kubernetes1.24+containerd搭建

1. 安装containerd

　　k8s1.24不支持docker作为运行时容器，需要采用containerd

　　k8s1.24可以支持docker的远程镜像

1.1. 安装

　　apt-get install containerd.io=1.6.6-1

1.2. 生成containerd默认配置文件(所有节点)

　　mv /etc/containerd/config.toml /etc/containerd/config.toml.orig

　　containerd config default > /etc/containerd/config.toml

1.3. 修改config.toml文件

endpoint加速器

　　　　[plugins."io.containerd.tracing.processor.v1.otlp"]

　　　　　endpoint = "https://docker.mirrors.ustc.edu.cn/"

　　　　insecure = false

　　　　 protocol = “"

修改sandbox_image

　　　　#sandbox_image = "k8s.gcr.io/pause:3.6"

　　 sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.7"

修改Systemdcgroup

　　　　[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]

　　IoUid = 0

　　NOnewKeyring= false

　　NoPivotRoot = false

　　Root = ""

　　ShimCgroup = ""

　　SystemdCgroup = true

修改root和state的路径(看硬盘情况)

　　　　required_plugins = []

　　　　root = "/home/containerd/root"

　　　　state = "/home/containerd/state"

　　　　temp = ""

　　　　version = 2

1.4. 重启containerd

　　systemctl restart containerd

1.5. 查看镜像

　　sudo crictl image ls

1 node(s) had untolerated taint {node-role.kubernetes.io/control-plane: }. preemption: 0/1 nodes are available：

　　　　kubectl taint nodes --all node-role.kubernetes.io/control-plane-

4.8. 日志查看

　　systemctl status kubelet

　　journalctl -xefu kubelet

　　vim /var/log/pods/kube-system_kube-apiserver

4.9. POD网络差距flannel安装

　　用来部署pod的地址

　下载配置：

　　　　wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

　修改配置文件：

　　　　确保kube-flannel.yml的这个字段“Network”: “10.244.0.0/16" 与kubeadm.conf的podSubnet地址一致

　部署：

　　　　kubectl apply -f kube-flannel.yml

　检测flannel进程是否启动：

　　　　qiteck@logic:~/program/k8s_1.24.2$ ps -ef|grep flannel

　　　　root 4673 4326 0 09:16 ? 00:00:00 /opt/bin/flanneld --ip-masq --kube-subnet-mgr

检测flannel进程是否启动：

iteck@server:~$ sudo kubectl get pods -n kube-system
NAME                                         READY   STATUS    RESTARTS        AGE
coredns-74586cf9b6-8mbqz                     1/1     Running   3 (6d23h ago)   6d23h
coredns-74586cf9b6-hz48p                     1/1     Running   3 (6d23h ago)   6d23h
etcd-master.cluster.k8s                      1/1     Running   5 (6d23h ago)   6d23h
kube-apiserver-master.cluster.k8s            1/1     Running   0               3d1h
kube-controller-manager-master.cluster.k8s   1/1     Running   7 (2d23h ago)   6d23h
kube-flannel-ds-rt8z5                        1/1     Running   5 (46h ago)     3d
kube-flannel-ds-t6nrc                        1/1     Running   1 (6d23h ago)   6d23h
kube-proxy-ngnrv                             1/1     Running   5 (46h ago)     3d
kube-proxy-tjh8h                             1/1     Running   4 (6d23h ago)   6d23h
kube-scheduler-master.cluster.k8s            1/1     Running   7 (2d23h ago)   6d23h

看下cni0网卡是否有了：

qiteck@server:~$ ifconfig
br-0480d1b7cefb: flags=4163  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255
        inet6 fe80::42:e1ff:fe6e:8e3c  prefixlen 64  scopeid 0x20
        ether 02:42:e1:6e:8e:3c  txqueuelen 0  (Ethernet)
        RX packets 84662  bytes 119261797 (119.2 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 83663  bytes 121420317 (121.4 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

cni0: flags=4163  mtu 1450
        inet 10.244.1.1  netmask 255.255.255.0  broadcast 10.244.1.255
        inet6 fe80::b821:f2ff:fe1d:809a  prefixlen 64  scopeid 0x20
        ether ba:21:f2:1d:80:9a  txqueuelen 1000  (Ethernet)
        RX packets 9016802  bytes 993361285 (993.3 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6600536  bytes 1003467886 (1.0 GB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0