编辑 1
作为对评论的回应，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
更多 systemd 日志
...
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)
我已经成功地使用 CRI-0 1.18 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。然而，“coredns”节点被困在“ContainerCreating”。我按照官方的 Kubernetes 安装说明进行操作。
我试过的
我尝试安装 Calico 但这并没有解决它。我也尝试手动将 cni0 界面更改为 UP 但这也不起作用。问题显然出在桥接流量的某个地方，但我遵循了 Kubernetes 教程并启用了它。
在我对这个问题的研究中，我偶然发现了有希望的解决方案和教程，但没有一个解决了这个问题。 ( Rancher GitHub Issue , CRI-O GitHub Page , Projectcalico , Kubernetes tutorial )
防火墙-cmd
$ sudo firewall-cmd --state
running
$ sudo firewall-cmd --version
0.7.0
系统日志
Image of the log
因为粘贴整个日志会很难看。
用户名 -r
4.18.0-147.8.1.el8_1.x86_64 (Centos 8)
CRI-O
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
运行
$ runc --version
runc version spec: 1.0.1-dev
Kubernetes
1.18
Podman 版本
1.6.4
iptables/nft
我将 nft 与 iptables 兼容层一起使用。
$ iptables --version
iptables v1.8.2 (nf_tables)
主机供应商:
Contabo VPS
系统控制
$ 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
禁用 selinux
$ 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地址列表
$ 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
最佳答案
安条克圣手榴弹!我终于修好了!只花了我，什么，大约无数年和一个不安的夜晚。甜蜜的胜利!嗯……嗯。进入解决方案。
我终于明白了@Arghya Sadhu 和@Piotr Malec 的评论，他们是对的。我没有正确配置我的 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。在我在/etc/cni/net.d/中找到的 crio-bridge.conf 中，默认子网是不同的(10.85.0.0/16 或其他)。我认为在 kubeadm init 命令上指定 CIDR 就足够了，但我错了。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。我还认为那些用 CRI-O 安装的文件配置了合理的默认值，老实说，我并不完全理解它们的用途。
还发生了一些奇怪的事情:根据 Flannel，CRI-O 的子网应该是/16，但是当我使用 journalctl -u kubelet 检查日志时，它提到了一个/24 子网。
failed to set bridge addr: \"cni0\" already has an IP address different from 10.244.0.1/24"
所以我不得不将 crio.conf 中的子网更改为/24 并且它起作用了。我可能也必须更改 podman.conflist 中的子网，但我不确定。
无论如何，感谢 Arghya 和 Piotr 的帮助!
关于kubernetes - Kubelet - coredns 失败 "CreatePodSandbox"；无法设置网桥地址 : could not add ip addr to "cni0": permission denied，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/62408028/