qa/cephadm: add teuthology test for host draining

This was a gap in our testing in general, but I'm
adding it here right now specifically to use it
to test the "--rm-crush-entry" flag in a follow
up commit

Signed-off-by: Adam King <adking@redhat.com>
(cherry picked from commit 13f16e8d7bb029980d6688680390521253970e9a)

diff --git a/qa/suites/orch/cephadm/workunits/task/test_host_drain.yaml b/qa/suites/orch/cephadm/workunits/task/test_host_drain.yaml
new file mode 100644 (file)
index 0000000..c73d2cd
--- /dev/null
+++ b/qa/suites/orch/cephadm/workunits/task/test_host_drain.yaml
@@ -0,0 +1,46 @@
+roles:
+- - host.a
+  - mon.a
+  - mgr.a
+  - osd.0
+  - osd.1
+- - host.b
+  - mon.b
+  - mgr.b
+  - osd.2
+  - osd.3
+- - host.c
+  - mon.c
+  - osd.4
+  - osd.5
+tasks:
+- install:
+- cephadm:
+- cephadm.shell:
+    host.a:
+      - |
+        set -ex
+        HOSTNAMES=$(ceph orch host ls --format json | jq -r '.[] | .hostname')
+        for host in $HOSTNAMES; do
+          # find the hostname for "host.c" which will have no mgr
+          HAS_MGRS=$(ceph orch ps --hostname ${host} --format json | jq 'any(.daemon_type == "mgr")')
+          if [ "$HAS_MGRS" == "false" ]; then
+            HOST_C="${host}"
+          fi
+        done
+        # now drain that host
+        ceph orch host drain $HOST_C --zap-osd-devices
+        # wait for drain to complete
+        HOST_C_DAEMONS=$(ceph orch ps --hostname $HOST_C)
+        while [ "$HOST_C_DAEMONS" != "No daemons reported" ]; do
+          sleep 15
+          HOST_C_DAEMONS=$(ceph orch ps --hostname $HOST_C)
+        done
+        # If the drain was successful, we should be able to remove the
+        # host without force with no issues. If there are still daemons
+        # we will get a response telling us to drain the host and a
+        # non-zero return code
+        ceph orch host rm $HOST_C
+        
+        
+