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nasa-cryo: k8s 1.22 to 1.25, node sharing setup #2374

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Mar 20, 2023
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nasa-cryo: k8s 1.22 to 1.25, node sharing setup #2374

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487669f
nasa-cryo: k8s 1.22 to 1.25, node sharing
consideRatio Mar 19, 2023
1237f32
nasa-cryo: profile list for node sharing, small + medium for advanced…
consideRatio Mar 19, 2023
a3ac1ef
nasa-cryo: comment out maintenance announcement
consideRatio Mar 19, 2023
1ea720f
nasa-cryo: remove commented out maintenance announcement
consideRatio Mar 20, 2023
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223 changes: 174 additions & 49 deletions config/clusters/nasa-cryo/common.values.yaml
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Expand Up @@ -56,22 +56,6 @@ basehub:
- fperez
JupyterHub:
authenticator_class: github
# Announcement is a JupyterHub feature to present messages to users in
# web pages under the /hub path (JupyterHub responds), but not via the
# /user path (single-user server responds).
#
# ref: https://github.com/2i2c-org/infrastructure/issues/1501
# ref: https://jupyterhub.readthedocs.io/en/stable/reference/templates.html#announcement-configuration-variables
#
template_vars:
announcement: >-
<strong>
Service maintenance is scheduled Sunday March 19, to Monday 8AM
EST.
</strong>
<br/>
Running servers may be forcefully stopped and service disruption
is expected.
GitHubOAuthenticator:
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Do we need to leave this commented in? I'd suggest adding an example to the docs maybe under SRE Guilde>Support Tasks or How-to to set maintenance announcements rather than leaving commented out code lying around.

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Removed in 1ea720f.

Makes sense to document this, I'm opening an issue about it.

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Opened #2379!

# We are restricting profiles based on GitHub Team membership and
# so need to populate the teams in the auth state
Expand All @@ -95,53 +79,194 @@ basehub:
subPath: _shared
readOnly: true
profileList:
# The mem-guarantees are here so k8s doesn't schedule other pods
# on these nodes.
- display_name: "Small: m5.large"
description: "~2 CPU, ~8G RAM"
# NOTE: About node sharing
#
# CPU/Memory requests/limits are actively considered still. This
# profile list is setup to involve node sharing as considered in
# https://github.com/2i2c-org/infrastructure/issues/2121.
#
# - Memory requests are different from the description, based on:
# whats found to remain allocate in k8s, subtracting 1GiB
# overhead for misc system pods, and transitioning from GB in
# description to GiB in mem_guarantee.
# - CPU requests are lower than the description, with a factor of
# 10%.
#
- display_name: "Small: up to 4 CPU / 32 GB RAM"
description: &profile_list_description "Start a container with at least a chosen share of capacity on a node of this type"
slug: small
default: true
allowed_teams:
- 2i2c-org:hub-access-for-2i2c-staff
- CryoInTheCloud:cryoclouduser
- CryoInTheCloud:cryocloudadvanced
profile_options:
requests:
# NOTE: Node share choices are in active development, see comment
# next to profileList: above.
display_name: Node share
choices:
mem_1:
default: true
display_name: ~1 GB, ~0.125 CPU
kubespawner_override:
mem_guarantee: 0.904G
cpu_guarantee: 0.013
mem_2:
display_name: ~2 GB, ~0.25 CPU
kubespawner_override:
mem_guarantee: 1.809G
cpu_guarantee: 0.025
mem_4:
display_name: ~4 GB, ~0.5 CPU
kubespawner_override:
mem_guarantee: 3.617G
cpu_guarantee: 0.05
mem_8:
display_name: ~8 GB, ~1.0 CPU
kubespawner_override:
mem_guarantee: 7.234G
cpu_guarantee: 0.1
mem_16:
display_name: ~16 GB, ~2.0 CPU
kubespawner_override:
mem_guarantee: 14.469G
cpu_guarantee: 0.2
mem_32:
display_name: ~32 GB, ~4.0 CPU
kubespawner_override:
mem_guarantee: 28.937G
cpu_guarantee: 0.4
kubespawner_override:
# Explicitly unset mem_limit, so it overrides the default memory limit we set in
# basehub/values.yaml
cpu_limit: null
mem_limit: null
mem_guarantee: 6.5G
node_selector:
node.kubernetes.io/instance-type: m5.large
- display_name: "Medium: m5.xlarge"
description: "~4 CPU, ~15G RAM"
allowed_teams:
- 2i2c-org:hub-access-for-2i2c-staff
- CryoInTheCloud:cryoclouduser
- CryoInTheCloud:cryocloudadvanced
kubespawner_override:
mem_limit: null
mem_guarantee: 12G
node_selector:
node.kubernetes.io/instance-type: m5.xlarge
- display_name: "Large: m5.2xlarge"
description: "~8 CPU, ~30G RAM"
allowed_teams:
- 2i2c-org:hub-access-for-2i2c-staff
- CryoInTheCloud:cryocloudadvanced
kubespawner_override:
mem_limit: null
mem_guarantee: 26G
node_selector:
node.kubernetes.io/instance-type: m5.2xlarge
- display_name: "Huge: m5.8xlarge"
description: "~32 CPU, ~128G RAM"
node.kubernetes.io/instance-type: r5.xlarge

- display_name: "Medium: up to 16 CPU / 128 GB RAM"
description: *profile_list_description
slug: medium
allowed_teams:
- 2i2c-org:hub-access-for-2i2c-staff
- CryoInTheCloud:cryocloudadvanced
profile_options:
requests:
# NOTE: Node share choices are in active development, see comment
# next to profileList: above.
display_name: Node share
choices:
mem_1:
display_name: ~1 GB, ~0.125 CPU
kubespawner_override:
mem_guarantee: 0.942G
cpu_guarantee: 0.013
mem_2:
display_name: ~2 GB, ~0.25 CPU
kubespawner_override:
mem_guarantee: 1.883G
cpu_guarantee: 0.025
mem_4:
default: true
display_name: ~4 GB, ~0.5 CPU
kubespawner_override:
mem_guarantee: 3.766G
cpu_guarantee: 0.05
mem_8:
display_name: ~8 GB, ~1.0 CPU
kubespawner_override:
mem_guarantee: 7.532G
cpu_guarantee: 0.1
mem_16:
display_name: ~16 GB, ~2.0 CPU
kubespawner_override:
mem_guarantee: 15.064G
cpu_guarantee: 0.2
mem_32:
display_name: ~32 GB, ~4.0 CPU
kubespawner_override:
mem_guarantee: 30.128G
cpu_guarantee: 0.4
mem_64:
display_name: ~64 GB, ~8.0 CPU
kubespawner_override:
mem_guarantee: 60.257G
cpu_guarantee: 0.8
mem_128:
display_name: ~128 GB, ~16.0 CPU
kubespawner_override:
mem_guarantee: 120.513G
cpu_guarantee: 1.6
kubespawner_override:
cpu_limit: null
mem_limit: null
mem_guarantee: 115G
node_selector:
node.kubernetes.io/instance-type: m5.8xlarge
node.kubernetes.io/instance-type: r5.4xlarge

# NOTE: The large option is added as a comment for now. It may be that
# its relevant in the future for advanced users having a workshop,
# and then its possible to enable more easily.
#
# This setup was discussed with Tasha Snow in March 2023 at
# https://2i2c.freshdesk.com/a/tickets/543.
#
# - display_name: "Large: up to 64 CPU / 512 GB RAM"
# description: *profile_list_description
# slug: large
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# allowed_teams:
# - 2i2c-org:hub-access-for-2i2c-staff
# - CryoInTheCloud:cryocloudadvanced
# profile_options:
# requests:
# # NOTE: Node share choices are in active development, see comment
# # next to profileList: above.
# display_name: Node share
# choices:
# mem_4:
# display_name: ~4 GB, ~0.5 CPU
# kubespawner_override:
# mem_guarantee: 3.821G
# cpu_guarantee: 0.05
# mem_8:
# display_name: ~8 GB, ~1.0 CPU
# kubespawner_override:
# mem_guarantee: 7.643G
# cpu_guarantee: 0.1
# mem_16:
# default: true
# display_name: ~16 GB, ~2.0 CPU
# kubespawner_override:
# mem_guarantee: 15.285G
# cpu_guarantee: 0.2
# mem_32:
# display_name: ~32 GB, ~4.0 CPU
# kubespawner_override:
# mem_guarantee: 30.571G
# cpu_guarantee: 0.4
# mem_64:
# display_name: ~64 GB, ~8.0 CPU
# kubespawner_override:
# mem_guarantee: 61.141G
# cpu_guarantee: 0.8
# mem_128:
# display_name: ~128 GB, ~16.0 CPU
# kubespawner_override:
# mem_guarantee: 122.282G
# cpu_guarantee: 1.6
# mem_256:
# display_name: ~256 GB, ~32.0 CPU
# kubespawner_override:
# mem_guarantee: 244.565G
# cpu_guarantee: 3.2
# mem_512:
# display_name: ~512 GB, ~64.0 CPU
# kubespawner_override:
# mem_guarantee: 489.13G
# cpu_guarantee: 6.4
# kubespawner_override:
# cpu_limit: null
# mem_limit: null
# node_selector:
# node.kubernetes.io/instance-type: r5.16xlarge
scheduling:
userScheduler:
enabled: true
20 changes: 7 additions & 13 deletions eksctl/nasa-cryo.jsonnet
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Expand Up @@ -25,10 +25,9 @@ local nodeAz = "us-west-2a";
// A `node.kubernetes.io/instance-type label is added, so pods
// can request a particular kind of node with a nodeSelector
local notebookNodes = [
{ instanceType: "m5.large" },
{ instanceType: "m5.xlarge" },
{ instanceType: "m5.2xlarge" },
{ instanceType: "m5.8xlarge" },
{ instanceType: "r5.xlarge" },
{ instanceType: "r5.4xlarge" },
{ instanceType: "r5.16xlarge" },
];

local daskNodes = [
Expand All @@ -38,10 +37,7 @@ local daskNodes = [
// *first* item in instanceDistribution.instanceTypes, to match
// what we do with notebook nodes. Pods can request a particular
// kind of node with a nodeSelector
{ instancesDistribution+: { instanceTypes: ["m5.large"] }},
{ instancesDistribution+: { instanceTypes: ["m5.xlarge"] }},
{ instancesDistribution+: { instanceTypes: ["m5.2xlarge"] }},
{ instancesDistribution+: { instanceTypes: ["m5.8xlarge"] }},
{ instancesDistribution+: { instanceTypes: ["r5.4xlarge"] }},
];


Expand All @@ -51,7 +47,7 @@ local daskNodes = [
metadata+: {
name: "nasa-cryo",
region: clusterRegion,
version: '1.22'
version: '1.25'
},
availabilityZones: masterAzs,
iam: {
Expand Down Expand Up @@ -83,7 +79,7 @@ local daskNodes = [
ssh: {
publicKeyPath: 'ssh-keys/nasa-cryo.key.pub'
},
instanceType: "m5.xlarge",
instanceType: "r5.xlarge",
minSize: 1,
maxSize: 6,
labels+: {
Expand Down Expand Up @@ -138,6 +134,4 @@ local daskNodes = [
},
} + n for n in daskNodes
]


}
}