ganeti-htools Source code Contents Index

Ganeti.HTools.Program.Hcheck

Description

Cluster checker.

Synopsis

options :: [OptType] data Phase = Initial | Rebalanced data Level = GroupLvl | ClusterLvl type GroupInfo = (Gdx, (List, List)) type GroupStats = ((Group, Double), [Int]) htcPrefix :: String commonData :: [(String, String)] groupData :: [(String, String)] clusterData :: [(String, String)] phasePrefix :: Phase -> String levelPrefix :: Level -> String keysData :: Level -> [String] phaseDescr :: Phase -> String descrData :: Level -> [String] phaseLevelDescr :: Phase -> Level -> Maybe String -> String printKeysHTC :: [(String, String)] -> IO () printBool :: Bool -> Bool -> String printGroupsMappings :: List -> IO () prepareKey :: Level -> Phase -> Maybe String -> String -> String printStats :: Int -> Bool -> Level -> Phase -> [String] -> Maybe String -> IO () extractGroupData :: Bool -> Group -> String prepareGroupValues :: [Int] -> Double -> [String] prepareClusterValues :: Bool -> [Int] -> [Bool] -> [String] printGroupStats :: Int -> Bool -> Phase -> GroupStats -> IO () printClusterStats :: Int -> Bool -> Phase -> [Int] -> Bool -> IO () clusterNeedsRebalance :: [Int] -> Bool perGroupChecks :: List -> GroupInfo -> GroupStats executeSimulation :: Options -> Table -> Double -> Gdx -> List -> List -> IO GroupInfo maybeSimulateGroupRebalance :: Options -> GroupInfo -> IO GroupInfo maybeSimulateRebalance :: Bool -> Options -> [GroupInfo] -> IO [GroupInfo] printFinalHTC :: Bool -> IO () main :: Options -> [String] -> IO ()

Documentation

options :: [OptType] Source

Options list and functions.

data Phase Source

Check phase - are we before (initial) or after rebalance. Constructors Initial Rebalanced

data Level Source

Level of presented statistics. Constructors GroupLvl ClusterLvl

type GroupInfo = (Gdx, (List, List)) Source

A type alias for a group index and node/instance lists.

type GroupStats = ((Group, Double), [Int]) Source

A type alias for group stats.

htcPrefix :: String Source

Prefix for machine readable names.

commonData :: [(String, String)] Source

Data showed both per group and per cluster.

groupData :: [(String, String)] Source

Data showed per group.

clusterData :: [(String, String)] Source

Data showed per cluster.

phasePrefix :: Phase -> String Source

Phase-specific prefix for machine readable version.

levelPrefix :: Level -> String Source

Level-specific prefix for machine readable version.

keysData :: Level -> [String] Source

Machine-readable keys to show depending on given level.

phaseDescr :: Phase -> String Source

Description of phases for human readable version.

descrData :: Level -> [String] Source

Description to show depending on given level.

phaseLevelDescr :: Phase -> Level -> Maybe String -> String Source

Human readable prefix for statistics.

printKeysHTC :: [(String, String)] -> IO () Source

Format a list of key, value as a shell fragment.

printBool Source

:: Bool Whether the result should be machine readable -> Bool Value to be converted to string -> String Prepare string from boolean value.

printGroupsMappings :: List -> IO () Source

Print mapping from group idx to group uuid (only in machine readable mode).

prepareKey :: Level -> Phase -> Maybe String -> String -> String Source

Prepare a single key given a certain level and phase of simulation.

printStats Source

:: Int Verbosity level -> Bool If the output should be machine readable -> Level Level on which we are printing -> Phase Current phase of simulation -> [String] Values to print -> Maybe String Additional data for groups -> IO () Print all the statistics for given level and phase.

extractGroupData :: Bool -> Group -> String Source

Extract name or idx from group.

prepareGroupValues :: [Int] -> Double -> [String] Source

Prepare values for group.

prepareClusterValues :: Bool -> [Int] -> [Bool] -> [String] Source

Prepare values for cluster.

printGroupStats :: Int -> Bool -> Phase -> GroupStats -> IO () Source

Print all the statistics on a group level.

printClusterStats :: Int -> Bool -> Phase -> [Int] -> Bool -> IO () Source

Print all the statistics on a cluster (global) level.

clusterNeedsRebalance :: [Int] -> Bool Source

Check if any of cluster metrics is non-zero.

perGroupChecks :: List -> GroupInfo -> GroupStats Source

Check group for N+1 hapiness, conflicts of primaries on nodes and instances residing on offline nodes.

executeSimulation :: Options -> Table -> Double -> Gdx -> List -> List -> IO GroupInfo Source

Use Hbal's iterateDepth to simulate group rebalance.

maybeSimulateGroupRebalance :: Options -> GroupInfo -> IO GroupInfo Source

Simulate group rebalance if group's score is not good

maybeSimulateRebalance Source

:: Bool Whether to simulate rebalance -> Options Command line options -> [GroupInfo] Group data -> IO [GroupInfo] Decide whether to simulate rebalance.

printFinalHTC :: Bool -> IO () Source

Prints the final OK marker in machine readable output.

main :: Options -> [String] -> IO () Source

Main function.

Produced by Haddock version 2.6.0