针对这些评论，我提供了更多信息。
$ kubectl get pods --namespace kube-system
NAME READY STATUS RESTARTS AGE
coredns-66bff467f8-lkwfn 0/1 ContainerCreating 0 7m8s
coredns-66bff467f8-pcn6b 0/1 ContainerCreating 0 7m8s
etcd-masternode 1/1 Running 0 7m16s
kube-apiserver-masternode 1/1 Running 0 7m16s
kube-controller-manager-masternode 1/1 Running 0 7m16s
kube-proxy-7zrjn 1/1 Running 0 7m8s
kube-scheduler-masternode 1/1 Running 0 7m16s
...
Jun 16 16:18:59 masternode kubelet[6842]: E0616 16:18:59.313433 6842 remote_runtime.go:105] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-pcn6b_kube-system_d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08_0(cc72c59e22145274e47ca417c274af99591d0008baf2bf13364538b7debb57d3): failed to set bridge addr: could not add IP address to "cni0": permission denied
Jun 16 16:18:59 masternode kubelet[6842]: E0616 16:18:59.313512 6842 kuberuntime_sandbox.go:68] CreatePodSandbox for pod "coredns-66bff467f8-pcn6b_kube-system(d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08)" failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-pcn6b_kube-system_d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08_0(cc72c59e22145274e47ca417c274af99591d0008baf2bf13364538b7debb57d3): failed to set bridge addr: could not add IP address to "cni0": permission denied
Jun 16 16:18:59 masternode kubelet[6842]: E0616 16:18:59.313532 6842 kuberuntime_manager.go:727] createPodSandbox for pod "coredns-66bff467f8-pcn6b_kube-system(d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08)" failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-pcn6b_kube-system_d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08_0(cc72c59e22145274e47ca417c274af99591d0008baf2bf13364538b7debb57d3): failed to set bridge addr: could not add IP address to "cni0": permission denied
Jun 16 16:18:59 masternode kubelet[6842]: E0616 16:18:59.313603 6842 pod_workers.go:191] Error syncing pod d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08 ("coredns-66bff467f8-pcn6b_kube-system(d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08)"), skipping: failed to "CreatePodSandbox" for "coredns-66bff467f8-pcn6b_kube-system(d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08)" with CreatePodSandboxError: "CreatePodSandbox for pod \"coredns-66bff467f8-pcn6b_kube-system(d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08)\" failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-pcn6b_kube-system_d5fe7a46-c32d-4fa3-b1b3-fe5a28983e08_0(cc72c59e22145274e47ca417c274af99591d0008baf2bf13364538b7debb57d3): failed to set bridge addr: could not add IP address to \"cni0\": permission denied"
Jun 16 16:19:09 masternode kubelet[6842]: E0616 16:19:09.256408 6842 remote_runtime.go:105] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-lkwfn_kube-system_f0187bfd-89a2-474c-b843-b00875183c77_0(1aba005509e85f3ea7da3fc48ab789ae3a10ba0ffefc152d1c4edf65693befe2): failed to set bridge addr: could not add IP address to "cni0": permission denied
Jun 16 16:19:09 masternode kubelet[6842]: E0616 16:19:09.256498 6842 kuberuntime_sandbox.go:68] CreatePodSandbox for pod "coredns-66bff467f8-lkwfn_kube-system(f0187bfd-89a2-474c-b843-b00875183c77)" failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-lkwfn_kube-system_f0187bfd-89a2-474c-b843-b00875183c77_0(1aba005509e85f3ea7da3fc48ab789ae3a10ba0ffefc152d1c4edf65693befe2): failed to set bridge addr: could not add IP address to "cni0": permission denied
Jun 16 16:19:09 masternode kubelet[6842]: E0616 16:19:09.256525 6842 kuberuntime_manager.go:727] createPodSandbox for pod "coredns-66bff467f8-lkwfn_kube-system(f0187bfd-89a2-474c-b843-b00875183c77)" failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-lkwfn_kube-system_f0187bfd-89a2-474c-b843-b00875183c77_0(1aba005509e85f3ea7da3fc48ab789ae3a10ba0ffefc152d1c4edf65693befe2): failed to set bridge addr: could not add IP address to "cni0": permission denied
Jun 16 16:19:09 masternode kubelet[6842]: E0616 16:19:09.256634 6842 pod_workers.go:191] Error syncing pod f0187bfd-89a2-474c-b843-b00875183c77 ("coredns-66bff467f8-lkwfn_kube-system(f0187bfd-89a2-474c-b843-b00875183c77)"), skipping: failed to "CreatePodSandbox" for "coredns-66bff467f8-lkwfn_kube-system(f0187bfd-89a2-474c-b843-b00875183c77)" with CreatePodSandboxError: "CreatePodSandbox for pod \"coredns-66bff467f8-lkwfn_kube-system(f0187bfd-89a2-474c-b843-b00875183c77)\" failed: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_coredns-66bff467f8-lkwfn_kube-system_f0187bfd-89a2-474c-b843-b00875183c77_0(1aba005509e85f3ea7da3fc48ab789ae3a10ba0ffefc152d1c4edf65693befe2): failed to set bridge addr: could not add IP address to \"cni0\": permission denied"
... (repeats over and over again)
我已经用CRI-0 1.18成功安装了Kubernetes 1.18，并使用kubeadm init --pod-network-cidr = 192.168.0.0 / 16设置了一个集群。但是，“ coredns”节点被卡在“ ContainerCreating”上。我遵循了Kubernetes官方安装说明。
我尝试安装Calico，但没有解决问题。我也尝试过手动将cni0接口更改为UP，但这也没有用。问题显然出在流量桥接的地方，但是我遵循了Kubernetes教程并启用了它。
在研究问题时，我偶然找到了有前途的解决方案和教程，但没有一个解决问题。 （Rancher GitHub Issue，CRI-O GitHub Page，Projectcalico，Kubernetes tutorial）
$ sudo firewall-cmd --state
running
$ sudo firewall-cmd --version
0.7.0
Image of the log 因为粘贴整个日志会很丑陋。
4.18.0-147.8.1.el8_1.x86_64 (Centos 8)
crio --version
crio version
Version: 1.18.1
GitCommit: 5cbf694c34f8d1af19eb873e39057663a4830635
GitTreeState: clean
BuildDate: 2020-05-25T19:01:44Z
GoVersion: go1.13.4
Compiler: gc
Platform: linux/amd64
Linkmode: dynamic
$ runc --version
runc version spec: 1.0.1-dev
1.18
1.6.4
我在iptables兼容性层上使用了nft。
$ iptables --version
iptables v1.8.2 (nf_tables)
Contabo VPS
$ sysctl net.bridge
net.bridge.bridge-nf-call-arptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-filter-pppoe-tagged = 0
net.bridge.bridge-nf-filter-vlan-tagged = 0
net.bridge.bridge-nf-pass-vlan-input-dev = 0
$ sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1
$ cat /etc/sysconfig/selinux
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether REDACTED brd ff:ff:ff:ff:ff:ff
inet REDACTED scope global noprefixroute eth0
valid_lft forever preferred_lft forever
3: cni0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether c6:00:41:85:da:ad brd ff:ff:ff:ff:ff:ff
inet 10.85.0.1/16 brd 10.85.255.255 scope global noprefixroute cni0
valid_lft forever preferred_lft forever
7: tunl0@NONE: <NOARP,UP,LOWER_UP> mtu 1440 qdisc noqueue state UNKNOWN group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
inet 192.168.249.128/32 brd 192.168.249.128 scope global tunl0
valid_lft forever preferred_lft forever
答案 0 :(得分：1)
安提阿的圣手榴弹！我终于解决了！仅仅花了我大约一个十亿一千万年的时间和一个不安的夜晚。甜蜜的胜利！好吧...嗯进入解决方案。
我终于理解@Arghya Sadhu和@Piotr Malec的评论，他们是对的。我没有正确配置CNI插件。我使用Flannel作为网络提供商，他们需要10.244.0.0/16子网。在我的在/etc/cni/net.d/中找到的crio-bridge.conf中，默认子网不同（10.85.0.0/16之类）。我认为在kubeadm init命令上指定CIDR就足够了，但是我错了。您需要在crio-bridge.conf和podman.conflist（或目录中的类似文件）中设置正确的CIDR。我还认为用CRI-O安装的那些文件都配置有合理的默认值，老实说，我并不完全了解它们的用途。
还发生了一些奇怪的事情：根据Flannel的说法，CRI-O的子网应该是/ 16，但是当我使用journalctl -u kubelet检查日志时，它提到了/ 24子网。
failed to set bridge addr: \"cni0\" already has an IP address different from 10.244.0.1/24"
因此，我不得不将crio.conf中的子网更改为/ 24，并且它可以工作。我可能也必须在podman.conflist中更改子网，但是我不确定。
无论如何，感谢Arghya和Piotr的帮助！
答案 1 :(得分：0)
要使用 Calico 网络插件和 cri-o 容器运行时设置集群，我必须：
添加到/etc/crio/crio.conf
[crio.network]
network_dir = "/etc/cni/net.d/"
plugin_dirs = [
"/opt/cni/bin/",
"/usr/libexec/cni/",
]
在--cgroup-driver=systemd中添加/var/lib/kubelet/kubeadm-flags.env
KUBELET_KUBEADM_ARGS="--cgroup-driver=systemd --container-runtime=remote --container-runtime-endpoint=/var/run/crio/crio.sock --pod-infra-container-image=k8s.gcr.io/pause:3.5"
重启kubelet和crio
systemctl daemon-reload && systemctl restart kubelet crio
初始化集群
kubeadm init --pod-network-cidr='10.85.0.0/16'
安装 calico 网络插件
kubectl create -f https://docs.projectcalico.org/manifests/calico.yaml