Bug 1231134
| Summary: | Docker contaier can't access gluster (fuse) volumes | |||
|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jan Safranek <jsafrane> | |
| Component: | docker | Assignee: | Lokesh Mandvekar <lsm5> | |
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 21 | CC: | admiller, dwalsh, ichavero, jcajka, jchaloup, jvance, lsm5, lsu, miminar, vbatts | |
| Target Milestone: | --- | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | Bug Fix | ||
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1231936 (view as bug list) | Environment: | ||
| Last Closed: | 2015-12-02 13:43:40 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1231936 | |||
I've observed that, although you cannot ls the mounted dir (as if r access to the dir is denied), you can pass through it (x access) and cat files in the gluster volume. I just added a virt_sandbox_use_fusefs boolean to docker-selinux. If we got proper labeling on gluster files via XAttrs we would not have this problem. This boolean will allow docker containers to attack any fusefs files on the system, including all gluster mounted drives, if it can get access to them. Fixed in docker-io-1.7.0-1.git21cb6eb.fc21 Fixed in docker-io-1.7.0-1.git21cb6eb.fc21 This message is a reminder that Fedora 21 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 21. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '21'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 21 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 21 changed to end-of-life (EOL) status on 2015-12-01. Fedora 21 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |
SELinux denies any access from inside a Docker container to a mounted GlusterFS volume, even though virt_use_fusefs boolean is set to 'on'. AVC gathered with disabled dontaudit rules (why dontaudit this ????): type=SYSCALL msg=audit(1434098028.965:515): arch=c000003e syscall=257 success=no exit=-13 a0=ffffffffffffff9c a1=194bc60 a2=90800 a3=0 items=0 ppid=4012 pid=4054 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts3 ses=4294967295 comm="ls" exe="/usr/bin/ls" subj=system_u:system_r:svirt_lxc_net_t:s0:c131,c679 key=(null) type=AVC msg=audit(1434098028.965:515): avc: denied { read } for pid=4054 comm="ls" name="/" dev="fuse" ino=1 scontext=system_u:system_r:svirt_lxc_net_t:s0:c131,c679 tcontext=system_u:object_r:fusefs_t:s0 tclass=dir permissive=0 Version-Release number of selected component (if applicable): selinux-policy-targeted-3.13.1-105.13.fc21.noarch How reproducible: always Steps to Reproduce: 1. mount a GlusterFS volume to /mnt/test (or use any other fuse filesystem) mount -t glusterfs my-gluster-server:test_vol /mnt/test 2. use it as a container volume docker run -ti -v /mnt/test:/mnt/test fedora:21 bash 3. (inside the container) look at /mnt/test ls /mnt/test Actual results: ls: cannot open directory /mnt/test: Permission denied Expected results: see content of the directory Additional info: As stated above, 'setsebool -P virt_use_fusefs on' does not help. On the other way, 'setsebool -P virt_use_nfs on' helps to get the same working for NFS. Also, these dontaudit rules only complicate things, it's hard to guess who rejects access in a complex environment where Docker, Kubernetes, SElinux, kernel namespaces and Gluster are involved.