// This is a jsonnet file, it generates kubernetes manifests.
// To generate and apply, run "jsonnet k8s.jsonnet | kubectl apply -f -"
// Note that this file is currently not as advanced as its docker-compose variant
// This file can only be used for replication nodes and editing nodes
// see config.enabled for more info on what components can be used
{
kind: "List",
apiVersion: "v1",
config:: {
// These are the important top-level settings.
// Change these to configure the services.
// Image tag (application version) to use.
// Note: "latest" is not recommended in production, as you can't be sure what version
// you're actually running, and must manually re-pull to get an updated copy.
image_tag: "latest",
// image tag for postgres, which changes less
// postgres shouldn't be restarted unless absolutely necessary
database_tag: "bb05e37",
// For each component, whether to deploy that component.
enabled: {
downloader: true,
restreamer: true,
backfiller: true,
cutter: false,
sheetsync: false,
thrimshim: true,
segment_coverage: true,
playlist_manager: false,
nginx: true,
postgres: false,
},
// Twitch channels to capture.
// Channels suffixed with a '!' are considered "important" and will be retried more aggressively
// and warned about if they're not currently streaming.
channels: ["desertbus!", "db_chief", "db_high", "db_audio", "db_bus"],
// Stream qualities to capture
qualities: ["source", "480p"],
// NFS settings for RWX (ReadWriteMany) volume for wubloader pods
nfs_server: "nfs.example.com", # server IP or hostname
nfs_path: "/mnt/wubloader", # path on server to mount
nfs_capacity: "2T", # storage capacity to report to k8s
// PVC template storage class for statefulsets
sts_storage_class_name: "longhorn",
// The local port within each container to bind the backdoor server on.
// You can exec into the container and telnet to this port to get a python shell.
backdoor_port: 1234,
// Other nodes to always backfill from. You should not include the local node.
// If you are using the database to find peers, you should leave this empty.
peers: [
],
// This node's name in the nodes table of the database
localhost: "node_name",
// The hostname to use in the Ingress
ingress_host: "wubloader.example.com",
// Set to true to let the ingress handle TLS
ingress_tls: true,
// Ingress class for ingress
ingress_class_name: "nginx",
// Uncomment and give a secretName for ingress, if required for ingress TLS
//ingress_secret_name: "wubloader-tls",
// Additional metadata labels for Ingress (cert-manager, etc.) - adjust as needed for your setup
ingress_labels: {},
// Connection args for the database.
// If database is defined in this config, host and port should be wubloader-postgres:5432.
db_args: {
user: "vst",
password: "dbfh2019", // don't use default in production. Must not contain ' or \ as these are not escaped.
host: "wubloader-postgres",
port: 5432,
dbname: "wubloader",
},
// Other database arguments
db_super_user: "postgres", // only accessible from localhost
db_super_password: "postgres", // Must not contain ' or \ as these are not escaped.
db_replication_user: "replicate", // if empty, don't allow replication
db_replication_password: "standby", // don't use default in production. Must not contain ' or \ as these are not escaped.
db_readonly_user: "vst-ro", // if empty, don't have a readonly account
db_readonly_password: "volunteer", // don't use default in production. Must not contain ' or \ as these are not escaped.
db_standby: false, // set to true to have this database replicate another server
// path to a JSON file containing google credentials for cutter as keys
// 'client_id', 'client_secret', and 'refresh_token'.
cutter_creds: import "./google_creds.json",
// Path to a JSON file containing google credentials for sheetsync as keys
// 'client_id', 'client_secret' and 'refresh_token'.
// May be the same as cutter_creds_file.
sheetsync_creds: import "./google_creds.json",
// The URL to write to the sheet for edit links, with {} being replaced by the id
edit_url: "https://wubloader.example.com/thrimbletrimmer?id={}",
// The spreadsheet ID and worksheet names for sheetsync to act on
sheet_id: "your_id_here",
worksheets: ["Tech Test & Preshow"] + ["Day %d" % n for n in std.range(1,7)],
// Fixed tags to add to all videos
video_tags: ["DB13", "DB2019", "2019", "Desert Bus", "Desert Bus for Hope", "Child's Play Charity", "Child's Play", "Charity Fundraiser"],
// A map from youtube playlist IDs to a list of tags.
// Playlist manager will populate each playlist with all videos which have all those tags.
// For example, tags ["Day 1", "Technical"] will populate the playlist with all Technical
// youtube videos from Day 1.
// Note that you can make an "all videos" playlist by specifying no tags (ie. []).
playlists: {
"YOUR-PLAYLIST-ID": ["some tag"],
},
// The timestamp corresponding to 00:00 in bustime
bustime_start: "1970-01-01T00:00:00Z",
// The timestamps to start/end segment coverage maps at.
// Generally 1 day before and 7 days after bus start.
coverage_start: "1969-12-31T00:00:00Z",
coverage_end: "1970-01-07T00:00:00Z",
// Max hours ago to backfill, ie. do not backfill for times before this many hours ago.
// Set to null to disable.
backfill_max_hours_ago: 24 * 30 * 6, // approx 6 months
// Extra options to pass via environment variables,
// eg. log level, disabling stack sampling.
env: {
// Uncomment this to set log level to debug
// WUBLOADER_LOG_LEVEL: "DEBUG",
// Uncomment this to enable stacksampling performance monitoring
// WUBLOADER_ENABLE_STACKSAMPLER: "true",
},
// Config for cutter upload locations. See cutter docs for full detail.
cutter_config: {
desertbus: {type: "youtube"},
unlisted: {type: "youtube", hidden: true, no_transcode_check: true},
},
default_location: "desertbus",
// The header to put at the front of video titles, eg. a video with a title
// of "hello world" with title header "foo" becomes: "foo - hello world".
title_header: "DB2021",
// The footer to put at the bottom of descriptions, in its own paragraph
description_footer: "Uploaded by the Desert Bus Video Strike Team",
},
// A few derived values.
// The connection string for the database. Constructed from db_args.
db_connect:: std.join(" ", [
"%s='%s'" % [key, $.config.db_args[key]]
for key in std.objectFields($.config.db_args)
]),
// Cleaned up version of $.channels without importance markers
clean_channels:: [std.split(c, '!')[0] for c in $.config.channels],
// k8s-formatted version of env dict
env_list:: [
{name: key, value: $.config.env[key]}
for key in std.objectFields($.config.env)
],
// Which upload locations have type youtube, needed for playlist_manager
youtube_upload_locations:: [
location for location in std.objectFields($.config.cutter_config)
if $.config.cutter_config[location].type == "youtube"
],
// This function generates deployments for each service, since they only differ slightly,
// with only a different image, CLI args and possibly env vars.
// The image name is derived from the component name
// (eg. "downloader" is ghcr.io/ekimekim/wubloader-downloader)
// so we only pass in name as a required arg.
// Optional kwargs work just like python.
deployment(name, args=[], env=[], volumes=[], volumeMounts=[]):: {
kind: "Deployment",
apiVersion: "apps/v1",
metadata: {
name: "wubloader-%s" % name,
labels: {app: "wubloader", component: name},
},
spec: {
replicas: 1,
selector: {
matchLabels: {app: "wubloader", component: name},
},
template: {
metadata: {
labels: {app: "wubloader", component: name},
},
spec: {
containers: [
{
name: name,
// segment-coverage is called segment_coverage in the image, so replace - with _
// ditto for playlist-manager
image: "ghcr.io/ekimekim/wubloader-%s:%s" % [std.strReplace(name, "-", "_"), $.config.image_tag],
args: args,
volumeMounts: [{name: "data", mountPath: "/mnt"}] + volumeMounts,
env: $.env_list + env, // main env list combined with any deployment-specific ones
},
],
volumes: [
{
name: "data",
persistentVolumeClaim: {"claimName": "mnt-wubloader"},
},
] + volumes
},
},
},
},
// This function generates a Service object for each service
service(name):: {
kind: "Service",
apiVersion: "v1",
metadata: {
name: "wubloader-%s" % name,
labels: {app: "wubloader", component: name},
},
spec: {
selector: {app: "wubloader", component: name},
ports: if name == "postgres" then [{name: "postgres", port: 5432, targetPort: 5432},] else [{name: "http", port: 80, targetPort: 80}],
},
},
// This function generates a StatefulSet object (for postgres)
statefulset(name, args=[], env=[]):: {
kind: "StatefulSet",
apiVersion: "apps/v1",
metadata: {
name: "wubloader-%s" % name,
labels: {app: "wubloader", component: name},
},
spec: {
replicas: 1,
selector: {
matchLabels: {app: "wubloader", component: name},
},
serviceName: "wubloader-%s" % name,
template: {
metadata: {
labels: {app: "wubloader", component: name},
},
spec: {
containers: [
{
name: name,
image: "ghcr.io/ekimekim/wubloader-%s:%s" % [name, $.config.database_tag],
args: args,
env: $.env_list + env, // main env list combined with any statefulset-specific ones
volumeMounts: [
// tell use a subfolder in the newly provisioned PVC to store postgres DB
// a newly provisioned ext4 PVC will be non-empty, so postgres fails to start if we don't use a subfolder
{name: "database", mountPath: "/mnt/database", subPath: "postgres"},
{name: "segments", mountPath: "/mnt/wubloader"}
],
},
],
volumes: [
{
name: "segments",
persistentVolumeClaim: {"claimName": "mnt-wubloader"},
},
],
},
},
volumeClaimTemplates: [
{
metadata: {
name: "database"
},
spec: {
accessModes: ["ReadWriteOnce"],
resources: {
requests: {
storage: "50GiB"
},
},
storageClassName: $.config.sts_storage_class_name
},
},
],
},
},
// The actual manifests to output, filtering out "null" from disabled components.
items: [comp for comp in $.components if comp != null],
// These are all the deployments and services.
// Note that all components work fine if multiple are running
// (they may duplicate work, but not cause errors by stepping on each others' toes).
components:: [
// The downloader watches the twitch stream and writes the HLS segments to disk
if $.config.enabled.downloader then $.deployment("downloader", args=$.config.channels + [
"--base-dir", "/mnt",
"--qualities", std.join(",", $.config.qualities),
"--backdoor-port", std.toString($.config.backdoor_port),
"--metrics-port", "80",
]),
// The restreamer is a http server that fields requests for checking what segments exist
// and allows HLS streaming of segments from any requested timestamp
if $.config.enabled.restreamer then $.deployment("restreamer", args=[
"--base-dir", "/mnt",
"--backdoor-port", std.toString($.config.backdoor_port),
"--port", "80",
]),
// The backfiller periodically compares what segments exist locally to what exists on
// other nodes. If it finds ones it doesn't have, it downloads them.
// It can talk to the database to discover other wubloader nodes, or be given a static list.
if $.config.enabled.backfiller then $.deployment("backfiller", args=$.clean_channels + [
"--base-dir", "/mnt",
"--qualities", std.join(",", $.config.qualities),
"--static-nodes", std.join(",", $.config.peers),
"--backdoor-port", std.toString($.config.backdoor_port),
"--node-database", $.db_connect,
"--localhost", $.config.localhost,
"--metrics-port", "80",
] + (if $.config.backfill_max_hours_ago == null then [] else [
"--start", std.toString($.config.backfill_max_hours_ago),
])),
// Segment coverage is a monitoring helper that periodically scans available segments
// and reports stats. It also creates a "coverage map" image to represent this info.
// It puts this in the segment directory where nginx will serve it.
if $.config.enabled.segment_coverage then $.deployment("segment-coverage", args=$.clean_channels + [
"--base-dir", "/mnt",
"--qualities", std.join(",", $.config.qualities),
"--metrics-port", "80",
"--first-hour", $.config.coverage_start,
"--last-hour", $.config.coverage_end,
]),
// Thrimshim acts as an interface between the thrimbletrimmer editor and the database
// It is needed for thrimbletrimmer to be able to get unedited videos and submit edits
if $.config.enabled.thrimshim then $.deployment("thrimshim", args=[
"--port", "80",
"--backdoor-port", std.toString($.config.backdoor_port),
"--title-header", $.config.title_header,
"--description-footer", $.config.description_footer,
"--upload-locations", std.join(",", [$.config.default_location] + [
location for location in std.objectFields($.config.cutter_config)
if location != $.config.default_location
]),
$.db_connect,
$.clean_channels[0], // use first element as default channel
$.config.bustime_start,
]),
// Cutter interacts with the database to perform cutting jobs
if $.config.enabled.cutter then $.deployment("cutter",
args=[
"--base-dir", "/mnt",
"--backdoor-port", std.toString($.config.backdoor_port),
"--metrics-port", "80",
"--name", $.config.localhost,
"--tags", std.join(",", $.config.video_tags),
$.db_connect,
std.manifestJson($.config.cutter_config),
"/etc/creds/cutter_creds.json"
],
volumes=[
{name:"wubloader-creds", secret: {secretname: "wubloader-creds"}}
],
volumeMounts=[
{mountPath: "/etc/creds", name: "wubloader-creds"},
]),
// Sheetsync syncs database columns to the google docs sheet which is the primary operator interface
if $.config.enabled.sheetsync then $.deployment("sheetsync",
args=[
"--allocate-ids",
"--backdoor-port", std.toString($.config.backdoor_port),
"--metrics-port", "80",
$.config.db_connect,
"/etc/creds/sheetsync_creds.json",
$.config.edit_url,
$.config.bustime_start,
$.config.sheet_id
] + $.config.worksheets,
volumes=[
{name:"wubloader-creds", secret: {secretname: "wubloader-creds"}}
],
volumeMounts=[
{mountPath: "/etc/creds", name: "wubloader-creds"},
]),
// playlist_manager adds videos to youtube playlists depending on tags
if $.config.enabled.playlist_manager then $.deployment("playlist-manager",
args=[
"--backdoor-port", std.toString($.config.backdoor_port),
"--metrics-port", "80",
"--upload-location-allowlist", std.join(",", $.youtube_upload_locations),
$.config.db_connect,
"/etc/creds/cutter_creds.json"
] + [
"%s=%s" % [playlist, std.join(",", $.playlists[playlist])]
for playlist in std.objectFields($.playlists)
],
volumes=[
{name:"wubloader-creds", secret: {secretname: "wubloader-creds"}}
],
volumeMounts=[
{mountPath: "/etc/creds", name: "wubloader-creds"},
]),
// Normally nginx would be responsible for proxying requests to different services,
// but in k8s we can use Ingress to do that. However nginx is still needed to serve
// static content - segments as well as thrimbletrimmer.
if $.config.enabled.nginx then $.deployment("nginx", env=[
{name: "THRIMBLETRIMMER", value: "true"},
{name: "SEGMENTS", value: "/mnt"},
]),
// postgres statefulset
if $.config.enabled.postgres then $.statefulset("postgres",
args=if $.config.db_standby then ["/standby_setup.sh"] else [],
env=[
{name: "POSTGRES_USER", value: $.config.db_super_user},
{name: "POSTGRES_PASSWORD", value: $.config.db_super_password},
{name: "POSTGRES_DB", value: $.config.db_args.dbname},
{name: "PGDATA", value: "/mnt/database"},
{name: "WUBLOADER_USER", value: $.config.db_args.user},
{name: "WUBLOADER_PASSWORD", value: $.config.db_args.password},
{name: "REPLICATION_USER", value: $.config.db_replication_user},
{name: "REPLICATION_PASSWORD", value: $.config.db_replication_password},
{name: "READONLY_USER", value: $.config.db_readonly_user},
{name: "READONLY_PASSWORD", value: $.config.db_readonly_password},
{name: "MASTER_NODE", value: $.config.db_args.host},
]),
// Services for all deployments
if $.config.enabled.downloader then $.service("downloader"),
if $.config.enabled.backfiller then $.service("backfiller"),
if $.config.enabled.nginx then $.service("nginx"),
if $.config.enabled.restreamer then $.service("restreamer"),
if $.config.enabled.segment_coverage then $.service("segment-coverage"),
if $.config.enabled.thrimshim then $.service("thrimshim"),
if $.config.enabled.cutter then $.service("cutter"),
if $.config.enabled.playlist_manager then $.service("playlist-manager"),
if $.config.enabled.sheetsync then $.service("sheetsync"),
if $.config.enabled.postgres then $.service("postgres"),
// Secret for cutter_creds_file and sheetsync_creds_file
{
apiVersion: "v1",
kind: "Secret",
metadata: {
name: "wubloader-creds",
labels: {app: "wubloader"}
},
type: "Opaque",
stringData: {
"cutter_creds.json": std.toString($.config.cutter_creds),
"sheetsync_creds.json": std.toString($.config.sheetsync_creds)
},
},
// PV manifest for segments
{
apiVersion: "v1",
kind: "PersistentVolume",
metadata: {
name: "mnt-wubloader",
labels: {app: "wubloader"},
},
spec: {
accessModes: ["ReadWriteMany"],
capacity: {
storage: $.config.nfs_capacity
},
mountOptions: ["fsc"],
nfs: {
server: $.config.nfs_server,
path: $.config.nfs_path,
readOnly: false
},
persistentVolumeReclaimPolicy: "Retain",
volumeMode: "Filesystem"
},
},
// PVC manifest for segments
{
apiVersion: "v1",
kind: "PersistentVolumeClaim",
metadata: {
name: "mnt-wubloader",
labels: {app: "wubloader"},
},
spec: {
accessModes: ["ReadWriteMany"],
resources: {
requests: {
storage: $.config.nfs_capacity
},
},
volumeName: "mnt-wubloader"
},
},
// Ingress to direct requests to the correct services.
{
kind: "Ingress",
apiVersion: "networking.k8s.io/v1",
metadata: {
name: "wubloader",
labels: {app: "wubloader"} + $.config.ingress_labels,
},
spec: {
ingressClassName: $.config.ingress_class_name,
rules: [
{
host: $.config.ingress_host,
http: {
// Helper functions for defining the path rules below
local rule(name, path, type) = {
path: path,
pathType: type,
backend: {
service: {
name: "wubloader-%s" % std.strReplace(name, "_", "-"),
port: {
number: 80
},
},
},
},
local metric_rule(name) = rule(name, "/metrics/%s" % name, "Exact"),
paths: [
// Map /metrics/NAME to each service
metric_rule("downloader"),
metric_rule("backfiller"),
metric_rule("restreamer"),
metric_rule("segment_coverage"),
metric_rule("thrimshim"),
metric_rule("cutter"),
metric_rule("sheetsync"),
metric_rule("playlist_manager"),
// Map /segments and /thrimbletrimmer to the static content nginx
rule("nginx", "/segments", "Prefix"),
rule("nginx", "/thrimbletrimmer", "Prefix"),
// Map /thrimshim to the thrimshim service
rule("thrimshim", "/thrimshim", "Prefix"),
// Map everything else to restreamer
rule("restreamer", "/", "Prefix"),
],
},
},
],
[if $.config.ingress_tls then 'tls']: [
{
hosts: [
$.config.ingress_host,
],
[if "ingress_secret_name" in $.config then 'secretName']: $.config.ingress_secret_name,
},
],
},
},
],
}