Asynchronous DR

Pre-requisites

Version: Portworx v2.1 or later needs to be installed on both clusters. Also requires Stork v2.2+ on both the clusters.
Secret Store : Make sure you have configured a secret store on both your clusters. This will be used to store the credentials for the objectstore.
Network Connectivity: Ports 9001 and 9010 on the destination cluster should be reachable by the source cluster.

Stork helper: storkctl is a command-line tool for interacting with a set of scheduler extensions.

The following steps can be used to download storkctl:

Linux:

curl http://openstorage-stork.s3-website-us-east-1.amazonaws.com/storkctl/latest/linux/storkctl -o storkctl &&
sudo mv storkctl /usr/local/bin &&
sudo chmod +x /usr/local/bin/storkctl

OS X:

curl http://openstorage-stork.s3-website-us-east-1.amazonaws.com/storkctl/latest/darwin/storkctl -o storkctl &&
sudo mv storkctl /usr/local/bin &&
sudo chmod +x /usr/local/bin/storkctl

Windows:
- Download storkctl.exe
- Move storkctl.exe to a directory in your PATH

License: You will need a DR enabled Portworx License at both the source and destination cluster to use this feature.

Overview

With asynchronous DR, you can replicate Kubernetes applications and their data between two Kubernetes clusters. Here, a separate Portworx Enterprise cluster runs under each Kubernetes cluster.

The active Kubernetes cluster asynchronously backs-up apps, configuration and data to a standby Kubernetes cluster.
The standby Kubernetes cluster has running controllers, configuration and PVCs that map to a local volumes.
Incremental changes in Kubernetes applications and Portworx data are continuously sent to the standby cluster.

The following Kubernetes resources are supported as part of the Asynchronous DR feature:

PV
PVC
Deployment
StatefulSet
ConfigMap
Service
Secret
DaemonSet
ServiceAccount
Role
RoleBinding
ClusterRole
ClusterRoleBinding
Ingress

Enable load balancing on cloud clusters

If you’re running Kubernetes on the cloud, you must configure an External LoadBalancer (ELB) for the PX API service.

Warning: Do not enable load balancing without authorization enabled on the PX cluster.

Enable load balancing by entering the kubectl edit service command and changing the service type value from nodePort to loadBalancer:

kubectl edit service portworx-service -n kube-system

kind: Service
apiVersion: v1
metadata:
  name: portworx-service
  namespace: kube-system
  labels:
    name: portworx
spec:
  selector:
    name: portworx
  type: loadBalancer

Generate and Apply a ClusterPair Spec

In Kubernetes, you must define a trust object called ClusterPair. Portworx requires this object to communicate with the destination cluster. The ClusterPair object pairs the Portworx storage driver with the Kubernetes scheduler, allowing the volumes and resources to be migrated between clusters.

The ClusterPair is generated and used in the following way:

The ClusterPair spec is generated on the destination cluster.
The generated spec is then applied on the source cluster

Perform the following steps to create a cluster pair:

Create object store credentials for cloud clusters

If you are running Kubernetes on-premises, you may skip this section. If your Kubernetes clusters are on the cloud, you must create object credentials on both the destination and source clusters before you can create a cluster pair.

The options you use to create your object store credentials differ based on which object store you use:

Create Amazon s3 credentials

Create the credentials by entering the pxctl credentials create command, specifying the following:

--provider as s3
--s3-access-key with your aws access key
--s3-secret-key with your aws secret key
--s3-region with your region
--s3-endpoint with s3.amazonaws.com
clusterpair_ with the UUID of your destination cluster

/opt/pwx/bin/pxctl credentials create --provider s3 --s3-access-key <aws_access_key> --s3-secret-key <aws_secret_key> --s3-region us-east-1  --s3-endpoint s3.amazonaws.com clusterpair_<UUID_of_destination_cluster>

Create Microsoft Azure credentials

Create the credentials by entering the pxctl credentials create command, specifying the following:

--provider as azure
--azure-account-name with the name of your Azure account
--azure-account-key with your Azure account key
clusterpair_ with the UUID of your destination cluster appended

/opt/pwx/bin/pxctl credentials create --provider azure --azure-account-name <your_azure_account_name> --azure-account-key <your_azure_account_key> clusterpair_<UUID_of_destination_cluster>

Create Google Cloud Platform credentials

Create the credentials by entering the pxctl credentials create command, specifying the following:

--provider as google
--google-project-id with the string of your Google project ID
--google-json-key-file with the filename of your GCP JSON key file
clusterpair_ with the UUID of your destination cluster appended

/opt/pwx/bin/pxctl credentials create --provider google --google-project-id <your_google_project_ID> --google-json-key-file <your_GCP_JSON_key_file> clusterpair_<UUID_of_destination_cluster>

Generate a ClusterPair on the destination cluster

To generate the ClusterPair spec, run the following command on the destination cluster:

storkctl generate clusterpair -n migrationnamespace remotecluster

Here, the name (remotecluster) is the Kubernetes object that will be created on the source cluster representing the pair relationship.

During the actual migration, you will reference this name to identify the destination of your migration.

apiVersion: stork.libopenstorage.org/v1alpha1
kind: ClusterPair
metadata:
    creationTimestamp: null
    name: remotecluster
    namespace: migrationnamespace
spec:
   config:
      clusters:
         kubernetes:
            LocationOfOrigin: /etc/kubernetes/admin.conf
            certificate-authority-data: <CA_DATA>
            server: https://192.168.56.74:6443
      contexts:
         kubernetes-admin@kubernetes:
            LocationOfOrigin: /etc/kubernetes/admin.conf
            cluster: kubernetes
            user: kubernetes-admin
      current-context: kubernetes-admin@kubernetes
      preferences: {}
      users:
         kubernetes-admin:
            LocationOfOrigin: /etc/kubernetes/admin.conf
            client-certificate-data: <CLIENT_CERT_DATA>
            client-key-data: <CLIENT_KEY_DATA>
    options:
       <insert_storage_options_here>: ""
       mode: DisasterRecovery
status:
  remoteStorageId: ""
  schedulerStatus: ""
  storageStatus: ""

Enable DR mode

By default, every 7th migration will be a full migration. For DR though, we want every migration to be incremental. This can be enabled by setting the mode for the clusterPair to DisasterRecovery. For example, for the clusterPair below, we can add the mode under spec.options:

apiVersion: stork.libopenstorage.org/v1alpha1
kind: ClusterPair
metadata:
  creationTimestamp: null
  name: remotecluster
spec:
  config:
    clusters:
      kubernetes:
        LocationOfOrigin: /etc/kubernetes/admin.conf
        certificate-authority-data: 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
        server: https://192.168.56.74:6443
    contexts:
      kubernetes-admin@kubernetes:
        LocationOfOrigin: /etc/kubernetes/admin.conf
        cluster: kubernetes
        user: kubernetes-admin
    current-context: kubernetes-admin@kubernetes
    preferences: {}
    users:
      kubernetes-admin:
        LocationOfOrigin: /etc/kubernetes/admin.conf
        client-certificate-data: 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
        client-key-data: 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
  options:
    ip:     <ip_of_remote_px_node>
    port:   <port_of_remote_px_node_default_9001>
    token:  <token_from_step_3>
    mode: DisasterRecovery
status:
  remoteStorageId: ""
  schedulerStatus: ""
  storageStatus: ""

Scheduling migrations

You can schedule a migration through a schedule policy. In the next sections, we will walk you through how to spec, validate, and display a schedule policy. Then, we will use our new schedule policy to schedule a migration.

Schedule policies

You can use schedule policies to specify when a specific action needs to be triggered. Schedule policies do not contain any actions themselves. Also, they are not namespaced. Storage policies are similar to storage classes where an admin is expected to create schedule policies which are then consumed by other users.

There are 4 sections in a schedule Policy spec:

Interval: the interval in minutes after which the action should be triggered
Daily: the time at which the action should be triggered every day
Weekly: the day of the week and the time in that day when the action should be triggered
Monthly: the date of the month and the time on that date when the action should be triggered

Let’s look at an example of how we could spec a policy:

apiVersion: stork.libopenstorage.org/v1alpha1
kind: SchedulePolicy
metadata:
  name: testpolicy
  namespace: mysql
policy:
  interval:
    intervalMinutes: 1
  daily:
    time: "10:14PM"
  weekly:
    day: "Thursday"
    time: "10:13PM"
  monthly:
    date: 14
    time: "8:05PM"

Validation

The following validations rules are defined:

The times in the policy need to follow the time.Kitchen format, example 1:02PM or 1:02pm.
The date of the month should be greater than 0 and less than 31. If a date doesn’t exist in a month, it will roll over to the next month. For example, if the date is specified as Feb 31, it will trigger on either 2nd or 3rd March depending on if it is a leap year.
The weekday can be specified in either long or short format, ie either “Sunday” or “Sun” are valid days.

Displaying a policy

To display a policy, run storkctl get with the name of the policy as a parameter:

storkctl get schedulepolicy

NAME           INTERVAL-MINUTES   DAILY     WEEKLY             MONTHLY
testpolicy     1                  10:14PM   Thursday@10:13PM   14@8:05PM

Scheduling a migration

Once a policy has been created, you can use it to schedule a migration. The spec for the MigrationSchedule spec contains the same fields as the Migration spec with the addition of the policy name. The MigrationSchedule object is namespaced like the Migration object.

Note that startApplications should be set to false in the spec. Otherwise, the first Migration will start the pods on the remote cluster and will succeed. But all subsequent migrations will fail since the volumes will be in use.

NOTE: If your cluster has a DR license applied to it, you can only perform migrations in DR mode; this includes operations involving the pxctl cluster migrate command.

Continuing our previous example with testpolicy, here is how to create a MigrationSchedule object that schedules a migration:

apiVersion: stork.libopenstorage.org/v1alpha1
kind: MigrationSchedule
metadata:
  name: mysqlmigrationschedule
  namespace: mysql
spec:
  template:
    spec:
      clusterPair: remotecluster
      includeResources: true
      startApplications: false
      namespaces:
      - mysql
  schedulePolicyName: testpolicy

If the policy name is missing or invalid there will be events logged against the schedule object. Success and failures of the migrations created by the schedule will also result in events being logged against the object. These events can be seen by running a kubectl describe on the object

The output of kubectl describe will also show the status of the migrations that were triggered for each of the policies along with the start and finish times. The statuses will be maintained for the last successful migration and any Failed or InProgress migrations for each policy type.

Let’s now run kubectl describe and see how the output would look like:

kubectl describe migrationschedules.stork.libopenstorage.org -n mysql

Name:         mysqlmigrationschedule

Namespace:    mysql
Labels:       <none>
Annotations:  kubectl.kubernetes.io/last-applied-configuration:
                {"apiVersion":"stork.libopenstorage.org/v1alpha1","kind":"MigrationSchedule","metadata":{"annotations":{},"name":"mysqlmigrationschedule",...
API Version:  stork.libopenstorage.org/v1alpha1
Kind:         MigrationSchedule
Metadata:
  Creation Timestamp:  2019-02-14T04:53:58Z
  Generation:          1
  Resource Version:    30206628
  Self Link:           /apis/stork.libopenstorage.org/v1alpha1/namespaces/mysql/migrationschedules/mysqlmigrationschedule
  UID:                 8a245c1d-3014-11e9-8d3e-0214683e8447
Spec:
  Schedule Policy Name:  daily
  Template:
    Spec:
      Cluster Pair:       remotecluster
      Include Resources:  true
      Namespaces:
        mysql
      Post Exec Rule:
      Pre Exec Rule:
      Selectors:           <nil>
      Start Applications:  false
Status:
  Items:
    Daily:
      Creation Timestamp:  2019-02-14T22:16:51Z
      Finish Timestamp:    2019-02-14T22:19:51Z
      Name:                mysqlmigrationschedule-daily-2019-02-14-221651
      Status:              Successful
    Interval:
      Creation Timestamp:  2019-02-16T00:40:52Z
      Finish Timestamp:    2019-02-16T00:41:52Z
      Name:                mysqlmigrationschedule-interval-2019-02-16-004052
      Status:              Successful
      Creation Timestamp:  2019-02-16T00:41:52Z
      Finish Timestamp:    <nil>
      Name:                mysqlmigrationschedule-interval-2019-02-16-004152
      Status:              InProgress
    Monthly:
      Creation Timestamp:  2019-02-14T20:05:41Z
      Finish Timestamp:    2019-02-14T20:07:41Z
      Name:                mysqlmigrationschedule-monthly-2019-02-14-200541
      Status:              Successful
    Weekly:
      Creation Timestamp:  2019-02-14T22:13:51Z
      Finish Timestamp:    2019-02-14T22:16:51Z
      Name:                mysqlmigrationschedule-weekly-2019-02-14-221351
      Status:              Successful
Events:
  Type    Reason      Age                    From   Message
  ----    ------      ----                   ----   -------
  Normal  Successful  4m55s (x53 over 164m)  stork  (combined from similar events): Scheduled migration (mysqlmigrationschedule-interval-2019-02-16-003652) completed successfully

Each migration is associated with a Migrations object. To get the most important information, type:

kubectl get migration -n mysql

NAME AGE
mysqlmigrationschedule-daily-2019-02-14-221651 1d
mysqlmigrationschedule-interval-2019-02-16-004052 5m
mysqlmigrationschedule-interval-2019-02-16-004152 4m
mysqlmigrationschedule-monthly-2019-02-14-200541 1d
mysqlmigrationschedule-weekly-2019-02-14-221351 1d

Once the MigrationSchedule object is deleted, all the associated Migration objects should be deleted as well.