Revision ed41c179 hail.hs
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import qualified Ganeti.HTools.Container as Container |
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import qualified Ganeti.HTools.Cluster as Cluster |
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import qualified Ganeti.HTools.Node as Node |
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import qualified Ganeti.HTools.Instance as Instance |
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import qualified Ganeti.HTools.CLI as CLI |
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import Ganeti.HTools.IAlloc |
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import Ganeti.HTools.Utils |
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"show help" |
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] |
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-- | Formats the solution for the oneline display |
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formatOneline :: Double -> Int -> Double -> String |
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formatOneline ini_cv plc_len fin_cv = |
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printf "%.8f %d %.8f %8.3f" ini_cv plc_len fin_cv |
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(if fin_cv == 0 then 1 else (ini_cv / fin_cv)) |
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-- | Try to allocate an instance on the cluster |
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tryAlloc :: NodeList |
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-> InstanceList |
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-> Instance.Instance |
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-> Int |
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-> Result [Node.Node] |
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tryAlloc nl il xi _ = Bad "alloc not implemented" |
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-- | Try to allocate an instance on the cluster |
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tryReloc :: NodeList |
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-> InstanceList |
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-> Int |
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-> Int |
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-> [Int] |
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-> Result [Node.Node] |
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tryReloc nl il xid reqn ex_idx = |
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let all_nodes = Container.elems nl |
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valid_nodes = filter (not . flip elem ex_idx . idx) all_nodes |
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in Ok (take reqn valid_nodes) |
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-- | Main function. |
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main :: IO () |
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exitWith $ ExitFailure 1 |
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Ok rq -> return rq |
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putStrLn $ show request |
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exitWith ExitSuccess |
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{- |
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(loaded_nl, il, csf, ktn, kti) <- liftM2 Cluster.loadData node_data inst_data |
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let (fix_msgs, fixed_nl) = Cluster.checkData loaded_nl il ktn kti |
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unless (null fix_msgs || verbose == 0) $ do |
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putStrLn "Warning: cluster has inconsistent data:" |
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putStrLn . unlines . map (\s -> printf " - %s" s) $ fix_msgs |
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let offline_names = optOffline opts |
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all_names = snd . unzip $ ktn |
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offline_wrong = filter (\n -> not $ elem n all_names) offline_names |
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offline_indices = fst . unzip . |
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filter (\(_, n) -> elem n offline_names) $ ktn |
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when (length offline_wrong > 0) $ do |
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printf "Wrong node name(s) set as offline: %s\n" |
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(commaJoin offline_wrong) |
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exitWith $ ExitFailure 1 |
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let nl = Container.map (\n -> if elem (Node.idx n) offline_indices |
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then Node.setOffline n True |
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else n) fixed_nl |
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when (Container.size il == 0) $ do |
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(if oneline then |
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putStrLn $ formatOneline 0 0 0 |
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else |
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printf "Cluster is empty, exiting.\n") |
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exitWith ExitSuccess |
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unless oneline $ printf "Loaded %d nodes, %d instances\n" |
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(Container.size nl) |
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(Container.size il) |
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when (length csf > 0 && not oneline && verbose > 1) $ do |
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printf "Note: Stripping common suffix of '%s' from names\n" csf |
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let (bad_nodes, bad_instances) = Cluster.computeBadItems nl il |
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unless (oneline || verbose == 0) $ printf |
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"Initial check done: %d bad nodes, %d bad instances.\n" |
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(length bad_nodes) (length bad_instances) |
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when (length bad_nodes > 0) $ do |
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putStrLn "Cluster is not N+1 happy, continuing but no guarantee \ |
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\that the cluster will end N+1 happy." |
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when (optShowNodes opts) $ |
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do |
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putStrLn "Initial cluster status:" |
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putStrLn $ Cluster.printNodes ktn nl |
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let ini_cv = Cluster.compCV nl |
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ini_tbl = Cluster.Table nl il ini_cv [] |
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min_cv = optMinScore opts |
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when (ini_cv < min_cv) $ do |
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(if oneline then |
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putStrLn $ formatOneline ini_cv 0 ini_cv |
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else printf "Cluster is already well balanced (initial score %.6g,\n\ |
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\minimum score %.6g).\nNothing to do, exiting\n" |
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ini_cv min_cv) |
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exitWith ExitSuccess |
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unless oneline (if verbose > 2 then |
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printf "Initial coefficients: overall %.8f, %s\n" |
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ini_cv (Cluster.printStats nl) |
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else |
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printf "Initial score: %.8f\n" ini_cv) |
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unless oneline $ putStrLn "Trying to minimize the CV..." |
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let mlen_fn = maximum . (map length) . snd . unzip |
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imlen = mlen_fn kti |
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nmlen = mlen_fn ktn |
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(fin_tbl, cmd_strs) <- iterateDepth ini_tbl (optMaxLength opts) |
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ktn kti nmlen imlen [] oneline min_cv |
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let (Cluster.Table fin_nl _ fin_cv fin_plc) = fin_tbl |
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ord_plc = reverse fin_plc |
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sol_msg = if null fin_plc |
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then printf "No solution found\n" |
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else (if verbose > 2 |
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then printf "Final coefficients: overall %.8f, %s\n" |
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fin_cv (Cluster.printStats fin_nl) |
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else printf "Cluster score improved from %.8f to %.8f\n" |
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ini_cv fin_cv |
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) |
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unless oneline $ putStr sol_msg |
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unless (oneline || verbose == 0) $ |
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printf "Solution length=%d\n" (length ord_plc) |
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let cmd_data = Cluster.formatCmds . reverse $ cmd_strs |
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when (isJust $ optShowCmds opts) $ |
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do |
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let out_path = fromJust $ optShowCmds opts |
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putStrLn "" |
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(if out_path == "-" then |
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printf "Commands to run to reach the above solution:\n%s" |
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(unlines . map (" " ++) . |
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filter (/= "check") . |
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lines $ cmd_data) |
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else do |
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writeFile out_path (CLI.shTemplate ++ cmd_data) |
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printf "The commands have been written to file '%s'\n" out_path) |
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when (optShowNodes opts) $ |
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do |
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let (orig_mem, orig_disk) = Cluster.totalResources nl |
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(final_mem, final_disk) = Cluster.totalResources fin_nl |
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putStrLn "" |
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putStrLn "Final cluster status:" |
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putStrLn $ Cluster.printNodes ktn fin_nl |
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when (verbose > 3) $ |
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do |
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printf "Original: mem=%d disk=%d\n" orig_mem orig_disk |
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printf "Final: mem=%d disk=%d\n" final_mem final_disk |
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when oneline $ |
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putStrLn $ formatOneline ini_cv (length ord_plc) fin_cv |
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-} |
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let Request rqtype nl il csf = request |
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new_nodes = case rqtype of |
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Allocate xi reqn -> tryAlloc nl il xi reqn |
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Relocate idx reqn exnodes -> |
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tryReloc nl il idx reqn exnodes |
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let (ok, info, rn) = case new_nodes of |
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Ok sn -> (True, "Request successfull", map name sn) |
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Bad s -> (False, "Request failed: " ++ s, []) |
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resp = formatResponse ok info rn |
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putStrLn resp |
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