“connectivity-check” to test connectivity between pods. It is recommended to create a separate namespace for this. kubectl create ns cilium-test Deploy the check with: kubectl apply -n cilium-test -f Variables Specify the namespace in which Cilium is installed as CILIUM_NAMESPACE environment variable. Subsequent commands reference this environment variable. export CILIUM_NAMESPACE=kube-system Enable with the following command: helm upgrade cilium cilium/cilium --version 1.9.18 \ --namespace $CILIUM_NAMESPACE \ --reuse-values \ --set hubble.listenAddress=":4244" \ --set hubble.relay.enabled=true

“connectivity-check” to test connectivity between pods. It is recommended to create a separate namespace for this. kubectl create ns cilium-test Deploy the check with: kubectl apply -n cilium-test -f NetworkPolicy applies to them: kubectl get pods --all-namespaces -o custom- columns=NAMESPACE:.metadata.namespace,NAME:.metadata.name,HOSTNETWORK:. spec.hostNetwork --no-headers=true | grep '' | “connectivity-check” to test connectivity between pods. It is recommended to create a separate namespace for this. kubectl create ns cilium-test Deploy the check with: kubectl apply -n cilium-test -f

ℹ Monitor aggregation detected, will skip some flow validation steps � [k8s-cluster] Creating namespace for connectivity check... (...) ----------------------------------------------------------------------- Cilium: Deploy Cilium release via Helm: helm install cilium cilium/cilium --version 1.10.20 \ --namespace kube-system GKE To install Cilium on Google Kubernetes Engine (GKE) [https://cloud.google.com/kubernetes- $NATIVE_CIDR Deploy Cilium release via Helm: helm install cilium cilium/cilium --version 1.10.20 \ --namespace kube-system \ --set nodeinit.enabled=true \ --set nodeinit.reconfigureKubelet=true \ --set

Variables Specify the namespace in which Cilium is installed as CILIUM_NAMESPACE environment variable. Subsequent commands reference this environment variable. export CILIUM_NAMESPACE=kube-system Install com/cilium/hubble.git --branch v0.5 cd hubble/install/kubernetes helm template hubble \ --namespace $CILIUM_NAMESPACE \ --set metrics.enabled="{dns,drop,tcp,flow,port- distribution,icmp,http}" \ --set NetworkPolicy applies to them: kubectl get pods --all-namespaces -o custom- columns=NAMESPACE:.metadata.namespace,NAME:.metadata.name,HOSTNETWORK:. spec.hostNetwork --no-headers=true | grep '' |

Monitor aggregation detected, will skip some flow validation steps � [k8s-cluster] Creating namespace for connectivity check... (...) ----------------------------------------------------------------------- Cilium: Deploy Cilium release via Helm: helm install cilium cilium/cilium --version 1.11.20 \ --namespace kube-system GKE To install Cilium on Google Kubernetes Engine (GKE) [https://cloud.google.com/kubernetes- $NATIVE_CIDR Deploy Cilium release via Helm: helm install cilium cilium/cilium --version 1.11.20 \ --namespace kube-system \ --set nodeinit.enabled=true \ --set nodeinit.reconfigureKubelet=true \ --set

the Helm templates. Generate the required YAML file and deploy it: helm template cilium \ --namespace kube-system \ --set global.etcd.enabled=true \ --set global.etcd.managed=true \ > cilium.yaml Troubleshooting Make sure that kube-dns or coredns is running and healthy in the kube- system namespace. A functioning Kubernetes DNS is strictly required in order for Cilium to resolve the ClusterIP based on the Helm templates. Change the etcd endpoints accordingly: helm template cilium \ --namespace kube-system \ --set global.etcd.enabled=true \ --set global.etcd.endpoints[0]=http://etcd-endpoint1:2379

Troubleshooting Make sure that kube-dns or coredns is running and healthy in the kube-system namespace. A func�oning Kubernetes DNS is strictly required in order for Cilium to resolve the ClusterIP of the Installation Verify that Cilium pods were started on each of your worker nodes kubectl --namespace kube-system get ds cilium NAME DESIRED CURRENT READY NODE-SELECTOR AGE cilium Enable kubelet to operate in CNI mode Install the Cilium CNI configura�on file kubectl create namespace cilium kubectl -n cilium apply -f https://raw.githubusercontent.com/cilium/cilium/ Restart kube-dns

facilitate running in a container. This support is expected to land upstream soon. Note that 'cgroup namespace' support is also required. This is available in the 16.04 kernel as well as in the 4.6 upstream hierarchical, with privileged tasks in a parent namespace being able to map its ids into child namespaces. By default every task on the host runs in the initial user namespace, where the full range of ids is mapped /proc/self/uid_map and /proc/self/gid_map, which both will show "0 0 4294967295" when read from the initial user namespace. As of Ubuntu 14.04, when new users are created they are by default offered a range of userids.

hierarchical, with privileged tasks in a parent namespace being able to map its ids into child namespaces. By default every task on the host runs in the initial user namespace, where the full range of ids is mapped /proc/self/uid_map and /proc/self/gid_map, which both will show 0 0 4294967295 when read from the initial user namespace. As of Ubuntu 14.04, when new users are created they are by default offered a range of UIDs. The located under /var/lib/lxc for the root user. Networking By default LXC creates a private network namespace for each container, which includes a layer 2 networking stack. Containers usually connect to the

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