No CNI configuration file in /etc/cni/net.d/ openshift

When openshift / kubernetes cluster is bootsrapped and all the nodes are ready and available, sometimes worker or master nodes gives error “No CNI configuration file in /etc/cni/net.d/ condition remains after CNI has been configured”.

# oc get nodes
NAME         STATUS   ROLES    AGE     VERSION
okd-comp-1   NotReady    worker   3h44m   v1.18.3
okd-comp-2   Ready    worker   3h28m   v1.18.3
okd4-cp-1    Ready    master   8h      v1.18.3
okd4-cp-2    Ready    master   8h      v1.18.3
okd4-cp-3    Ready    master   8h      v1.18.3

Fix: No CNI configuration file in /etc/cni/net.d/

Login to the worker node and restart crio and kubelet services. Restarting crio should do the job but we can also restart kubelet services so that it can reflect the status on master.

#ssh [email protected] (ip of affected worker node) 
ssh can be done from infra or service node only.

 #sudo systemctl restart crio
 #sudo systemctl restart kubelet
 #sudo systemctl status crio 


#sudo systemctl status crio
● crio.service - MCO environment configuration
     Loaded: loaded (/usr/lib/systemd/system/crio.service; disabled; vendor preset: disabled)
    Drop-In: /etc/systemd/system/crio.service.d
             └─10-mco-default-env.conf
     Active: active (running) since Wed 2022-02-16 06:53:16 UTC; 9s ago
       Docs: https://github.com/cri-o/cri-o
   Main PID: 384108 (crio)
      Tasks: 51
     Memory: 71.1M
        CPU: 18.992s
     CGroup: /system.slice/crio.service
             ├─384108 /usr/bin/crio
             ├─387108 /usr/libexec/crio/conmon -c 86690fd7c93c8fe6dc0fff9529e50784f9d2345727f5a7cd4d9801ee32b7f1cc -n k8s_prometheus_prometheus-k8s->
             ├─387163 /usr/libexec/crio/conmon -c 3eeedde9d69f99e39c276a62ba198aefbd3351b4e953fa1990976acb772055da -n k8s_sdn_sdn-jc5nh_openshift-sd>
             ├─387166 /usr/bin/runc --root=/run/runc exec --pid-file /tmp/pidfile322794636 --process /tmp/exec-process-294713758 -d 3eeedde9d69f99e3>
             ├─387185 sh -c if [ -x "$(command -v curl)" ]; then curl http://localhost:9090/-/healthy; elif [ -x "$(command -v wget)" ]; then wget ->
             ├─387216 /usr/bin/runc init
             └─387228 curl http://localhost:9090/-/healthy

Feb 16 06:53:22 okd-comp-2 crio[384108]: time="2022-02-16 06:53:22.802868044Z" level=info msg="Exec'd [grpc_health_probe -addr=localhost:50051] in o>
Feb 16 06:53:22 okd-comp-2 crio[384108]: time="2022-02-16 06:53:22.856736835Z" level=info msg="Exec'd [sh -c if [ -x \"$(command -v curl)\" ]; then >
Feb 16 06:53:23 okd-comp-2 crio[384108]: time="2022-02-16 06:53:23.498883827Z" level=info msg="Exec'd [sh -c if [ -x \"$(command -v curl)\" ]; then >
Feb 16 06:53:23 okd-comp-2 crio[384108]: time="2022-02-16 06:53:23.956889084Z" level=info msg="Exec'd [sh -c if [ -x \"$(command -v curl)\" ]; then

 #oc get nodes

NAME         STATUS   ROLES    AGE     VERSION
okd-comp-1   Ready    worker   3h44m   v1.18.3
okd-comp-2   Ready    worker   3h28m   v1.18.3
okd4-cp-1    Ready    master   8h      v1.18.3
okd4-cp-2    Ready    master   8h      v1.18.3
okd4-cp-3    Ready    master   8h      v1.18.3