root / hspace.hs @ 23f9ab76
History | View | Annotate | Download (12.4 kB)
1 |
{-| Cluster space sizing |
---|---|
2 |
|
3 |
-} |
4 |
|
5 |
{- |
6 |
|
7 |
Copyright (C) 2009 Google Inc. |
8 |
|
9 |
This program is free software; you can redistribute it and/or modify |
10 |
it under the terms of the GNU General Public License as published by |
11 |
the Free Software Foundation; either version 2 of the License, or |
12 |
(at your option) any later version. |
13 |
|
14 |
This program is distributed in the hope that it will be useful, but |
15 |
WITHOUT ANY WARRANTY; without even the implied warranty of |
16 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 |
General Public License for more details. |
18 |
|
19 |
You should have received a copy of the GNU General Public License |
20 |
along with this program; if not, write to the Free Software |
21 |
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
22 |
02110-1301, USA. |
23 |
|
24 |
-} |
25 |
|
26 |
module Main (main) where |
27 |
|
28 |
import Data.Char (toUpper, isAlphaNum) |
29 |
import Data.List |
30 |
import Data.Function |
31 |
import Data.Maybe (isJust, fromJust) |
32 |
import Monad |
33 |
import System |
34 |
import System.IO |
35 |
import qualified System |
36 |
|
37 |
import Text.Printf (printf, hPrintf) |
38 |
|
39 |
import qualified Ganeti.HTools.Container as Container |
40 |
import qualified Ganeti.HTools.Cluster as Cluster |
41 |
import qualified Ganeti.HTools.Node as Node |
42 |
import qualified Ganeti.HTools.Instance as Instance |
43 |
|
44 |
import Ganeti.HTools.Utils |
45 |
import Ganeti.HTools.Types |
46 |
import Ganeti.HTools.CLI |
47 |
import Ganeti.HTools.ExtLoader |
48 |
|
49 |
-- | Options list and functions |
50 |
options :: [OptType] |
51 |
options = |
52 |
[ oPrintNodes |
53 |
, oDataFile |
54 |
, oNodeSim |
55 |
, oRapiMaster |
56 |
, oLuxiSocket |
57 |
, oVerbose |
58 |
, oQuiet |
59 |
, oOfflineNode |
60 |
, oIMem |
61 |
, oIDisk |
62 |
, oIVcpus |
63 |
, oINodes |
64 |
, oMaxCpu |
65 |
, oMinDisk |
66 |
, oTieredSpec |
67 |
, oShowVer |
68 |
, oShowHelp |
69 |
] |
70 |
|
71 |
-- | The allocation phase we're in (initial, after tiered allocs, or |
72 |
-- after regular allocation). |
73 |
data Phase = PInitial |
74 |
| PFinal |
75 |
| PTiered |
76 |
|
77 |
statsData :: [(String, Cluster.CStats -> String)] |
78 |
statsData = [ ("SCORE", printf "%.8f" . Cluster.csScore) |
79 |
, ("INST_CNT", printf "%d" . Cluster.csNinst) |
80 |
, ("MEM_FREE", printf "%d" . Cluster.csFmem) |
81 |
, ("MEM_AVAIL", printf "%d" . Cluster.csAmem) |
82 |
, ("MEM_RESVD", |
83 |
\cs -> printf "%d" (Cluster.csFmem cs - Cluster.csAmem cs)) |
84 |
, ("MEM_INST", printf "%d" . Cluster.csImem) |
85 |
, ("MEM_OVERHEAD", |
86 |
\cs -> printf "%d" (Cluster.csXmem cs + Cluster.csNmem cs)) |
87 |
, ("MEM_EFF", |
88 |
\cs -> printf "%.8f" (fromIntegral (Cluster.csImem cs) / |
89 |
Cluster.csTmem cs)) |
90 |
, ("DSK_FREE", printf "%d" . Cluster.csFdsk) |
91 |
, ("DSK_AVAIL", printf "%d". Cluster.csAdsk) |
92 |
, ("DSK_RESVD", |
93 |
\cs -> printf "%d" (Cluster.csFdsk cs - Cluster.csAdsk cs)) |
94 |
, ("DSK_INST", printf "%d" . Cluster.csIdsk) |
95 |
, ("DSK_EFF", |
96 |
\cs -> printf "%.8f" (fromIntegral (Cluster.csIdsk cs) / |
97 |
Cluster.csTdsk cs)) |
98 |
, ("CPU_INST", printf "%d" . Cluster.csIcpu) |
99 |
, ("CPU_EFF", |
100 |
\cs -> printf "%.8f" (fromIntegral (Cluster.csIcpu cs) / |
101 |
Cluster.csTcpu cs)) |
102 |
, ("MNODE_MEM_AVAIL", printf "%d" . Cluster.csMmem) |
103 |
, ("MNODE_DSK_AVAIL", printf "%d" . Cluster.csMdsk) |
104 |
] |
105 |
|
106 |
specData :: [(String, RSpec -> String)] |
107 |
specData = [ ("MEM", printf "%d" . rspecMem) |
108 |
, ("DSK", printf "%d" . rspecDsk) |
109 |
, ("CPU", printf "%d" . rspecCpu) |
110 |
] |
111 |
|
112 |
clusterData :: [(String, Cluster.CStats -> String)] |
113 |
clusterData = [ ("MEM", printf "%.0f" . Cluster.csTmem) |
114 |
, ("DSK", printf "%.0f" . Cluster.csTdsk) |
115 |
, ("CPU", printf "%.0f" . Cluster.csTcpu) |
116 |
] |
117 |
|
118 |
-- | Recursively place instances on the cluster until we're out of space |
119 |
iterateDepth :: Node.List |
120 |
-> Instance.List |
121 |
-> Instance.Instance |
122 |
-> Int |
123 |
-> [Instance.Instance] |
124 |
-> Result (FailStats, Node.List, [Instance.Instance]) |
125 |
iterateDepth nl il newinst nreq ixes = |
126 |
let depth = length ixes |
127 |
newname = printf "new-%d" depth::String |
128 |
newidx = length (Container.elems il) + depth |
129 |
newi2 = Instance.setIdx (Instance.setName newinst newname) newidx |
130 |
in case Cluster.tryAlloc nl il newi2 nreq of |
131 |
Bad s -> Bad s |
132 |
Ok (errs, _, sols3) -> |
133 |
case sols3 of |
134 |
[] -> Ok (Cluster.collapseFailures errs, nl, ixes) |
135 |
(_, (xnl, xi, _)):[] -> |
136 |
iterateDepth xnl il newinst nreq $! (xi:ixes) |
137 |
_ -> Bad "Internal error: multiple solutions for single\ |
138 |
\ allocation" |
139 |
|
140 |
tieredAlloc :: Node.List |
141 |
-> Instance.List |
142 |
-> Instance.Instance |
143 |
-> Int |
144 |
-> [Instance.Instance] |
145 |
-> Result (FailStats, Node.List, [Instance.Instance]) |
146 |
tieredAlloc nl il newinst nreq ixes = |
147 |
case iterateDepth nl il newinst nreq ixes of |
148 |
Bad s -> Bad s |
149 |
Ok (errs, nl', ixes') -> |
150 |
case Instance.shrinkByType newinst . fst . last $ |
151 |
sortBy (compare `on` snd) errs of |
152 |
Bad _ -> Ok (errs, nl', ixes') |
153 |
Ok newinst' -> |
154 |
tieredAlloc nl' il newinst' nreq ixes' |
155 |
|
156 |
|
157 |
-- | Function to print stats for a given phase |
158 |
printStats :: Phase -> Cluster.CStats -> [(String, String)] |
159 |
printStats ph cs = |
160 |
map (\(s, fn) -> (printf "%s_%s" kind s, fn cs)) statsData |
161 |
where kind = case ph of |
162 |
PInitial -> "INI" |
163 |
PFinal -> "FIN" |
164 |
PTiered -> "TRL" |
165 |
|
166 |
-- | Print final stats and related metrics |
167 |
printResults :: Node.List -> Int -> Int -> [(FailMode, Int)] -> IO () |
168 |
printResults fin_nl num_instances allocs sreason = do |
169 |
let fin_stats = Cluster.totalResources fin_nl |
170 |
fin_instances = num_instances + allocs |
171 |
|
172 |
when (num_instances + allocs /= Cluster.csNinst fin_stats) $ |
173 |
do |
174 |
hPrintf stderr "ERROR: internal inconsistency, allocated (%d)\ |
175 |
\ != counted (%d)\n" (num_instances + allocs) |
176 |
(Cluster.csNinst fin_stats) |
177 |
exitWith $ ExitFailure 1 |
178 |
|
179 |
printKeys $ printStats PFinal fin_stats |
180 |
printKeys [ ("ALLOC_USAGE", printf "%.8f" |
181 |
((fromIntegral num_instances::Double) / |
182 |
fromIntegral fin_instances)) |
183 |
, ("ALLOC_INSTANCES", printf "%d" allocs) |
184 |
, ("ALLOC_FAIL_REASON", map toUpper . show . fst $ head sreason) |
185 |
] |
186 |
printKeys $ map (\(x, y) -> (printf "ALLOC_%s_CNT" (show x), |
187 |
printf "%d" y)) sreason |
188 |
-- this should be the final entry |
189 |
printKeys [("OK", "1")] |
190 |
|
191 |
-- | Ensure a value is quoted if needed |
192 |
ensureQuoted :: String -> String |
193 |
ensureQuoted v = if not (all (\c -> (isAlphaNum c || c == '.')) v) |
194 |
then '\'':v ++ "'" |
195 |
else v |
196 |
|
197 |
-- | Format a list of key/values as a shell fragment |
198 |
printKeys :: [(String, String)] -> IO () |
199 |
printKeys = mapM_ (\(k, v) -> |
200 |
printf "HTS_%s=%s\n" (map toUpper k) (ensureQuoted v)) |
201 |
|
202 |
printInstance :: Node.List -> Instance.Instance -> [String] |
203 |
printInstance nl i = [ Instance.name i |
204 |
, (Container.nameOf nl $ Instance.pNode i) |
205 |
, (let sdx = Instance.sNode i |
206 |
in if sdx == Node.noSecondary then "" |
207 |
else Container.nameOf nl sdx) |
208 |
, show (Instance.mem i) |
209 |
, show (Instance.dsk i) |
210 |
, show (Instance.vcpus i) |
211 |
] |
212 |
|
213 |
-- | Main function. |
214 |
main :: IO () |
215 |
main = do |
216 |
cmd_args <- System.getArgs |
217 |
(opts, args) <- parseOpts cmd_args "hspace" options |
218 |
|
219 |
unless (null args) $ do |
220 |
hPutStrLn stderr "Error: this program doesn't take any arguments." |
221 |
exitWith $ ExitFailure 1 |
222 |
|
223 |
let verbose = optVerbose opts |
224 |
ispec = optISpec opts |
225 |
shownodes = optShowNodes opts |
226 |
|
227 |
(fixed_nl, il, _, csf) <- loadExternalData opts |
228 |
|
229 |
printKeys $ map (\(a, fn) -> ("SPEC_" ++ a, fn ispec)) specData |
230 |
printKeys [ ("SPEC_RQN", printf "%d" (optINodes opts)) ] |
231 |
|
232 |
let num_instances = length $ Container.elems il |
233 |
|
234 |
let offline_names = optOffline opts |
235 |
all_nodes = Container.elems fixed_nl |
236 |
all_names = map Node.name all_nodes |
237 |
offline_wrong = filter (flip notElem all_names) offline_names |
238 |
offline_indices = map Node.idx $ |
239 |
filter (\n -> elem (Node.name n) offline_names) |
240 |
all_nodes |
241 |
req_nodes = optINodes opts |
242 |
m_cpu = optMcpu opts |
243 |
m_dsk = optMdsk opts |
244 |
|
245 |
when (length offline_wrong > 0) $ do |
246 |
hPrintf stderr "Error: Wrong node name(s) set as offline: %s\n" |
247 |
(commaJoin offline_wrong) |
248 |
exitWith $ ExitFailure 1 |
249 |
|
250 |
when (req_nodes /= 1 && req_nodes /= 2) $ do |
251 |
hPrintf stderr "Error: Invalid required nodes (%d)\n" req_nodes |
252 |
exitWith $ ExitFailure 1 |
253 |
|
254 |
let nm = Container.map (\n -> if elem (Node.idx n) offline_indices |
255 |
then Node.setOffline n True |
256 |
else n) fixed_nl |
257 |
nl = Container.map (flip Node.setMdsk m_dsk . flip Node.setMcpu m_cpu) |
258 |
nm |
259 |
|
260 |
when (length csf > 0 && verbose > 1) $ |
261 |
hPrintf stderr "Note: Stripping common suffix of '%s' from names\n" csf |
262 |
|
263 |
when (isJust shownodes) $ |
264 |
do |
265 |
hPutStrLn stderr "Initial cluster status:" |
266 |
hPutStrLn stderr $ Cluster.printNodes nl (fromJust shownodes) |
267 |
|
268 |
let ini_cv = Cluster.compCV nl |
269 |
ini_stats = Cluster.totalResources nl |
270 |
|
271 |
when (verbose > 2) $ |
272 |
hPrintf stderr "Initial coefficients: overall %.8f, %s\n" |
273 |
ini_cv (Cluster.printStats nl) |
274 |
|
275 |
printKeys $ map (\(a, fn) -> ("CLUSTER_" ++ a, fn ini_stats)) clusterData |
276 |
printKeys [("CLUSTER_NODES", printf "%d" (length all_nodes))] |
277 |
printKeys $ printStats PInitial ini_stats |
278 |
|
279 |
let bad_nodes = fst $ Cluster.computeBadItems nl il |
280 |
when (length bad_nodes > 0) $ do |
281 |
-- This is failn1 case, so we print the same final stats and |
282 |
-- exit early |
283 |
printResults nl num_instances 0 [(FailN1, 1)] |
284 |
exitWith ExitSuccess |
285 |
|
286 |
-- utility functions |
287 |
let iofspec spx = Instance.create "new" (rspecMem spx) (rspecDsk spx) |
288 |
(rspecCpu spx) "ADMIN_down" [] (-1) (-1) |
289 |
exitifbad val = (case val of |
290 |
Bad s -> do |
291 |
hPrintf stderr "Failure: %s\n" s |
292 |
exitWith $ ExitFailure 1 |
293 |
Ok x -> return x) |
294 |
|
295 |
|
296 |
let reqinst = iofspec ispec |
297 |
|
298 |
-- Run the tiered allocation, if enabled |
299 |
|
300 |
(case optTieredSpec opts of |
301 |
Nothing -> return () |
302 |
Just tspec -> do |
303 |
let tresu = tieredAlloc nl il (iofspec tspec) req_nodes [] |
304 |
(_, trl_nl, trl_ixes) <- exitifbad tresu |
305 |
let fin_trl_ixes = reverse trl_ixes |
306 |
ix_byspec = groupBy ((==) `on` Instance.specOf) fin_trl_ixes |
307 |
spec_map = map (\ixs -> (Instance.specOf $ head ixs, length ixs)) |
308 |
ix_byspec::[(RSpec, Int)] |
309 |
spec_map' = map (\(spec, cnt) -> |
310 |
printf "%d,%d,%d=%d" (rspecMem spec) |
311 |
(rspecDsk spec) (rspecCpu spec) cnt) |
312 |
spec_map::[String] |
313 |
|
314 |
when (verbose > 1) $ do |
315 |
hPutStrLn stderr "Tiered allocation map" |
316 |
hPutStr stderr . unlines . map ((:) ' ' . intercalate " ") $ |
317 |
formatTable (map (printInstance trl_nl) fin_trl_ixes) |
318 |
[False, False, False, True, True, True] |
319 |
|
320 |
when (isJust shownodes) $ do |
321 |
hPutStrLn stderr "" |
322 |
hPutStrLn stderr "Tiered allocation status:" |
323 |
hPutStrLn stderr $ Cluster.printNodes trl_nl (fromJust shownodes) |
324 |
|
325 |
printKeys $ printStats PTiered (Cluster.totalResources trl_nl) |
326 |
printKeys [("TSPEC", intercalate " " spec_map')]) |
327 |
|
328 |
-- Run the standard (avg-mode) allocation |
329 |
|
330 |
let result = iterateDepth nl il reqinst req_nodes [] |
331 |
(ereason, fin_nl, ixes) <- exitifbad result |
332 |
|
333 |
let allocs = length ixes |
334 |
fin_ixes = reverse ixes |
335 |
sreason = reverse $ sortBy (compare `on` snd) ereason |
336 |
|
337 |
when (verbose > 1) $ do |
338 |
hPutStrLn stderr "Instance map" |
339 |
hPutStr stderr . unlines . map ((:) ' ' . intercalate " ") $ |
340 |
formatTable (map (printInstance fin_nl) fin_ixes) |
341 |
[False, False, False, True, True, True] |
342 |
when (isJust shownodes) $ |
343 |
do |
344 |
hPutStrLn stderr "" |
345 |
hPutStrLn stderr "Final cluster status:" |
346 |
hPutStrLn stderr $ Cluster.printNodes fin_nl (fromJust shownodes) |
347 |
|
348 |
printResults fin_nl num_instances allocs sreason |