我正在尝试在Centos 7服务器中创建Kubernetes V1.11.0 HA集群。我在主机上禁用了IPV6。
https://kubernetes.io/docs/setup/independent/high-availability/
根据这些步骤，添加了所有三个主服务器，coreDNS POD不会出现，它会将日志记录在/ var / log / messages文件中的错误以下。
kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-78fcdf6894-8t7bt 0/1 ContainerCreating 0 53m
coredns-78fcdf6894-plmll 0/1 ContainerCreating 0 53m
错误信息:
Jul 17 10:09:28 master03 kubelet: E0717 10:09:28.531244 10041 remote_runtime.go:92] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = [failed to set up sandbox container "8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c" network for pod "coredns-78fcdf6894-8t7bt": NetworkPlugin cni failed to set up pod "coredns-78fcdf6894-8t7bt_kube-system" network: open /proc/sys/net/ipv6/conf/eth0/accept_dad: no such file or directory, failed to clean up sandbox container "8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c" network for pod "coredns-78fcdf6894-8t7bt": NetworkPlugin cni failed to teardown pod "coredns-78fcdf6894-8t7bt_kube-system" network: failed to get IP addresses for "eth0": <nil>]
Jul 17 10:09:28 master03 kubelet: E0717 10:09:28.531286 10041 kuberuntime_sandbox.go:56] CreatePodSandbox for pod "coredns-78fcdf6894-8t7bt_kube-system(7caa3f29-89c3-11e8-aa0f-00505693ca30)" failed: rpc error: code = Unknown desc = [failed to set up sandbox container "8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c" network for pod "coredns-78fcdf6894-8t7bt": NetworkPlugin cni failed to set up pod "coredns-78fcdf6894-8t7bt_kube-system" network: open /proc/sys/net/ipv6/conf/eth0/accept_dad: no such file or directory, failed to clean up sandbox container "8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c" network for pod "coredns-78fcdf6894-8t7bt": NetworkPlugin cni failed to teardown pod "coredns-78fcdf6894-8t7bt_kube-system" network: failed to get IP addresses for "eth0": <nil>]
Jul 17 10:09:28 master03 kubelet: E0717 10:09:28.531298 10041 kuberuntime_manager.go:646] createPodSandbox for pod "coredns-78fcdf6894-8t7bt_kube-system(7caa3f29-89c3-11e8-aa0f-00505693ca30)" failed: rpc error: code = Unknown desc = [failed to set up sandbox container "8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c" network for pod "coredns-78fcdf6894-8t7bt": NetworkPlugin cni failed to set up pod "coredns-78fcdf6894-8t7bt_kube-system" network: open /proc/sys/net/ipv6/conf/eth0/accept_dad: no such file or directory, failed to clean up sandbox container "8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c" network for pod "coredns-78fcdf6894-8t7bt": NetworkPlugin cni failed to teardown pod "coredns-78fcdf6894-8t7bt_kube-system" network: failed to get IP addresses for "eth0": <nil>]
Jul 17 10:09:28 master03 kubelet: E0717 10:09:28.531358 10041 pod_workers.go:186] Error syncing pod 7caa3f29-89c3-11e8-aa0f-00505693ca30 ("coredns-78fcdf6894-8t7bt_kube-system(7caa3f29-89c3-11e8-aa0f-00505693ca30)"), skipping: failed to "CreatePodSandbox" for "coredns-78fcdf6894-8t7bt_kube-system(7caa3f29-89c3-11e8-aa0f-00505693ca30)" with CreatePodSandboxError: "CreatePodSandbox for pod \"coredns-78fcdf6894-8t7bt_kube-system(7caa3f29-89c3-11e8-aa0f-00505693ca30)\" failed: rpc error: code = Unknown desc = [failed to set up sandbox container \"8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c\" network for pod \"coredns-78fcdf6894-8t7bt\": NetworkPlugin cni failed to set up pod \"coredns-78fcdf6894-8t7bt_kube-system\" network: open /proc/sys/net/ipv6/conf/eth0/accept_dad: no such file or directory, failed to clean up sandbox container \"8cf72126bd4ea7e33806512997d02b51c3f95331701928c52c19d1ddea9d6f9c\" network for pod \"coredns-78fcdf6894-8t7bt\": NetworkPlugin cni failed to teardown pod \"coredns-78fcdf6894-8t7bt_kube-system\" network: failed to get IP addresses for \"eth0\": <nil>]"
Jul 17 10:09:28 master03 kubelet: W0717 10:09:28.636173 10041 cni.go:243] CNI failed to retrieve network namespace path: cannot find network namespace for the terminated container "88183d8a24dcafca5b04e3a6454e83aca1417a6934f50cd52b3e6fffbae4f272"
Jul 17 10:09:28 master03 kernel: XFS (dm-18): Mounting V4 Filesystem
如何解决此错误消息并带来coreDNS POD？
谢谢
最佳答案
Coreos Github上有一个问题可以准确描述您的情况。解决该问题的建议是:
关于CNI Github的相关问题，他还提到:
jellonek评论:
但是，如果出于某些原因需要关闭ipv6，则可以使用addon使用CoreDNS KubeDNS而不是kubeadm安装集群:
kubeadm初始化--pod-network-cidr = 192.168.0.0 / 16 --feature-gates = CoreDNS = false
或者，您可以删除CoreDNS部署和服务，然后应用KubeDNS yaml，应将其设置为generated或根据您的实际群集配置进行调整。
这是deployAddons.sh文件中的函数，负责部署kube-dns插件:
function deploy_dns {
echo "Deploying DNS on Kubernetes"
cp "${KUBE_ROOT}/cluster/addons/dns/kube-dns/kube-dns.yaml.sed" kube-dns.yaml
sed -i -e "s/\\\$DNS_DOMAIN/${DNS_DOMAIN}/g" kube-dns.yaml
sed -i -e "s/\\\$DNS_SERVER_IP/${DNS_SERVER_IP}/g" kube-dns.yaml
KUBEDNS=`eval "${KUBECTL} get services --namespace=kube-system | grep kube-dns | cat"`
if [ ! "$KUBEDNS" ]; then
# use kubectl to create kube-dns addon
${KUBECTL} --namespace=kube-system create -f kube-dns.yaml
echo "Kube-dns addon is successfully deployed."
else
echo "Kube-dns addon is already deployed. Skipping."
fi
echo
}
关于docker - Kubernetes V1.11.0 HA群集CoreDNS PODS未出现，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51383684/