The reference urls:
https://github.com/kubernetes/kubernetes/blob/master/docs/getting-started-guides/ubuntu-calico.md
https://github.com/projectcalico/calico-docker/blob/master/docs/kubernetes/KubernetesIntegration.md
I have 3 hosts: 10.11.151.97, 10.11.151.100, 10.11.150.101. Unfortunately, there is no internet access in all 3 hosts. Following the guide, I build the Kubernetes cluster in ‘bash command‘ mode, rather than the ‘service mode‘ described in the reference.
10.11.151.97 is the kubernetes master, the other two are its nodes.
1, Run Etcd Cluster
etcd_token=kb3-etcd-cluster local_name=kbetcd0 local_ip=10.11.151.97 local_peer_port=4010 local_client_port1=4011 local_client_port2=4012 node1_name=kbetcd1 node1_ip=10.11.151.100 node1_port=4010 node2_name=kbetcd2 node2_ip=10.11.151.101 node2_port=4010 ./etcd -name $local_name -initial-advertise-peer-urls http://$local_ip:$local_peer_port -listen-peer-urls http://0.0.0.0:$local_peer_port -listen-client-urls http://0.0.0.0:$local_client_port1,http://0.0.0.0:$local_client_port2 -advertise-client-urls http://$local_ip:$local_client_port1,http://$local_ip:$local_client_port2 -initial-cluster-token $etcd_token -initial-cluster $local_name=http://$local_ip:$local_peer_port,$node1_name=http://$node1_ip:$node1_port,$node2_name=http://$node2_ip:$node2_port -initial-cluster-state new &
In each host, run etcd as this command since the etcd should run in cluster mode. If succeed, you should see ‘published {Name: *} to cluster *‘ output.
2, Setup Master
2.1 Start Kubernetes
Run kube-apiserver:
./kube-apiserver --logtostderr=true --v=0 --etcd_servers=http://127.0.0.1:4012 --kubelet_port=10250 --allow_privileged=false --service-cluster-ip-range=172.16.0.0/12 --insecure-bind-address=0.0.0.0 --insecure-port=8080 2>&1 > apiserver.out &
Run kube-controller-manager:
./kube-controller-manager --logtostderr=true --v=0 --master=http://tc-151-97:8080 --cloud-provider="" 2>&1 >controller.out &
Run kube-scheduler:
./kube-scheduler --logtostderr=true --v=0 --master=http://tc-151-97:8080 2>&1 > scheduler.out &
2.2 Install calico in on Master
sudo ETCD_AUTHORITY=127.0.0.1:4011 ./calicoctl node
3, Setup Nodes
3.1 Install calico
For the nodes have no internet access, I downloaded the calico plugin mannual from:
https://github.com/projectcalico/calico-kubernetes/releases/tag/v0.6.0
Move the plugin to the kubernetes plugin directory:
sudo mv calico_kubernetes /usr/libexec/kubernetes/kubelet-plugins/net/exec/calico/calico
Start the calico:
sudo ETCD_AUTHORITY=127.0.0.1:4011 ./calicoctl node
3.2 Start kubelet with calico network:
Start the kubelet with --network-plugin parameter:
./kube-proxy --logtostderr=true --v=0 --master=http://tc-151-97:8080 --proxy-mode=iptables & ./kubelet --logtostderr=true --v=0 --api_servers=http://tc-151-97:8080 --address=0.0.0.0 —-network-plugin=calico --allow_privileged=false --pod-infra-container-image=10.11.150.76:5000/kubernetes/pause:latest &
Here is the kubelet command output:
I1124 15:11:52.226324 28368 server.go:808] Watching apiserver I1124 15:11:52.393448 28368 plugins.go:56] Registering credential provider: .dockercfg I1124 15:11:52.398087 28368 server.go:770] Started kubelet E1124 15:11:52.398190 28368 kubelet.go:756] Image garbage collection failed: unable to find data for container / I1124 15:11:52.398165 28368 server.go:72] Starting to listen on 0.0.0.0:10250 W1124 15:11:52.401695 28368 kubelet.go:775] Failed to move Kubelet to container "/kubelet": write /sys/fs/cgroup/memory/kubelet/memory.swappiness: invalid argument I1124 15:11:52.401748 28368 kubelet.go:777] Running in container "/kubelet" I1124 15:11:52.497377 28368 factory.go:194] System is using systemd I1124 15:11:52.610946 28368 kubelet.go:885] Node tc-151-100 was previously registered I1124 15:11:52.734788 28368 factory.go:236] Registering Docker factory I1124 15:11:52.735851 28368 factory.go:93] Registering Raw factory I1124 15:11:52.969060 28368 manager.go:1006] Started watching for new ooms in manager I1124 15:11:52.969114 28368 oomparser.go:199] OOM parser using kernel log file: "/var/log/messages" I1124 15:11:52.970296 28368 manager.go:250] Starting recovery of all containers I1124 15:11:53.148967 28368 manager.go:255] Recovery completed I1124 15:11:53.240408 28368 manager.go:104] Starting to sync pod status with apiserver I1124 15:11:53.240439 28368 kubelet.go:1953] Starting kubelet main sync loop.
I do not know wheather the kubelet is run right. Someone tell me how to verify it ?
I do the same process in another node.
3, Create some pods and test.
apiVersion: v1 kind: ReplicationController metadata: name: test-1 spec: replicas: 1 template: metadata: labels: app: test-1 spec: containers: - name: iperf image: 10.11.150.76:5000/openxxs/iperf:1.2 nodeSelector: kubernetes.io/hostname: tc-151-100 --- apiVersion: v1 kind: ReplicationController metadata: name: test-2 spec: replicas: 1 template: metadata: labels: app: test-2 spec: containers: - name: iperf image: 10.11.150.76:5000/openxxs/iperf:1.2 nodeSelector: kubernetes.io/hostname: tc-151-100 --- apiVersion: v1 kind: ReplicationController metadata: name: test-3 spec: replicas: 1 template: metadata: labels: app: test-3 spec: containers: - name: iperf image: 10.11.150.76:5000/openxxs/iperf:1.2 nodeSelector: kubernetes.io/hostname: tc-151-101 --- apiVersion: v1 kind: ReplicationController metadata: name: test-4 spec: replicas: 1 template: metadata: labels: app: test-4 spec: containers: - name: iperf image: 10.11.150.76:5000/openxxs/iperf:1.2 nodeSelector: kubernetes.io/hostname: tc-151-101
./kubectl create -f test.yaml
This command create 4 pods, 2 for 10.11.151.100, 2 for 10.11.151.101.
[@tc_151_97 /home/domeos/openxxs/bin]# ./kubectl get pods NAME READY STATUS RESTARTS AGE test-1-1ztr2 1/1 Running 0 5m test-2-8p2sr 1/1 Running 0 5m test-3-1hkwa 1/1 Running 0 5m test-4-jbdbq 1/1 Running 0 5m
[@tc-151-100 /home/domeos/openxxs/bin]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 6dfc83ec1d12 10.11.150.76:5000/openxxs/iperf:1.2 "/block" 6 minutes ago Up 6 minutes k8s_iperf.a4ede594_test-1-1ztr2_default_f1b54d0b-927c-11e5-a77a-782bcb435e46_ca4496d0 78087a93da00 10.11.150.76:5000/openxxs/iperf:1.2 "/block" 6 minutes ago Up 6 minutes k8s_iperf.a4ede594_test-2-8p2sr_default_f1c2da7d-927c-11e5-a77a-782bcb435e46_330d815c f80a1474f4c4 10.11.150.76:5000/kubernetes/pause:latest "/pause" 6 minutes ago Up 6 minutes k8s_POD.34f4dfd2_test-2-8p2sr_default_f1c2da7d-927c-11e5-a77a-782bcb435e46_af7199c0 eb14879757e6 10.11.150.76:5000/kubernetes/pause:latest "/pause" 6 minutes ago Up 6 minutes k8s_POD.34f4dfd2_test-1-1ztr2_default_f1b54d0b-927c-11e5-a77a-782bcb435e46_af2cc1c3 8accff535ff9 calico/node:latest "/sbin/start_runit" 27 minutes ago Up 27 minutes calico-node
In the node 10.11.151.100, the calico status:
[@tc-151-100 ~/baoquanwang/calico-docker-utils]$ sudo ETCD_AUTHORITY=127.0.0.1:4011 ./calicoctl status calico-node container is running. Status: Up 24 minutes Running felix version 1.2.0 IPv4 BGP status +---------------+-------------------+-------+----------+------------------------------------------+ | Peer address | Peer type | State | Since | Info | +---------------+-------------------+-------+----------+------------------------------------------+ | 10.11.151.101 | node-to-node mesh | start | 07:18:44 | Connect Socket: Connection refused | | 10.11.151.97 | node-to-node mesh | start | 07:07:40 | Active Socket: Connection refused | +---------------+-------------------+-------+----------+------------------------------------------+ IPv6 BGP status +--------------+-----------+-------+-------+------+ | Peer address | Peer type | State | Since | Info | +--------------+-----------+-------+-------+------+ +--------------+-----------+-------+-------+------+
However, in another node 10.11.151.101:
[@tc-151-101 ~/baoquanwang/calico-docker-utils]$ sudo ETCD_AUTHORITY=127.0.0.1:4011 ./calicoctl status calico-node container is running. Status: Up 2 minutes Running felix version 1.2.0 IPv4 BGP status Unable to connect to server control socket (/etc/service/bird/bird.ctl): Connection refused IPv6 BGP status +--------------+-----------+-------+-------+------+ | Peer address | Peer type | State | Since | Info | +--------------+-----------+-------+-------+------+ +--------------+-----------+-------+-------+------+
What has happened ?
And that, there is no calico ip route in both nodes:
[@tc-151-100 ~/baoquanwang/calico-docker-utils]$ ip route default via 10.11.151.254 dev em1 proto static metric 1024 10.11.151.0/24 dev em1 proto kernel scope link src 10.11.151.100 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.42.1
[@tc-151-101 ~/baoquanwang/calico-docker-utils]$ ip route default via 10.11.151.254 dev em1 proto static metric 1024 10.11.151.0/24 dev em1 proto kernel scope link src 10.11.151.101 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.42.1
There is no log output in /var/log/calico/kubernetes/calico.log.
时间： 2024-08-07 16:37:58