GZCTF Helm Chart

This is a Helm chart for deploying GZCTF on Kubernetes. It deploys the official GZCTF Docker image. Optional HA/Autoscaling (experimental) + postgresql or postgresql-ha + Garnet or redis-ha + RustFS S3. Also supports using external Postgresql/Redis/S3.

Add the helm repo

helm repo add gzctf https://gzctf.github.io/helm

Install (Quick start)

This installs a single-node gzctf with ReadWriteOnce PVC and a single replica of postgresql (statefulset). appsettings has the default configurations

helm install gzctf gzctf/gzctf \
--set env[0].name=GZCTF_ADMIN_PASSWORD \
--set env[0].value=xxx

Install with custom values.yaml

If you need to install garnet or redis-ha and/or postgresql-ha and/or RustFS. Also if you need to set passwords/xorkey

helm install gzctf gzctf/gzctf -f values.yaml

Install from source

Build helm dependencies before installing the chart.

helm dependency update

Set the values in values.yaml to your desired configuration. Then install

helm install release-name . -f values.yaml --create-namespace --namespace gzctf

Uninstall

helm uninstall release-name --namespace gzctf

Important Notes

• multi-node deployment is still experimental (needs extensive testing)
• gzctf support for s3 bucket is experimental (single-node deployment doesnt need s3 bucket)
• garnet/redis is not needed for single-node deployment
• minio stopped releasing community edition binaries and docker images minio/minio/issues/21647 We replaced it with RustFS instead.
• postgresql-ha bitnami image is legacy/deprecated

Values examples

Deploy Postgresql + Garnet + RustFS

gzctf:
image:
tag: "latest"appsettings: | { "AllowedHosts": "*", "ConnectionStrings": { "Database": "Host=gzctf-db:5432;Database=gzctf;Username=postgres;Password=gzctf", "RedisCache": "gzctf-garnet:6379,password=gzctf", "Storage": "minio.s3://accessKey=...;secretKey=...;bucket=...;endpoint=...;forcePathStyle=true" }, ... } # content of appsettings.jsonenv:
- name: LC_ALLvalue: "en_US.UTF-8"
- name: GZCTF_ADMIN_PASSWORDvalue: "astrongpassword"autoscaling:
enabled: false # (set to true for multi-node. still experimental)minReplicas: 2maxReplicas: 5targetCPUUtilizationPercentage: 80targetMemoryUtilizationPercentage: 80garnet:
enabled: trueconfig:
garnetConf: | { "AuthenticationMode": "Password", "Password": "gzctf" # needs to be consistent with the RedisCache password in appsettings.json }redis-ha:
enabled: false # (Can be enabled instead of garnet. Configure your appsettings to connect to release-name-redis-ha-haproxy )postgresql:
enabled: trueenv:
- name: POSTGRES_PASSWORDvalue: gzctf # needs to be consistent with the database password in appsettings.jsonpersistence:
enabled: truesize: 2Girustfs:
enabled: truesecret:
rustfs:
access_key: "gzctf"secret_key: "gzctf"# needs to be consistent with the storage configurations in appsettings.jsonstorageclass:
dataStorageSize: 10Gi

Configure your own external DB/Redis/S3

GZCTF:
image:
tag: "latest"appsettings: | { "AllowedHosts": "*", "ConnectionStrings": { "Database": "Host=...;Database=...;Username=...;Password=...", "RedisCache": "...,password=...", "Storage": "minio.s3://accessKey=...;secretKey=...;bucket=...;endpoint=...;forcePathStyle=true" }, ... } # content of appsettings.jsonpostgresql:
enabled: falsegarnet:
enabled: falserustfs:
enabled: false

Requirements

Repository	Name	Version
https://charts.bitnami.com/bitnami	postgresql-ha	16.3.2
https://dandydeveloper.github.io/charts	redis-ha	4.33.7
https://rustfs.github.io/helm	rustfs	0.2.0
oci://ghcr.io/microsoft/helm-charts	garnet	0.2.2

Values

Key	Type	Default	Description
extraObjects	list	[]	Additional Kubernetes manifests to deploy with this Helm chart
garnet.config.existingSecret	string	""	Garnet secret (if you want to use an existing secret). This secret must contains a key called 'garnet.conf'.
garnet.config.garnetConf	string	"{\n \"AuthenticationMode\": \"Password\",\n \"Password\": \"gzctf\"\n}\n"	The garnet.conf data content.
garnet.enabled	bool	false	Enable Microsoft Garnet cache-store deployment
garnet.image	object	{"registry":"ghcr.io","repostiory":"microsoft/garnet","tag":""}	Garnet container image configuration
garnet.image.registry	string	"ghcr.io"	Garnet image registry
garnet.image.repostiory	string	"microsoft/garnet"	Garnet image repository
garnet.image.tag	string	""	Garnet image tag (empty string uses chart appVersion)
garnet.persistence	object	Disabled (persistence not needed for cache)	Persistent storage configuration for Garnet
garnet.persistence.enabled	bool	false	Enable persistent storage for Garnet (not recommended for cache workloads)
gzctf.affinity	object	{}	Affinity rules for GZCTF pod scheduling
gzctf.appsettings	string	See values.yaml for full configuration	GZCTF application settings (appsettings.json content)
gzctf.autoscaling.enabled	bool	false	Enable autoscaling
gzctf.autoscaling.maxReplicas	int	100	Maximum number of replicas
gzctf.autoscaling.minReplicas	int	1	Minimum number of replicas
gzctf.autoscaling.targetCPUUtilizationPercentage	int	80	Target CPU utilization percentage
gzctf.autoscaling.targetMemoryUtilizationPercentage	int	80	Target memory utilization percentage
gzctf.clusterRole.create	bool	true	Create ClusterRole for GZCTF (required for Kubernetes challenge container management)
gzctf.clusterRole.rules	list	[{"apiGroups":["*"],"resources":["*"],"verbs":["*"]},{"nonResourceURLs":["*"],"verbs":["*"]}]	ClusterRole rules (full cluster access for managing challenge containers)
gzctf.env	list	[{"name":"GZCTF_ADMIN_PASSWORD","value":"xxx"},{"name":"LC_ALL","value":"en_US.UTF-8"}]	Environment variables for GZCTF container
gzctf.env[0]	object	{"name":"GZCTF_ADMIN_PASSWORD","value":"xxx"}	Initial admin password for GZCTF
gzctf.env[1]	object	{"name":"LC_ALL","value":"en_US.UTF-8"}	Locale configuration
gzctf.fullnameOverride	string	""	Override the full name of the chart
gzctf.image	object	{"pullPolicy":"Always","repository":"ghcr.io/gztimewalker/gzctf/gzctf","tag":"v1.8.5"}	GZCTF container image configuration
gzctf.image.pullPolicy	string	"Always"	Image pull policy
gzctf.image.repository	string	"ghcr.io/gztimewalker/gzctf/gzctf"	GZCTF image repository
gzctf.image.tag	string	"v1.8.5"	GZCTF image tag
gzctf.imagePullSecrets	list	[]	Image pull secrets for private container registries
gzctf.ingress.annotations	object	{"traefik.ingress.kubernetes.io/service.sticky.cookie":"true","traefik.ingress.kubernetes.io/service.sticky.cookie.httponly":"true","traefik.ingress.kubernetes.io/service.sticky.cookie.name":"LB_Session"}	Annotations for ingress resource
gzctf.ingress.className	string	""	Ingress class name
gzctf.ingress.enabled	bool	true	Enable ingress for GZCTF
gzctf.ingress.hosts	list	[{"host":"gctf.example.com","paths":[{"path":"/","pathType":"Prefix"}]}]	Ingress hosts configuration
gzctf.ingress.tls	list	[]	TLS configuration for ingress
gzctf.livenessProbe	object	{"httpGet":{"path":"/healthz","port":"metrics"}}	Liveness probe configuration
gzctf.metrics.enabled	bool	true	Enable metrics port
gzctf.metrics.port	int	3000	Metrics port number
gzctf.nameOverride	string	""	Override the name of the chart
gzctf.nodeSelector	object	{}	Node labels for GZCTF pod assignment
gzctf.podAnnotations	object	{}	Annotations to add to GZCTF pods
gzctf.podLabels	object	{}	Labels to add to GZCTF pods
gzctf.podSecurityContext	object	{}	Security context for GZCTF pod
gzctf.pvc.accessMode	string	"ReadWriteOnce"	Access mode for the PVC (use ReadWriteMany when deploying multiple instances)
gzctf.pvc.create	bool	true	Create a PVC for GZCTF
gzctf.pvc.size	string	"2Gi"	Size of the PVC
gzctf.pvc.storageClassName	string	"standard"	Storage class name for the PVC (empty string uses cluster default)
gzctf.readinessProbe	object	{"httpGet":{"path":"/healthz","port":"metrics"}}	Readiness probe configuration
gzctf.replicaCount	int	1	Number of GZCTF replicas (Set to >1 for multi-node. Needs requirements)
gzctf.resources	object	{"requests":{"cpu":"1000m","memory":"384Mi"}}	Resource requests and limits for GZCTF container
gzctf.resources.requests	object	{"cpu":"1000m","memory":"384Mi"}	Resource requests
gzctf.resources.requests.cpu	string	"1000m"	CPU request
gzctf.resources.requests.memory	string	"384Mi"	Memory request
gzctf.securityContext	object	{}	Security context for GZCTF container
gzctf.service	object	{"annotations":{},"port":8080,"type":"ClusterIP"}	GZCTF service configuration
gzctf.service.annotations	object	{}	Annotations to add to the service
gzctf.service.port	int	8080	Service port
gzctf.service.type	string	"ClusterIP"	Service type
gzctf.serviceAccount	object	{"annotations":{},"automount":true,"create":true,"name":""}	ServiceAccount configuration for GZCTF
gzctf.serviceAccount.annotations	object	{}	Annotations to add to the ServiceAccount
gzctf.serviceAccount.automount	bool	true	Automatically mount ServiceAccount token
gzctf.serviceAccount.create	bool	true	Create a ServiceAccount for GZCTF
gzctf.serviceAccount.name	string	""	ServiceAccount name (generated from chart fullname if not set)
gzctf.strategyType	string	"RollingUpdate"	Deployment strategy type
gzctf.tolerations	list	[]	Tolerations for GZCTF pod scheduling
gzctf.volumeMounts	list	[]	Additional volume mounts for GZCTF container
gzctf.volumes	list	[]	Additional volumes for GZCTF pod
postgresql-ha.enabled	bool	false	Enable or disable PostgreSQL HA deployment (THIS USES BITNAMI LEGACY IMAGES BY DEFAULT WHICH NO LONGER RECIEVE RPOPER SECURITY UPDATES)
postgresql-ha.metrics.enabled	bool	false	postgresql exporter enable
postgresql-ha.metrics.image.registry	string	"docker.io"	postgres-exporter image registry
postgresql-ha.metrics.image.repository	string	"bitnamilegacy/postgres-exporter"	postgres-exporter image repository
postgresql-ha.metrics.image.tag	string	"0.17.1-debian-12-r16"	postgres-exporter image tag
postgresql-ha.persistence.accessMode	string	"ReadWriteOnce"	Volume access mode
postgresql-ha.persistence.enabled	bool	true	Enable persistent volume for database storage
postgresql-ha.persistence.size	string	"2Gi"	Persistent volume size
postgresql-ha.persistence.storageClass	string	""	Storage class name (empty string uses cluster default)
postgresql-ha.pgpool.image.registry	string	"docker.io"	pgpool image registry
postgresql-ha.pgpool.image.repository	string	"bitnamilegacy/pgpool"	pgpool image repository
postgresql-ha.pgpool.image.tag	string	"4.6.3-debian-12-r0"	pgpool image tag
postgresql-ha.postgresql.database	string	"gzctf"	Default database name to create
postgresql-ha.postgresql.image.registry	string	"docker.io"	Docker registry for PostgreSQL image
postgresql-ha.postgresql.image.repository	string	"bitnamilegacy/postgresql-repmgr"	PostgreSQL repository (bitnamilegacy repmgr version)
postgresql-ha.postgresql.image.tag	string	"17.6.0-debian-12-r2"	PostgreSQL image tag (version 17.6.0)
postgresql-ha.postgresql.password	string	"gzctf"	PostgreSQL superuser password (should be overridden or use secrets)
postgresql-ha.postgresql.username	string	"postgres"	PostgreSQL superuser username
postgresql-ha.volumePermissions.enabled	bool	true	Enable init container to set proper volume permissions
postgresql-ha.volumePermissions.image.registry	string	"docker.io"	volume-permissions image registry
postgresql-ha.volumePermissions.image.repository	string	"bitnamilegacy/os-shell"	volume-permissions image repository
postgresql-ha.volumePermissions.image.tag	string	"12-debian-12-r51"	volume-permissions image tag
postgresql.affinity	object	{}	Affinity rules for PostgreSQL pod scheduling
postgresql.enabled	bool	true	Enable PostgreSQL deployment
postgresql.env	list	[{"name":"POSTGRES_PASSWORD","value":"gzctf"}]	Environment variables for PostgreSQL container
postgresql.env[0]	object	Must match the database password in appsettings.json	PostgreSQL password environment variable
postgresql.image	object	{"imagePullSecrets":[],"pullPolicy":"IfNotPresent","registry":"docker.io","repository":"postgres","tag":"16-alpine"}	PostgreSQL image configuration
postgresql.image.imagePullSecrets	list	[]	Image pull secrets for private registries
postgresql.image.pullPolicy	string	"IfNotPresent"	Image pull policy
postgresql.image.registry	string	"docker.io"	Docker registry for PostgreSQL image
postgresql.image.repository	string	"postgres"	PostgreSQL image repository
postgresql.image.tag	string	"16-alpine"	PostgreSQL image tag
postgresql.livenessProbe	object	{}	Liveness probe configuration for PostgreSQL container
postgresql.nodeSelector	object	{}	Node labels for PostgreSQL pod assignment
postgresql.persistence.accessMode	string	"ReadWriteOnce"	Access mode for the persistent volume
postgresql.persistence.enabled	bool	true	Enable persistent storage for PostgreSQL
postgresql.persistence.size	string	"2Gi"	Size of the persistent volume
postgresql.persistence.storageClassName	string	""	Storage class name for persistent volume (empty string uses cluster default)
postgresql.podAnnotations	object	{}	Annotations to add to PostgreSQL pods
postgresql.podLabels	object	{}
postgresql.podSecurityContext	object	{}	Security context for PostgreSQL pod
postgresql.readinessProbe	object	{}	Readiness probe configuration for PostgreSQL container
postgresql.resources	object	{"requests":{"cpu":"500m","memory":"512Mi"}}	Resource requests and limits for PostgreSQL container
postgresql.resources.requests	object	{"cpu":"500m","memory":"512Mi"}	Resource requests
postgresql.resources.requests.cpu	string	"500m"	CPU request
postgresql.resources.requests.memory	string	"512Mi"	Memory request
postgresql.securityContext	object	{}	Security context for PostgreSQL container
postgresql.service	object	{"port":5432}	PostgreSQL service configuration
postgresql.service.port	int	5432	PostgreSQL service port
postgresql.tolerations	list	[]	Tolerations for PostgreSQL pod scheduling
postgresql.volumeMounts	list	[]	Additional volume mounts for PostgreSQL container
postgresql.volumes	list	[]	Additional volumes for PostgreSQL pod
redis-ha.additionalAffinities	object	{}	Additional affinities to add to the Redis server pods.
redis-ha.affinity	string	""	Assign custom [affinity] rules to the Redis pods.
redis-ha.auth	bool	true	Configures redis-ha with AUTH
redis-ha.containerSecurityContext	object	See [values.yaml]	Redis HA statefulset container-level security context
redis-ha.enabled	bool	false	Deploys a High-Availability Redis cluster
redis-ha.exporter.enabled	bool	false	Enable Prometheus redis-exporter sidecar
redis-ha.exporter.image	string	"ghcr.io/oliver006/redis_exporter"	Repository to use for the redis-exporter
redis-ha.exporter.tag	string	"v1.78.0"	Tag to use for the redis-exporter
redis-ha.haproxy.additionalAffinities	object	{}	Additional affinities to add to the haproxy pods.
redis-ha.haproxy.affinity	string	""	Assign custom [affinity] rules to the haproxy pods.
redis-ha.haproxy.containerSecurityContext	object	See [values.yaml]	HAProxy container-level security context
redis-ha.haproxy.enabled	bool	true	Enabled HAProxy LoadBalancing/Proxy
redis-ha.haproxy.hardAntiAffinity	bool	true	Whether the haproxy pods should be forced to run on separate nodes.
redis-ha.haproxy.labels	object	{"app.kubernetes.io/name":"gzctf-redis-ha-haproxy"}	Custom labels for the haproxy pod.
redis-ha.haproxy.metrics.enabled	bool	true	HAProxy enable prometheus metric scraping
redis-ha.haproxy.tolerations	list	[]	[Tolerations] for use with node taints for haproxy pods.
redis-ha.hardAntiAffinity	bool	true	Whether the Redis server pods should be forced to run on separate nodes.
redis-ha.image.repository	string	"public.ecr.aws/docker/library/redis"	Redis repository
redis-ha.image.tag	string	"7.2.11-alpine"	Redis tag
redis-ha.persistentVolume.enabled	bool	false	Configures persistence on Redis nodes
redis-ha.redis.config	object	See [values.yaml]	Any valid redis config options in this section will be applied to each server (see redis-ha chart)
redis-ha.redis.config.save	string	'""'	Will save the DB if both the given number of seconds and the given number of write operations against the DB occurred. "" is disabled
redis-ha.redis.masterGroupName	string	"gzctf"	Redis convention for naming the cluster group: must match ^[\\w-\\.]+$ and can be templated
redis-ha.redisPassword	string	"gzctf"	A password that configures a requirepass and masterauth in the conf parameters (Requires auth: enabled)
redis-ha.tolerations	list	[]	[Tolerations] for use with node taints for Redis pods.
redis-ha.topologySpreadConstraints	object	{"enabled":false,"maxSkew":"","topologyKey":"","whenUnsatisfiable":""}	Assign custom [TopologySpreadConstraints] rules to the Redis pods. # https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/
redis-ha.topologySpreadConstraints.enabled	bool	false	Enable Redis HA topology spread constraints
redis-ha.topologySpreadConstraints.maxSkew	string	"" (defaults to 1)	Max skew of pods tolerated
redis-ha.topologySpreadConstraints.topologyKey	string	"" (defaults to topology.kubernetes.io/zone)	Topology key for spread
redis-ha.topologySpreadConstraints.whenUnsatisfiable	string	"" (defaults to ScheduleAnyway)	Enforcement policy, hard or soft
rustfs.enabled	bool	false	Enable RustFS deployment (set to false if you want to use an external S3 bucket)
rustfs.mode	object	{"distributed":{"enabled":false},"standalone":{"enabled":true}}	RustFS mode configuration
rustfs.mode.distributed	object	{"enabled":false}	Distributed mode configuration
rustfs.mode.standalone	object	{"enabled":true}	Standalone mode configuration
rustfs.secret	object	{"rustfs":{"access_key":"","secret_key":""}}	RustFS secret configuration
rustfs.secret.rustfs	object	{"access_key":"","secret_key":""}	RustFS secret name
rustfs.secret.rustfs.access_key	string	""	RustFS access key
rustfs.secret.rustfs.secret_key	string	""	RustFS secret key
rustfs.storageclass	object	{"dataStorageSize":"10Gi"}	RustFS storage class configuration
rustfs.storageclass.dataStorageSize	string	"10Gi"	Data storage size

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