OCS4 with LocalStorage on 3-node OCP4

ocs4_and_localstorage_setup.sh

# ocs4_and_localstorage_setup.sh

### 前提条件 ###
# OCP4.5構築済み（3-nodeクラスター）
# OCPクラスターはシャットダウン済み

# ------------------------------------------------------ #

### 1. インストール事前作業 ###

## 踏み台サーバーへSSH接続
# テスト環境なのでrootで直接ログイン
ssh-add -K ~/.ssh/id_rsa
ssh -A root@192.168.1.21
cd OCP/

## 仮想マシン事前設定
# PowerCliコンテナ起動
docker run --rm -it vmware/powerclicore

# ESXi接続
Connect-VIServer -Server 192.168.1.101 -Force:$true
Get-VM -name master*

<< C.O.
# Snapshotの切り戻し（Name: preOCS）
$VMs = Get-VM -name master*
foreach($vm in $VMs){
    set-vm -vm $vm -Snapshot preOCS -Confirm:$false -RunAsync
}
C.O.

# CPU、Memory設定
Set-VM -vm master* -NumCpu 12 -CoresPerSocket 12  -Confirm:$false
Set-vm -vm master* -MemoryGB 32 -Confirm:$false

# ハードディスクの追加
$VMs = Get-VM -name master*
foreach($vm in $VMs){
  New-HardDisk -CapacityGB 1024 -StorageFormat:Thin -VM $vm
}

# disk.enableUUIDのパラメーター追加
foreach($vm in $VMs){
    Get-vm $vm | New-AdvancedSetting -Name disk.enableUUID -Value 'TRUE' -confirm:$false
}

foreach($vm in $VMs){
  Get-vm $vm | Get-AdvancedSetting -Name disk.enableUUID
}

# 仮想マシンの起動（Masterのみ）
Get-VM -name master-* | Start-vm

## クラスターへのログイン
# kubeconfigのexport
export KUBECONFIG=/root/OCP/bare-metal/auth/kubeconfig

# クラスターの各種確認
oc whoami
oc get nodes

# ---------------------------- #

### 2. LocalStorage Operatorの導入 ###
## ドキュメント:v4.3 日本語版
# https://access.redhat.com/documentation/ja-jp/red_hat_openshift_container_storage/4.3/html/deploying_openshift_container_storage/installing-openshift-container-storage-using-local-storage-devices_rhocs


# ラベル付与
oc label nodes master-0 cluster.ocs.openshift.io/openshift-storage=''
oc label nodes master-1 cluster.ocs.openshift.io/openshift-storage=''
oc label nodes master-2 cluster.ocs.openshift.io/openshift-storage=''

## Namespace作成
oc create namespace local-storage

## LocalStorage Operatorのインストール
# GUIでOperatorHubからLocalStorageを検索


## Local Disk IDの確認
# https://access.redhat.com/solutions/4928841
# Apply the DeamonSet with
oc apply -f https://raw.githubusercontent.com/dmoessne/ocs-disk-gather/master/ocs-disk-gatherer.yaml

# Podの起動確認
oc get po -l name=ocs-disk-gatherer -n default

# To collect the disk information, execute the following command:
kubectl logs --selector name=ocs-disk-gatherer --tail=-1 --since=10m --namespace default

#To clean up, use 
oc delete daemonsets ocs-disk-gatherer --namespace default
watch oc get po -l name=ocs-disk-gatherer -n default

## Option: Local Disk IDの手動確認
# 公式ドキュメントに記載の手順。ocs-disk-gathererを使う場合は実施不要。
oc debug node/master-0
chroot /host
ls -l /dev/disk/by-id
exit
exit

oc debug node/master-1
chroot /host
ls -l /dev/disk/by-id
exit
exit

oc debug node/master-2
chroot /host
ls -l /dev/disk/by-id
exit
exit


## LocalVolumeの作成
# GUIでLocalVolume作成
# LocalStorageをファイルシステムとして利用するCR（local-storage-block.yaml）
# ================== local-storage-block.yaml ================== #
apiVersion: local.storage.openshift.io/v1
kind: LocalVolume
metadata:
  name: local-block
  namespace: local-storage
spec:
  nodeSelector:
    nodeSelectorTerms:
    - matchExpressions:
        - key: cluster.ocs.openshift.io/openshift-storage
          operator: In
          values:
          - ""
  storageClassDevices:
    - storageClassName: localblock
      volumeMode: Block
      devicePaths:
       - /dev/disk/by-id/scsi-36000c2971c7455cfa9a475f5e1f7351f
       - /dev/disk/by-id/scsi-36000c29eda91eb1dc336a2d98c2fd399
       - /dev/disk/by-id/scsi-36000c291b67bf04375fba95a58b6007d
# ============================================================== #

# ---------------------------- #

### 3. OpenShift Container Storage Operator導入 ###
# GUIで実施
# OperatorHubからOpenShift Container Storageを検索、インストール
# https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/4.4/html/deploying_openshift_container_storage/deploying-openshift-container-storage

# Waiting Pod up
watch oc get pod -n openshift-storage


## ベアメタルでの OpenShift Container Storage クラスターの作成
# https://access.redhat.com/documentation/ja-jp/red_hat_openshift_container_storage/4.3/html/deploying_openshift_container_storage/installing-openshift-container-storage-using-local-storage-devices_rhocs#creating-openshift-container-storage-cluster-on-bare-metal_rhocs

## cluster-service-metal.yamlの確認
cd /root/OCP/OCS
cat cluster-service-metal.yaml
# ==== cluster-service-metal.yaml === #
apiVersion: ocs.openshift.io/v1
kind: StorageCluster
metadata:
  name: ocs-storagecluster
  namespace: openshift-storage
spec:
  manageNodes: false
  monDataDirHostPath: /var/lib/rook
  storageDeviceSets:
  - count: 1
    dataPVCTemplate:
      spec:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 500Gi
        storageClassName: localblock
        volumeMode: Block
    name: ocs-deviceset
    placement: {}
    portable: false
    replica: 3
    resources: {}
# =================================== #

# StorageCluster CR の作成
oc create -f cluster-service-metal.yaml

# Waiting Pod up
watch oc get pod -n openshift-storage

# ---------------------------- #

### 4. イメージレジストリーの設定 ###
# https://access.redhat.com/documentation/ja-jp/red_hat_openshift_container_storage/4.3/html/managing_openshift_container_storage/configure-storage-for-openshift-container-platform-services_rhocs#configuring-image-registry-to-use-openshift-container-storage_rhocs

# Project を openshift-image-registry に設定します。

# コンフィグを編集
# Removed→Managed
# storage:{} → PVC設定 
oc edit configs.imageregistry.operator.openshift.io

<< C.O.
  storage:
    pvc:
      claim: ocs4registry
C.O.

# ------------------------------------------------------ #

このコードは、下記の動画の中で使用しています。

【Live Install】OCS4 with LocalStorage on 3-node OCP4 #tech4on
https://youtu.be/TynNGH0Buh0