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Container-Native Storage for OpenShift Container Platform
8.2. Deploying Containerized Red Hat Gluster Storage Solutions

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8.2. Deploying Containerized Red Hat Gluster Storage Solutions

The following section covers deployment of the Container-Native Storage pods and Container-Ready Storage and using the cns-deploy tool.

Note

It is recommended that a separate cluster for OpenShift Container Platform infrastructure workload (registry, logging and metrics) and application pod storage. Hence, if you have more than 6 nodes ensure you create multiple clusters with a minimum of 3 nodes each. The infrastructure cluster should belong to the default project namespace.
If you want to enable encryption on the Container-Native Storage setup, refer Chapter 17, Enabling Encryption before proceeding with the following steps.

You must first provide a topology file for heketi which describes the topology of the Red Hat Gluster Storage nodes and their attached storage devices. A sample, formatted topology file (topology-sample.json) is installed with the ‘heketi-client’ package in the /usr/share/heketi/ directory.

{
    "clusters": [
        {
            "nodes": [
                {
                    "node": {
                        "hostnames": {
                            "manage": [
                                "node1.example.com"
                            ],
                            "storage": [
                                "192.168.68.3"
                            ]
                        },
                        "zone": 1
                    },
                    "devices": [
                        "/dev/sdb",
                        "/dev/sdc",
                        "/dev/sdd",
                        "/dev/sde",
                        "/dev/sdf",
                        "/dev/sdg",
                        "/dev/sdh",
                        "/dev/sdi"
                    ]
                },
                {
                    "node": {
                        "hostnames": {
                            "manage": [
                                "node2.example.com"
                            ],
                            "storage": [
                                "192.168.68.2"
                            ]
                        },
                        "zone": 2
                    },
                    "devices": [
                        "/dev/sdb",
                        "/dev/sdc",
                        "/dev/sdd",
                        "/dev/sde",
                        "/dev/sdf",
                        "/dev/sdg",
                        "/dev/sdh",
                        "/dev/sdi"
                    ]
                },

.......
.......

{
    "clusters": [
        {
            "nodes": [
                {
                    "node": {
                        "hostnames": {
                            "manage": [
                                "node1.example.com"
                            ],
                            "storage": [
                                "192.168.68.3"
                            ]
                        },
                        "zone": 1
                    },
                    "devices": [
                        "/dev/sdb",
                        "/dev/sdc",
                        "/dev/sdd",
                        "/dev/sde",
                        "/dev/sdf",
                        "/dev/sdg",
                        "/dev/sdh",
                        "/dev/sdi"
                    ]
                },
                {
                    "node": {
                        "hostnames": {
                            "manage": [
                                "node2.example.com"
                            ],
                            "storage": [
                                "192.168.68.2"
                            ]
                        },
                        "zone": 2
                    },
                    "devices": [
                        "/dev/sdb",
                        "/dev/sdc",
                        "/dev/sdd",
                        "/dev/sde",
                        "/dev/sdf",
                        "/dev/sdg",
                        "/dev/sdh",
                        "/dev/sdi"
                    ]
                },

.......
.......

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where,

clusters: Array of clusters.
Each element on the array is a map which describes the cluster as follows.
- nodes: Array of OpenShift nodes that will host the Red Hat Gluster Storage container
  Each element on the array is a map which describes the node as follows
  - node: It is a map of the following elements:
    zone: The value represents the zone number that the node belongs to; the zone number is used by heketi for choosing optimum position of bricks by having replicas of bricks in different zones. Hence zone number is similar to a failure domain.
    hostnames: It is a map which lists the manage and storage addresses
    manage: It is the hostname/IP Address that is used by Heketi to communicate with the node
    storage: It is the IP address that is used by other OpenShift nodes to communicate with the node. Storage data traffic will use the interface attached to this IP. This must be the IP address and not the hostname because, in an OpenShift environment, Heketi considers this to be the endpoint too.
  - devices: Name of each disk to be added

Note

Copy the topology file from the default location to your location and then edit it:

cp /usr/share/heketi/topology-sample.json /<Path>/topology.json

# cp /usr/share/heketi/topology-sample.json /<Path>/topology.json

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Edit the topology file based on the Red Hat Gluster Storage pod hostname under the node.hostnames.manage section and node.hostnames.storage section with the IP address. For simplicity, the /usr/share/heketi/topology-sample.json file only sets up 4 nodes with 8 drives each.

Important

Heketi stores its database on a Red Hat Gluster Storage volume. In cases where the volume is down, the Heketi service does not respond due to the unavailability of the volume served by a disabled trusted storage pool. To resolve this issue, restart the trusted storage pool which contains the Heketi volume.

To deploy Container-Native Storage, refer Section 8.2.1, “Deploying Container-Native Storage”. To deploy Container-Ready Storage refer Section 8.2.2, “Deploying Container-Ready Storage”.

8.2.1. Deploying Container-Native Storage

Execute the following commands to deploy container-native storage:

Execute the following command on the client to deploy the heketi and Red Hat Gluster Storage pods:

cns-deploy -n <namespace> -g --admin-key <Key> topology.json

# cns-deploy -n <namespace> -g --admin-key <Key> topology.json

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Note

From Container-Native Storage 3.6, support for S3 compatible Object Store in Container-Native Storage is under technology preview. To deploy S3 compatible object store in Container-Native Storage see Step 1a below.
In the above command, the value for admin-key is the secret string for heketi admin user. The heketi administrator will have access to all APIs and commands. Default is to use no secret.
The BLOCK_HOST_SIZE parameter in cns-deploy controls the size (in GB) of the automatically created Red Hat Gluster Storage volumes hosting the gluster-block volumes (For more information, see Section 9.2, “Block Storage”). This default configuration will dynamically create block-hosting volumes of 500GB in size when more space is required. If you want to change this value then use --block-host in cns-deploy. For example:
```
cns-deploy -n storage-project -g --admin-key secret --block-host 1000 topology.json
```
```
# cns-deploy -n storage-project -g --admin-key secret --block-host 1000 topology.json
```
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For example:

cns-deploy -n storage-project -g --admin-key secret topology.json

# cns-deploy -n storage-project -g --admin-key secret topology.json

Welcome to the deployment tool for GlusterFS on Kubernetes and OpenShift.

Before getting started, this script has some requirements of the execution
environment and of the container platform that you should verify.

The client machine that will run this script must have:
 * Administrative access to an existing Kubernetes or OpenShift cluster
 * Access to a python interpreter 'python'

Each of the nodes that will host GlusterFS must also have appropriate firewall
rules for the required GlusterFS ports:
 * 111   - rpcbind (for glusterblock)
 * 2222  - sshd (if running GlusterFS in a pod)
 * 3260  - iSCSI targets (for glusterblock)
 * 24006 - glusterblockd
 * 24007 - GlusterFS Management
 * 24008 - GlusterFS RDMA
 * 49152 to 49251 - Each brick for every volume on the host requires its own
   port. For every new brick, one new port will be used starting at 49152. We
   recommend a default range of 49152-49251 on each host, though you can adjust
   this to fit your needs.

The following kernel modules must be loaded:
 * dm_snapshot
 * dm_mirror
 * dm_thin_pool
 * dm_multipath
 * target_core_user

For systems with SELinux, the following settings need to be considered:
 * virt_sandbox_use_fusefs should be enabled on each node to allow writing to
   remote GlusterFS volumes

In addition, for an OpenShift deployment you must:
 * Have 'cluster_admin' role on the administrative account doing the deployment
 * Add the 'default' and 'router' Service Accounts to the 'privileged' SCC
 * Have a router deployed that is configured to allow apps to access services
   running in the cluster

Do you wish to proceed with deployment?

[Y]es, [N]o? [Default: Y]: Y
Using OpenShift CLI.
Using namespace "storage-project".
Checking for pre-existing resources...
  GlusterFS pods ... not found.
  deploy-heketi pod ... not found.
  heketi pod ... not found.
  glusterblock-provisioner pod ... not found.
  gluster-s3 pod ... not found.
Creating initial resources ... template "deploy-heketi" created
serviceaccount "heketi-service-account" created
template "heketi" created
template "glusterfs" created
role "edit" added: "system:serviceaccount:storage-project:heketi-service-account"
OK
node "ip-172-18-5-29.ec2.internal" labeled
node "ip-172-18-8-205.ec2.internal" labeled
node "ip-172-18-6-100.ec2.internal" labeled
daemonset "glusterfs" created
Waiting for GlusterFS pods to start ... OK
secret "heketi-config-secret" created
secret "heketi-config-secret" labeled
service "deploy-heketi" created
route "deploy-heketi" created
deploymentconfig "deploy-heketi" created
Waiting for deploy-heketi pod to start ... OK
Creating cluster ... ID: 30cd12e60f860fce21e7e7457d07db36
Allowing file volumes on cluster.
Allowing block volumes on cluster.
Creating node ip-172-18-5-29.ec2.internal ... ID: 4077242c76e5f477a27c5c47247cb348
Adding device /dev/xvdc ... OK
Creating node ip-172-18-8-205.ec2.internal ... ID: dda0e7d568d7b2f76a7e7491cfc26dd3
Adding device /dev/xvdc ... OK
Creating node ip-172-18-6-100.ec2.internal ... ID: 30a1795ca515c85dca32b09be7a68733
Adding device /dev/xvdc ... OK
heketi topology loaded.
Saving /tmp/heketi-storage.json
secret "heketi-storage-secret" created
endpoints "heketi-storage-endpoints" created
service "heketi-storage-endpoints" created
job "heketi-storage-copy-job" created
service "heketi-storage-endpoints" labeled
deploymentconfig "deploy-heketi" deleted
route "deploy-heketi" deleted
service "deploy-heketi" deleted
job "heketi-storage-copy-job" deleted
pod "deploy-heketi-1-frjpt" deleted
secret "heketi-storage-secret" deleted
template "deploy-heketi" deleted
service "heketi" created
route "heketi" created
deploymentconfig "heketi" created
Waiting for heketi pod to start ... OK

heketi is now running and accessible via http://heketi-storage-project.cloudapps.mystorage.com . To run
administrative commands you can install 'heketi-cli' and use it as follows:

  # heketi-cli -s http://heketi-storage-project.cloudapps.mystorage.com --user admin --secret '<ADMIN_KEY>' cluster list

You can find it at https://github.com/heketi/heketi/releases . Alternatively,
use it from within the heketi pod:

  # /bin/oc -n storage-project exec -it <HEKETI_POD> -- heketi-cli -s http://localhost:8080 --user admin --secret '<ADMIN_KEY>' cluster list

For dynamic provisioning, create a StorageClass similar to this:

---
apiVersion: storage.k8s.io/v1beta1
kind: StorageClass
metadata:
  name: glusterfs-storage
provisioner: kubernetes.io/glusterfs
parameters:
  resturl: "http://heketi-storage-project.cloudapps.mystorage.com"

Ready to create and provide GlusterFS volumes.
clusterrole "glusterblock-provisioner-runner" created
serviceaccount "glusterblock-provisioner" created
clusterrolebinding "glusterblock-provisioner" created
deploymentconfig "glusterblock-provisioner-dc" created
Waiting for glusterblock-provisioner pod to start ... OK
Ready to create and provide Gluster block volumes.

Deployment complete!

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Note

For more information on the cns-deploy commands, refer to the man page of cns-deploy.

cns-deploy --help

# cns-deploy --help

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To deploy S3 compatible object store along with Heketi and Red Hat Gluster Storage pods, execute the following command:

 cns-deploy /opt/topology.json --deploy-gluster  --namespace <namespace> --yes --admin-key <key>  --log-file=<path/to/logfile> --object-account <object account name> --object-user <object user name>  --object-password <object user password> --verbose

#  cns-deploy /opt/topology.json --deploy-gluster  --namespace <namespace> --yes --admin-key <key>  --log-file=<path/to/logfile> --object-account <object account name> --object-user <object user name>  --object-password <object user password> --verbose

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object-account, object-user, and object-password are required credentials for deploying the gluster-s3 container. If any of these are missing, gluster-s3 container deployment will be skipped.

object-sc and object-capacity are optional parameters. Where, object-sc is used to specify a pre-existing StorageClass to use to create Red Hat Gluster Storage volumes to back the object store and object-capacity is the total capacity of the Red Hat Gluster Storage volume which will store the object data.

For example:

 cns-deploy /opt/topology.json --deploy-gluster  --namespace storage-project --yes --admin-key secret --log-file=/var/log/cns-deploy/444-cns-deploy.log --object-account testvolume --object-user adminuser --object-password itsmine --verbose

#  cns-deploy /opt/topology.json --deploy-gluster  --namespace storage-project --yes --admin-key secret --log-file=/var/log/cns-deploy/444-cns-deploy.log --object-account testvolume --object-user adminuser --object-password itsmine --verbose
Using OpenShift CLI.

Checking status of namespace matching 'storage-project':
storage-project   Active    56m
Using namespace "storage-project".
Checking for pre-existing resources...
  GlusterFS pods ... 
Checking status of pods matching '--selector=glusterfs=pod':
No resources found.
Timed out waiting for pods matching '--selector=glusterfs=pod'.
not found.
  deploy-heketi pod ... 
Checking status of pods matching '--selector=deploy-heketi=pod':
No resources found.
Timed out waiting for pods matching '--selector=deploy-heketi=pod'.
not found.
  heketi pod ... 
Checking status of pods matching '--selector=heketi=pod':
No resources found.
Timed out waiting for pods matching '--selector=heketi=pod'.
not found.
  glusterblock-provisioner pod ... 
Checking status of pods matching '--selector=glusterfs=block-provisioner-pod':
No resources found.
Timed out waiting for pods matching '--selector=glusterfs=block-provisioner-pod'.
not found.
  gluster-s3 pod ... 
Checking status of pods matching '--selector=glusterfs=s3-pod':
No resources found.
Timed out waiting for pods matching '--selector=glusterfs=s3-pod'.
not found.
Creating initial resources ... /usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/deploy-heketi-template.yaml 2>&1
template "deploy-heketi" created
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/heketi-service-account.yaml 2>&1
serviceaccount "heketi-service-account" created
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/heketi-template.yaml 2>&1
template "heketi" created
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/glusterfs-template.yaml 2>&1
template "glusterfs" created
/usr/bin/oc -n storage-project policy add-role-to-user edit system:serviceaccount:storage-project:heketi-service-account 2>&1
role "edit" added: "system:serviceaccount:storage-project:heketi-service-account"
/usr/bin/oc -n storage-project adm policy add-scc-to-user privileged -z heketi-service-account
OK
Marking 'dhcp46-122.lab.eng.blr.redhat.com' as a GlusterFS node.
/usr/bin/oc -n storage-project label nodes dhcp46-122.lab.eng.blr.redhat.com storagenode=glusterfs 2>&1
node "dhcp46-122.lab.eng.blr.redhat.com" labeled
Marking 'dhcp46-9.lab.eng.blr.redhat.com' as a GlusterFS node.
/usr/bin/oc -n storage-project label nodes dhcp46-9.lab.eng.blr.redhat.com storagenode=glusterfs 2>&1
node "dhcp46-9.lab.eng.blr.redhat.com" labeled
Marking 'dhcp46-134.lab.eng.blr.redhat.com' as a GlusterFS node.
/usr/bin/oc -n storage-project label nodes dhcp46-134.lab.eng.blr.redhat.com storagenode=glusterfs 2>&1
node "dhcp46-134.lab.eng.blr.redhat.com" labeled
Deploying GlusterFS pods.
/usr/bin/oc -n storage-project process -p NODE_LABEL=glusterfs glusterfs | /usr/bin/oc -n storage-project create -f - 2>&1
daemonset "glusterfs" created
Waiting for GlusterFS pods to start ... 
Checking status of pods matching '--selector=glusterfs=pod':
glusterfs-6fj2v   1/1       Running   0         52s
glusterfs-ck40f   1/1       Running   0         52s
glusterfs-kbtz4   1/1       Running   0         52s
OK
/usr/bin/oc -n storage-project create secret generic heketi-config-secret --from-file=private_key=/dev/null --from-file=./heketi.json --from-file=topology.json=/opt/topology.json
secret "heketi-config-secret" created
/usr/bin/oc -n storage-project label --overwrite secret heketi-config-secret glusterfs=heketi-config-secret heketi=config-secret
secret "heketi-config-secret" labeled
/usr/bin/oc -n storage-project process -p HEKETI_EXECUTOR=kubernetes -p HEKETI_FSTAB=/var/lib/heketi/fstab -p HEKETI_ADMIN_KEY= -p HEKETI_USER_KEY= deploy-heketi | /usr/bin/oc -n storage-project create -f - 2>&1
service "deploy-heketi" created
route "deploy-heketi" created
deploymentconfig "deploy-heketi" created
Waiting for deploy-heketi pod to start ... 
Checking status of pods matching '--selector=deploy-heketi=pod':
deploy-heketi-1-hf9rn   1/1       Running   0         2m
OK
Determining heketi service URL ... OK
/usr/bin/oc -n storage-project exec -it deploy-heketi-1-hf9rn -- heketi-cli -s http://localhost:8080 --user admin --secret '' topology load --json=/etc/heketi/topology.json 2>&1
Creating cluster ... ID: 252509038eb8568162ec5920c12bc243
Allowing file volumes on cluster.
Allowing block volumes on cluster.
Creating node dhcp46-122.lab.eng.blr.redhat.com ... ID: 73ad287ae1ef231f8a0db46422367c9a
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
Creating node dhcp46-9.lab.eng.blr.redhat.com ... ID: 0da1b20daaad2d5c57dbfc4f6ab78001
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
Creating node dhcp46-134.lab.eng.blr.redhat.com ... ID: 4b3b62fc0efd298dedbcdacf0b498e65
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
heketi topology loaded.
/usr/bin/oc -n storage-project exec -it deploy-heketi-1-hf9rn -- heketi-cli -s http://localhost:8080 --user admin --secret '' setup-openshift-heketi-storage --listfile=/tmp/heketi-storage.json --image rhgs3/rhgs-volmanager-rhel7:3.3.0-17 2>&1
Saving /tmp/heketi-storage.json
/usr/bin/oc -n storage-project exec -it deploy-heketi-1-hf9rn -- cat /tmp/heketi-storage.json | /usr/bin/oc -n storage-project create -f - 2>&1
secret "heketi-storage-secret" created
endpoints "heketi-storage-endpoints" created
service "heketi-storage-endpoints" created
job "heketi-storage-copy-job" created

Checking status of pods matching '--selector=job-name=heketi-storage-copy-job':
heketi-storage-copy-job-87v6n   0/1       Completed   0         7s
/usr/bin/oc -n storage-project label --overwrite svc heketi-storage-endpoints glusterfs=heketi-storage-endpoints heketi=storage-endpoints
service "heketi-storage-endpoints" labeled
/usr/bin/oc -n storage-project delete all,service,jobs,deployment,secret --selector="deploy-heketi" 2>&1
deploymentconfig "deploy-heketi" deleted
route "deploy-heketi" deleted
service "deploy-heketi" deleted
job "heketi-storage-copy-job" deleted
pod "deploy-heketi-1-hf9rn" deleted
secret "heketi-storage-secret" deleted
/usr/bin/oc -n storage-project delete dc,route,template --selector="deploy-heketi" 2>&1
template "deploy-heketi" deleted
/usr/bin/oc -n storage-project process -p HEKETI_EXECUTOR=kubernetes -p HEKETI_FSTAB=/var/lib/heketi/fstab -p HEKETI_ADMIN_KEY= -p HEKETI_USER_KEY= heketi | /usr/bin/oc -n storage-project create -f - 2>&1
service "heketi" created
route "heketi" created
deploymentconfig "heketi" created
Waiting for heketi pod to start ... 
Checking status of pods matching '--selector=heketi=pod':
heketi-1-zzblp   1/1       Running   0         31s
OK
Determining heketi service URL ... OK

heketi is now running and accessible via http://heketi-storage-project.cloudapps.mystorage.com . To run
administrative commands you can install 'heketi-cli' and use it as follows:

  # heketi-cli -s http://heketi-storage-project.cloudapps.mystorage.com --user admin --secret '<ADMIN_KEY>' cluster list

You can find it at https://github.com/heketi/heketi/releases . Alternatively,
use it from within the heketi pod:

  # /usr/bin/oc -n storage-project exec -it <HEKETI_POD> -- heketi-cli -s http://localhost:8080 --user admin --secret '<ADMIN_KEY>' cluster list

For dynamic provisioning, create a StorageClass similar to this:

---
apiVersion: storage.k8s.io/v1beta1
kind: StorageClass
metadata:
  name: glusterfs-storage
provisioner: kubernetes.io/glusterfs
parameters:
  resturl: "http://heketi-storage-project.cloudapps.mystorage.com"

Ready to create and provide GlusterFS volumes.
sed -e 's/\${NAMESPACE}/storage-project/' /usr/share/heketi/templates/glusterblock-provisioner.yaml | /usr/bin/oc -n storage-project create -f - 2>&1
clusterrole "glusterblock-provisioner-runner" created
serviceaccount "glusterblock-provisioner" created
clusterrolebinding "glusterblock-provisioner" created
deploymentconfig "glusterblock-provisioner-dc" created
Waiting for glusterblock-provisioner pod to start ... 
Checking status of pods matching '--selector=glusterfs=block-provisioner-pod':
glusterblock-provisioner-dc-1-xm6bv   1/1       Running   0         6s
OK
Ready to create and provide Gluster block volumes.
/usr/bin/oc -n storage-project create secret generic heketi-storage-project-admin-secret --from-literal=key= --type=kubernetes.io/glusterfs
secret "heketi-storage-project-admin-secret" created
/usr/bin/oc -n storage-project label --overwrite secret heketi-storage-project-admin-secret glusterfs=s3-heketi-storage-project-admin-secret gluster-s3=heketi-storage-project-admin-secret
secret "heketi-storage-project-admin-secret" labeled
sed -e 's/\${STORAGE_CLASS}/glusterfs-for-s3/' -e 's/\${HEKETI_URL}/heketi-storage-project.cloudapps.mystorage.com/' -e 's/\${NAMESPACE}/storage-project/' /usr/share/heketi/templates/gluster-s3-storageclass.yaml | /usr/bin/oc -n storage-project create -f - 2>&1
storageclass "glusterfs-for-s3" created
sed -e 's/\${STORAGE_CLASS}/glusterfs-for-s3/' -e 's/\${VOLUME_CAPACITY}/2Gi/' /usr/share/heketi/templates/gluster-s3-pvcs.yaml | /usr/bin/oc -n storage-project create -f - 2>&1
persistentvolumeclaim "gluster-s3-claim" created
persistentvolumeclaim "gluster-s3-meta-claim" created

Checking status of persistentvolumeclaims matching '--selector=glusterfs in (s3-pvc, s3-meta-pvc)':
gluster-s3-claim        Bound     pvc-35b6c1f0-9c65-11e7-9c8c-005056b3ded1   2Gi       RWX       glusterfs-for-s3   18s
gluster-s3-meta-claim   Bound     pvc-35b86e7a-9c65-11e7-9c8c-005056b3ded1   1Gi       RWX       glusterfs-for-s3   18s
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/gluster-s3-template.yaml 2>&1
template "gluster-s3" created
/usr/bin/oc -n storage-project process -p S3_ACCOUNT=testvolume -p S3_USER=adminuser -p S3_PASSWORD=itsmine gluster-s3 | /usr/bin/oc -n storage-project create -f - 2>&1
service "gluster-s3-service" created
route "gluster-s3-route" created
deploymentconfig "gluster-s3-dc" created
Waiting for gluster-s3 pod to start ... 
Checking status of pods matching '--selector=glusterfs=s3-pod':
gluster-s3-dc-1-x3x4q   1/1       Running   0         6s
OK
Ready to create and provide Gluster object volumes.

Deployment complete!

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Execute the following command to let the client communicate with the container:

export  HEKETI_CLI_SERVER=http://heketi-<project_name>.<sub_domain_name>

# export  HEKETI_CLI_SERVER=http://heketi-<project_name>.<sub_domain_name>

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For example:

export  HEKETI_CLI_SERVER=http://heketi-storage-project.cloudapps.mystorage.com

# export  HEKETI_CLI_SERVER=http://heketi-storage-project.cloudapps.mystorage.com

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To verify if Heketi is loaded with the topology execute the following command:

heketi-cli topology info

# heketi-cli topology info

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Note

The cns-deploy tool does not support scaling up of the cluster. To manually scale-up the cluster, refer Chapter 12, Managing Clusters

8.2.2. Deploying Container-Ready Storage

Execute the following commands to deploy container-ready storage:

To set a passwordless SSH to all Red Hat Gluster Storage nodes, execute the following command on the client for each of the Red Hat Gluster Storage node:
```
ssh-copy-id -i /root/.ssh/id_rsa root@<ip/hostname_rhgs node>
```
```
# ssh-copy-id -i /root/.ssh/id_rsa root@<ip/hostname_rhgs node>
```
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Execute the following command on the client to deploy heketi pod and to create a cluster of Red Hat Gluster Storage nodes:

cns-deploy -n <namespace> --admin-key <Key>  -s /root/.ssh/id_rsa topology.json

# cns-deploy -n <namespace> --admin-key <Key>  -s /root/.ssh/id_rsa topology.json

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Note

Support for S3 compatible Object Store is under technology preview. To deploy S3 compatible object store see Step 2a below.
In the above command, the value for admin-key is the secret string for heketi admin user. The heketi administrator will have access to all APIs and commands. Default is to use no secret.
The BLOCK_HOST_SIZE parameter in cns-deploy controls the size (in GB) of the automatically created Red Hat Gluster Storage volumes hosting the gluster-block volumes (For more information, see Section 9.2, “Block Storage”). This default configuration will dynamically create block-hosting volumes of 500GB in size when more space is required. If you want to change this value then use --block-host in cns-deploy. For example:
```
cns-deploy -n storage-project -g --admin-key secret --block-host 1000 topology.json
```
```
# cns-deploy -n storage-project -g --admin-key secret --block-host 1000 topology.json
```
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For example:

cns-deploy -n storage-project --admin-key secret -s /root/.ssh/id_rsa topology.json

# cns-deploy -n storage-project --admin-key secret -s /root/.ssh/id_rsa topology.json
Welcome to the deployment tool for GlusterFS on Kubernetes and OpenShift.

Before getting started, this script has some requirements of the execution
environment and of the container platform that you should verify.

The client machine that will run this script must have:
 * Administrative access to an existing Kubernetes or OpenShift cluster
 * Access to a python interpreter 'python'

Each of the nodes that will host GlusterFS must also have appropriate firewall
rules for the required GlusterFS ports:
 * 2222  - sshd (if running GlusterFS in a pod)
 * 24007 - GlusterFS Management
 * 24008 - GlusterFS RDMA
 * 49152 to 49251 - Each brick for every volume on the host requires its own
   port. For every new brick, one new port will be used starting at 49152. We
   recommend a default range of 49152-49251 on each host, though you can adjust
   this to fit your needs.

The following kernel modules must be loaded:
 * dm_snapshot
 * dm_mirror
 * dm_thin_pool

For systems with SELinux, the following settings need to be considered:
 * virt_sandbox_use_fusefs should be enabled on each node to allow writing to
   remote GlusterFS volumes

In addition, for an OpenShift deployment you must:
 * Have 'cluster_admin' role on the administrative account doing the deployment
 * Add the 'default' and 'router' Service Accounts to the 'privileged' SCC
 * Have a router deployed that is configured to allow apps to access services
   running in the cluster

Do you wish to proceed with deployment?

[Y]es, [N]o? [Default: Y]: y
Using OpenShift CLI.
Using namespace "storage-project".
Checking for pre-existing resources...
  GlusterFS pods ... not found.
  deploy-heketi pod ... not found.
  heketi pod ... not found.
Creating initial resources ... template "deploy-heketi" created
serviceaccount "heketi-service-account" created
template "heketi" created
role "edit" added: "system:serviceaccount:storage-project:heketi-service-account"
OK
secret "heketi-config-secret" created
secret "heketi-config-secret" labeled
service "deploy-heketi" created
route "deploy-heketi" created
deploymentconfig "deploy-heketi" created
Waiting for deploy-heketi pod to start ... OK
Creating cluster ... ID: 60bf06636eb4eb81d4e9be4b04cfce92
Allowing file volumes on cluster.
Allowing block volumes on cluster.
Creating node dhcp47-104.lab.eng.blr.redhat.com ... ID: eadc66f9d03563bcfc3db3fe636c34be
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
Creating node dhcp47-83.lab.eng.blr.redhat.com ... ID: 178684b0a0425f51b8f1a032982ffe4d
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
Creating node dhcp46-152.lab.eng.blr.redhat.com ... ID: 08cd7034ef7ac66499dc040d93cf4a93
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
heketi topology loaded.
Saving /tmp/heketi-storage.json
secret "heketi-storage-secret" created
endpoints "heketi-storage-endpoints" created
service "heketi-storage-endpoints" created
job "heketi-storage-copy-job" created
service "heketi-storage-endpoints" labeled
deploymentconfig "deploy-heketi" deleted
route "deploy-heketi" deleted
service "deploy-heketi" deleted
job "heketi-storage-copy-job" deleted
pod "deploy-heketi-1-30c06" deleted
secret "heketi-storage-secret" deleted
template "deploy-heketi" deleted
service "heketi" created
route "heketi" created
deploymentconfig "heketi" created
Waiting for heketi pod to start ... OK

heketi is now running and accessible via http://heketi-storage-project.cloudapps.mystorage.com . To run
administrative commands you can install 'heketi-cli' and use it as follows:

  # heketi-cli -s http://heketi-storage-project.cloudapps.mystorage.com --user admin --secret '<ADMIN_KEY>' cluster list

You can find it at https://github.com/heketi/heketi/releases . Alternatively,
use it from within the heketi pod:

  # /usr/bin/oc -n storage-project exec -it <HEKETI_POD> -- heketi-cli -s http://localhost:8080 --user admin --secret '<ADMIN_KEY>' cluster list

For dynamic provisioning, create a StorageClass similar to this:

---
apiVersion: storage.k8s.io/v1beta1
kind: StorageClass
metadata:
  name: glusterfs-storage
provisioner: kubernetes.io/glusterfs
parameters:
  resturl: "http://heketi-storage-project.cloudapps.mystorage.com"


Deployment complete!

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Note

For more information on the cns-deploy commands, refer to the man page of the cns-deploy.

cns-deploy --help

# cns-deploy --help

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To deploy S3 compatible object store along with Heketi and Red Hat Gluster Storage pods, execute the following command:

 cns-deploy /opt/topology.json --deploy-gluster  --namespace <namespace> --admin-key <Key> --yes --log-file=<path/to/logfile> --object-account <object account name> --object-user <object user name>  --object-password <object user password> --verbose

#  cns-deploy /opt/topology.json --deploy-gluster  --namespace <namespace> --admin-key <Key> --yes --log-file=<path/to/logfile> --object-account <object account name> --object-user <object user name>  --object-password <object user password> --verbose

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object-account, object-user, and object-password are required credentials for deploying the gluster-s3 container. If any of these are missing, gluster-s3 container deployment will be skipped.

For example:

 cns-deploy /opt/topology.json --deploy-gluster  --namespace storage-project --admin-key secret --yes --log-file=/var/log/cns-deploy/444-cns-deploy.log --object-account testvolume --object-user adminuser --object-password itsmine --verbose

#  cns-deploy /opt/topology.json --deploy-gluster  --namespace storage-project --admin-key secret --yes --log-file=/var/log/cns-deploy/444-cns-deploy.log --object-account testvolume --object-user adminuser --object-password itsmine --verbose
Using OpenShift CLI.

Checking status of namespace matching 'storage-project':
storage-project   Active    56m
Using namespace "storage-project".
Checking for pre-existing resources...
  GlusterFS pods ... 
Checking status of pods matching '--selector=glusterfs=pod':
No resources found.
Timed out waiting for pods matching '--selector=glusterfs=pod'.
not found.
  deploy-heketi pod ... 
Checking status of pods matching '--selector=deploy-heketi=pod':
No resources found.
Timed out waiting for pods matching '--selector=deploy-heketi=pod'.
not found.
  heketi pod ... 
Checking status of pods matching '--selector=heketi=pod':
No resources found.
Timed out waiting for pods matching '--selector=heketi=pod'.
not found.
  glusterblock-provisioner pod ... 
Checking status of pods matching '--selector=glusterfs=block-provisioner-pod':
No resources found.
Timed out waiting for pods matching '--selector=glusterfs=block-provisioner-pod'.
not found.
  gluster-s3 pod ... 
Checking status of pods matching '--selector=glusterfs=s3-pod':
No resources found.
Timed out waiting for pods matching '--selector=glusterfs=s3-pod'.
not found.
Creating initial resources ... /usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/deploy-heketi-template.yaml 2>&1
template "deploy-heketi" created
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/heketi-service-account.yaml 2>&1
serviceaccount "heketi-service-account" created
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/heketi-template.yaml 2>&1
template "heketi" created
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/glusterfs-template.yaml 2>&1
template "glusterfs" created
/usr/bin/oc -n storage-project policy add-role-to-user edit system:serviceaccount:storage-project:heketi-service-account 2>&1
role "edit" added: "system:serviceaccount:storage-project:heketi-service-account"
/usr/bin/oc -n storage-project adm policy add-scc-to-user privileged -z heketi-service-account
OK
Marking 'dhcp46-122.lab.eng.blr.redhat.com' as a GlusterFS node.
/usr/bin/oc -n storage-project label nodes dhcp46-122.lab.eng.blr.redhat.com storagenode=glusterfs 2>&1
node "dhcp46-122.lab.eng.blr.redhat.com" labeled
Marking 'dhcp46-9.lab.eng.blr.redhat.com' as a GlusterFS node.
/usr/bin/oc -n storage-project label nodes dhcp46-9.lab.eng.blr.redhat.com storagenode=glusterfs 2>&1
node "dhcp46-9.lab.eng.blr.redhat.com" labeled
Marking 'dhcp46-134.lab.eng.blr.redhat.com' as a GlusterFS node.
/usr/bin/oc -n storage-project label nodes dhcp46-134.lab.eng.blr.redhat.com storagenode=glusterfs 2>&1
node "dhcp46-134.lab.eng.blr.redhat.com" labeled
Deploying GlusterFS pods.
/usr/bin/oc -n storage-project process -p NODE_LABEL=glusterfs glusterfs | /usr/bin/oc -n storage-project create -f - 2>&1
daemonset "glusterfs" created
Waiting for GlusterFS pods to start ... 
Checking status of pods matching '--selector=glusterfs=pod':
glusterfs-6fj2v   1/1       Running   0         52s
glusterfs-ck40f   1/1       Running   0         52s
glusterfs-kbtz4   1/1       Running   0         52s
OK
/usr/bin/oc -n storage-project create secret generic heketi-config-secret --from-file=private_key=/dev/null --from-file=./heketi.json --from-file=topology.json=/opt/topology.json
secret "heketi-config-secret" created
/usr/bin/oc -n storage-project label --overwrite secret heketi-config-secret glusterfs=heketi-config-secret heketi=config-secret
secret "heketi-config-secret" labeled
/usr/bin/oc -n storage-project process -p HEKETI_EXECUTOR=kubernetes -p HEKETI_FSTAB=/var/lib/heketi/fstab -p HEKETI_ADMIN_KEY= -p HEKETI_USER_KEY= deploy-heketi | /usr/bin/oc -n storage-project create -f - 2>&1
service "deploy-heketi" created
route "deploy-heketi" created
deploymentconfig "deploy-heketi" created
Waiting for deploy-heketi pod to start ... 
Checking status of pods matching '--selector=deploy-heketi=pod':
deploy-heketi-1-hf9rn   1/1       Running   0         2m
OK
Determining heketi service URL ... OK
/usr/bin/oc -n storage-project exec -it deploy-heketi-1-hf9rn -- heketi-cli -s http://localhost:8080 --user admin --secret '' topology load --json=/etc/heketi/topology.json 2>&1
Creating cluster ... ID: 252509038eb8568162ec5920c12bc243
Allowing file volumes on cluster.
Allowing block volumes on cluster.
Creating node dhcp46-122.lab.eng.blr.redhat.com ... ID: 73ad287ae1ef231f8a0db46422367c9a
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
Creating node dhcp46-9.lab.eng.blr.redhat.com ... ID: 0da1b20daaad2d5c57dbfc4f6ab78001
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
Creating node dhcp46-134.lab.eng.blr.redhat.com ... ID: 4b3b62fc0efd298dedbcdacf0b498e65
Adding device /dev/sdd ... OK
Adding device /dev/sde ... OK
Adding device /dev/sdf ... OK
heketi topology loaded.
/usr/bin/oc -n storage-project exec -it deploy-heketi-1-hf9rn -- heketi-cli -s http://localhost:8080 --user admin --secret '' setup-openshift-heketi-storage --listfile=/tmp/heketi-storage.json --image rhgs3/rhgs-volmanager-rhel7:3.3.0-17 2>&1
Saving /tmp/heketi-storage.json
/usr/bin/oc -n storage-project exec -it deploy-heketi-1-hf9rn -- cat /tmp/heketi-storage.json | /usr/bin/oc -n storage-project create -f - 2>&1
secret "heketi-storage-secret" created
endpoints "heketi-storage-endpoints" created
service "heketi-storage-endpoints" created
job "heketi-storage-copy-job" created

Checking status of pods matching '--selector=job-name=heketi-storage-copy-job':
heketi-storage-copy-job-87v6n   0/1       Completed   0         7s
/usr/bin/oc -n storage-project label --overwrite svc heketi-storage-endpoints glusterfs=heketi-storage-endpoints heketi=storage-endpoints
service "heketi-storage-endpoints" labeled
/usr/bin/oc -n storage-project delete all,service,jobs,deployment,secret --selector="deploy-heketi" 2>&1
deploymentconfig "deploy-heketi" deleted
route "deploy-heketi" deleted
service "deploy-heketi" deleted
job "heketi-storage-copy-job" deleted
pod "deploy-heketi-1-hf9rn" deleted
secret "heketi-storage-secret" deleted
/usr/bin/oc -n storage-project delete dc,route,template --selector="deploy-heketi" 2>&1
template "deploy-heketi" deleted
/usr/bin/oc -n storage-project process -p HEKETI_EXECUTOR=kubernetes -p HEKETI_FSTAB=/var/lib/heketi/fstab -p HEKETI_ADMIN_KEY= -p HEKETI_USER_KEY= heketi | /usr/bin/oc -n storage-project create -f - 2>&1
service "heketi" created
route "heketi" created
deploymentconfig "heketi" created
Waiting for heketi pod to start ... 
Checking status of pods matching '--selector=heketi=pod':
heketi-1-zzblp   1/1       Running   0         31s
OK
Determining heketi service URL ... OK

heketi is now running and accessible via http://heketi-storage-project.cloudapps.mystorage.com . To run
administrative commands you can install 'heketi-cli' and use it as follows:

  # heketi-cli -s http://heketi-storage-project.cloudapps.mystorage.com --user admin --secret '<ADMIN_KEY>' cluster list

You can find it at https://github.com/heketi/heketi/releases . Alternatively,
use it from within the heketi pod:

  # /usr/bin/oc -n storage-project exec -it <HEKETI_POD> -- heketi-cli -s http://localhost:8080 --user admin --secret '<ADMIN_KEY>' cluster list

For dynamic provisioning, create a StorageClass similar to this:

---
apiVersion: storage.k8s.io/v1beta1
kind: StorageClass
metadata:
  name: glusterfs-storage
provisioner: kubernetes.io/glusterfs
parameters:
  resturl: "http://heketi-storage-project.cloudapps.mystorage.com"

Ready to create and provide GlusterFS volumes.
sed -e 's/\${NAMESPACE}/storage-project/' /usr/share/heketi/templates/glusterblock-provisioner.yaml | /usr/bin/oc -n storage-project create -f - 2>&1
clusterrole "glusterblock-provisioner-runner" created
serviceaccount "glusterblock-provisioner" created
clusterrolebinding "glusterblock-provisioner" created
deploymentconfig "glusterblock-provisioner-dc" created
Waiting for glusterblock-provisioner pod to start ... 
Checking status of pods matching '--selector=glusterfs=block-provisioner-pod':
glusterblock-provisioner-dc-1-xm6bv   1/1       Running   0         6s
OK
Ready to create and provide Gluster block volumes.
/usr/bin/oc -n storage-project create secret generic heketi-storage-project-admin-secret --from-literal=key= --type=kubernetes.io/glusterfs
secret "heketi-storage-project-admin-secret" created
/usr/bin/oc -n storage-project label --overwrite secret heketi-storage-project-admin-secret glusterfs=s3-heketi-storage-project-admin-secret gluster-s3=heketi-storage-project-admin-secret
secret "heketi-storage-project-admin-secret" labeled
sed -e 's/\${STORAGE_CLASS}/glusterfs-for-s3/' -e 's/\${HEKETI_URL}/heketi-storage-project.cloudapps.mystorage.com/' -e 's/\${NAMESPACE}/storage-project/' /usr/share/heketi/templates/gluster-s3-storageclass.yaml | /usr/bin/oc -n storage-project create -f - 2>&1
storageclass "glusterfs-for-s3" created
sed -e 's/\${STORAGE_CLASS}/glusterfs-for-s3/' -e 's/\${VOLUME_CAPACITY}/2Gi/' /usr/share/heketi/templates/gluster-s3-pvcs.yaml | /usr/bin/oc -n storage-project create -f - 2>&1
persistentvolumeclaim "gluster-s3-claim" created
persistentvolumeclaim "gluster-s3-meta-claim" created

Checking status of persistentvolumeclaims matching '--selector=glusterfs in (s3-pvc, s3-meta-pvc)':
gluster-s3-claim        Bound     pvc-35b6c1f0-9c65-11e7-9c8c-005056b3ded1   2Gi       RWX       glusterfs-for-s3   18s
gluster-s3-meta-claim   Bound     pvc-35b86e7a-9c65-11e7-9c8c-005056b3ded1   1Gi       RWX       glusterfs-for-s3   18s
/usr/bin/oc -n storage-project create -f /usr/share/heketi/templates/gluster-s3-template.yaml 2>&1
template "gluster-s3" created
/usr/bin/oc -n storage-project process -p S3_ACCOUNT=testvolume -p S3_USER=adminuser -p S3_PASSWORD=itsmine gluster-s3 | /usr/bin/oc -n storage-project create -f - 2>&1
service "gluster-s3-service" created
route "gluster-s3-route" created
deploymentconfig "gluster-s3-dc" created
Waiting for gluster-s3 pod to start ... 
Checking status of pods matching '--selector=glusterfs=s3-pod':
gluster-s3-dc-1-x3x4q   1/1       Running   0         6s
OK
Ready to create and provide Gluster object volumes.

Deployment complete!

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Brick multiplexing is a feature that allows adding multiple bricks into one process. This reduces resource consumption, and allows us to run more bricks than before with the same memory consumption. Execute the following commands on one of the Red Hat Gluster Storage nodes on each cluster to enable brick-multiplexing:

Execute the following command to enable brick multiplexing:

gluster vol set all cluster.brick-multiplex on

# gluster vol set all cluster.brick-multiplex on

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For example:

gluster vol set all cluster.brick-multiplex on

# gluster vol set all cluster.brick-multiplex on
Brick-multiplexing is supported only for container workloads (CNS/CRS). Also it is advised to make sure that either all volumes are in stopped state or no bricks are running before this option is modified.Do you still want to continue? (y/n) y
volume set: success

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Restart the heketidb volumes:

gluster vol stop heketidbstorage

# gluster vol stop heketidbstorage
Stopping volume will make its data inaccessible. Do you want to continue? (y/n) y
volume stop: heketidbstorage: success

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gluster vol start heketidbstorage

# gluster vol start heketidbstorage
volume start: heketidbstorage: success

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Execute the following command to let the client communicate with the container:

export  HEKETI_CLI_SERVER=http://heketi-<project_name>.<sub_domain_name>

# export  HEKETI_CLI_SERVER=http://heketi-<project_name>.<sub_domain_name>

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For example:

export  HEKETI_CLI_SERVER=http://heketi-storage-project.cloudapps.mystorage.com

# export  HEKETI_CLI_SERVER=http://heketi-storage-project.cloudapps.mystorage.com

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To verify if Heketi is loaded with the topology execute the following command:

heketi-cli topology info

# heketi-cli topology info

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Note

The cns-deploy tool does not support scaling up of the cluster. To manually scale-up the cluster, refer Chapter 12, Managing Clusters

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8.2. Deploying Containerized Red Hat Gluster Storage Solutions

8.2.1. Deploying Container-Native Storage

8.2.2. Deploying Container-Ready Storage

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