ext-iscsi is broken #490
Description
In versions 1.8.0 and 1.8.1 something broke with regards to ext-iscsi. All iSCSI PV's (that worked in 1.7.7) stopped working. The error I see (from the pod description):
Warning FailedMount 7s (x10 over 4m17s) kubelet MountVolume.WaitForAttach failed for volume "postgres-data-pv" : executable file not found in $PATH
I checked that the iscsiadm binary actually exists, but is not available for kubelet.
Start privileged container:
$ kubectl run -i --tty --rm --privileged -n kube-system --overrides='{"apiVersion": "v1", "spec": {"hostNetwork": true, "hostPID": true}}' --image ubuntu bash
In the container: run in ext-iscsi's namespace:
# nsenter -t $(pgrep iscsid) -a iscsiadm --help
iscsiadm -m discoverydb [-hV] [-d debug_level] [-P printlevel] [-t type -p ip:port -I ifaceN ... [-Dl]] | [[-p ip:port -t type] [-o operation] [-n name] [-v value] [-lD]]
iscsiadm -m discovery [-hV] [-d debug_level] [-P printlevel] [-t type -p ip:port -I ifaceN ... [-l]] | [[-p ip:port] [-l | -D]] [-W]
...
In the container: run in kubelet's namespace:
# nsenter -t 2272 -a iscsiadm --help
nsenter: failed to execute iscsiadm: No such file or directory