamic and configuration driven
POST /v2.0/tokens
{
"auth": {
"passwordCredentials": {
"username": "jsmith",
"password": "…”
}
}
}
Compatible for token generation
No changes for token validation
Proprietary extensions for resync
API Key
Designed for headless use cases
A replacement for username, password tuple
Create as many as you like
Revoke at will
Can be ephemeral
API Key
POST /api_key
X-Auth-Token A valid auth token (header)
source_project_id An optional source project (defaults to
current)
expires-at An optional expiry
role_ids An optional subset of roles
group_ids An optional subset of groups
ip_addresses An optional subset of sources (default
to the project’s compute VPC)
Limited Authentication Boundary
Blocked if the caller source is not whitelisted
Blocked if used from a different VPC
Blocked if used from a different project
Upstream blueprints/commits soon
Thanks

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