cita-node-operator

CITA Node Operator

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ATTENTIONS: THE MAIN BRANCH MAY BE IN AN UNSTABLE OR EVEN BROKEN STATE DURING DEVELOPMENT.

Overview

The CITA Node Operator provides an easy and solid solution to deploy and manage a full CITA-Cloud blockchain service stack to the target Kubernetes clusters in a scalable and high-available way. The CITA Node Operator defines multiple custom resources on top of Kubernetes Custom Resources. The Kubernetes API can then be used in a declarative way to manage CITA-Cloud deployment stack and ensure its scalability and high-availability operation.

Getting started

Deploy CITA Node Operator

• Add CITA Node Operator repository

helm repo add cita-node-operator https://cita-cloud.github.io/cita-node-operator

• Create the namespace to install CITA Node Operator(if needed)

kubectl create ns cita

• Install CITA Node Operator

helm install cita-node-operator cita-node-operator/cita-node-operator -n=cita

• Verify the installation

kubectl get pod -ncita | grep cita-node-operator

The expected output is as follows:

NAME                                         READY   STATUS    RESTARTS   AGE
cita-node-operator-757fcf4466-gllsn         1/1     Running   0          45h

Custom Resource Definition

CitaNode

Currently unavailable

BlockHeightFallback

Block height fallback. Roll back the block height of a node to the specified height.

Create a BlockHeightFallback job

Main step：shutdown node -> fallback -> start node

apiVersion: citacloud.rivtower.com/v1
kind: BlockHeightFallback
metadata:
  name: blockheightfallback-sample
  namespace: app-rivspace
spec:
  # The chain name for node（required）
  chain: chain-734116911817822208
  # The node name (required)
  node: chain-734116911817822208-0
  # Block height you want to fallback (required)
  blockHeight: 2000000
  # How nodes are deployed: python/cloud-config/helm (required)
  deployMethod: cloud-config
  # The image of job's pod（optional，default: latest）
  image: registry.devops.rivtower.com/cita-cloud/cita-node-job:v0.0.2
  # The image's pull policy（optional, IfNotPresent/Always/Never, default: IfNotPresent）
  pullPolicy: Always
  # How long to delete finished job resources: seconds unit(optional, default: 30s)
  ttlSecondsAfterFinished: 30
  # Whether the job's pod has affinity with the blockchain node(optional, default: false)
  podAffinityFlag: true

Backup

Backup: Backup the data of a node to a new PVC.

Create a Backup job

Main step：shutdown node -> backup -> start node

apiVersion: citacloud.rivtower.com/v1
kind: Backup
metadata:
  name: backup-sample
  namespace: app-rivspace
spec:
  # The chain name for node（required）
  chain: chain-734116911817822208
  # The node name (required)
  node: chain-734116911817822208-0
  # How nodes are deployed: python/cloud-config/helm (required)
  deployMethod: python
  # The storage class used by the backup PVC (optional，default: the same with node's storage class)
  storageClass: nas-client-provisioner
  # The actions during backup (optional, default: StopAndStart. Direct: direct data copy; StopAndStart: Shut down the node before backup and start the node after backup)
  action: StopAndStart
  # The image of job's pod（optional，default: latest）
  image: registry.devops.rivtower.com/cita-cloud/cita-node-job:v0.0.2
  # The image's pull policy（optional, IfNotPresent/Always/Never, default: IfNotPresent）
  pullPolicy: IfNotPresent
  # How long to delete finished job resources: seconds unit(optional, default: 30s)
  ttlSecondsAfterFinished: 30
  # Whether the job's pod has affinity with the blockchain node(optional, default: false)
  podAffinityFlag: true

Snapshot

Snapshot: Take a snapshot of a node and back up the snapshot data to a new PVC.

Create a Backup job

Main step：shutdown node -> snapshot -> start node

apiVersion: citacloud.rivtower.com/v1
kind: Snapshot
metadata:
  name: snapshot-sample
  namespace: app-rivspace
spec:
  # The chain name for node（required）
  chain: test-chain-zenoh-bft
  # The node name (required)
  node: test-chain-zenoh-bft-node0
  # Block height you want to snapshot (required)
  blockHeight: 30
  # How nodes are deployed: python/cloud-config/helm (required)
  deployMethod: cloud-config
  # The storage class used by the snapshot PVC (optional，default: the same with node's storage class)
  storageClass: nas-client-provisioner
  # The image of job's pod（optional，default: latest）
  image: registry.devops.rivtower.com/cita-cloud/cita-node-job:v0.0.2
  # The image's pull policy（optional, IfNotPresent/Always/Never, default: IfNotPresent）
  pullPolicy: IfNotPresent
  # How long to delete finished job resources: seconds unit(optional, default: 30s)
  ttlSecondsAfterFinished: 30
  # Whether the job's pod has affinity with the blockchain node(optional, default: false)
  podAffinityFlag: true

Restore

Restore: data recovery of the node based on the specified backup or snapshot.

Restore from backup

Main step：shutdown node -> data copy -> start node

apiVersion: citacloud.rivtower.com/v1
kind: Restore
metadata:
  name: restore-sample
  namespace: app-rivspace
spec:
  # The chain name for node (required)
  chain: chain-734116911817822208
  # The node name (required)
  node: chain-734116911817822208-0
  # How nodes are deployed: python/cloud-config/helm (required)
  deployMethod: python
  # backup cr (required)
  backup: backup-sample
  # The actions during restore (optional, default: StopAndStart. Direct: direct data copy; StopAndStart: Shut down the node before restore and start the node after restore)
  action: StopAndStart
  # The image of job's pod (optional，default: latest)
  image: registry.devops.rivtower.com/cita-cloud/cita-node-job:v0.0.2
  # The image's pull policy (optional, IfNotPresent/Always/Never, default: IfNotPresent)
  pullPolicy: IfNotPresent
  # How long to delete finished job resources: seconds unit (optional, default: 30s)
  ttlSecondsAfterFinished: 30
  # Whether the job's pod has affinity with the blockchain node (optional, default: false)
  podAffinityFlag: true

Restore from snapshot

Main step：shutdown node -> executor snapshot recovery command -> start node

 apiVersion: citacloud.rivtower.com/v1
kind: Restore
metadata:
  name: restore-sample-cloud-config
  namespace: app-rivspace
spec:
  # The chain name for node (required)
  chain: test-chain-zenoh-bft
  # The node name (required)
  node: test-chain-zenoh-bft-node0
  # How nodes are deployed: python/cloud-config/helm (required)
  deployMethod: cloud-config
  # snapshot cr (required)
  snapshot: snapshot-sample
  # The actions during restore (optional, default: StopAndStart. Direct: direct data copy; StopAndStart: Shut down the node before restore and start the node after restore)
  action: StopAndStart
  # The image of job's pod (optional，default: latest)
  image: registry.devops.rivtower.com/cita-cloud/cita-node-job:v0.0.2
  # The image's pull policy (optional, IfNotPresent/Always/Never, default: IfNotPresent)
  pullPolicy: IfNotPresent
  # How long to delete finished job resources: seconds unit (optional, default: 30s)
  ttlSecondsAfterFinished: 30
  # Whether the job's pod has affinity with the blockchain node (optional, default: false)
  podAffinityFlag: true

Switchover

Account switch: switch the accounts of two nodes.

Create a Switchover job

Main step：shutdown first node -> shutdown second node -> switch account configmap volume -> start first node -> start second node

apiVersion: citacloud.rivtower.com/v1
kind: Switchover
metadata:
  name: switchover-sample
  namespace: app-rivspace
spec:
  # The chain name for node (required)
  chain: test-chain-zenoh-bft
  # first node (required)
  sourceNode: test-chain-zenoh-bft-node0
  # second node (required)
  destNode: test-chain-zenoh-bft-node1
  # The image of job's pod（optional，default: latest）
  image: registry.devops.rivtower.com/cita-cloud/cita-node-job:v0.0.2
  # The image's pull policy（optional, IfNotPresent/Always/Never, default: IfNotPresent）
  pullPolicy: IfNotPresent
  # How long to delete finished job resources: seconds unit(optional, default: 30s)
  ttlSecondsAfterFinished: 30

ChangeOwner

Permission conversion: used to change node data file permissions during upgrade(uid, gid).

Create a ChangeOwner job

apiVersion: citacloud.rivtower.com/v1
kind: ChangeOwner
metadata:
  name: changeowner-sample
  namespace: app-rivspace
spec:
  # The chain name for node (required)
  chain: test-chain-zenoh-bft
  # The node name (required)
  node: test-chain-zenoh-bft-node0
  # How nodes are deployed: python/cloud-config/helm (required)
  deployMethod: cloud-config
  # chown uid（optional, default: 1000)
  uid: 1000
  # chown gid (optional, default: 1000)
  gid: 1000
  # The image of job's pod（optional，default: latest）
  image: registry.devops.rivtower.com/cita-cloud/cita-node-job:v0.0.2
  # The image's pull policy（optional, IfNotPresent/Always/Never, default: IfNotPresent）
  pullPolicy: IfNotPresent
  # How long to delete finished job resources: seconds unit(optional, default: 30s)
  ttlSecondsAfterFinished: 30
  # Whether the job's pod has affinity with the blockchain node (optional, default: false)
  podAffinityFlag: false