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4.2. 流程

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以下流程包含两个部分：

  • 在 eu-west-1 中创建一个名为 "keycloak-aurora" 的 Aurora Multi-AZ 数据库集群。
  • 在 ROSA 集群和 Aurora VPC 之间创建对等连接，以允许在 ROSA 集群上部署的应用程序与数据库建立连接。

4.2.1. 创建 Aurora 数据库集群

  1. 为 Aurora 集群创建 VPC

    命令：

    aws ec2 create-vpc \
  --cidr-block 192.168.0.0/16 \
  --tag-specifications "ResourceType=vpc, Tags=[{Key=AuroraCluster,Value=keycloak-aurora}]" \1
  --region eu-west-1

    1
    我们使用 Aurora 集群的名称添加可选标签，以便我们可以轻松检索 VPC。

    输出：

    {
    "Vpc": {
        "CidrBlock": "192.168.0.0/16",
        "DhcpOptionsId": "dopt-0bae7798158bc344f",
        "State": "pending",
        "VpcId": "vpc-0b40bd7c59dbe4277",
        "OwnerId": "606671647913",
        "InstanceTenancy": "default",
        "Ipv6CidrBlockAssociationSet": [],
        "CidrBlockAssociationSet": [
            {
                "AssociationId": "vpc-cidr-assoc-09a02a83059ba5ab6",
                "CidrBlock": "192.168.0.0/16",
                "CidrBlockState": {
                    "State": "associated"
                }
            }
        ],
        "IsDefault": false
    }
}

  2. 使用新创建的 VPC 的 VpcId，为每个可用区创建一个子网。

    注意

    为每个可用区指定的 cidr-block 范围不得重叠。

    1. 区 A

      命令：

      aws ec2 create-subnet \
  --availability-zone "eu-west-1a" \
  --vpc-id vpc-0b40bd7c59dbe4277 \
  --cidr-block 192.168.0.0/19 \
  --region eu-west-1

      输出：

      {
    "Subnet": {
        "AvailabilityZone": "eu-west-1a",
        "AvailabilityZoneId": "euw1-az3",
        "AvailableIpAddressCount": 8187,
        "CidrBlock": "192.168.0.0/19",
        "DefaultForAz": false,
        "MapPublicIpOnLaunch": false,
        "State": "available",
        "SubnetId": "subnet-0d491a1a798aa878d",
        "VpcId": "vpc-0b40bd7c59dbe4277",
        "OwnerId": "606671647913",
        "AssignIpv6AddressOnCreation": false,
        "Ipv6CidrBlockAssociationSet": [],
        "SubnetArn": "arn:aws:ec2:eu-west-1:606671647913:subnet/subnet-0d491a1a798aa878d",
        "EnableDns64": false,
        "Ipv6Native": false,
        "PrivateDnsNameOptionsOnLaunch": {
            "HostnameType": "ip-name",
            "EnableResourceNameDnsARecord": false,
            "EnableResourceNameDnsAAAARecord": false
        }
    }
}

    2. zone B

      命令：

      aws ec2 create-subnet \
  --availability-zone "eu-west-1b" \
  --vpc-id vpc-0b40bd7c59dbe4277 \
  --cidr-block 192.168.32.0/19 \
  --region eu-west-1

      输出：

      {
    "Subnet": {
        "AvailabilityZone": "eu-west-1b",
        "AvailabilityZoneId": "euw1-az1",
        "AvailableIpAddressCount": 8187,
        "CidrBlock": "192.168.32.0/19",
        "DefaultForAz": false,
        "MapPublicIpOnLaunch": false,
        "State": "available",
        "SubnetId": "subnet-057181b1e3728530e",
        "VpcId": "vpc-0b40bd7c59dbe4277",
        "OwnerId": "606671647913",
        "AssignIpv6AddressOnCreation": false,
        "Ipv6CidrBlockAssociationSet": [],
        "SubnetArn": "arn:aws:ec2:eu-west-1:606671647913:subnet/subnet-057181b1e3728530e",
        "EnableDns64": false,
        "Ipv6Native": false,
        "PrivateDnsNameOptionsOnLaunch": {
            "HostnameType": "ip-name",
            "EnableResourceNameDnsARecord": false,
            "EnableResourceNameDnsAAAARecord": false
        }
    }
}

  3. 获取 Aurora VPC 路由表 ID

    命令：

    aws ec2 describe-route-tables \
  --filters Name=vpc-id,Values=vpc-0b40bd7c59dbe4277 \
  --region eu-west-1

    输出：

    {
    "RouteTables": [
        {
            "Associations": [
                {
                    "Main": true,
                    "RouteTableAssociationId": "rtbassoc-02dfa06f4c7b4f99a",
                    "RouteTableId": "rtb-04a644ad3cd7de351",
                    "AssociationState": {
                        "State": "associated"
                    }
                }
            ],
            "PropagatingVgws": [],
            "RouteTableId": "rtb-04a644ad3cd7de351",
            "Routes": [
                {
                    "DestinationCidrBlock": "192.168.0.0/16",
                    "GatewayId": "local",
                    "Origin": "CreateRouteTable",
                    "State": "active"
                }
            ],
            "Tags": [],
            "VpcId": "vpc-0b40bd7c59dbe4277",
            "OwnerId": "606671647913"
        }
    ]
}

  4. 关联 Aurora VPC 路由表每个可用区的子网

    1. 区 A

      命令：

      aws ec2 associate-route-table \
  --route-table-id rtb-04a644ad3cd7de351 \
  --subnet-id subnet-0d491a1a798aa878d \
  --region eu-west-1

    2. zone B

      命令：

      aws ec2 associate-route-table \
  --route-table-id rtb-04a644ad3cd7de351 \
  --subnet-id subnet-057181b1e3728530e \
  --region eu-west-1

  5. 创建 Aurora 子网组

    命令：

    aws rds create-db-subnet-group \
  --db-subnet-group-name keycloak-aurora-subnet-group \
  --db-subnet-group-description "Aurora DB Subnet Group" \
  --subnet-ids subnet-0d491a1a798aa878d subnet-057181b1e3728530e \
  --region eu-west-1

  6. 创建 Aurora 安全组

    命令：

    aws ec2 create-security-group \
  --group-name keycloak-aurora-security-group \
  --description "Aurora DB Security Group" \
  --vpc-id vpc-0b40bd7c59dbe4277 \
  --region eu-west-1

    输出：

    {
    "GroupId": "sg-0d746cc8ad8d2e63b"
}

  7. 创建 Aurora DB 集群

    命令：

    aws rds create-db-cluster \
    --db-cluster-identifier keycloak-aurora \
    --database-name keycloak \
    --engine aurora-postgresql \
    --engine-version ${properties["aurora-postgresql.version"]} \
    --master-username keycloak \
    --master-user-password secret99 \
    --vpc-security-group-ids sg-0d746cc8ad8d2e63b \
    --db-subnet-group-name keycloak-aurora-subnet-group \
    --region eu-west-1

    注意

    您应该替换 --master-username 和 --master-user-password 值。在配置红帽构建的 Keycloak 数据库凭证时，必须使用此处指定的值。

    输出：

    {
    "DBCluster": {
        "AllocatedStorage": 1,
        "AvailabilityZones": [
            "eu-west-1b",
            "eu-west-1c",
            "eu-west-1a"
        ],
        "BackupRetentionPeriod": 1,
        "DatabaseName": "keycloak",
        "DBClusterIdentifier": "keycloak-aurora",
        "DBClusterParameterGroup": "default.aurora-postgresql15",
        "DBSubnetGroup": "keycloak-aurora-subnet-group",
        "Status": "creating",
        "Endpoint": "keycloak-aurora.cluster-clhthfqe0h8p.eu-west-1.rds.amazonaws.com",
        "ReaderEndpoint": "keycloak-aurora.cluster-ro-clhthfqe0h8p.eu-west-1.rds.amazonaws.com",
        "MultiAZ": false,
        "Engine": "aurora-postgresql",
        "EngineVersion": "15.3",
        "Port": 5432,
        "MasterUsername": "keycloak",
        "PreferredBackupWindow": "02:21-02:51",
        "PreferredMaintenanceWindow": "fri:03:34-fri:04:04",
        "ReadReplicaIdentifiers": [],
        "DBClusterMembers": [],
        "VpcSecurityGroups": [
            {
                "VpcSecurityGroupId": "sg-0d746cc8ad8d2e63b",
                "Status": "active"
            }
        ],
        "HostedZoneId": "Z29XKXDKYMONMX",
        "StorageEncrypted": false,
        "DbClusterResourceId": "cluster-IBWXUWQYM3MS5BH557ZJ6ZQU4I",
        "DBClusterArn": "arn:aws:rds:eu-west-1:606671647913:cluster:keycloak-aurora",
        "AssociatedRoles": [],
        "IAMDatabaseAuthenticationEnabled": false,
        "ClusterCreateTime": "2023-11-01T10:40:45.964000+00:00",
        "EngineMode": "provisioned",
        "DeletionProtection": false,
        "HttpEndpointEnabled": false,
        "CopyTagsToSnapshot": false,
        "CrossAccountClone": false,
        "DomainMemberships": [],
        "TagList": [],
        "AutoMinorVersionUpgrade": true,
        "NetworkType": "IPV4"
    }
}

  8. 创建 Aurora DB 实例

    1. 创建区 A Writer 实例

      命令：

        aws rds create-db-instance \
    --db-cluster-identifier keycloak-aurora \
    --db-instance-identifier "keycloak-aurora-instance-1" \
    --db-instance-class db.t4g.large \
    --engine aurora-postgresql \
    --region eu-west-1

    2. 创建区 B Reader 实例

      命令：

        aws rds create-db-instance \
    --db-cluster-identifier keycloak-aurora \
    --db-instance-identifier "keycloak-aurora-instance-2" \
    --db-instance-class db.t4g.large \
    --engine aurora-postgresql \
    --region eu-west-1

  9. 等待所有 Writer 和 Reader 实例就绪

    命令：

    aws rds wait db-instance-available --db-instance-identifier keycloak-aurora-instance-1 --region eu-west-1
aws rds wait db-instance-available --db-instance-identifier keycloak-aurora-instance-2 --region eu-west-1

  10. Obtain the Writer 端点 URL 供 Keycloak 使用

    命令：

    aws rds describe-db-clusters \
  --db-cluster-identifier keycloak-aurora \
  --query 'DBClusters[*].Endpoint' \
  --region eu-west-1 \
  --output text

    输出：

    [
    "keycloak-aurora.cluster-clhthfqe0h8p.eu-west-1.rds.amazonaws.com"
]

4.2.2. 使用 ROSA 集群建立对等连接

对包含红帽构建的 Keycloak 部署的每个 ROSA 集群执行这些步骤。

  1. 检索 Aurora VPC

    命令：

    aws ec2 describe-vpcs \
  --filters "Name=tag:AuroraCluster,Values=keycloak-aurora" \
  --query 'Vpcs[*].VpcId' \
  --region eu-west-1 \
  --output text

    输出：

    vpc-0b40bd7c59dbe4277

  2. 检索 ROSA 集群 VPC

    1. 使用 oc登录到 ROSA 集群

    2. 检索 ROSA VPC

      命令：

      NODE=$(oc get nodes --selector=node-role.kubernetes.io/worker -o jsonpath='{.items[0].metadata.name}')
aws ec2 describe-instances \
  --filters "Name=private-dns-name,Values=${NODE}" \
  --query 'Reservations[0].Instances[0].VpcId' \
  --region eu-west-1 \
  --output text

      输出：

      vpc-0b721449398429559

  3. 创建 Peering 连接

    命令：

    aws ec2 create-vpc-peering-connection \
  --vpc-id vpc-0b721449398429559 \1
  --peer-vpc-id vpc-0b40bd7c59dbe4277 \2
  --peer-region eu-west-1 \
  --region eu-west-1

    1
    ROSA 集群 VPC
    2
    Aurora VPC

    输出：

    {
    "VpcPeeringConnection": {
        "AccepterVpcInfo": {
            "OwnerId": "606671647913",
            "VpcId": "vpc-0b40bd7c59dbe4277",
            "Region": "eu-west-1"
        },
        "ExpirationTime": "2023-11-08T13:26:30+00:00",
        "RequesterVpcInfo": {
            "CidrBlock": "10.0.17.0/24",
            "CidrBlockSet": [
                {
                    "CidrBlock": "10.0.17.0/24"
                }
            ],
            "OwnerId": "606671647913",
            "PeeringOptions": {
                "AllowDnsResolutionFromRemoteVpc": false,
                "AllowEgressFromLocalClassicLinkToRemoteVpc": false,
                "AllowEgressFromLocalVpcToRemoteClassicLink": false
            },
            "VpcId": "vpc-0b721449398429559",
            "Region": "eu-west-1"
        },
        "Status": {
            "Code": "initiating-request",
            "Message": "Initiating Request to 606671647913"
        },
        "Tags": [],
        "VpcPeeringConnectionId": "pcx-0cb23d66dea3dca9f"
    }
}

  4. 等待 Peering 连接存在

    命令：

    aws ec2 wait vpc-peering-connection-exists --vpc-peering-connection-ids pcx-0cb23d66dea3dca9f

  5. 接受对等连接

    命令：

    aws ec2 accept-vpc-peering-connection \
  --vpc-peering-connection-id pcx-0cb23d66dea3dca9f \
  --region eu-west-1

    输出：

    {
    "VpcPeeringConnection": {
        "AccepterVpcInfo": {
            "CidrBlock": "192.168.0.0/16",
            "CidrBlockSet": [
                {
                    "CidrBlock": "192.168.0.0/16"
                }
            ],
            "OwnerId": "606671647913",
            "PeeringOptions": {
                "AllowDnsResolutionFromRemoteVpc": false,
                "AllowEgressFromLocalClassicLinkToRemoteVpc": false,
                "AllowEgressFromLocalVpcToRemoteClassicLink": false
            },
            "VpcId": "vpc-0b40bd7c59dbe4277",
            "Region": "eu-west-1"
        },
        "RequesterVpcInfo": {
            "CidrBlock": "10.0.17.0/24",
            "CidrBlockSet": [
                {
                    "CidrBlock": "10.0.17.0/24"
                }
            ],
            "OwnerId": "606671647913",
            "PeeringOptions": {
                "AllowDnsResolutionFromRemoteVpc": false,
                "AllowEgressFromLocalClassicLinkToRemoteVpc": false,
                "AllowEgressFromLocalVpcToRemoteClassicLink": false
            },
            "VpcId": "vpc-0b721449398429559",
            "Region": "eu-west-1"
        },
        "Status": {
            "Code": "provisioning",
            "Message": "Provisioning"
        },
        "Tags": [],
        "VpcPeeringConnectionId": "pcx-0cb23d66dea3dca9f"
    }
}

  6. 更新 ROSA 集群 VPC 路由

    命令：

    ROSA_PUBLIC_ROUTE_TABLE_ID=$(aws ec2 describe-route-tables \
  --filters "Name=vpc-id,Values=vpc-0b721449398429559" "Name=association.main,Values=true" \1
  --query "RouteTables[*].RouteTableId" \
  --output text \
  --region eu-west-1
)
aws ec2 create-route \
  --route-table-id ${ROSA_PUBLIC_ROUTE_TABLE_ID} \
  --destination-cidr-block 192.168.0.0/16 \2
  --vpc-peering-connection-id pcx-0cb23d66dea3dca9f \
  --region eu-west-1

    1
    ROSA 集群 VPC
    2
    这必须与创建 Aurora VPC 时使用的 cidr-block 相同

  7. 更新 Aurora 安全组

    命令：

    AURORA_SECURITY_GROUP_ID=$(aws ec2 describe-security-groups \
  --filters "Name=group-name,Values=keycloak-aurora-security-group" \
  --query "SecurityGroups[*].GroupId" \
  --region eu-west-1 \
  --output text
)
aws ec2 authorize-security-group-ingress \
  --group-id ${AURORA_SECURITY_GROUP_ID} \
  --protocol tcp \
  --port 5432 \
  --cidr 10.0.17.0/24 \1
  --region eu-west-1

    1
    ROSA 集群的 "machine_cidr"

    输出：

    {
    "Return": true,
    "SecurityGroupRules": [
        {
            "SecurityGroupRuleId": "sgr-0785d2f04b9cec3f5",
            "GroupId": "sg-0d746cc8ad8d2e63b",
            "GroupOwnerId": "606671647913",
            "IsEgress": false,
            "IpProtocol": "tcp",
            "FromPort": 5432,
            "ToPort": 5432,
            "CidrIpv4": "10.0.17.0/24"
        }
    ]
}

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