Add snap-server to the test-relevenat packages
[ganeti-local] / qa / qa_group.py
1 #
2 #
3
4 # Copyright (C) 2010, 2011, 2012 Google Inc.
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19 # 02110-1301, USA.
20
21
22 """QA tests for node groups.
23
24 """
25
26 from ganeti import constants
27 from ganeti import query
28 from ganeti import utils
29
30 import qa_config
31 import qa_utils
32
33 from qa_utils import AssertCommand, AssertEqual, GetCommandOutput
34
35
36 def GetDefaultGroup():
37   """Returns the default node group.
38
39   """
40   groups = qa_config.get("groups", {})
41   return groups.get("group-with-nodes", constants.INITIAL_NODE_GROUP_NAME)
42
43
44 def TestGroupAddRemoveRename():
45   """gnt-group add/remove/rename"""
46   existing_group_with_nodes = GetDefaultGroup()
47
48   (group1, group2, group3) = qa_utils.GetNonexistentGroups(3)
49
50   AssertCommand(["gnt-group", "add", group1])
51   AssertCommand(["gnt-group", "add", group2])
52   AssertCommand(["gnt-group", "add", group2], fail=True)
53   AssertCommand(["gnt-group", "add", existing_group_with_nodes], fail=True)
54
55   AssertCommand(["gnt-group", "rename", group1, group2], fail=True)
56   AssertCommand(["gnt-group", "rename", group1, group3])
57
58   try:
59     AssertCommand(["gnt-group", "rename", existing_group_with_nodes, group1])
60
61     AssertCommand(["gnt-group", "remove", group2])
62     AssertCommand(["gnt-group", "remove", group3])
63     AssertCommand(["gnt-group", "remove", group1], fail=True)
64   finally:
65     # Try to ensure idempotency re groups that already existed.
66     AssertCommand(["gnt-group", "rename", group1, existing_group_with_nodes])
67
68
69 def TestGroupAddWithOptions():
70   """gnt-group add with options"""
71   (group1, ) = qa_utils.GetNonexistentGroups(1)
72
73   AssertCommand(["gnt-group", "add", "--alloc-policy", "notvalid", group1],
74                 fail=True)
75
76   AssertCommand(["gnt-group", "add", "--alloc-policy", "last_resort",
77                  "--node-parameters", "oob_program=/bin/true", group1])
78
79   AssertCommand(["gnt-group", "remove", group1])
80
81
82 def _GetGroupIPolicy(groupname):
83   """Return the run-time values of the cluster-level instance policy.
84
85   @type groupname: string
86   @param groupname: node group name
87   @rtype: tuple
88   @return: (policy, specs), where:
89       - policy is a dictionary of the policy values, instance specs excluded
90       - specs is a dictionary containing only the specs, using the internal
91         format (see L{constants.IPOLICY_DEFAULTS} for an example), but without
92         the standard values
93
94   """
95   info = qa_utils.GetObjectInfo(["gnt-group", "info", groupname])
96   assert len(info) == 1
97   policy = info[0]["Instance policy"]
98
99   (ret_policy, ret_specs) = qa_utils.ParseIPolicy(policy)
100
101   # Sanity checks
102   assert "minmax" in ret_specs
103   assert len(ret_specs["minmax"]) > 0
104   assert len(ret_policy) > 0
105   return (ret_policy, ret_specs)
106
107
108 def _TestGroupSetISpecs(groupname, new_specs=None, diff_specs=None,
109                         fail=False, old_values=None):
110   """Change instance specs on a group.
111
112   At most one of new_specs or diff_specs can be specified.
113
114   @type groupname: string
115   @param groupname: group name
116   @type new_specs: dict
117   @param new_specs: new complete specs, in the same format returned by
118       L{_GetGroupIPolicy}
119   @type diff_specs: dict
120   @param diff_specs: partial specs, it can be an incomplete specifications, but
121       if min/max specs are specified, their number must match the number of the
122       existing specs
123   @type fail: bool
124   @param fail: if the change is expected to fail
125   @type old_values: tuple
126   @param old_values: (old_policy, old_specs), as returned by
127       L{_GetGroupIPolicy}
128   @return: same as L{_GetGroupIPolicy}
129
130   """
131   build_cmd = lambda opts: ["gnt-group", "modify"] + opts + [groupname]
132   get_policy = lambda: _GetGroupIPolicy(groupname)
133   return qa_utils.TestSetISpecs(
134     new_specs=new_specs, diff_specs=diff_specs,
135     get_policy_fn=get_policy, build_cmd_fn=build_cmd,
136     fail=fail, old_values=old_values)
137
138
139 def _TestGroupModifyISpecs(groupname):
140   # This test is built on the assumption that the default ipolicy holds for
141   # the node group under test
142   old_values = _GetGroupIPolicy(groupname)
143   samevals = dict((p, 4) for p in constants.ISPECS_PARAMETERS)
144   base_specs = {
145     constants.ISPECS_MINMAX: [{
146       constants.ISPECS_MIN: samevals,
147       constants.ISPECS_MAX: samevals,
148       }],
149     }
150   mod_values = _TestGroupSetISpecs(groupname, new_specs=base_specs,
151                                    old_values=old_values)
152   for par in constants.ISPECS_PARAMETERS:
153     # First make sure that the test works with good values
154     good_specs = {
155       constants.ISPECS_MINMAX: [{
156         constants.ISPECS_MIN: {par: 8},
157         constants.ISPECS_MAX: {par: 8},
158         }],
159       }
160     mod_values = _TestGroupSetISpecs(groupname, diff_specs=good_specs,
161                                      old_values=mod_values)
162     bad_specs = {
163       constants.ISPECS_MINMAX: [{
164         constants.ISPECS_MIN: {par: 8},
165         constants.ISPECS_MAX: {par: 4},
166         }],
167       }
168     _TestGroupSetISpecs(groupname, diff_specs=bad_specs, fail=True,
169                         old_values=mod_values)
170   AssertCommand(["gnt-group", "modify", "--ipolicy-bounds-specs", "default",
171                  groupname])
172   AssertEqual(_GetGroupIPolicy(groupname), old_values)
173
174   # Get the ipolicy command (from the cluster config)
175   mnode = qa_config.GetMasterNode()
176   addcmd = GetCommandOutput(mnode.primary, utils.ShellQuoteArgs([
177     "gnt-group", "show-ispecs-cmd", "--include-defaults", groupname,
178     ]))
179   modcmd = ["gnt-group", "modify"]
180   opts = addcmd.split()
181   assert opts[0:2] == ["gnt-group", "add"]
182   for k in range(2, len(opts) - 1):
183     if opts[k].startswith("--ipolicy-"):
184       assert k + 2 <= len(opts)
185       modcmd.extend(opts[k:k + 2])
186   modcmd.append(groupname)
187   # Apply the ipolicy to the group and verify the result
188   AssertCommand(modcmd)
189   new_addcmd = GetCommandOutput(mnode.primary, utils.ShellQuoteArgs([
190     "gnt-group", "show-ispecs-cmd", groupname,
191     ]))
192   AssertEqual(addcmd, new_addcmd)
193
194
195 def _TestGroupModifyIPolicy(groupname):
196   _TestGroupModifyISpecs(groupname)
197
198   # We assume that the default ipolicy holds
199   (old_policy, old_specs) = _GetGroupIPolicy(groupname)
200   for (par, setval, iname, expval) in [
201     ("vcpu-ratio", 1.5, None, 1.5),
202     ("spindle-ratio", 1.5, None, 1.5),
203     ("disk-templates", constants.DT_PLAIN,
204      "allowed disk templates", constants.DT_PLAIN)
205     ]:
206     if not iname:
207       iname = par
208     build_cmdline = lambda val: ["gnt-group", "modify", "--ipolicy-" + par,
209                                  str(val), groupname]
210
211     AssertCommand(build_cmdline(setval))
212     (new_policy, new_specs) = _GetGroupIPolicy(groupname)
213     AssertEqual(new_specs, old_specs)
214     for (p, val) in new_policy.items():
215       if p == iname:
216         AssertEqual(val, expval)
217       else:
218         AssertEqual(val, old_policy[p])
219
220     AssertCommand(build_cmdline("default"))
221     (new_policy, new_specs) = _GetGroupIPolicy(groupname)
222     AssertEqual(new_specs, old_specs)
223     AssertEqual(new_policy, old_policy)
224
225
226 def TestGroupModify():
227   """gnt-group modify"""
228   (group1, ) = qa_utils.GetNonexistentGroups(1)
229
230   AssertCommand(["gnt-group", "add", group1])
231
232   try:
233     _TestGroupModifyIPolicy(group1)
234     AssertCommand(["gnt-group", "modify", "--alloc-policy", "unallocable",
235                    "--node-parameters", "oob_program=/bin/false", group1])
236     AssertCommand(["gnt-group", "modify",
237                    "--alloc-policy", "notvalid", group1], fail=True)
238     AssertCommand(["gnt-group", "modify",
239                    "--node-parameters", "spindle_count=10", group1])
240     if qa_config.TestEnabled("htools"):
241       AssertCommand(["hbal", "-L", "-G", group1])
242     AssertCommand(["gnt-group", "modify",
243                    "--node-parameters", "spindle_count=default", group1])
244   finally:
245     AssertCommand(["gnt-group", "remove", group1])
246
247
248 def TestGroupList():
249   """gnt-group list"""
250   qa_utils.GenericQueryTest("gnt-group", query.GROUP_FIELDS.keys())
251
252
253 def TestGroupListFields():
254   """gnt-group list-fields"""
255   qa_utils.GenericQueryFieldsTest("gnt-group", query.GROUP_FIELDS.keys())
256
257
258 def TestAssignNodesIncludingSplit(orig_group, node1, node2):
259   """gnt-group assign-nodes --force
260
261   Expects node1 and node2 to be primary and secondary for a common instance.
262
263   """
264   assert node1 != node2
265
266   (other_group, ) = qa_utils.GetNonexistentGroups(1)
267
268   master_node = qa_config.GetMasterNode().primary
269
270   def AssertInGroup(group, nodes):
271     real_output = GetCommandOutput(master_node,
272                                    "gnt-node list --no-headers -o group " +
273                                    utils.ShellQuoteArgs(nodes))
274     AssertEqual(real_output.splitlines(), [group] * len(nodes))
275
276   AssertInGroup(orig_group, [node1, node2])
277   AssertCommand(["gnt-group", "add", other_group])
278
279   try:
280     AssertCommand(["gnt-group", "assign-nodes", other_group, node1, node2])
281     AssertInGroup(other_group, [node1, node2])
282
283     # This should fail because moving node1 to orig_group would leave their
284     # common instance split between orig_group and other_group.
285     AssertCommand(["gnt-group", "assign-nodes", orig_group, node1], fail=True)
286     AssertInGroup(other_group, [node1, node2])
287
288     AssertCommand(["gnt-group", "assign-nodes", "--force", orig_group, node1])
289     AssertInGroup(orig_group, [node1])
290     AssertInGroup(other_group, [node2])
291
292     AssertCommand(["gnt-group", "assign-nodes", orig_group, node2])
293     AssertInGroup(orig_group, [node1, node2])
294   finally:
295     AssertCommand(["gnt-group", "remove", other_group])