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agent: configurable MaxQueryTime and DefaultQueryTime. (#3777)

This commit is contained in:
Matej Urbas 2020-01-17 13:20:57 +00:00 committed by Hans Hasselberg
parent 5f5085aa75
commit d877e091d6
12 changed files with 69 additions and 17 deletions
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2
agent/agent.go
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@ -1263,6 +1263,8 @@ func (a *Agent) consulConfig() (*consul.Config, error) {
base.TLSMinVersion = a.config.TLSMinVersion
base.TLSCipherSuites = a.config.TLSCipherSuites
base.TLSPreferServerCipherSuites = a.config.TLSPreferServerCipherSuites
base.DefaultQueryTime = a.config.DefaultQueryTime
base.MaxQueryTime = a.config.MaxQueryTime
base.AutoEncryptAllowTLS = a.config.AutoEncryptAllowTLS

2
agent/config/builder.go
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@ -819,6 +819,7 @@ func (b *Builder) Build() (rt RuntimeConfig, err error) {
ExposeMaxPort: exposeMaxPort,
DataDir: b.stringVal(c.DataDir),
Datacenter: datacenter,
DefaultQueryTime: b.durationVal("default_query_time", c.DefaultQueryTime),
DevMode: b.boolVal(b.Flags.DevMode),
DisableAnonymousSignature: b.boolVal(c.DisableAnonymousSignature),
DisableCoordinates: b.boolVal(c.DisableCoordinates),
@ -850,6 +851,7 @@ func (b *Builder) Build() (rt RuntimeConfig, err error) {
LogRotateBytes: b.intVal(c.LogRotateBytes),
LogRotateDuration: b.durationVal("log_rotate_duration", c.LogRotateDuration),
LogRotateMaxFiles: b.intVal(c.LogRotateMaxFiles),
MaxQueryTime: b.durationVal("max_query_time", c.MaxQueryTime),
NodeID: types.NodeID(b.stringVal(c.NodeID)),
NodeMeta: c.NodeMeta,
NodeName: b.nodeName(c.NodeName),

2
agent/config/config.go
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@ -204,6 +204,7 @@ type Config struct {
DNSRecursors []string `json:"recursors,omitempty" hcl:"recursors" mapstructure:"recursors"`
DataDir *string `json:"data_dir,omitempty" hcl:"data_dir" mapstructure:"data_dir"`
Datacenter *string `json:"datacenter,omitempty" hcl:"datacenter" mapstructure:"datacenter"`
DefaultQueryTime *string `json:"default_query_time,omitempty" hcl:"default_query_time" mapstructure:"default_query_time"`
DisableAnonymousSignature *bool `json:"disable_anonymous_signature,omitempty" hcl:"disable_anonymous_signature" mapstructure:"disable_anonymous_signature"`
DisableCoordinates *bool `json:"disable_coordinates,omitempty" hcl:"disable_coordinates" mapstructure:"disable_coordinates"`
DisableHostNodeID *bool `json:"disable_host_node_id,omitempty" hcl:"disable_host_node_id" mapstructure:"disable_host_node_id"`
@ -234,6 +235,7 @@ type Config struct {
LogRotateDuration *string `json:"log_rotate_duration,omitempty" hcl:"log_rotate_duration" mapstructure:"log_rotate_duration"`
LogRotateBytes *int `json:"log_rotate_bytes,omitempty" hcl:"log_rotate_bytes" mapstructure:"log_rotate_bytes"`
LogRotateMaxFiles *int `json:"log_rotate_max_files,omitempty" hcl:"log_rotate_max_files" mapstructure:"log_rotate_max_files"`
MaxQueryTime *string `json:"max_query_time,omitempty" hcl:"max_query_time" mapstructure:"max_query_time"`
NodeID *string `json:"node_id,omitempty" hcl:"node_id" mapstructure:"node_id"`
NodeMeta map[string]string `json:"node_meta,omitempty" hcl:"node_meta" mapstructure:"node_meta"`
NodeName *string `json:"node_name,omitempty" hcl:"node_name" mapstructure:"node_name"`

2
agent/config/default.go
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@ -55,6 +55,7 @@ func DefaultSource() Source {
check_update_interval = "5m"
client_addr = "127.0.0.1"
datacenter = "` + consul.DefaultDC + `"
default_query_time = "300s"
disable_coordinates = false
disable_host_node_id = true
disable_remote_exec = true
@ -62,6 +63,7 @@ func DefaultSource() Source {
encrypt_verify_incoming = true
encrypt_verify_outgoing = true
log_level = "INFO"
max_query_time = "600s"
protocol = 2
retry_interval = "30s"
retry_interval_wan = "30s"

2
agent/config/flags.go
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@ -66,6 +66,7 @@ func AddFlags(fs *flag.FlagSet, f *Flags) {
add(&f.ConfigFormat, "config-format", "Config files are in this format irrespective of their extension. Must be 'hcl' or 'json'")
add(&f.Config.DataDir, "data-dir", "Path to a data directory to store agent state.")
add(&f.Config.Datacenter, "datacenter", "Datacenter of the agent.")
add(&f.Config.DefaultQueryTime, "default-query-time", "the amount of time a blocking query will wait before Consul will force a response. This value can be overridden by the 'wait' query parameter.")
add(&f.DevMode, "dev", "Starts the agent in development mode.")
add(&f.Config.DisableHostNodeID, "disable-host-node-id", "Setting this to true will prevent Consul from using information from the host to generate a node ID, and will cause Consul to generate a random node ID instead.")
add(&f.Config.DisableKeyringFile, "disable-keyring-file", "Disables the backing up of the keyring to a file.")
@ -85,6 +86,7 @@ func AddFlags(fs *flag.FlagSet, f *Flags) {
add(&f.Config.LogRotateBytes, "log-rotate-bytes", "Maximum number of bytes that should be written to a log file")
add(&f.Config.LogRotateDuration, "log-rotate-duration", "Time after which log rotation needs to be performed")
add(&f.Config.LogRotateMaxFiles, "log-rotate-max-files", "Maximum number of log file archives to keep")
add(&f.Config.MaxQueryTime, "max-query-time", "the maximum amount of time a blocking query can wait before Consul will force a response. Consul applies jitter to the wait time. The jittered time will be capped to MaxQueryTime.")
add(&f.Config.NodeName, "node", "Name of this node. Must be unique in the cluster.")
add(&f.Config.NodeID, "node-id", "A unique ID for this node across space and time. Defaults to a randomly-generated ID that persists in the data-dir.")
add(&f.Config.NodeMeta, "node-meta", "An arbitrary metadata key/value pair for this node, of the format `key:value`. Can be specified multiple times.")

16
agent/config/runtime.go
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@ -600,6 +600,14 @@ type RuntimeConfig struct {
// flag: -data-dir string
DataDir string
// DefaultQueryTime is the amount of time a blocking query will wait before
// Consul will force a response. This value can be overridden by the 'wait'
// query parameter.
//
// hcl: default_query_time = "duration"
// flag: -default-query-time string
DefaultQueryTime time.Duration
// DevMode enables a fast-path mode of operation to bring up an in-memory
// server with minimal configuration. Useful for developing Consul.
//
@ -846,6 +854,14 @@ type RuntimeConfig struct {
// flags: -log-rotate-max-files int
LogRotateMaxFiles int
// MaxQueryTime is the maximum amount of time a blocking query can wait
// before Consul will force a response. Consul applies jitter to the wait
// time. The jittered time will be capped to MaxQueryTime.
//
// hcl: max_query_time = "duration"
// flags: -max-query-time string
MaxQueryTime time.Duration
// Node ID is a unique ID for this node across space and time. Defaults
// to a randomly-generated ID that persists in the data-dir.
//

8
agent/config/runtime_test.go
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@ -3757,6 +3757,7 @@ func TestFullConfig(t *testing.T) {
},
"data_dir": "` + dataDir + `",
"datacenter": "rzo029wg",
"default_query_time": "16743s",
"disable_anonymous_signature": true,
"disable_coordinates": true,
"disable_host_node_id": true,
@ -3810,6 +3811,7 @@ func TestFullConfig(t *testing.T) {
"kv_max_value_size": 1234567800000000
},
"log_level": "k1zo9Spt",
"max_query_time": "18237s",
"node_id": "AsUIlw99",
"node_meta": {
"5mgGQMBk": "mJLtVMSG",
@ -4356,6 +4358,7 @@ func TestFullConfig(t *testing.T) {
}
data_dir = "` + dataDir + `"
datacenter = "rzo029wg"
default_query_time = "16743s"
disable_anonymous_signature = true
disable_coordinates = true
disable_host_node_id = true
@ -4410,6 +4413,7 @@ func TestFullConfig(t *testing.T) {
kv_max_value_size = 1234567800000000
}
log_level = "k1zo9Spt"
max_query_time = "18237s"
node_id = "AsUIlw99"
node_meta {
"5mgGQMBk" = "mJLtVMSG"
@ -5064,6 +5068,7 @@ func TestFullConfig(t *testing.T) {
DNSCacheMaxAge: 5 * time.Minute,
DataDir: dataDir,
Datacenter: "rzo029wg",
DefaultQueryTime: 16743 * time.Second,
DevMode: true,
DisableAnonymousSignature: true,
DisableCoordinates: true,
@ -5098,6 +5103,7 @@ func TestFullConfig(t *testing.T) {
LeaveDrainTime: 8265 * time.Second,
LeaveOnTerm: true,
LogLevel: "k1zo9Spt",
MaxQueryTime: 18237 * time.Second,
NodeID: types.NodeID("AsUIlw99"),
NodeMeta: map[string]string{"5mgGQMBk": "mJLtVMSG", "A7ynFMJB": "0Nx6RGab"},
NodeName: "otlLxGaI",
@ -5924,6 +5930,7 @@ func TestSanitize(t *testing.T) {
"DNSCacheMaxAge": "0s",
"DataDir": "",
"Datacenter": "",
"DefaultQueryTime": "0s",
"DevMode": false,
"DisableAnonymousSignature": false,
"DisableCoordinates": false,
@ -5967,6 +5974,7 @@ func TestSanitize(t *testing.T) {
"LogRotateBytes": 0,
"LogRotateDuration": "0s",
"LogRotateMaxFiles": 0,
"MaxQueryTime": "0s",
"NodeID": "",
"NodeMeta": {},
"NodeName": "",

12
agent/consul/config.go
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@ -86,6 +86,16 @@ type Config struct {
// DataDir is the directory to store our state in.
DataDir string
// DefaultQueryTime is the amount of time a blocking query will wait before
// Consul will force a response. This value can be overridden by the 'wait'
// query parameter.
DefaultQueryTime time.Duration
// MaxQueryTime is the maximum amount of time a blocking query can wait
// before Consul will force a response. Consul applies jitter to the wait
// time. The jittered time will be capped to MaxQueryTime.
MaxQueryTime time.Duration
// DevMode is used to enable a development server mode.
DevMode bool
@ -546,6 +556,8 @@ func DefaultConfig() *Config {
ServerHealthInterval: 2 * time.Second,
AutopilotInterval: 10 * time.Second,
DefaultQueryTime: 300 * time.Second,
MaxQueryTime: 600 * time.Second,
EnterpriseConfig: DefaultEnterpriseConfig(),
}

7
agent/consul/leader_connect.go
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@ -34,10 +34,6 @@ var (
// maxRetryBackoff is the maximum number of seconds to wait between failed blocking
// queries when backing off.
maxRetryBackoff = 256
// maxRootsQueryTime is the maximum time the primary roots watch query can block before
// returning.
maxRootsQueryTime = maxQueryTime
)
// initializeCAConfig is used to initialize the CA config if necessary
@ -602,7 +598,8 @@ func (s *Server) secondaryCARootWatch(ctx context.Context) error {
args := structs.DCSpecificRequest{
Datacenter: s.config.PrimaryDatacenter,
QueryOptions: structs.QueryOptions{
MaxQueryTime: maxRootsQueryTime,
// the maximum time the primary roots watch query can block before returning
MaxQueryTime: s.config.MaxQueryTime,
},
}

4
agent/consul/leader_connect_test.go
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@ -514,12 +514,11 @@ func TestLeader_SecondaryCA_TransitionFromPrimary(t *testing.T) {
func TestLeader_SecondaryCA_UpgradeBeforePrimary(t *testing.T) {
t.Parallel()
maxRootsQueryTime = 500 * time.Millisecond
// Initialize dc1 as the primary DC
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.PrimaryDatacenter = "dc1"
c.Build = "1.3.0"
c.MaxQueryTime = 500 * time.Millisecond
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
@ -531,6 +530,7 @@ func TestLeader_SecondaryCA_UpgradeBeforePrimary(t *testing.T) {
c.Datacenter = "dc2"
c.PrimaryDatacenter = "dc1"
c.Build = "1.6.0"
c.MaxQueryTime = 500 * time.Millisecond
})
defer os.RemoveAll(dir2)
defer s2.Shutdown()

13
agent/consul/rpc.go
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@ -24,13 +24,6 @@ import (
)
const (
// maxQueryTime is used to bound the limit of a blocking query
maxQueryTime = 600 * time.Second
// defaultQueryTime is the amount of time we block waiting for a change
// if no time is specified. Previously we would wait the maxQueryTime.
defaultQueryTime = 300 * time.Second
// jitterFraction is a the limit to the amount of jitter we apply
// to a user specified MaxQueryTime. We divide the specified time by
// the fraction. So 16 == 6.25% limit of jitter. This same fraction
@ -466,10 +459,10 @@ func (s *Server) blockingQuery(queryOpts structs.QueryOptionsCompat, queryMeta s
queryTimeout = queryOpts.GetMaxQueryTime()
// Restrict the max query time, and ensure there is always one.
if queryTimeout > maxQueryTime {
queryTimeout = maxQueryTime
if queryTimeout > s.config.MaxQueryTime {
queryTimeout = s.config.MaxQueryTime
} else if queryTimeout <= 0 {
queryTimeout = defaultQueryTime
queryTimeout = s.config.DefaultQueryTime
}
// Apply a small amount of jitter to the request.

16
website/source/docs/agent/options.html.md
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@ -285,6 +285,16 @@ The options below are all specified on the command-line.
* <a name="_log_rotate_max_files"></a><a href="#_log_rotate_max_files">`-log-rotate-max-files`</a> - to specify the maximum number of older log file archives to keep. Defaults to 0 (no files are ever deleted). Set to -1 to discard old log files when a new one is created.
* <a name="_default_query_time"></a><a href="#_default_query_time">`-default-query-time`</a> - This flag controls the
amount of time a blocking query will wait before Consul will force a response.
This value can be overridden by the `wait` query parameter. Note that Consul
applies some jitter on top of this time. Defaults to 300s.
* <a name="_max_query_time"></a><a href="#_max_query_time">`-max-query-time`</a> -
this flag controls the maximum amount of time a blocking query can wait before
Consul will force a response. Consul applies jitter to the wait time. The jittered
time will be capped to this time. Defaults to 600s.
* <a name="_join"></a><a href="#_join">`-join`</a> - Address of another agent
to join upon starting up. This can be
specified multiple times to specify multiple agents to join. If Consul is
@ -1374,6 +1384,12 @@ default will automatically work with some tooling.
* <a name="log_level"></a><a href="#log_level">`log_level`</a> Equivalent to the
[`-log-level` command-line flag](#_log_level).
* <a name="default_query_time"></a><a href="#default_query_time">`default_query_time`</a>
Equivalent to the [`-default-query-time` command-line flag](#_default_query_time).
* <a name="max_query_time"></a><a href="#max_query_time">`max_query_time`</a>
Equivalent to the [`-max-query-time` command-line flag](#_max_query_time).
* <a name="node_id"></a><a href="#node_id">`node_id`</a> Equivalent to the
[`-node-id` command-line flag](#_node_id).