# Scale the whole chart down without uninstalling it: scaleDown: true renders # every Deployment/StatefulSet with replicas: 0 (and suspends CronJobs) and # takes precedence over any per-workload replicas value. PVCs, Secrets and # Services stay in place; scaleDown: false brings the workloads back up. scaleDown: false secrets: # op:// item path for the 1Password operator. Only needs to carry a # "curseforge-api-key" key when curseforge.enabled is true and an # "rcon-password" key when server.rcon.enabled is true. # # Documented limit (chart 3.0.0): changing this path rolls the pod (the # StatefulSet hashes the rendered OnePasswordItem into checksum/secret-ref), # but changing the item's CONTENT in the vault does not. The operator updates # the Kubernetes Secret, while the running pod keeps the values it read at # startup - the keys are consumed as environment variables, which Kubernetes # never refreshes in a running container. # # The operator's own "operator.1password.io/auto-restart: true" annotation # does NOT close this gap here, and is therefore deliberately not set: it only # restarts Deployments. Verified in the operator source (main, 9c3b1b9, # 2026-08-11): restartWorkloadsWithUpdatedSecrets lists nothing but # appsv1.DeploymentList, and getPodTemplate has a single case for # *appsv1.Deployment and returns "unsupported type" for everything else. This # chart is a StatefulSet, so the annotation would do nothing while suggesting # the opposite. # # So after rotating rcon-password or curseforge-api-key in the vault, restart # the workload by hand (kubectl rollout restart statefulset/...) - and expect # the full startup cost of ~124 s measured for ftb-skies on Longhorn. minecraftServerRef: null server: # Replica count for this workload; 0 is allowed and scales it down. # The chart-global scaleDown flag takes precedence. replicas: 1 # Port the Minecraft server listens on inside the container. It is passed to # the image as SERVER_PORT, used as the containerPort and as the Service's # target, and the probes go through the image's mc-health script, which reads # SERVER_PORT too - so an override stays consistent everywhere. port: 25565 service: # ClusterIP is the default because routing to these servers is done by the # static mappings of the minecraft-router chart, which reaches the server # over its in-cluster DNS name. Set NodePort to expose the server directly # on a node port instead (then outwardPort applies). # NOTE: before chart 1.0.0 this was implied by "mcRouterIntegration.enabled", # which also added a misleading mc-router auto-discovery annotation. The # annotation is gone; only the service type remains, now named for what it # actually does. type: ClusterIP # Port the Service exposes in the cluster. port: 25565 # Node port used only when type is NodePort. Must be inside the cluster's # node-port range (30000-32767 by default). outwardPort: 30565 # The \u00A7 sequences are Java-properties escapes for the Minecraft colour # code character and must stay literal backslash sequences - server.properties # is a Java properties file and unescapes them itself. motd: 'Running \u00A72\u00A7o%MODPACK_NAME% \u00A70version \u00A7r%env:MODPACK_VERSION%' rcon: # RCON is off by default. Only when this is true does the chart set # ENABLE_RCON, expose the RCON container port and wire RCON_PASSWORD from # the secret - before chart 1.0.0 the password was pulled from the secret # unconditionally although RCON was hardcoded off, which made the secret # key mandatory for a switched-off feature. enabled: false port: 25575 # Init container that downloads and unpacks a CurseForge server pack; only # used when curseforgeServerpack.enabled is true. Pinned per repo convention # (auxiliary images are never unpinned): before chart 1.0.0 this was a bare # "alpine", i.e. an implicit :latest from Docker Hub. initImage: alpine:3.22 resources: # Limits are optional: memory and ephemeral-storage limits default to # limitFactor x the request, an explicitly set limit always wins, and a # CPU limit is only set when configured explicitly under "limits" # (CPU is compressible - throttling is preferable to an OOM kill). limitFactor: 3 requests: cpu: "2" ephemeral-storage: "100Mi" # Deliberately unset: when no memory request is given, the chart derives # it from minecraft.resources.memory (the JVM heap) so that the heap and # the container's memory request/limit can never drift apart. With the # default heap of 4G this yields a 4Gi request and, via limitFactor 3, a # 12Gi limit - exactly the values that were hardcoded before chart 1.0.0. # Set it explicitly to decouple the two. memory: null # Extra environment variables for the server container, appended to the ones # the chart always sets. Values are rendered through tpl and support the value, # secretKeyRef and configMapKeyRef forms: # - name: SOME_ENV # value: "{{ .Release.Name }}" # - name: FROM_SECRET # valueFrom: # secretKeyRef: # name: "some-secret" # key: "someKey" # - name: FROM_CONFIGMAP # valueFrom: # configMapKeyRef: # name: "some-configmap" # key: "someKey" env: [] # All three probes run the image's own mc-health script, which performs a real # Minecraft server-list ping against SERVER_PORT via mc-monitor - so "Ready" # means the server answers players, not merely that the container process is # alive. (Before chart 1.0.0 this chart had no probes at all, which is why a # pod counted as Ready the moment the container started.) livenessProbe: exec: command: ["mc-health"] periodSeconds: 30 timeoutSeconds: 10 failureThreshold: 3 readinessProbe: exec: command: ["mc-health"] periodSeconds: 15 timeoutSeconds: 10 failureThreshold: 3 # The startup probe gates liveness and readiness, so its budget has to cover # the slowest legitimate start: on a fresh volume the image downloads the # server jar and, for FTB/CurseForge modpacks, the whole modpack before the # world even begins to load. Budget 15s * 80 = 20 minutes; the liveness probe # only starts counting afterwards, so a slow start can no longer be killed. startupProbe: exec: command: ["mc-health"] periodSeconds: 15 timeoutSeconds: 10 failureThreshold: 80 securityContext: pod: runAsNonRoot: true # uid/gid 1000 is the image's "minecraft" user. The image's entrypoint # normally starts as root and drops to this user via gosu; starting as the # user directly makes it take the non-root branch, which additionally skips # the entrypoint's recursive chown of /data and its write to # /etc/nsswitch.conf - the latter would fail on a read-only root filesystem. runAsUser: 1000 runAsGroup: 1000 # fsGroup keeps the world volume writable for the minecraft user. # OnRootMismatch (instead of Always) avoids a recursive chown of the whole # world on every single pod start - on a 32Gi world that is minutes of # startup time. It still runs once if the volume root does not already # carry the group. fsGroup: 1000 fsGroupChangePolicy: OnRootMismatch container: allowPrivilegeEscalation: false # Works because the chart mounts an emptyDir at /tmp - the image writes the # server-icon scratch file and mc-server-runner's console named pipe there. # Everything else the server writes goes to the PVC at /data. readOnlyRootFilesystem: true runAsNonRoot: true capabilities: drop: - ALL add: [] minecraft: # Valid values are: peaceful, easy, normal, and hard difficulty: "easy" whitelist: # Boolean, wired to the image's ENABLE_WHITELIST in BOTH positions since # chart 2.0.0 - which is what makes "false" actually switch the whitelist # off. server.properties lives on the PVC, so before 2.0.0 a release that # had once written white-list=true kept it forever: the chart only ever # emitted whitelist variables while enabled was true and had no way to say # "off". Now enabled: false emits ENABLE_WHITELIST=false, and the image # rewrites white-list=false into the existing file. # # >>> enabled: true WITHOUT players locks the server down completely. <<< # That is the image's own semantics and it is intended: white-list=true with # an empty whitelist.json means nobody can join - not even the ops. Set # players whenever this is turned on, or leave it at false. # # The default is false, matching both the image and vanilla Minecraft, which # start with white-list=false. (Before chart 2.0.0 the default was true with # players: null; that combination did nothing back then, because an empty # WHITELIST never enabled anything - under the new semantics it would be a # locked-out server, so the default is flipped.) enabled: false # How the image treats an ALREADY EXISTING whitelist.json on the volume: # SKIP leaves it alone, MERGE adds players to it, SYNCHRONIZE makes it match # players exactly (removing everyone else). Only applies while enabled. overridePolicy: "MERGE" # Comma-separated List of Players. Only passed to the image (as WHITELIST) # while enabled is true - a non-empty WHITELIST turns the whitelist on in # the image regardless of ENABLE_WHITELIST, so leaving it out is what keeps # enabled: false switched off even for a release that still lists players. players: null management: # Comma-separated List of Players. The image resolves every name against # the external Playerdb API and aborts startup if one does not resolve. opPlayers: null maxPlayers: 10 forceGameMode: true # Valid values are: creative, survival, adventure, spectator (only for Minecraft 1.8 or later) gameMode: survival worldSaveName: world serverName: mc-server resources: storage: "32Gi" # Storage class of the world PVC. Was hardcoded to "longhorn" before chart # 1.0.0. Changing it on an existing release has no effect on the already # bound volume - storageClassName is immutable once the PVC exists. storageClassName: longhorn # JVM heap in gigabytes (passed to the image as MEMORY). Also drives the # container's memory request/limit unless server.resources.requests.memory # is set explicitly. memory: "4" # Minecraft version to run. Pinned rather than "LATEST", which would silently # drift to a new release on every restart. # This value must match the Java line of the chart version: the image tag # comes from .Chart.AppVersion, so the JVM is fixed per published chart # version. Java 8 runs Minecraft up to 1.16.5, 1.18-1.20.4 need Java 17 and # 1.20.5+ need Java 21. This chart publishes appVersion "2026.8.2-java8". version: "1.12.2" # curseforge, ftb and curseforgeServerpack are mutually exclusive - enabling # more than one is rejected by the chart (before 1.0.0 it silently rendered a # duplicate TYPE env entry and the last one won). curseforge: enabled: false forceReload: false modpack: slug: null versionId: null exclude: null excludeOverride: null include: null ftb: enabled: false modpackId: null versionId: null curseforgeServerpack: enabled: false # Both values below are rendered into the init.sh ConfigMap. Since chart 3.0.0 # a change here rolls the pod (checksum/config on the StatefulSet), which is # what makes it take effect at all - init.sh is mounted with subPath and only # read at pod start. The restart is not free: ~124 s measured for ftb-skies on # Longhorn. downloadUrl: null workingDirectory: '/data/serverpack'