import Data.List
import Data.Function
-import Data.Maybe (isJust, fromJust, fromMaybe, isNothing)
import Monad
import System
import System.IO
import qualified Ganeti.HTools.CLI as CLI
import Ganeti.HTools.Utils
+import Ganeti.HTools.Types
-- | Command line options structure.
data Options = Options
, optIDsk :: Int -- ^ Instance disk
, optIVCPUs :: Int -- ^ Instance VCPUs
, optINodes :: Int -- ^ Nodes required for an instance
+ , optMcpu :: Double -- ^ Max cpu ratio for nodes
+ , optMdsk :: Double -- ^ Max disk usage ratio for nodes
, optShowVer :: Bool -- ^ Just show the program version
, optShowHelp :: Bool -- ^ Just show the help
} deriving Show
instFile = optInstf
instSet = optInstSet
masterName = optMaster
- silent a = (optVerbose a) == 0
+ silent a = optVerbose a == 0
-- | Default values for the command line options.
defaultOptions :: Options
, optIDsk = 102400
, optIVCPUs = 1
, optINodes = 2
+ , optMcpu = -1
+ , optMdsk = -1
, optShowVer = False
, optShowHelp = False
}
(ReqArg (\ m opts -> opts { optMaster = m }) "ADDRESS")
"collect data via RAPI at the given ADDRESS"
, Option ['v'] ["verbose"]
- (NoArg (\ opts -> opts { optVerbose = (optVerbose opts) + 1 }))
+ (NoArg (\ opts -> opts { optVerbose = optVerbose opts + 1 }))
"increase the verbosity level"
, Option ['q'] ["quiet"]
- (NoArg (\ opts -> opts { optVerbose = (optVerbose opts) - 1 }))
+ (NoArg (\ opts -> opts { optVerbose = optVerbose opts - 1 }))
"decrease the verbosity level"
, Option ['O'] ["offline"]
(ReqArg (\ n opts -> opts { optOffline = n:optOffline opts }) "NODE")
, Option [] ["req-nodes"]
(ReqArg (\ n opts -> opts { optINodes = read n }) "NODES")
"number of nodes for the new instances (1=plain, 2=mirrored)"
+ , Option [] ["max-cpu"]
+ (ReqArg (\ n opts -> opts { optMcpu = read n }) "RATIO")
+ "maximum virtual-to-physical cpu ratio for nodes"
+ , Option [] ["min-disk"]
+ (ReqArg (\ n opts -> opts { optMdsk = read n }) "RATIO")
+ "minimum free disk space for nodes (between 0 and 1)"
, Option ['V'] ["version"]
(NoArg (\ opts -> opts { optShowVer = True}))
"show the version of the program"
"show help"
]
-filterFails :: (Monad m) => [(Maybe Node.List, Instance.Instance, [Node.Node])]
- -> m [(Node.List, Instance.Instance, [Node.Node])]
+-- | Build failure stats out of a list of failure reasons
+concatFailure :: [(FailMode, Int)] -> FailMode -> [(FailMode, Int)]
+concatFailure flst reason =
+ let cval = lookup reason flst
+ in case cval of
+ Nothing -> (reason, 1):flst
+ Just val -> let plain = filter (\(x, _) -> x /= reason) flst
+ in (reason, val+1):plain
+
+-- | Build list of failures and placements out of an list of possible
+-- | allocations
+filterFails :: Cluster.AllocSolution
+ -> ([(FailMode, Int)],
+ [(Node.List, Instance.Instance, [Node.Node])])
filterFails sols =
- if null sols then fail "No nodes onto which to allocate at all"
- else let sols' = filter (isJust . fst3) sols
- in if null sols' then
- fail "No valid allocation solutions"
- else
- return $ map (\(x, y, z) -> (fromJust x, y, z)) sols'
-
-processResults :: (Monad m) => [(Node.List, Instance.Instance, [Node.Node])]
- -> m (Node.List, Instance.Instance, [Node.Node])
+ let (alst, blst) = unzip . map (\ (onl, i, nn) ->
+ case onl of
+ OpFail reason -> ([reason], [])
+ OpGood gnl -> ([], [(gnl, i, nn)])
+ ) $ sols
+ aval = concat alst
+ bval = concat blst
+ in (foldl' concatFailure [] aval, bval)
+
+-- | Get the placement with best score out of a list of possible placements
+processResults :: [(Node.List, Instance.Instance, [Node.Node])]
+ -> (Node.List, Instance.Instance, [Node.Node])
processResults sols =
let sols' = map (\e@(nl', _, _) -> (Cluster.compCV nl', e)) sols
sols'' = sortBy (compare `on` fst) sols'
- in return $ snd $ head sols''
+ in snd $ head sols''
+-- | Recursively place instances on the cluster until we're out of space
iterateDepth :: Node.List
-> Instance.List
-> Instance.Instance
-> Int
-> [Instance.Instance]
- -> (Node.List, [Instance.Instance])
+ -> ([(FailMode, Int)], Node.List, [Instance.Instance])
iterateDepth nl il newinst nreq ixes =
let depth = length ixes
- newname = printf "new-%d" depth
- newidx = (length $ Container.elems il) + depth
+ newname = printf "new-%d" depth::String
+ newidx = length (Container.elems il) + depth
newi2 = Instance.setIdx (Instance.setName newinst newname) newidx
- sols = Cluster.tryAlloc nl il newi2 nreq
- orig = (nl, ixes)
- in
- if isNothing sols then orig
- else let sols' = fromJust sols
- sols'' = filterFails sols'
- in if isNothing sols'' then orig
- else let (xnl, xi, _) = fromJust $ processResults $
- fromJust sols''
- in iterateDepth xnl il newinst nreq (xi:ixes)
+ sols = Cluster.tryAlloc nl il newi2 nreq::
+ OpResult Cluster.AllocSolution
+ in case sols of
+ OpFail _ -> ([], nl, ixes)
+ OpGood sols' ->
+ let (errs, sols3) = filterFails sols'
+ in if null sols3
+ then (errs, nl, ixes)
+ else let (xnl, xi, _) = processResults sols3
+ in iterateDepth xnl il newinst nreq (xi:ixes)
+
+-- | Function to print stats for a given phase
+printStats :: String -> Cluster.CStats -> IO ()
+printStats kind cs = do
+ printf "%s free RAM: %d\n" kind (Cluster.cs_fmem cs)
+ printf "%s allocatable RAM: %d\n" kind (Cluster.cs_amem cs)
+ printf "%s reserved RAM: %d\n" kind (Cluster.cs_fmem cs -
+ Cluster.cs_amem cs)
+ printf "%s free disk: %d\n" kind (Cluster.cs_fdsk cs)
+ printf "%s allocatable disk: %d\n" kind (Cluster.cs_adsk cs)
+ printf "%s reserved disk: %d\n" kind (Cluster.cs_fdsk cs -
+ Cluster.cs_adsk cs)
+ printf "%s max node allocatable RAM: %d\n" kind (Cluster.cs_mmem cs)
+ printf "%s max node allocatable disk: %d\n" kind (Cluster.cs_mdsk cs)
+
+-- | Print final stats and related metrics
+printResults :: Node.List -> Int -> Int -> [(FailMode, Int)] -> IO ()
+printResults fin_nl num_instances allocs sreason = do
+ let fin_stats = Cluster.totalResources fin_nl
+ fin_instances = num_instances + allocs
+ printf "Final score: %.8f\n" (Cluster.compCV fin_nl)
+ printf "Final instances: %d\n" (num_instances + allocs)
+ printStats "Final" fin_stats
+ printf "Usage: %.5f\n" ((fromIntegral num_instances::Double) /
+ fromIntegral fin_instances)
+ printf "Allocations: %d\n" allocs
+ putStr (unlines . map (\(x, y) -> printf "%s: %d" (show x) y) $ sreason)
+ printf "Most likely fail reason: %s\n" (show . fst . head $ sreason)
-- | Main function.
main :: IO ()
hPutStrLn stderr "Error: this program doesn't take any arguments."
exitWith $ ExitFailure 1
+ printf "Spec RAM: %d\n" (optIMem opts)
+ printf "Spec disk: %d\n" (optIDsk opts)
+ printf "Spec CPUs: %d\n" (optIVCPUs opts)
+ printf "Spec nodes: %d\n" (optINodes opts)
+
let verbose = optVerbose opts
(fixed_nl, il, csf) <- CLI.loadExternalData opts
let offline_names = optOffline opts
all_nodes = Container.elems fixed_nl
all_names = map Node.name all_nodes
- offline_wrong = filter (\n -> not $ elem n all_names) offline_names
+ offline_wrong = filter (flip notElem all_names) offline_names
offline_indices = map Node.idx $
filter (\n -> elem (Node.name n) offline_names)
all_nodes
req_nodes = optINodes opts
+ m_cpu = optMcpu opts
+ m_dsk = optMdsk opts
when (length offline_wrong > 0) $ do
printf "Error: Wrong node name(s) set as offline: %s\n"
printf "Error: Invalid required nodes (%d)\n" req_nodes
exitWith $ ExitFailure 1
- let nl = Container.map (\n -> if elem (Node.idx n) offline_indices
+ let nm = Container.map (\n -> if elem (Node.idx n) offline_indices
then Node.setOffline n True
else n) fixed_nl
+ nl = Container.map (flip Node.setMdsk m_dsk . flip Node.setMcpu m_cpu)
+ nm
- when (length csf > 0 && verbose > 1) $ do
- printf "Note: Stripping common suffix of '%s' from names\n" csf
-
- let bad_nodes = fst $ Cluster.computeBadItems nl il
- when (length bad_nodes > 0) $ do
- putStrLn "Error: Cluster not N+1, no space to allocate."
- exitWith $ ExitFailure 1
+ when (length csf > 0 && verbose > 1) $
+ printf "Note: Stripping common suffix of '%s' from names\n" csf
when (optShowNodes opts) $
do
putStrLn $ Cluster.printNodes nl
let ini_cv = Cluster.compCV nl
- (orig_mem, orig_disk) = Cluster.totalResources nl
+ ini_stats = Cluster.totalResources nl
(if verbose > 2 then
printf "Initial coefficients: overall %.8f, %s\n"
else
printf "Initial score: %.8f\n" ini_cv)
printf "Initial instances: %d\n" num_instances
- printf "Initial free RAM: %d\n" orig_mem
- printf "Initial free disk: %d\n" orig_disk
+ printStats "Initial" ini_stats
+
+ let bad_nodes = fst $ Cluster.computeBadItems nl il
+ when (length bad_nodes > 0) $ do
+ -- This is failn1 case, so we print the same final stats and
+ -- exit early
+ printResults nl num_instances 0 [(FailN1, 1)]
+ exitWith ExitSuccess
let nmlen = Container.maxNameLen nl
newinst = Instance.create "new" (optIMem opts) (optIDsk opts)
(optIVCPUs opts) "ADMIN_down" (-1) (-1)
- let (fin_nl, ixes) = iterateDepth nl il newinst req_nodes []
+ let (ereason, fin_nl, ixes) = iterateDepth nl il newinst req_nodes []
allocs = length ixes
- fin_instances = num_instances + allocs
fin_ixes = reverse ixes
ix_namelen = maximum . map (length . Instance.name) $ fin_ixes
- (final_mem, final_disk) = Cluster.totalResources fin_nl
+ sreason = reverse $ sortBy (compare `on` snd) ereason
- printf "Final score: %.8f\n" (Cluster.compCV fin_nl)
- printf "Final instances: %d\n" (num_instances + allocs)
- printf "Final free RAM: %d\n" final_mem
- printf "Final free disk: %d\n" final_disk
- printf "Usage: %.5f\n" (((fromIntegral num_instances)::Double) /
- (fromIntegral fin_instances))
- printf "Allocations: %d\n" allocs
- when (verbose > 1) $ do
+ printResults fin_nl num_instances allocs sreason
+
+ when (verbose > 1) $
putStr . unlines . map (\i -> printf "Inst: %*s %-*s %-*s"
ix_namelen (Instance.name i)
nmlen (Container.nameOf fin_nl $ Instance.pnode i)
when (optShowNodes opts) $
do
- let (orig_mem, orig_disk) = Cluster.totalResources nl
- (final_mem, final_disk) = Cluster.totalResources fin_nl
putStrLn ""
putStrLn "Final cluster status:"
putStrLn $ Cluster.printNodes fin_nl
- when (verbose > 3) $
- do
- printf "Original: mem=%d disk=%d\n" orig_mem orig_disk
- printf "Final: mem=%d disk=%d\n" final_mem final_disk
projects / ganeti-local / blobdiff