Spin a local database with Kubernetes and Rancher - kubernetes

Question

How do you change the cockroachdb YAML configuration from Rancher catalog that it will just
Use local disk (testing on a local computer)
Just use 1GB of disk space (should be enough for testing)
Here's the complete YAML
clusterDomain: cluster.local
conf:
attrs: []
cache: 25%
cluster-name: ''
disable-cluster-name-verification: false
http-port: 8080
join: []
locality: ''
logtostderr: INFO
max-disk-temp-storage: 0
max-offset: 500ms
max-sql-memory: 25%
port: 26257
single-node: false
sql-audit-dir: ''
image:
credentials: {}
pullPolicy: IfNotPresent
repository: cockroachdb/cockroach
tag: v20.1.3
ingress:
annotations: {}
enabled: false
hosts: []
labels: {}
paths:
- /
tls: []
init:
affinity: {}
annotations: {}
labels:
app.kubernetes.io/component: init
nodeSelector: {}
resources: {}
tolerations: []
labels: {}
networkPolicy:
enabled: false
ingress:
grpc: []
http: []
service:
discovery:
annotations: {}
labels:
app.kubernetes.io/component: cockroachdb
ports:
grpc:
external:
name: grpc
port: 26257
internal:
name: grpc-internal
port: 26257
http:
name: http
port: 8080
public:
annotations: {}
labels:
app.kubernetes.io/component: cockroachdb
type: ClusterIP
statefulset:
annotations: {}
args: []
budget:
maxUnavailable: 1
env: []
labels:
app.kubernetes.io/component: cockroachdb
nodeAffinity: {}
nodeSelector: {}
podAffinity: {}
podAntiAffinity:
type: soft
weight: 100
podManagementPolicy: Parallel
priorityClassName: ''
replicas: 3
resources: {}
secretMounts: []
tolerations: []
updateStrategy:
type: RollingUpdate
storage:
hostPath: ''
persistentVolume:
annotations: {}
enabled: true
labels: {}
size: 100Gi
storageClass: ''
tls:
certs:
clientRootSecret: cockroachdb-root
nodeSecret: cockroachdb-node
provided: false
tlsSecret: false
enabled: false
init:
image:
credentials: {}
pullPolicy: IfNotPresent
repository: cockroachdb/cockroach-k8s-request-cert
tag: '0.4'
serviceAccount:
create: true
name: ''
Storage: 100Gi

Answer 1

Storage Size
It looks like Storage and store.persistentVolume.size can both be set to 1Gi if you are looking for one gigabyte of storage.
Local Storage
Then, I would check if you have a storageClass by running kubectl get storageClass. Many times, cluters come with the local-path-provisioner storageClass. If you have that, I would try setting store.persistentVolume.storageClass to the name of the local path proversion storageClass you have installed on your system. If you don't have that or an alternative, I would consider installing it.
More Info
I'm not certain, but it's possible that it is using this helm chart to install the database. This section of the chart deals with the volume claim managment, so I would look here if you need to do more troubleshooting: https://github.com/cockroachdb/helm-charts/blob/master/cockroachdb/templates/statefulset.yaml#L376