17 KiB
AWX on Single Node K3s
An example implementation of AWX on single node K3s using AWX Operator, with easy-to-use simplified configuration with ownership of data and passwords.
- Accesible over HTTPS from remote host
- All data will be stored under
/data - Fixed (configurable) passwords for AWX and PostgreSQL
- Fixed (configurable) versions of AWX and PostgreSQL
Table of Contents
Environment
- Tested on:
- CentOS Stream 8 (Minimal)
- K3s v1.22.6+k3s1
- Products that will be deployed:
- AWX Operator 0.16.1
- AWX 19.5.1
- PostgreSQL 12
References
- K3s - Lightweight Kubernetes
- INSTALL.md on ansible/awx @19.5.1
- README.md on ansible/awx-operator @0.16.1
Procedure
Prepare CentOS 8 host
Disable Firewalld. This is recommended by K3s.
sudo systemctl disable firewalld --now
Install required packages to deploy AWX Operator and AWX.
sudo dnf install -y git make
Install K3s
Install K3s with --write-kubeconfig-mode 644 to make config file (/etc/rancher/k3s/k3s.yaml) readable by non-root user.
curl -sfL https://get.k3s.io | sh -s - --write-kubeconfig-mode 644
Install AWX Operator
Install specified version of AWX Operator. Note that this procedure is applicable only for AWX Operator 0.14.0 or later. If you want to deploy 0.13.0 or earlier version of AWX Operator, refer 📝Tips: Deploy older version of AWX Operator.
Note that 0.16.0 doesn't work correctly due to the issue (ansible/awx-operator#762), use 0.16.1 instead.
cd ~
git clone https://github.com/ansible/awx-operator.git
cd awx-operator
git checkout 0.16.1
Export the name of the namespace where you want to deploy AWX Operator as the environment variable NAMESPACE and run make deploy. The default namespace is awx.
export NAMESPACE=awx
make deploy
The AWX Operator will be deployed to the namespace you specified.
$ kubectl -n awx get all
NAME READY STATUS RESTARTS AGE
pod/awx-operator-controller-manager-68d787cfbd-kjfg7 2/2 Running 0 16s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/awx-operator-controller-manager-metrics-service ClusterIP 10.43.150.245 <none> 8443/TCP 16s
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/awx-operator-controller-manager 1/1 1 1 16s
NAME DESIRED CURRENT READY AGE
replicaset.apps/awx-operator-controller-manager-68d787cfbd 1 1 1 16s
Prepare required files
Clone this repository and change directory.
cd ~
git clone https://github.com/kurokobo/awx-on-k3s.git
cd awx-on-k3s
Generate a Self-Signed certificate. Note that IP address can't be specified. If you want to use a certificate from public ACME CA such as Let's Encrypt or ZeroSSL instead of Self-Signed certificate, follow the guide on 📁 Use SSL Certificate from Public ACME CA first and come back to this step when done.
AWX_HOST="awx.example.com"
openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -out ./base/tls.crt -keyout ./base/tls.key -subj "/CN=${AWX_HOST}/O=${AWX_HOST}" -addext "subjectAltName = DNS:${AWX_HOST}"
Modify hostname in base/awx.yaml.
...
spec:
...
ingress_type: ingress
ingress_tls_secret: awx-secret-tls
hostname: awx.example.com 👈👈👈
...
Modify two passwords in base/kustomization.yaml.
...
- name: awx-postgres-configuration
type: Opaque
literals:
- host=awx-postgres
- port=5432
- database=awx
- username=awx
- password=Ansible123! 👈👈👈
- type=managed
- name: awx-admin-password
type: Opaque
literals:
- password=Ansible123! 👈👈👈
...
Prepare directories for Persistent Volumes defined in base/pv.yaml.
sudo mkdir -p /data/postgres
sudo mkdir -p /data/projects
sudo chown 1000:0 /data/projects
Deploy AWX
Deploy AWX, this takes few minutes to complete.
kubectl apply -k base
To monitor the progress of the deployment, check the logs of deployments/awx-operator-controller-manager:
kubectl -n awx logs -f deployments/awx-operator-controller-manager -c awx-manager
When the deployment completes successfully, the logs end with:
$ kubectl -n awx logs -f deployments/awx-operator-controller-manager -c awx-manager
...
----- Ansible Task Status Event StdOut (awx.ansible.com/v1beta1, Kind=AWX, awx/awx) -----
PLAY RECAP *********************************************************************
localhost : ok=64 changed=0 unreachable=0 failed=0 skipped=43 rescued=0 ignored=0
----------
Required objects has been deployed next to AWX Operator in awx namespace.
$ kubectl -n awx get awx,all,ingress,secrets
NAME AGE
awx.awx.ansible.com/awx 4m17s
NAME READY STATUS RESTARTS AGE
pod/awx-operator-controller-manager-68d787cfbd-j6k7z 2/2 Running 0 7m43s
pod/awx-postgres-0 1/1 Running 0 4m6s
pod/awx-84d5c45999-h7xm4 4/4 Running 0 3m59s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/awx-operator-controller-manager-metrics-service ClusterIP 10.43.134.67 <none> 8443/TCP 7m43s
service/awx-postgres ClusterIP None <none> 5432/TCP 4m6s
service/awx-service ClusterIP 10.43.232.137 <none> 80/TCP 4m
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/awx-operator-controller-manager 1/1 1 1 7m43s
deployment.apps/awx 1/1 1 1 3m59s
NAME DESIRED CURRENT READY AGE
replicaset.apps/awx-operator-controller-manager-68d787cfbd 1 1 1 7m43s
replicaset.apps/awx-84d5c45999 1 1 1 3m59s
NAME READY AGE
statefulset.apps/awx-postgres 1/1 4m6s
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress.networking.k8s.io/awx-ingress <none> awx.example.com 192.168.0.100 80, 443 4m
NAME TYPE DATA AGE
secret/default-token-6tp55 kubernetes.io/service-account-token 3 7m43s
secret/awx-operator-controller-manager-token-sz6wq kubernetes.io/service-account-token 3 7m43s
secret/awx-admin-password Opaque 1 4m17s
secret/awx-postgres-configuration Opaque 6 4m17s
secret/awx-secret-tls kubernetes.io/tls 2 4m17s
secret/awx-app-credentials Opaque 3 4m2s
secret/awx-token-jfndh kubernetes.io/service-account-token 3 4m2s
secret/awx-secret-key Opaque 1 4m13s
secret/awx-broadcast-websocket Opaque 1 4m9s
Now your AWX is available at https://awx.example.com/ or the hostname you specified.
At this point, however, AWX can be accessed via HTTP as well as HTTPS. If you want to redirect HTTP to HTTPS, see 📝Tips: Redirect HTTP to HTTPS.
Backing up and Restoring using AWX Operator
The AWX Operator 0.10.0 or later has the ability to backup and restore AWX in easy way.
Backing up using AWX Operator
Prepare for Backup
Prepare directories for Persistent Volumes to store backup files that defined in backup/pv.yaml.
sudo mkdir -p /data/backup
Then deploy Persistent Volume and Persistent Volume Claim.
kubectl apply -k backup
Invoke Manual Backup
Modify the name of the AWXBackup object in backup/awxbackup.yaml.
...
kind: AWXBackup
metadata:
name: awxbackup-2021-06-06 👈👈👈
namespace: awx
...
Then invoke backup by applying this manifest file.
kubectl apply -f backup/awxbackup.yaml
To monitor the progress of the deployment, check the logs of deployments/awx-operator-controller-manager:
kubectl -n awx logs -f deployments/awx-operator-controller-manager -c awx-manager
When the backup completes successfully, the logs end with:
$ kubectl -n awx logs -f deployments/awx-operator-controller-manager -c awx-manager
...
----- Ansible Task Status Event StdOut (awx.ansible.com/v1beta1, Kind=AWX, awx/awx) -----
PLAY RECAP *********************************************************************
localhost : ok=3 changed=0 unreachable=0 failed=0 skipped=7 rescued=0 ignored=0
----------
This will create AWXBackup object in the namespace and also create backup files in the Persistent Volume. In this example those files are available at /data/backup.
$ kubectl -n awx get awxbackup
NAME AGE
awxbackup-2021-06-06 6m47s
$ ls -l /data/backup/
total 0
drwxr-xr-x. 2 root root 59 Jun 5 06:51 tower-openshift-backup-2021-06-06-10:51:49
$ ls -l /data/backup/tower-openshift-backup-2021-06-06-10\:51\:49/
total 736
-rw-r--r--. 1 root root 749 Jun 6 06:51 awx_object
-rw-r--r--. 1 root root 482 Jun 6 06:51 secrets.yml
-rw-------. 1 systemd-coredump root 745302 Jun 6 06:51 tower.db
Note that if you are using AWX Operator 0.12.0 or earlier, the contents of the Secret that passed through ingress_tls_secret parameter will not be included in this backup files. If necessary, get a dump of this Secret, or keep original certificate file and key file. In 0.13.0 or later, this secret is included in the backup file therefore you can ignore this step.
kubectl get secret awx-secret-tls -n awx -o yaml > awx-secret-tls.yaml
Restoring using AWX Operator
To perfom restoration, you need to have AWX Operator running on Kubernetes. If you are planning to restore to a new environment, first prepare Kubernetes and AWX Operator by referring to the instructions on this page.
It is strongly recommended that the version of AWX Operator is the same as the version when the backup was taken. This is because the structure of the backup files differs between versions and may not be compatible. If you have upgraded AWX Operator after taking the backup, it is recommended to downgrade it for the restore. To deploy 0.13.0 or earlier version of AWX Operator, refer 📝Tips: Deploy older version of AWX Operator
Prepare for Restore
If your PV, PVC, and Secret still exist, no preparation is required.
If you are restoring the entire AWX to a new environment, create the PVs and PVCs first to be restored.
sudo mkdir -p /data/postgres
sudo mkdir -p /data/projects
sudo chown 1000:0 /data/projects
Then deploy Persistent Volume and Persistent Volume Claim.
kubectl apply -k restore
Invoke Manual Restore
Modify the name of the AWXRestore object in restore/awxrestore.yaml.
...
kind: AWXRestore
metadata:
name: awxrestore-2021-06-06 👈👈👈
namespace: awx
...
If you want to restore from AWXBackup object, specify its name in restore/awxrestore.yaml.
...
# Parameters to restore from AWXBackup object
backup_pvc_namespace: awx
backup_name: awxbackup-2021-06-06 👈👈👈
...
If the AWXBackup object no longer exists, place the backup files and specify the name of the PVC and directory in restore/awxrestore.yaml.
...
# Parameters to restore from existing files on PVC (without AWXBackup object)
backup_pvc_namespace: awx
backup_pvc: awx-backup-claim 👈👈👈
backup_dir: /backups/tower-openshift-backup-2021-06-06-10:51:49 👈👈👈
...
Then invoke restore by applying this manifest file.
kubectl apply -f restore/awxrestore.yaml
To monitor the progress of the deployment, check the logs of deployments/awx-operator-controller-manager:
kubectl -n awx logs -f deployments/awx-operator-controller-manager -c awx-manager
When the restore complete successfully, the logs end with:
$ kubectl -n awx logs -f deployments/awx-operator-controller-manager -c awx-manager
...
----- Ansible Task Status Event StdOut (awx.ansible.com/v1beta1, Kind=AWX, awx/awx) -----
PLAY RECAP *********************************************************************
localhost : ok=66 changed=0 unreachable=0 failed=0 skipped=41 rescued=0 ignored=0
----------
This will create AWXRestore object in the namespace, and now your AWX is restored.
$ kubectl -n awx get awxrestore
NAME AGE
awxrestore-2021-06-06 137m
Note that if you are using AWX Operator 0.12.0 or earlier, the Secret for TLS should be manually restored (or create newly using original certificate and key file). This step is not required for 0.13.0 or later.
kubectl apply -f awx-secret-tls.yaml
Additional Guides
- 📁 Deploy Private Git Repository on Kubernetes
- To use AWX with SCM, this repository includes the manifests to deploy Gitea.
- See 📝
git/README.mdfor instructions.
- 📁 Deploy Private Container Registry on Kubernetes
- To use Execution Environments in AWX (AWX-EE), we have to push the container image built with
ansible-builderto the container registry. - If we don't want to push our container images to Docker Hub or other cloud services, we can deploy a private container registry on K3s.
- See 📝
registry/README.mdfor instructions.
- To use Execution Environments in AWX (AWX-EE), we have to push the container image built with
- 📁 Deploy Private Galaxy NG on Docker or Kubernetes (Experimental)
- Deploy our own Galaxy NG instance.
- Note that the containerized implementation of Galaxy NG is not supported at this time.
- All information on the page is for development, testing and study purposes only.
- See 📝
galaxy/README.mdfor instructions.
- 📁 Use SSL Certificate from Public ACME CA
- To use a certificate from public ACME CA such as Let's Encrypt or ZeroSSL instead of Self-Signed certificate.
- See 📝
acme/README.mdfor instructions.
- 📁 Use Ansible Builder
- Use Ansible Builder to build our own Execution Environment.
- See 📝
builder/README.mdfor instructions.
- 📁 Use Ansible Runner
- Use Ansible Runner to run playbook using Execution Environment.
- See 📝
runner/README.mdfor instructions.
- 📁 Use Customized Pod Specification for your Execution Environment
- We can customize the specification of the Pod of the Execution Environment using Container Group.
- See 📝
containergroup/README.mdfor instructions.
- 📁 Tips