Get Started with Cozystack

Get Started with Cozystack.

This tutorial shows you how to bootstrap Cozystack on a few servers in your infrastructure

Before you begin

Cozystack deployment

You need 3 physical servers or VMs with nested virtualisation:

CPU: 4 cores
CPU model: host
RAM: 8-16 GB
HDD1: 32 GB
HDD2: 100GB (raw)

And in case of PXE installation one management VM or physical server connected to the same network. Any Linux system installed on it (eg. Ubuntu should be enough)

⚠️ This VM should support x86-64-v2 architecture, the most probably you can achieve this by setting cpu model to host

Objectives

Bootstrap Cozystack on three servers
Configure Storage
Configure Networking interconnection
Access Cozystack dashboard
Deploy etcd, ingress and monitoring stack

Talos Linux Installation

Follow one of the guide to boot your machines with Talos Linux image:

PXE - for installation using temporary DHCP and PXE servers running as Docker containers.
ISO - for installation using ISO-file.
Hetzner - for installation on Hetzner servers.

Bootstrap cluster

Follow the guide to bootstrap your Talos Linux cluster using one of the following tools:

talos-bootstrap - for a quick walkthrough
Talm - for declarative cluster management

Save admin kubeconfig to access your Kubernetes cluster:

cp -i kubeconfig ~/.kube/config

Check connection:

kubectl get ns

example output:

NAME              STATUS   AGE
default           Active   7m56s
kube-node-lease   Active   7m56s
kube-public       Active   7m56s
kube-system       Active   7m56s

⚠️ All nodes should currently show as READY: False, don’t worry about that, this is because you disabled the default CNI plugin in the previous step. Cozystack will install it’s own CNI-plugin on the next step.

Install Cozystack

write config for cozystack, refer to bundles documentation for configuration parameters

⚠️ please make sure that you written the same setting specified in patch.yaml and patch-controlplane.yaml files.

cat > cozystack-config.yaml <<\EOT
apiVersion: v1
kind: ConfigMap
metadata:
  name: cozystack
  namespace: cozy-system
data:
  bundle-name: "paas-full"
  ipv4-pod-cidr: "10.244.0.0/16"
  ipv4-pod-gateway: "10.244.0.1"
  ipv4-svc-cidr: "10.96.0.0/16"
  ipv4-join-cidr: "100.64.0.0/16"
  root-host: example.org
  api-server-endpoint: https://192.168.100.10:6443
EOT

root-host is used as the main domain for all services created under Cozystack, such as the dashboard, Grafana, Keycloak, etc.
api-server-endpoint is primarily used for generating kubeconfig files for your users. It is recommended to use globally accessible IP addresses instead of local ones.

Create namespace and install Cozystack system components:

kubectl create ns cozy-system
kubectl apply -f cozystack-config.yaml
kubectl apply -f https://github.com/aenix-io/cozystack/raw/v0.20.2/manifests/cozystack-installer.yaml

Currently Cozystack does not separate control-plane and worker nodes, so if your nodes have control-plane taint, pods will stuck in Pending status.

You have to remove control-plane taint from the nodes:

kubectl taint nodes --all node-role.kubernetes.io/control-plane-

(optional) You can track the logs of installer:

kubectl logs -n cozy-system deploy/cozystack -f

Wait for a while, then check the status of installation:

kubectl get hr -A

Wait until all releases become to Ready state:

NAMESPACE                        NAME                        AGE    READY   STATUS
cozy-cert-manager                cert-manager                4m1s   True    Release reconciliation succeeded
cozy-cert-manager                cert-manager-issuers        4m1s   True    Release reconciliation succeeded
cozy-cilium                      cilium                      4m1s   True    Release reconciliation succeeded
cozy-cluster-api                 capi-operator               4m1s   True    Release reconciliation succeeded
cozy-cluster-api                 capi-providers              4m1s   True    Release reconciliation succeeded
cozy-dashboard                   dashboard                   4m1s   True    Release reconciliation succeeded
cozy-grafana-operator            grafana-operator            4m1s   True    Release reconciliation succeeded
cozy-kamaji                      kamaji                      4m1s   True    Release reconciliation succeeded
cozy-kubeovn                     kubeovn                     4m1s   True    Release reconciliation succeeded
cozy-kubevirt-cdi                kubevirt-cdi                4m1s   True    Release reconciliation succeeded
cozy-kubevirt-cdi                kubevirt-cdi-operator       4m1s   True    Release reconciliation succeeded
cozy-kubevirt                    kubevirt                    4m1s   True    Release reconciliation succeeded
cozy-kubevirt                    kubevirt-operator           4m1s   True    Release reconciliation succeeded
cozy-linstor                     linstor                     4m1s   True    Release reconciliation succeeded
cozy-linstor                     piraeus-operator            4m1s   True    Release reconciliation succeeded
cozy-mariadb-operator            mariadb-operator            4m1s   True    Release reconciliation succeeded
cozy-metallb                     metallb                     4m1s   True    Release reconciliation succeeded
cozy-monitoring                  monitoring                  4m1s   True    Release reconciliation succeeded
cozy-postgres-operator           postgres-operator           4m1s   True    Release reconciliation succeeded
cozy-rabbitmq-operator           rabbitmq-operator           4m1s   True    Release reconciliation succeeded
cozy-redis-operator              redis-operator              4m1s   True    Release reconciliation succeeded
cozy-telepresence                telepresence                4m1s   True    Release reconciliation succeeded
cozy-victoria-metrics-operator   victoria-metrics-operator   4m1s   True    Release reconciliation succeeded
tenant-root                      tenant-root                 4m1s   True    Release reconciliation succeeded

Configure Storage

Setup alias to access LINSTOR:

alias linstor='kubectl exec -n cozy-linstor deploy/linstor-controller -- linstor'

list your nodes

linstor node list

example output:

+-------------------------------------------------------+
| Node | NodeType  | Addresses                 | State  |
|=======================================================|
| srv1 | SATELLITE | 192.168.100.11:3367 (SSL) | Online |
| srv2 | SATELLITE | 192.168.100.12:3367 (SSL) | Online |
| srv3 | SATELLITE | 192.168.100.13:3367 (SSL) | Online |
+-------------------------------------------------------+

list empty devices:

linstor physical-storage list

example output:

+--------------------------------------------+
| Size         | Rotational | Nodes          |
|============================================|
| 107374182400 | True       | srv3[/dev/sdb] |
|              |            | srv1[/dev/sdb] |
|              |            | srv2[/dev/sdb] |
+--------------------------------------------+

create storage pools:

linstor ps cdp zfs srv1 /dev/sdb --pool-name data --storage-pool data
linstor ps cdp zfs srv2 /dev/sdb --pool-name data --storage-pool data
linstor ps cdp zfs srv3 /dev/sdb --pool-name data --storage-pool data

linstor ps cdp lvm srv1 /dev/sdb --pool-name data --storage-pool data
linstor ps cdp lvm srv2 /dev/sdb --pool-name data --storage-pool data
linstor ps cdp lvm srv3 /dev/sdb --pool-name data --storage-pool data

list storage pools:

linstor sp l

example output:

+-------------------------------------------------------------------------------------------------------------------------------------+
| StoragePool          | Node | Driver   | PoolName | FreeCapacity | TotalCapacity | CanSnapshots | State | SharedName                |
|=====================================================================================================================================|
| DfltDisklessStorPool | srv1 | DISKLESS |          |              |               | False        | Ok    | srv1;DfltDisklessStorPool |
| DfltDisklessStorPool | srv2 | DISKLESS |          |              |               | False        | Ok    | srv2;DfltDisklessStorPool |
| DfltDisklessStorPool | srv3 | DISKLESS |          |              |               | False        | Ok    | srv3;DfltDisklessStorPool |
| data                 | srv1 | ZFS      | data     |    96.41 GiB |     99.50 GiB | True         | Ok    | srv1;data                 |
| data                 | srv2 | ZFS      | data     |    96.41 GiB |     99.50 GiB | True         | Ok    | srv2;data                 |
| data                 | srv3 | ZFS      | data     |    96.41 GiB |     99.50 GiB | True         | Ok    | srv3;data                 |
+-------------------------------------------------------------------------------------------------------------------------------------+

Create default storage classes:

kubectl create -f- <<EOT
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: local
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
provisioner: linstor.csi.linbit.com
parameters:
  linstor.csi.linbit.com/storagePool: "data"
  linstor.csi.linbit.com/layerList: "storage"
  linstor.csi.linbit.com/allowRemoteVolumeAccess: "false"
volumeBindingMode: WaitForFirstConsumer
allowVolumeExpansion: true
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: replicated
provisioner: linstor.csi.linbit.com
parameters:
  linstor.csi.linbit.com/storagePool: "data"
  linstor.csi.linbit.com/autoPlace: "3"
  linstor.csi.linbit.com/layerList: "drbd storage"
  linstor.csi.linbit.com/allowRemoteVolumeAccess: "true"
  property.linstor.csi.linbit.com/DrbdOptions/auto-quorum: suspend-io
  property.linstor.csi.linbit.com/DrbdOptions/Resource/on-no-data-accessible: suspend-io
  property.linstor.csi.linbit.com/DrbdOptions/Resource/on-suspended-primary-outdated: force-secondary
  property.linstor.csi.linbit.com/DrbdOptions/Net/rr-conflict: retry-connect
volumeBindingMode: Immediate
allowVolumeExpansion: true
EOT

list storageclasses:

kubectl get storageclasses

example output:

NAME              PROVISIONER              RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
local (default)   linstor.csi.linbit.com   Delete          WaitForFirstConsumer   true                   11m
replicated        linstor.csi.linbit.com   Delete          Immediate              true                   11m

Configure Networking interconnection

If you plan to use an external load balancer or a client-side balancer to access your services through the same IPs for your nodes, you can skip this step

To access your services select the range of unused IPs, eg. 192.168.100.200-192.168.100.250

⚠️ these IPs should be from the same network as nodes or they should have all necessary routes for them.

Configure MetalLB to use and announce this range:

kubectl create -f- <<EOT
---
apiVersion: metallb.io/v1beta1
kind: L2Advertisement
metadata:
  name: cozystack
  namespace: cozy-metallb
spec:
  ipAddressPools:
  - cozystack
---
apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  name: cozystack
  namespace: cozy-metallb
spec:
  addresses:
  - 192.168.100.200-192.168.100.250
  autoAssign: true
  avoidBuggyIPs: false
EOT

Setup basic applications

Set etcd, monitoring and ingress to enabled in your tenant-root

kubectl patch -n tenant-root tenants.apps.cozystack.io root --type=merge -p '{"spec":{
  "ingress": true,
  "monitoring": true,
  "etcd": true,
  "isolated": true
}}'

If you don’t use external load balancer, specify all your external IPs of your nodes for the ingress controller:

kubectl patch -n tenant-root ingresses.apps.cozystack.io ingress --type=merge -p '{"spec":{
  "externalIPs": [
    "192.168.100.11",
    "192.168.100.12",
    "192.168.100.13"
  ]
}}'

Final steps

Check persistent volumes provisioned:

kubectl get pvc -n tenant-root

example output:

NAME                                     STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   VOLUMEATTRIBUTESCLASS   AGE
data-etcd-0                              Bound    pvc-4cbd29cc-a29f-453d-b412-451647cd04bf   10Gi       RWO            local          <unset>                 2m10s
data-etcd-1                              Bound    pvc-1579f95a-a69d-4a26-bcc2-b15ccdbede0d   10Gi       RWO            local          <unset>                 115s
data-etcd-2                              Bound    pvc-907009e5-88bf-4d18-91e7-b56b0dbfb97e   10Gi       RWO            local          <unset>                 91s
grafana-db-1                             Bound    pvc-7b3f4e23-228a-46fd-b820-d033ef4679af   10Gi       RWO            local          <unset>                 2m41s
grafana-db-2                             Bound    pvc-ac9b72a4-f40e-47e8-ad24-f50d843b55e4   10Gi       RWO            local          <unset>                 113s
vmselect-cachedir-vmselect-longterm-0    Bound    pvc-622fa398-2104-459f-8744-565eee0a13f1   2Gi        RWO            local          <unset>                 2m21s
vmselect-cachedir-vmselect-longterm-1    Bound    pvc-fc9349f5-02b2-4e25-8bef-6cbc5cc6d690   2Gi        RWO            local          <unset>                 2m21s
vmselect-cachedir-vmselect-shortterm-0   Bound    pvc-7acc7ff6-6b9b-4676-bd1f-6867ea7165e2   2Gi        RWO            local          <unset>                 2m41s
vmselect-cachedir-vmselect-shortterm-1   Bound    pvc-e514f12b-f1f6-40ff-9838-a6bda3580eb7   2Gi        RWO            local          <unset>                 2m40s
vmstorage-db-vmstorage-longterm-0        Bound    pvc-e8ac7fc3-df0d-4692-aebf-9f66f72f9fef   10Gi       RWO            local          <unset>                 2m21s
vmstorage-db-vmstorage-longterm-1        Bound    pvc-68b5ceaf-3ed1-4e5a-9568-6b95911c7c3a   10Gi       RWO            local          <unset>                 2m21s
vmstorage-db-vmstorage-shortterm-0       Bound    pvc-cee3a2a4-5680-4880-bc2a-85c14dba9380   10Gi       RWO            local          <unset>                 2m41s
vmstorage-db-vmstorage-shortterm-1       Bound    pvc-d55c235d-cada-4c4a-8299-e5fc3f161789   10Gi       RWO            local          <unset>                 2m41s

Check all pods are running:

kubectl get pod -n tenant-root

example output:

NAME                                           READY   STATUS    RESTARTS       AGE
etcd-0                                         1/1     Running   0              2m1s
etcd-1                                         1/1     Running   0              106s
etcd-2                                         1/1     Running   0              82s
grafana-db-1                                   1/1     Running   0              119s
grafana-db-2                                   1/1     Running   0              13s
grafana-deployment-74b5656d6-5dcvn             1/1     Running   0              90s
grafana-deployment-74b5656d6-q5589             1/1     Running   1 (105s ago)   111s
root-ingress-controller-6ccf55bc6d-pg79l       2/2     Running   0              2m27s
root-ingress-controller-6ccf55bc6d-xbs6x       2/2     Running   0              2m29s
root-ingress-defaultbackend-686bcbbd6c-5zbvp   1/1     Running   0              2m29s
vmalert-vmalert-644986d5c-7hvwk                2/2     Running   0              2m30s
vmalertmanager-alertmanager-0                  2/2     Running   0              2m32s
vmalertmanager-alertmanager-1                  2/2     Running   0              2m31s
vminsert-longterm-75789465f-hc6cz              1/1     Running   0              2m10s
vminsert-longterm-75789465f-m2v4t              1/1     Running   0              2m12s
vminsert-shortterm-78456f8fd9-wlwww            1/1     Running   0              2m29s
vminsert-shortterm-78456f8fd9-xg7cw            1/1     Running   0              2m28s
vmselect-longterm-0                            1/1     Running   0              2m12s
vmselect-longterm-1                            1/1     Running   0              2m12s
vmselect-shortterm-0                           1/1     Running   0              2m31s
vmselect-shortterm-1                           1/1     Running   0              2m30s
vmstorage-longterm-0                           1/1     Running   0              2m12s
vmstorage-longterm-1                           1/1     Running   0              2m12s
vmstorage-shortterm-0                          1/1     Running   0              2m32s
vmstorage-shortterm-1                          1/1     Running   0              2m31s

Now you can get public IP of ingress controller:

kubectl get svc -n tenant-root root-ingress-controller

example output:

NAME                      TYPE           CLUSTER-IP     EXTERNAL-IP       PORT(S)                      AGE
root-ingress-controller   LoadBalancer   10.96.16.141   192.168.100.200   80:31632/TCP,443:30113/TCP   3m33s

Cozystack Dashboard

If you want to access dashboard via root-ingress controller, you can enable this option:

kubectl patch -n tenant-root ingresses.apps.cozystack.io ingress --type=merge -p '{"spec":{
  "dashboard": true
}}'

Use dashboard.example.org (under 192.168.100.200) to access system dashboard, where example.org is your domain specified for tenant-root

Get authentification token from tenant-root:

kubectl get secret -n tenant-root tenant-root -o go-template='{{ printf "%s\n" (index .data "token" | base64decode) }}'

Grafana

Use grafana.example.org (under 192.168.100.200) to access system monitoring, where example.org is your domain specified for tenant-root

to get password:

kubectl get secret -n tenant-root grafana-admin-password -o go-template='{{ printf "%s\n" (index .data "password" | base64decode) }}'

Now you can consider enabling OIDC

Last modified 2024-12-13: Prepare release v0.20.2 (6440dca)