Automation Suite on EKS/AKS installation guide

Creating a priority class​

1. Save the following configuration as a YAML file:
   assignment

   ---
   apiVersion: scheduling.k8s.io/v1
   kind: PriorityClass
   metadata:
     name: uipath-high-priority
   value: 1000000
   preemptionPolicy: PreemptLowerPriority
   globalDefault: false
   description: "Priority class for uipath applications"
   ---
   apiVersion: scheduling.k8s.io/v1
   kind: PriorityClass
   metadata:
     name: uipath-high-priority
   value: 1000000
   preemptionPolicy: PreemptLowerPriority
   globalDefault: false
   description: "Priority class for uipath applications"
   

2. Run the following command, replacing the <file_name.yaml> placeholder with the actual name of your YAML file:
   assignment

   kubectl apply -f <file_name.yaml>
   kubectl apply -f <file_name.yaml>
   

Labeling the namespaces​

kubectl label namespace <uipath> uipath-injection=enabled
kubectl label namespace <uipath> istio-injection=enabled
kubectl label namespace <uipath> uipath-injection=enabled
kubectl label namespace <uipath> istio-injection=enabled

Configuring CoreDNS​

1. Capture the existing coredns configmap from the running cluster:

   assignment

   kubectl get configmap -n kube-system coredns -o yaml > coredns-config.yaml
   kubectl get configmap -n kube-system coredns -o yaml > coredns-config.yaml
   

2. Edit the coredns-config.yaml file to append the fqdn rewrite to the config.

   1. Rename the configmap to coredns-custom.
   2. Add the following code block to your coredns-config.yaml file. Make sure the code block comes before the kubernetes cluster.local in-addr.arpa ip6.arp line.
      assignment

      rewrite stop {
         name exact <cluster-fqdn> istio-ingressgateway.istio-system.svc.cluster.local
      }
      rewrite stop {
         name exact <cluster-fqdn> istio-ingressgateway.istio-system.svc.cluster.local
      }
      

   3. Replace <cluster-fqdn> with the actual value.

   Once you have completed these steps, your file should resemble the following sample:

   assignment

      apiVersion: v1
                data:
                Corefile: |
                .:53 {
                errors
                log
                health
                rewrite stop {
                name exact mycluster.autosuite.com istio-ingressgateway.istio-system.svc.cluster.local
                }
                kubernetes cluster.local in-addr.arpa ip6.arpa {
                pods insecure
                fallthrough in-addr.arpa ip6.arpa
                }
                prometheus :9153
                forward . /etc/resolv.conf
                cache 30
                loop
                reload
                loadbalance
                }
                kind: ConfigMap
                metadata:
                name: coredns-custom
                namespace: kube-system
      apiVersion: v1
                data:
                Corefile: |
                .:53 {
                errors
                log
                health
                rewrite stop {
                name exact mycluster.autosuite.com istio-ingressgateway.istio-system.svc.cluster.local
                }
                kubernetes cluster.local in-addr.arpa ip6.arpa {
                pods insecure
                fallthrough in-addr.arpa ip6.arpa
                }
                prometheus :9153
                forward . /etc/resolv.conf
                cache 30
                loop
                reload
                loadbalance
                }
                kind: ConfigMap
                metadata:
                name: coredns-custom
                namespace: kube-system
   

3. Create the coredns-custom configmap:

   assignment

   kubectl apply -f coredns-config.yaml
   kubectl apply -f coredns-config.yaml
   

4. Replace the volume reference from coredns to coredns-custom in the coredns deployment in kube-system namespace:

   assignment

   volumes:
                   - emptyDir: {}
                   name: tmp
                   - configMap:
                   defaultMode: 420
                   items:
                   - key: Corefile
                   path: Corefile
                   name: coredns-custom
                   name: config-volume
   volumes:
                   - emptyDir: {}
                   name: tmp
                   - configMap:
                   defaultMode: 420
                   items:
                   - key: Corefile
                   path: Corefile
                   name: coredns-custom
                   name: config-volume
   

5. Restart the coredns deployment and ensure the coredns pods are up and running without any issues:

   assignment

   kubectl rollout restart deployment -n kube-system coredns
   kubectl rollout restart deployment -n kube-system coredns