Kubernetes ConfigMap volume doesn't create file in container -


k8s 1.2 deployed locally, single-node docker

am doing wrong? working else or broken in k8s deployment?

following example in configmaps guide, /etc/config/special.how should created below not:

[root@totoro brs-kubernetes]# kubectl create -f example.yaml  configmap "special-config" created pod "dapi-test-pod" created [root@totoro brs-kubernetes]# kubectl exec -it dapi-test-pod -- sh / # cd /etc/config/ /etc/config # ls /etc/config # ls -alh total 4 drwxrwxrwt    2 root     root          40 mar 23 18:47 . drwxr-xr-x    7 root     root        4.0k mar 23 18:47 .. /etc/config #

example.yaml

apiversion: v1 kind: configmap metadata:   name: special-config   namespace: default data:   special.how:   special.type: charm --- apiversion: v1 kind: pod metadata:   name: dapi-test-pod spec:   containers:     - name: test-container       image: gcr.io/google_containers/busybox       command: ["sleep", "100"]       volumemounts:       - name: config-volume         mountpath: /etc/config   volumes:     - name: config-volume       configmap:         name: special-config         items:         - key: special.how           path: how.file   restartpolicy: never

summary of conformance test failures follows (asked run jayunit100). full run in gist.

summarizing 7 failures:  [fail] configmap [it] updates should reflected in volume [conformance]  /home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/configmap.go:262  [fail] downward api volume [it] should provide podname [conformance]  /home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/util.go:1637  [fail] downward api volume [it] should update labels on modification [conformance]  /home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/downwardapi_volume.go:82  [fail] configmap [it] should consumable pods in volume mappings [conformance]  /home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/util.go:1637  [fail] networking [it] should function intra-pod communication [conformance]  /home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/networking.go:121  [fail] downward api volume [it] should update annotations on modification [conformance]  /home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/downwardapi_volume.go:119  [fail] configmap [it] should consumable pods in volume [conformance]  /home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/util.go:1637  ran 93 of 265 specs in 2875.468 seconds fail! -- 86 passed | 7 failed | 0 pending | 172 skipped --- fail: teste2e (2875.48s) fail

output of findmnt:

[schou@totoro single-node]$ findmnt target                                source     fstype  options /                                     /dev/mapper/fedora-root │                                                ext4    rw,relatime,data=ordere ├─/sys                                sysfs      sysfs   rw,nosuid,nodev,noexec, │ ├─/sys/kernel/security              securityfs securit rw,nosuid,nodev,noexec, │ ├─/sys/fs/cgroup                    tmpfs      tmpfs   ro,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/systemd          cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/cpuset           cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/net_cls,net_prio cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/memory           cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/hugetlb          cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/cpu,cpuacct      cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/perf_event       cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/pids             cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/blkio            cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ ├─/sys/fs/cgroup/freezer          cgroup     cgroup  rw,nosuid,nodev,noexec, │ │ └─/sys/fs/cgroup/devices          cgroup     cgroup  rw,nosuid,nodev,noexec, │ ├─/sys/fs/pstore                    pstore     pstore  rw,nosuid,nodev,noexec, │ ├─/sys/firmware/efi/efivars         efivarfs   efivarf rw,nosuid,nodev,noexec, │ ├─/sys/kernel/debug                 debugfs    debugfs rw,relatime │ ├─/sys/kernel/config                configfs   configf rw,relatime │ └─/sys/fs/fuse/connections          fusectl    fusectl rw,relatime ├─/proc                               proc       proc    rw,nosuid,nodev,noexec, │ ├─/proc/sys/fs/binfmt_misc          systemd-1  autofs  rw,relatime,fd=32,pgrp= │ └─/proc/fs/nfsd                     nfsd       nfsd    rw,relatime ├─/dev                                devtmpfs   devtmpf rw,nosuid,size=8175208k │ ├─/dev/shm                          tmpfs      tmpfs   rw,nosuid,nodev │ ├─/dev/pts                          devpts     devpts  rw,nosuid,noexec,relati │ ├─/dev/mqueue                       mqueue     mqueue  rw,relatime │ └─/dev/hugepages                    hugetlbfs  hugetlb rw,relatime ├─/run                                tmpfs      tmpfs   rw,nosuid,nodev,mode=75 │ ├─/run/user/42                      tmpfs      tmpfs   rw,nosuid,nodev,relatim │ │ └─/run/user/42/gvfs               gvfsd-fuse fuse.gv rw,nosuid,nodev,relatim │ └─/run/user/1000                    tmpfs      tmpfs   rw,nosuid,nodev,relatim │   └─/run/user/1000/gvfs             gvfsd-fuse fuse.gv rw,nosuid,nodev,relatim ├─/tmp                                tmpfs      tmpfs   rw ├─/boot                               /dev/sda2  ext4    rw,relatime,data=ordere │ └─/boot/efi                         /dev/sda1  vfat    rw,relatime,fmask=0077, ├─/var/lib/nfs/rpc_pipefs             sunrpc     rpc_pip rw,relatime ├─/var/lib/kubelet/pods/fd20f710-fb82-11e5-ab9f-0862662cf845/volumes/kubernetes.io~secret/default-token-qggyv │                                     tmpfs      tmpfs   rw,relatime ├─/var/lib/kubelet/pods/2f652e15-fb83-11e5-ab9f-0862662cf845/volumes/kubernetes.io~configmap/config-volume │                                     tmpfs      tmpfs   rw,relatime └─/var/lib/kubelet/pods/2f652e15-fb83-11e5-ab9f-0862662cf845/volumes/kubernetes.io~secret/default-token-6bzfe                                       tmpfs      tmpfs   rw,relatime [schou@totoro single-node]$

thanks @paul morie helping me diagnose , fix (from github issue):

bingo, mount propagation mode of /var/lib/kubelet private. try changing mount flag kubelet dir -v /var/lib/kubelet:/var/lib/kubelet:rw,shared

i had change mountflags=slave mountflags=shared in docker systemd file.


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