注：以下情况参考http://www.jianshu.com/p/8ce11f947410 基础上进行测试
环境
centos7.2
kubeadm 1.6.1
问题现象
[root@cloud4ourself-kube1 manifests]# kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESSMODES STORAGECLASS AGE
datadir-zk-0 Pending slow 16h
gluster1 Bound pvc-45c39fbe-2a57-11e7-bdbe-fa163e72ab1f 5Gi RWO gluster-heketi 18h
[root@cloud4ourself-kube1 manifests]# kubectl describe pvc datadir-zk-0
Name: datadir-zk-0
Namespace: default
StorageClass: slow
Status: Pending
Volume:
Labels: app=zk
Annotations: volume.beta.kubernetes.io/storage-class=slow
volume.beta.kubernetes.io/storage-provisioner=kubernetes.io/rbd
Capacity:
Access Modes:
Events:
FirstSeen LastSeen Count From SubObjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
16h 36m 3850 persistentvolume-controller Warning ProvisioningFailed Failed to provision volume with StorageClass "slow": failed to create rbd image: executable file not found in $PATH, command output:
问题原因
由于kube-controller-manager使用容器方式运行，gcr.io/google_containers/kube-controller-manager-amd64:v1.6.0而该容器不包含rbd，
因此kube-controller-manager在创建pv时，无法调用rbd，解决办法就是将kube-controller-manager运行在有rbd的环境中，
本次临时将kube-controller-manager从容器提取出来，在master节点服务器上用命令方式运行
复制kube-controller-manager
[root@cloud4ourself-kube1 kubernetes]# kubectl exec -it kube-controller-manager-cloud4ourself-kube1.novalocal -n kube-system --
/ #
/ #
/ #
/ # cd /usr/local/bin/
/usr/local/bin # ls
kube-controller-manager
/usr/local/bin # df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/docker-253:1-201327648-973d5c7c4aa6e982d0b5eef5e301dd7261b7470d8de8a508f85942441c39237c
10474496 163204 10311292 2% /
tmpfs 1941100 0 1941100 0% /dev
tmpfs 1941100 0 1941100 0% /sys/fs/cgroup
/dev/vda1 41930056 4704356 37225700 11% /etc/pki
/dev/vda1 41930056 4704356 37225700 11% /dev/termination-log
/dev/vda1 41930056 4704356 37225700 11% /etc/kubernetes
/dev/vda1 41930056 4704356 37225700 11% /etc/resolv.conf
/dev/vda1 41930056 4704356 37225700 11% /etc/hostname
/dev/vda1 41930056 4704356 37225700 11% /etc/hosts
shm 65536 0 65536 0% /dev/shm
/dev/vda1 41930056 4704356 37225700 11% /etc/ssl/certs
tmpfs 1941100 0 1941100 0% /proc/kcore
tmpfs 1941100 0 1941100 0% /proc/timer_list
tmpfs 1941100 0 1941100 0% /proc/timer_stats
tmpfs 1941100 0 1941100 0% /proc/sched_debug
/usr/local/bin # cp kube-controller-manager /etc/kubernetes/
cp: can't create '/etc/kubernetes/kube-controller-manager': Read-only file system
/usr/local/bin # cp kube-controller-manager /etc/pki/
/usr/local/bin # cd /etc/pki/
/etc/pki # ls
CA java nssdb rsyslog
ca-trust kube-controller-manager rpm-gpg tls
/etc/pki # ps
PID USER TIME COMMAND
1 root 0:02 kube-controller-manager --controllers=*,bootstrapsigner,tokencleaner --kubeconfig=/etc/kubernetes/controller-manager.conf --service-account-private-key-file=/etc/kubernetes/pki/sa.key --a
13 root 0:00 sh
23 root 0:00 ps
/etc/pki # cat /proc/1/cmdline
kube-controller-manager--controllers=*,bootstrapsigner,tokencleaner--kubeconfig=/etc/kubernetes/controller-manager.conf--service-account-private-key-file=/etc/kubernetes/pki/sa.key--address=127.0.0.1--leader-elect=true--insecure-experimental-approve-all-kubelet-csrs-for-group=system:bootstrappers--cluster-signing-key-file=/etc/kubernetes/pki/ca.key--use-service-account-credentials=true--root-ca-file=/etc/kubernetes/pki/ca.crt--cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt/etc/pki #
移动kube-controller-manager.yaml
cd /etc/kubernetes
[root@cloud4ourself-kube1 kubernetes]# kubectl get pod -n kube-system
NAME READY STATUS RESTARTS AGE
calico-etcd-vbc6x 1/1 Running 1 1d
calico-node-0hbw2 2/2 Running 0 1d
calico-node-7x2jv 2/2 Running 4 1d
calico-node-cr8dc 2/2 Running 1 1d
calico-node-z928t 2/2 Running 2 1d
calico-policy-controller-2561685917-13j12 1/1 Running 1 1d
etcd-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
kube-apiserver-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
kube-controller-manager-cloud4ourself-kube1.novalocal 1/1 Running 0 51m
kube-dns-3913472980-zfpkg 3/3 Running 622 1d
kube-proxy-4h57v 1/1 Running 1 1d
kube-proxy-r5wqj 1/1 Running 0 1d
kube-proxy-r8b5p 1/1 Running 1 1d
kube-proxy-wfmrd 1/1 Running 0 1d
kube-scheduler-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
[root@cloud4ourself-kube1 kubernetes]# mv manifests/kube-controller-manager.yaml .
[root@cloud4ourself-kube1 kubernetes]# kubectl get pod -n kube-system
NAME READY STATUS RESTARTS AGE
calico-etcd-vbc6x 1/1 Running 1 1d
calico-node-0hbw2 2/2 Running 0 1d
calico-node-7x2jv 2/2 Running 4 1d
calico-node-cr8dc 2/2 Running 1 1d
calico-node-z928t 2/2 Running 2 1d
calico-policy-controller-2561685917-13j12 1/1 Running 1 1d
etcd-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
kube-apiserver-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
kube-dns-3913472980-zfpkg 3/3 Running 622 1d
kube-proxy-4h57v 1/1 Running 1 1d
kube-proxy-r5wqj 1/1 Running 0 1d
kube-proxy-r8b5p 1/1 Running 1 1d
kube-proxy-wfmrd 1/1 Running 0 1d
kube-scheduler-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
在服务器里启动（非容器方式）
/etc/pki/kube-controller-manager --controllers=*,bootstrapsigner,tokencleaner --kubeconfig=/etc/kubernetes/controller-manager.conf --service-account-private-key-file=/etc/kubernetes/pki/sa.key --address=127.0.0.1 --leader-elect=true --insecure-experimental-approve-all-kubelet-csrs-for-group=system:bootstrappers --cluster-signing-key-file=/etc/kubernetes/pki/ca.key --use-service-account-credentials=true --root-ca-file=/etc/kubernetes/pki/ca.crt --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt/etc/pki/ca.crt
在此确认pvc
[root@cloud4ourself-kube1 manifests]# kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESSMODES STORAGECLASS AGE
datadir-zk-0 Bound pvc-7f1a0c7e-2a67-11e7-bdbe-fa163e72ab1f 1Gi RWO slow 17h
gluster1 Bound pvc-45c39fbe-2a57-11e7-bdbe-fa163e72ab1f 5Gi RWO gluster-heketi 19h
[root@cloud4ourself-kube1 manifests]# kubectl get pv
NAME CAPACITY ACCESSMODES RECLAIMPOLICY STATUS CLAIM STORAGECLASS REASON AGE
pvc-45c39fbe-2a57-11e7-bdbe-fa163e72ab1f 5Gi RWO Delete Bound default/gluster1 gluster-heketi 19h
pvc-7f1a0c7e-2a67-11e7-bdbe-fa163e72ab1f 1Gi RWO Delete Bound default/datadir-zk-0 slow 16s
待pv全部创建完毕
[root@cloud4ourself-kube1 pki]# kubectl get pod
NAME READY STATUS RESTARTS AGE
glusterfs-66gn0 1/1 Running 1 20h
glusterfs-srhh8 1/1 Running 0 20h
glusterfs-z55q5 1/1 Running 0 20h
heketi-1125625054-pl9qc 1/1 Running 0 20h
zk-0 1/1 Running 0 17h
zk-1 1/1 Running 0 9m
zk-2 1/1 Running 0 7m
[root@cloud4ourself-kube1 pki]# kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESSMODES STORAGECLASS AGE
datadir-zk-0 Bound pvc-7f1a0c7e-2a67-11e7-bdbe-fa163e72ab1f 1Gi RWO slow 17h
datadir-zk-1 Bound pvc-c58c0a6e-2afc-11e7-bdbe-fa163e72ab1f 1Gi RWO slow 9m
datadir-zk-2 Bound pvc-19b76842-2afd-11e7-bdbe-fa163e72ab1f 1Gi RWO slow 7m
gluster1 Bound pvc-45c39fbe-2a57-11e7-bdbe-fa163e72ab1f 5Gi RWO gluster-heketi 19h
[root@cloud4ourself-kube1 pki]# kubectl get pv
NAME CAPACITY ACCESSMODES RECLAIMPOLICY STATUS CLAIM STORAGECLASS REASON AGE
pvc-19b76842-2afd-11e7-bdbe-fa163e72ab1f 1Gi RWO Delete Bound default/datadir-zk-2 slow 7m
pvc-45c39fbe-2a57-11e7-bdbe-fa163e72ab1f 5Gi RWO Delete Bound default/gluster1 gluster-heketi 19h
pvc-7f1a0c7e-2a67-11e7-bdbe-fa163e72ab1f 1Gi RWO Delete Bound default/datadir-zk-0 slow 12m
pvc-c58c0a6e-2afc-11e7-bdbe-fa163e72ab1f 1Gi RWO Delete Bound default/datadir-zk-1 slow 9m
重新恢复容器方式
# 停止kube-controller-manager
# 移动配置文件
[root@cloud4ourself-kube1 kubernetes]# mv kube-controller-manager.yaml manifests/
[root@cloud4ourself-kube1 kubernetes]# kubectl get pod -n kube-system
NAME READY STATUS RESTARTS AGE
calico-etcd-vbc6x 1/1 Running 1 1d
calico-node-0hbw2 2/2 Running 0 1d
calico-node-7x2jv 2/2 Running 4 1d
calico-node-cr8dc 2/2 Running 1 1d
calico-node-z928t 2/2 Running 2 1d
calico-policy-controller-2561685917-13j12 1/1 Running 1 1d
etcd-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
kube-apiserver-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
kube-controller-manager-cloud4ourself-kube1.novalocal 1/1 Running 0 7s
kube-dns-3913472980-zfpkg 3/3 Running 622 1d
kube-proxy-4h57v 1/1 Running 1 1d
kube-proxy-r5wqj 1/1 Running 0 1d
kube-proxy-r8b5p 1/1 Running 1 1d
kube-proxy-wfmrd 1/1 Running 0 1d
kube-scheduler-cloud4ourself-kube1.novalocal 1/1 Running 1 1d
