A new controller to bootstrap ceph-crash pod on Ceph nodes running Ceph
pods only.
This implementation is unfortunately a mix of 'hacks' to make the daemon
working correclty. The ceph-crash script faced different issues:
* it's not a daemon
* it does not have any key in cephx
* it runs ceph commands under the hood which need an admin key and a
ceph.conf
On upstream Ceph, ceph-crash needs to grow better, once that happens we
will improve our implementation.
This also enhances osd provisionConfig struct with DataPathMap
Pod volumes and volume mount needs DataPathMap to perform the right
actions on log and crash dir. Exposing DataPathMap makes that possible.
Obviously, this is exposing ceph crash reports on the host as
well as pushing them into the mgr.
Basically, if a daemon fails, it'll put its core dump into
/var/lib/ceph/crash, bindmounting this dir on the host, ensures that the
crashes don't get lost when the pod dies.
Example:
```
[leseb@tarox~/go/src/github.com/rook/rook][rgw-liveprobe !] kubectl -n rook-ceph exec -ti rook-ceph-crashcollector-minikube-574858b99c-zvg4z bash
bash: warning: setlocale: LC_CTYPE: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_COLLATE: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_MESSAGES: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_NUMERIC: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_TIME: cannot change locale (en_US.UTF-8): No such file or directory
[root@rook-ceph-crashcollector-minikube-574858b99c-zvg4z /]# ceph crash ls
[root@rook-ceph-osd-2-7644f99695-cljzh /]# pidof ceph-osd
13258 5415 5397
[root@rook-ceph-osd-2-7644f99695-cljzh /]# kill -SIGABRT 13258
[root@rook-ceph-osd-2-7644f99695-cljzh /]# ls /var/lib/ceph/crash/
2019-11-12_12:56:51.404109Z_39f060e1-776d-4605-8f28-85c97e53de96 posted
... wait maximum 10 min (ceph-crash scraps every 10 minutes)
... the container will exit
[root@rook-ceph-osd-2-7644f99695-cljzh /]# exit
[leseb@tarox~/go/src/github.com/rook/rook][rgw-liveprobe !]
[leseb@tarox~/go/src/github.com/rook/rook][rgw-liveprobe !] kubectl -n rook-ceph exec -ti rook-ceph-crashcollector-minikube-574858b99c-zvg4z bash
bash: warning: setlocale: LC_CTYPE: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_COLLATE: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_MESSAGES: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_NUMERIC: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_TIME: cannot change locale (en_US.UTF-8): No such file or directory
[root@rook-ceph-crashcollector-minikube-574858b99c-zvg4z /]#
[root@rook-ceph-crashcollector-minikube-574858b99c-zvg4z /]#
[root@rook-ceph-crashcollector-minikube-574858b99c-zvg4z /]# ceph crash ls
2019-11-12_12:56:51.404109Z_39f060e1-776d-4605-8f28-85c97e53de96 osd.1
[root@rook-ceph-crashcollector-minikube-574858b99c-zvg4z /]# ls /var/lib/ceph/crash/
posted
[root@rook-ceph-crashcollector-minikube-574858b99c-zvg4z /]# ls /var/lib/ceph/crash/posted/
2019-11-12_12:56:51.404109Z_39f060e1-776d-4605-8f28-85c97e53de96
[root@rook-ceph-crashcollector-minikube-574858b99c-zvg4z /]# tail /var/lib/ceph/crash/posted/2019-11-12_12\:56\:51.404109Z_39f060e1-776d-4605-8f28-85c97e53de96/log
1/ 5 mgr
1/ 5 mgrc
1/ 5 dpdk
1/ 5 eventtrace
-2/-2 (syslog threshold)
-1/-1 (stderr threshold)
max_recent 10000
max_new 1000
log_file /var/lib/ceph/crash/2019-11-12_12:56:51.404109Z_39f060e1-776d-4605-8f28-85c97e53de96/log
--- end dump of recent events ---
```
Signed-off-by: Sébastien Han <seb@redhat.com>
Co-authored-by: Rohan CJ <rohantmp@gmail.com>
Change the canaries to use the rook image instead of the busybox image to
run `sleep infinity`. This removes our dependency on an external image that
we do not control.
Signed-off-by: Rohan CJ <rohantmp@gmail.com>
Sébastien HanandRohan CJ