Commit Graph

80 Commits

Author SHA1 Message Date
Niels de Vos
31648c8feb provisioners: add reconfiguring of PID limit
The container runtime CRI-O limits the number of PIDs to 1024 by
default. When many PVCs are requested at the same time, it is possible
for the provisioner to start too many threads (or go routines) and
executing 'rbd' commands can start to fail. In case a go routine can not
get started, the process panics.

The PID limit can be changed by passing an argument to kubelet, but this
will affect all pids running on a host. Changing the parameters to
kubelet is also not a very elegant solution.

Instead, the provisioner pod can change the configuration itself. The
pod is running in privileged mode and can write to /sys/fs/cgroup where
the limit is configured.

With this change, the limit is configured to 'max', just as if there is
no limit at all. The logs of the csi-rbdplugin in the provisioner pod
will reflect the change it makes when starting the service:

    $ oc -n rook-ceph logs -c csi-rbdplugin csi-rbdplugin-provisioner-0
    ..
    I0726 13:59:19.737678       1 cephcsi.go:127] Initial PID limit is set to 1024
    I0726 13:59:19.737746       1 cephcsi.go:136] Reconfigured PID limit to -1 (max)
    ..

It is possible to pass a different limit on the commandline of the
cephcsi executable. The following flag has been added:

    --pidlimit=<int>       the PID limit to configure through cgroups

This accepts special values -1 (max) and 0 (default, do not
reconfigure). Other integers will be the limit that gets configured in
cgroups.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2019-08-13 14:43:29 +00:00
Humble Chirammal
0786225937 Implement metrics for RBD plugin
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
2019-08-01 11:58:54 +00:00
Madhu Rajanna
778cfb3090 provide option to set pluginpath for cephfs
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2019-07-25 14:47:42 +05:30
Madhu Rajanna
3f8bd3b2a6 Update driver version during build time
update driver version and add git commit
to the image. This will help us to identify
what latest git commit image contains.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2019-07-12 15:54:52 +05:30
ShyamsundarR
fa68c35f3b Support mounting and deleting version 1.0.0 RBD volumes
This commit adds support to mount and delete volumes provisioned by older
plugin versions (1.0.0) in order to support backward compatibility to 1.0.0
created volumes.

It adds back the ability to specify where older meta data was specified, using
the metadatastorage option to the plugin. Further, using the provided meta data
to mount and delete the older volumes.

It also supports a variety of ways in which monitor information may have been
specified (in the storage class, or in the secret), to keep the monitor
information current.

Testing done:
- Mount/Delete 1.0.0 plugin created volume with monitors in the StorageClass
- Mount/Delete 1.0.0 plugin created volume with monitors in the secret with
  a key "monitors"
- Mount/Delete 1.0.0 plugin created volume with monitors in the secret with
  a user specified key
- PVC creation and deletion with the current version (to ensure at the minimum
  no broken functionality)
- Tested some negative cases, where monitor information is missing in secrets
  or present with a different key name, to understand if failure scenarios work
  as expected

Updates #378

Follow-up work:
- Documentation on how to upgrade to 1.1 plugin and retain above functionality
  for older volumes

Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-07-08 15:40:17 +00:00
Madhu Rajanna
a38986fce0 Enable all static-checks in golangci-lint
* Enable all static-checks in golangci-lint
* Update golangci-lint version
* Fix issue found in golangci-lint

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2019-06-10 15:56:17 +05:30
ShyamsundarR
b9cd0e18ad Make CephFS plugin stateless reusing RADOS based journal scheme
This is a part of the stateless set of commits for CephCSI.

This commit removes the dependency on config maps to store cephFS provisioned
volumes, and instead relies on RADOS based objects and keys, and required
CSI VolumeID encoding to detect the provisioned volumes.

Changes:
- Provide backward compatibility to provisioned volumes by older plugin versions (1.0.0 or older)
- Remove Create/Delete support for statically provisioned volumes (fixes #382)
- Added namespace support to RADOS OMaps and used the same to store RADOS CSI objects and keys in the CephFS metadata pool
- Added support to mention fsname for CephFS provisioning (fixes #359)
- Changed field name in CSI Identifier to 'location', to denote a pool or fscid
- Updated mounter cache to use new scheme
- Required Helm manifests are updated
- Required documentation and other manifests are updated
- Made driver option 'metadatastorage' as optional, as fresh installs do not need to specify the same

Testing done:
- Create/Mount/Delete PVC
- Create/Delete 5 PVCs
- Mount version 1.0.0 PVC
- Delete version 1.0.0 PV
- Mount Statically defined PV/PVC/Pod
- Mount Statically defined version 1.0.0 PV/PVC/Pod
- Delete Statically defined version 1.0.0 PV/PVC/Pod
- Node restart when mounted to test mountcache
- Use InstanceID other than 'default'
- RBD basic round of tests, as namespace is added to OMaps
- csitest against ceph-fs plugin
  - NOTE: CephFS plugin still does not detect and address already created
  volumes but of a different size
- Test not providing any value to the metadata storage parameter

Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-05-30 06:20:35 -04:00
Madhu Rajanna
2d560ba087 update ceph-csi to build and use a single docker image
currently, we have 3 docker files(cephcsi,rbd,cephfs) in the ceph-csi repo.
[commit ](85e121ebfe)
added by John to build a single image which can act as rbd or
cephfs based on the input configuration.

This PR updates the makefile and kubernetes templates to use
the unified image and also its deletes the other two dockerfiles.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2019-05-28 18:10:22 +00:00
ShyamsundarR
d02e50aa9b Removed config maps and replaced with rados omaps
Existing config maps are now replaced with rados omaps that help
store information regarding the requested volume names and the rbd
image names backing the same.

Further to detect cluster, pool and which image a volume ID refers
to, changes to volume ID encoding has been done as per provided
design specification in the stateless ceph-csi proposal.

Additional changes and updates,
- Updated documentation
- Updated manifests
- Updated Helm chart
- Addressed a few csi-test failures

Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-05-19 12:29:33 +00:00
John Mulligan
ab47d83595 cmd: remove old command main files
Now that the unified binary has its own main file under "cmd/"
we no longer need the split main.go files.

Signed-off-by: John Mulligan <jmulligan@redhat.com>
2019-04-15 14:11:53 -04:00
John Mulligan
85e121ebfe cmd: create a unified cephcsi binary
Create a single binary that can start ceph-csi in either rbd
or cephfs mode.

Signed-off-by: John Mulligan <jmulligan@redhat.com>
2019-04-10 20:36:51 +00:00
wilmardo
891daa9375 Replaces the references to the Kubernete Authors with the Ceph-CSI authors 2019-04-03 11:14:08 +02:00
Róbert Vašek
d0d5da83c9
Merge pull request #282 from huaizong/improve-remount-pv-path-when-exit-v2
remount old mount point when csi plugin unexpect exit
2019-04-02 08:36:07 +02:00
王怀宗
5b53e90ee4 fix code style 2019-03-29 10:18:59 +08:00
王怀宗
af330fe68e 1. fix mountcache race conflict
2. support user-defined cache dir
    3. if not define mountcachedir disable mountcache
2019-03-27 16:04:58 +08:00
ShyamsundarR
ba2e5cff51 Address remenant subject reference and code style reviews
Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-03-26 16:19:24 +00:00
ShyamsundarR
bd03d05776 Address linter error
Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-03-26 16:19:24 +00:00
ShyamsundarR
2064e674a4 Addressed using k8s client APIs to fetch secrets
Based on the review comments addressed the following,
- Moved away from having to update the pod with volumes
when a new Ceph cluster is added for provisioning via the
CSI driver

- The above now used k8s APIs to fetch secrets
  - TBD: Need to add a watch mechanisim such that these
secrets can be cached and updated when changed

- Folded the Cephc configuration and ID/key config map
and secrets into a single secret

- Provided the ability to read the same config via mapped
or created files within the pod

Tests:
- Ran PV creation/deletion/attach/use using new scheme
StorageClass
- Ran PV creation/deletion/attach/use using older scheme
to ensure nothing is broken
- Did not execute snapshot related tests

Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-03-26 16:19:24 +00:00
ShyamsundarR
97f8c4b677 Provide options to pass in Ceph cluster-id
This commit provides the option to pass in Ceph cluster-id instead
of a MON list from the storage class.

This helps in moving towards a stateless CSI implementation.

Tested the following,
- PV provisioning and staging using cluster-id in storage class
- PV provisioning and staging using MON list in storage class

Did not test,
- snapshot operations in either forms of the storage class

Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-03-26 16:19:24 +00:00
Madhu Rajanna
d61a87b42e Fix driver name as per CSI spec
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2019-03-13 12:04:30 +05:30
Madhu Rajanna
6f4f148d3b remove glog
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
2019-02-27 14:17:19 +05:30
Madhu Rajanna
fd4c019aba cleanup: remove duplicate code
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
2019-02-19 13:44:10 +05:30
gman
6099f142f0 moved klog initialization into pkg/util package 2019-02-12 16:31:55 +01:00
gman
1748629de2 fixes broken migration to klog 2019-02-10 10:38:57 +01:00
Huamin Chen
68dec02b3d skip klog init
Signed-off-by: Huamin Chen <hchen@redhat.com>
2019-02-05 10:15:18 -05:00
Humble Chirammal
f4a1d578a2 Fix build failure
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
2019-02-05 12:09:04 +00:00
Humble Chirammal
49d0c23812 Add klog.InitFlags to main.go
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
2019-02-05 12:09:04 +00:00
Madhu Rajanna
7a0c233c27 Fix issues found in gometalinter
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
2019-01-29 11:20:35 +05:30
Madhu Rajanna
25642fe404 Add method comments
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
2019-01-29 11:20:35 +05:30
Madhu Rajanna
e4e411248e Move ceph and rbd main files to cmd folder
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
2019-01-28 15:40:01 +05:30