objętość Kubernetes configMap nie tworzy plik w zbiorniku

Question

K8S 1,2 rozmieszczone locally, single-node docker

robię coś źle? Czy to działa dla wszystkich innych osób, czy też jest czymś zepsutym w moim wdrożeniu k8s?

Wzorem w przewodniku ConfigMaps należy /etc/config/special.how zostać utworzony poniżej, ale nie jest:

[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: very 
    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 

Podsumowanie błędów testów zgodności następuje (poproszony o uruchomienie przez jayunit100). Pełny przebieg w tym gist.

Summarizing 7 Failures: 

[Fail] ConfigMap [It] updates should be 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 only [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 be consumable from pods in volume with mappings [Conformance] 
/home/schou/dev/kubernetes/_output/local/go/src/k8s.io/kubernetes/test/e2e/util.go:1637 

[Fail] Networking [It] should function for 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 be consumable from 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 

Wyjście 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]$ 

Answer 1

Dzięki @Paul Morie dla pomagając mi zdiagnozować i naprawić (od github issue):

bingo, tryb propagacji Góra/var/lib/kubelet jest prywatny. spróbuj zmienić flagę montowania dla kubelet reż do -v /var/lib/kubelet:/var/lib/kubelet:rw,shared

miałem też zmienić MountFlags=slave do MountFlags=shared w moim Döcker Systemd pliku.