func ReadClusterPoolInstances(clusterName string) (*PoolInstancesMap, error) {
var poolInstancesMap = make(PoolInstancesMap)
query := fmt.Sprintf(`
select
database_instance_pool.*
from
database_instance
join database_instance_pool using (hostname, port)
where
database_instance.cluster_name = '%s'
`, clusterName)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
pool := m.GetString("pool")
hostname := m.GetString("hostname")
port := m.GetInt("port")
if _, ok := poolInstancesMap[pool]; !ok {
poolInstancesMap[pool] = [](*InstanceKey){}
}
poolInstancesMap[pool] = append(poolInstancesMap[pool], &InstanceKey{Hostname: hostname, Port: port})
return nil
})
if err != nil {
return nil, err
}
return &poolInstancesMap, nil
}
// readRecoveries reads recovery entry/audit entires from topology_recovery
func ReadReplicationAnalysisChangelog() ([]ReplicationAnalysisChangelog, error) {
res := []ReplicationAnalysisChangelog{}
query := `
select
hostname,
port,
group_concat(analysis_timestamp,';',analysis order by changelog_id) as changelog
from
database_instance_analysis_changelog
group by
hostname, port
`
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
analysisChangelog := ReplicationAnalysisChangelog{}
analysisChangelog.AnalyzedInstanceKey.Hostname = m.GetString("hostname")
analysisChangelog.AnalyzedInstanceKey.Port = m.GetInt("port")
analysisChangelog.Changelog = m.GetString("changelog")
res = append(res, analysisChangelog)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// readAgentBasicInfo returns the basic data for an agent directly from backend table (no agent access)
func readAgentBasicInfo(hostname string) (Agent, string, error) {
agent := Agent{}
token := ""
query := fmt.Sprintf(`
select
hostname,
port,
token,
last_submitted,
mysql_port
from
host_agent
where
hostname = '%s'
`, hostname)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
agent.Hostname = m.GetString("hostname")
agent.Port = m.GetInt("port")
agent.LastSubmitted = m.GetString("last_submitted")
agent.MySQLPort = m.GetInt64("mysql_port")
token = m.GetString("token")
return nil
})
if err != nil {
return agent, "", err
}
if token == "" {
return agent, "", log.Errorf("Cannot get agent/token: %s", hostname)
}
return agent, token, nil
}
func getHostAttributesByClause(whereClause string) ([]HostAttributes, error) {
res := []HostAttributes{}
query := fmt.Sprintf(`
select
hostname,
attribute_name,
attribute_value,
submit_timestamp ,
ifnull(expire_timestamp, '') as expire_timestamp
from
host_attributes
%s
order by
hostname, attribute_name
`, whereClause)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
hostAttributes := HostAttributes{}
hostAttributes.Hostname = m.GetString("hostname")
hostAttributes.AttributeName = m.GetString("attribute_name")
hostAttributes.AttributeValue = m.GetString("attribute_value")
hostAttributes.SubmitTimestamp = m.GetString("submit_timestamp")
hostAttributes.ExpireTimestamp = m.GetString("expire_timestamp")
res = append(res, hostAttributes)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadAgents returns a list of all known agents
func ReadAgents() ([]Agent, error) {
res := []Agent{}
query := `
select
hostname,
port,
token,
last_submitted,
mysql_port
from
host_agent
order by
hostname
`
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
agent := Agent{}
agent.Hostname = m.GetString("hostname")
agent.Port = m.GetInt("port")
agent.MySQLPort = m.GetInt64("mysql_port")
agent.Token = ""
agent.LastSubmitted = m.GetString("last_submitted")
res = append(res, agent)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadMaintenanceInstanceKey will return the instanceKey for active maintenance by maintenanceToken
func ReadMaintenanceInstanceKey(maintenanceToken int64) (*InstanceKey, error) {
var res *InstanceKey
query := fmt.Sprintf(`
select
hostname, port
from
database_instance_maintenance
where
database_instance_maintenance_id = %d `,
maintenanceToken)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
instanceKey, merr := NewInstanceKeyFromStrings(m.GetString("hostname"), m.GetString("port"))
if merr != nil {
return merr
}
res = instanceKey
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// SeedOperationState reads states for a given seed operation
func ReadSeedStates(seedId int64) ([]SeedOperationState, error) {
res := []SeedOperationState{}
query := fmt.Sprintf(`
select
agent_seed_state_id,
agent_seed_id,
state_timestamp,
state_action,
error_message
from
agent_seed_state
where
agent_seed_id = %d
order by
agent_seed_state_id desc
`, seedId)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
seedState := SeedOperationState{}
seedState.SeedStateId = m.GetInt64("agent_seed_state_id")
seedState.SeedId = m.GetInt64("agent_seed_id")
seedState.StateTimestamp = m.GetString("state_timestamp")
seedState.Action = m.GetString("state_action")
seedState.ErrorMessage = m.GetString("error_message")
res = append(res, seedState)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
func ReadAllClusterPoolInstances() ([](*ClusterPoolInstance), error) {
var result [](*ClusterPoolInstance) = [](*ClusterPoolInstance){}
query := `
select
cluster_name,
ifnull(alias, cluster_name) as alias,
database_instance_pool.*
from
database_instance
join database_instance_pool using (hostname, port)
left join cluster_alias using (cluster_name)
`
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
clusterPoolInstance := ClusterPoolInstance{
ClusterName: m.GetString("cluster_name"),
ClusterAlias: m.GetString("alias"),
Pool: m.GetString("pool"),
Hostname: m.GetString("hostname"),
Port: m.GetInt("port"),
}
result = append(result, &clusterPoolInstance)
return nil
})
if err != nil {
return nil, err
}
return result, nil
}
// DeleteInvalidHostnameResolves removes invalid resolves. At this time these are:
// - infinite loop resolves (A->B and B->A), remove earlier mapping
func DeleteInvalidHostnameResolves() error {
var invalidHostnames []string
query := `
select
early.hostname
from
hostname_resolve as latest
join hostname_resolve early on (latest.resolved_hostname = early.hostname and latest.hostname = early.resolved_hostname)
where
latest.hostname != latest.resolved_hostname
and latest.resolved_timestamp > early.resolved_timestamp
`
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
invalidHostnames = append(invalidHostnames, m.GetString("hostname"))
return nil
})
if err != nil {
return err
}
for _, invalidHostname := range invalidHostnames {
_, err = db.ExecOrchestrator(`
delete
from hostname_resolve
where
hostname = ?`,
invalidHostname,
)
log.Errore(err)
}
return err
}
// ReadLongRunningProcesses returns the list of current known long running processes of all instances
func ReadLongRunningProcesses(filter string) ([]Process, error) {
longRunningProcesses := []Process{}
filterClause := ""
if filter != "" {
filterClause = fmt.Sprintf(`
where
hostname like '%%%s%%'
or process_user like '%%%s%%'
or process_host like '%%%s%%'
or process_db like '%%%s%%'
or process_command like '%%%s%%'
or process_state like '%%%s%%'
or process_info like '%%%s%%'
`, filter, filter, filter, filter, filter, filter, filter)
}
query := fmt.Sprintf(`
select
hostname,
port,
process_id,
process_started_at,
process_user,
process_host,
process_db,
process_command,
process_time_seconds,
process_state,
process_info
from
database_instance_long_running_queries
%s
order by
process_time_seconds desc
`, filterClause)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
process := Process{}
process.InstanceHostname = m.GetString("hostname")
process.InstancePort = m.GetInt("port")
process.Id = m.GetInt64("process_id")
process.User = m.GetString("process_user")
process.Host = m.GetString("process_host")
process.Db = m.GetString("process_db")
process.Command = m.GetString("process_command")
process.Time = m.GetInt64("process_time_seconds")
process.State = m.GetString("process_state")
process.Info = m.GetString("process_info")
process.StartedAt = m.GetString("process_started_at")
longRunningProcesses = append(longRunningProcesses, process)
return nil
})
if err != nil {
log.Errore(err)
}
return longRunningProcesses, err
}
func GetEquivalentMasterCoordinates(instanceCoordinates *InstanceBinlogCoordinates) (result [](*InstanceBinlogCoordinates), err error) {
query := fmt.Sprintf(`
select
master1_hostname as hostname,
master1_port as port,
master1_binary_log_file as binlog_file,
master1_binary_log_pos as binlog_pos
from
master_position_equivalence
where
master2_hostname = '%s'
and master2_port = '%d'
and master2_binary_log_file = '%s'
and master2_binary_log_pos = '%d'
union
select
master2_hostname as hostname,
master2_port as port,
master2_binary_log_file as binlog_file,
master2_binary_log_pos as binlog_pos
from
master_position_equivalence
where
master1_hostname = '%s'
and master1_port = '%d'
and master1_binary_log_file = '%s'
and master1_binary_log_pos = '%d'
`,
instanceCoordinates.Key.Hostname,
instanceCoordinates.Key.Port,
instanceCoordinates.Coordinates.LogFile,
instanceCoordinates.Coordinates.LogPos,
instanceCoordinates.Key.Hostname,
instanceCoordinates.Key.Port,
instanceCoordinates.Coordinates.LogFile,
instanceCoordinates.Coordinates.LogPos)
err = db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
equivalentCoordinates := InstanceBinlogCoordinates{}
equivalentCoordinates.Key.Hostname = m.GetString("hostname")
equivalentCoordinates.Key.Port = m.GetInt("port")
equivalentCoordinates.Coordinates.LogFile = m.GetString("binlog_file")
equivalentCoordinates.Coordinates.LogPos = m.GetInt64("binlog_pos")
result = append(result, &equivalentCoordinates)
return nil
})
if err != nil {
return nil, err
}
return result, nil
}
func ReadPendingAsyncRequests(limit int) (res [](*AsyncRequest), err error) {
limitClause := ""
if limit > 0 {
limitClause = fmt.Sprintf("limit %d", limit)
}
query := fmt.Sprintf(`
select
request_id,
command,
hostname,
port,
destination_hostname,
destination_port,
pattern,
gtid_hint,
story
from
async_request
where
begin_timestamp IS NULL
order by
request_id asc
%s
`, limitClause)
err = db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
asyncRequest := NewEmptyAsyncRequest()
asyncRequest.Id = m.GetInt64("request_id")
asyncRequest.Command = m.GetString("command")
asyncRequest.OperatedInstanceKey = &inst.InstanceKey{}
asyncRequest.OperatedInstanceKey.Hostname = m.GetString("hostname")
asyncRequest.OperatedInstanceKey.Port = m.GetInt("port")
if m.GetString("destination_hostname") != "" {
asyncRequest.DestinationKey = &inst.InstanceKey{}
asyncRequest.DestinationKey.Hostname = m.GetString("destination_hostname")
asyncRequest.DestinationKey.Port = m.GetInt("destination_port")
}
asyncRequest.Pattern = m.GetString("pattern")
asyncRequest.GTIDHint = inst.OperationGTIDHint(m.GetString("gtid_hint"))
asyncRequest.Story = m.GetString("story")
res = append(res, asyncRequest)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// readRecoveries reads recovery entry/audit entires from topology_recovery
func readFailureDetections(whereCondition string, limit string) ([]TopologyRecovery, error) {
res := []TopologyRecovery{}
query := fmt.Sprintf(`
select
detection_id,
hostname,
port,
in_active_period as is_active,
start_active_period,
end_active_period_unixtime,
processing_node_hostname,
processcing_node_token,
analysis,
cluster_name,
cluster_alias,
count_affected_slaves,
slave_hosts
from
topology_failure_detection
%s
order by
detection_id desc
%s
`, whereCondition, limit)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
failureDetection := TopologyRecovery{}
failureDetection.Id = m.GetInt64("detection_id")
failureDetection.IsActive = m.GetBool("is_active")
failureDetection.RecoveryStartTimestamp = m.GetString("start_active_period")
failureDetection.ProcessingNodeHostname = m.GetString("processing_node_hostname")
failureDetection.ProcessingNodeToken = m.GetString("processcing_node_token")
failureDetection.AnalysisEntry.AnalyzedInstanceKey.Hostname = m.GetString("hostname")
failureDetection.AnalysisEntry.AnalyzedInstanceKey.Port = m.GetInt("port")
failureDetection.AnalysisEntry.Analysis = inst.AnalysisCode(m.GetString("analysis"))
failureDetection.AnalysisEntry.ClusterDetails.ClusterName = m.GetString("cluster_name")
failureDetection.AnalysisEntry.ClusterDetails.ClusterAlias = m.GetString("cluster_alias")
failureDetection.AnalysisEntry.CountSlaves = m.GetUint("count_affected_slaves")
failureDetection.AnalysisEntry.ReadSlaveHostsFromString(m.GetString("slave_hosts"))
failureDetection.AnalysisEntry.ClusterDetails.ReadRecoveryInfo()
res = append(res, failureDetection)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadRecentAudit returns a list of audit entries order chronologically descending, using page number.
func ReadRecentAudit(instanceKey *InstanceKey, page int) ([]Audit, error) {
res := []Audit{}
var whereCondition string
if instanceKey != nil {
whereCondition = fmt.Sprintf(`where hostname='%s' and port='%d'`, instanceKey.Hostname, instanceKey.Port)
}
query := fmt.Sprintf(`
select
audit_id,
audit_timestamp,
audit_type,
hostname,
port,
message
from
audit
%s
order by
audit_timestamp desc
limit %d
offset %d
`, whereCondition, config.Config.AuditPageSize, page*config.Config.AuditPageSize)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
audit := Audit{}
audit.AuditId = m.GetInt64("audit_id")
audit.AuditTimestamp = m.GetString("audit_timestamp")
audit.AuditType = m.GetString("audit_type")
audit.AuditInstanceKey.Hostname = m.GetString("hostname")
audit.AuditInstanceKey.Port = m.GetInt("port")
audit.Message = m.GetString("message")
res = append(res, audit)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadActiveMaintenance returns the list of currently active maintenance entries
func ReadActiveMaintenance() ([]Maintenance, error) {
res := []Maintenance{}
query := fmt.Sprintf(`
select
database_instance_maintenance_id,
hostname,
port,
begin_timestamp,
timestampdiff(second, begin_timestamp, now()) as seconds_elapsed,
maintenance_active,
owner,
reason
from
database_instance_maintenance
where
maintenance_active = 1
order by
database_instance_maintenance_id
`)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
maintenance := Maintenance{}
maintenance.MaintenanceId = m.GetUint("database_instance_maintenance_id")
maintenance.Key.Hostname = m.GetString("hostname")
maintenance.Key.Port = m.GetInt("port")
maintenance.BeginTimestamp = m.GetString("begin_timestamp")
maintenance.SecondsElapsed = m.GetUint("seconds_elapsed")
maintenance.IsActive = m.GetBool("maintenance_active")
maintenance.Owner = m.GetString("owner")
maintenance.Reason = m.GetString("reason")
res = append(res, maintenance)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
func readAllHostnameResolves() ([]HostnameResolve, error) {
res := []HostnameResolve{}
query := `
select
hostname,
resolved_hostname
from
hostname_resolve
`
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
hostnameResolve := HostnameResolve{hostname: m.GetString("hostname"), resolvedHostname: m.GetString("resolved_hostname")}
res = append(res, hostnameResolve)
return nil
})
readAllResolvedHostnamesCounter.Inc(1)
if err != nil {
log.Errore(err)
}
return res, err
}
// ElectedNode returns the details of the elected node, as well as answering the question "is this process the elected one"?
func ElectedNode() (hostname string, token string, isElected bool, err error) {
query := `
select
hostname,
token
from
active_node
where
anchor = 1
`
err = db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
hostname = m.GetString("hostname")
token = m.GetString("token")
return nil
})
if err != nil {
log.Errore(err)
}
isElected = (hostname == ThisHostname && token == ProcessToken.Hash)
return hostname, token, isElected, err
}
func readAvailableNodes() ([]string, error) {
res := []string{}
query := fmt.Sprintf(`
select
concat(hostname, ';', token) as node
from
node_health
where
last_seen_active > now() - interval %d second
order by
hostname
`, registrationPollSeconds*2)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
res = append(res, m.GetString("node"))
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadOutdatedAgentsHosts returns agents that need to be updated
func ReadOutdatedAgentsHosts() ([]string, error) {
res := []string{}
query := fmt.Sprintf(`
select
hostname
from
host_agent
where
IFNULL(last_checked < now() - interval %d minute, true)
`,
config.Config.AgentPollMinutes)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
hostname := m.GetString("hostname")
res = append(res, hostname)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadClusterAliases reads the entrie cluster name aliases mapping
func ReadClusterAliases() error {
updatedMap := make(map[string]string)
query := `
select
cluster_name,
alias
from
cluster_alias
`
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
updatedMap[m.GetString("cluster_name")] = m.GetString("alias")
return nil
})
if err != nil {
log.Errore(err)
}
clusterAliasMapMutex.Lock()
defer clusterAliasMapMutex.Unlock()
clusterAliasMap = updatedMap
return err
}
// ReadBlockedRecoveries reads blocked recovery entries, potentially filtered by cluster name (empty to unfilter)
func ReadBlockedRecoveries(clusterName string) ([]BlockedTopologyRecovery, error) {
res := []BlockedTopologyRecovery{}
whereClause := ""
if clusterName != "" {
whereClause = fmt.Sprintf(`where cluster_name = '%s'`, clusterName)
}
query := fmt.Sprintf(`
select
hostname,
port,
cluster_name,
analysis,
last_blocked_timestamp,
blocking_recovery_id
from
blocked_topology_recovery
%s
order by
last_blocked_timestamp desc
`, whereClause)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
blockedTopologyRecovery := BlockedTopologyRecovery{}
blockedTopologyRecovery.FailedInstanceKey.Hostname = m.GetString("hostname")
blockedTopologyRecovery.FailedInstanceKey.Port = m.GetInt("port")
blockedTopologyRecovery.ClusterName = m.GetString("cluster_name")
blockedTopologyRecovery.Analysis = inst.AnalysisCode(m.GetString("analysis"))
blockedTopologyRecovery.LastBlockedTimestamp = m.GetString("last_blocked_timestamp")
blockedTopologyRecovery.BlockingRecoveryId = m.GetInt64("blocking_recovery_id")
res = append(res, blockedTopologyRecovery)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadResolvedHostname returns the resolved hostname given a hostname, or empty if not exists
func ReadResolvedHostname(hostname string) (string, error) {
var resolvedHostname string = ""
query := fmt.Sprintf(`
select
resolved_hostname
from
hostname_resolve
where
hostname = '%s'
`, hostname)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
resolvedHostname = m.GetString("resolved_hostname")
return nil
})
readResolvedHostnameCounter.Inc(1)
if err != nil {
log.Errore(err)
}
return resolvedHostname, err
}
// ReadClusterDomainName reads the domain name associated with a cluster, if any
func ReadClusterDomainName(clusterName string) (string, error) {
domainName := ""
query := fmt.Sprintf(`
select
domain_name
from
cluster_domain_name
where
cluster_name = '%s'
`, clusterName)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
domainName = m.GetString("domain_name")
return nil
})
if err != nil {
return "", err
}
if domainName == "" {
err = fmt.Errorf("No domain name found for cluster %s", clusterName)
}
return domainName, err
}
// ReadClusterAliases reads the entrie cluster name aliases mapping
func ReadClusterByAlias(alias string) (string, error) {
clusterName := ""
query := fmt.Sprintf(`
select
cluster_name
from
cluster_alias
where
alias = '%s'
`, alias)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
clusterName = m.GetString("cluster_name")
return nil
})
if err != nil {
return "", err
}
if clusterName == "" {
err = fmt.Errorf("No cluster found for alias %s", alias)
}
return clusterName, err
}
// readSeeds reads seed from the backend table
func readSeeds(whereCondition string, limit string) ([]SeedOperation, error) {
res := []SeedOperation{}
query := fmt.Sprintf(`
select
agent_seed_id,
target_hostname,
source_hostname,
start_timestamp,
end_timestamp,
is_complete,
is_successful
from
agent_seed
%s
order by
agent_seed_id desc
%s
`, whereCondition, limit)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
seedOperation := SeedOperation{}
seedOperation.SeedId = m.GetInt64("agent_seed_id")
seedOperation.TargetHostname = m.GetString("target_hostname")
seedOperation.SourceHostname = m.GetString("source_hostname")
seedOperation.StartTimestamp = m.GetString("start_timestamp")
seedOperation.EndTimestamp = m.GetString("end_timestamp")
seedOperation.IsComplete = m.GetBool("is_complete")
seedOperation.IsSuccessful = m.GetBool("is_successful")
res = append(res, seedOperation)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// readMissingHostnamesToResolve gets those (unresolved, e.g. VIP) hostnames that *should* be present in
// the hostname_resolve table, but aren't.
func readMissingKeysToResolve() (result InstanceKeyMap, err error) {
query := `
select
hostname_unresolve.unresolved_hostname,
database_instance.port
from
database_instance
join hostname_unresolve on (database_instance.hostname = hostname_unresolve.hostname)
left join hostname_resolve on (database_instance.hostname = hostname_resolve.resolved_hostname)
where
hostname_resolve.hostname is null
`
err = db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
instanceKey := InstanceKey{Hostname: m.GetString("unresolved_hostname"), Port: m.GetInt("port")}
result.AddKey(instanceKey)
return nil
})
if err != nil {
log.Errore(err)
}
return result, err
}
// GetReplicationAnalysis will check for replication problems (dead master; unreachable master; etc)
func GetReplicationAnalysis(includeDowntimed bool) ([]ReplicationAnalysis, error) {
result := []ReplicationAnalysis{}
query := fmt.Sprintf(`
SELECT
master_instance.hostname,
master_instance.port,
MIN(master_instance.master_host) AS master_host,
MIN(master_instance.master_port) AS master_port,
MIN(master_instance.cluster_name) AS cluster_name,
MIN(IFNULL(cluster_alias.alias, master_instance.cluster_name)) AS cluster_alias,
MIN(
master_instance.last_checked <= master_instance.last_seen
AND master_instance.last_attempted_check <= master_instance.last_seen + INTERVAL (2 * %d) SECOND
) IS TRUE AS is_last_check_valid,
MIN(master_instance.master_host IN ('' , '_')
OR master_instance.master_port = 0) AS is_master,
MIN(master_instance.is_co_master) AS is_co_master,
MIN(CONCAT(master_instance.hostname,
':',
master_instance.port) = master_instance.cluster_name) AS is_cluster_master,
COUNT(slave_instance.server_id) AS count_slaves,
IFNULL(SUM(slave_instance.last_checked <= slave_instance.last_seen),
0) AS count_valid_slaves,
IFNULL(SUM(slave_instance.last_checked <= slave_instance.last_seen
AND slave_instance.slave_io_running != 0
AND slave_instance.slave_sql_running != 0),
0) AS count_valid_replicating_slaves,
IFNULL(SUM(slave_instance.last_checked <= slave_instance.last_seen
AND slave_instance.slave_io_running = 0
AND slave_instance.last_io_error RLIKE 'error (connecting|reconnecting) to master'
AND slave_instance.slave_sql_running = 1),
0) AS count_slaves_failing_to_connect_to_master,
MIN(master_instance.replication_depth) AS replication_depth,
GROUP_CONCAT(slave_instance.Hostname, ':', slave_instance.Port) as slave_hosts,
MIN(
master_instance.slave_sql_running = 1
AND master_instance.slave_io_running = 0
AND master_instance.last_io_error RLIKE 'error (connecting|reconnecting) to master'
) AS is_failing_to_connect_to_master,
MIN(
database_instance_downtime.downtime_active IS NULL
OR database_instance_downtime.end_timestamp < NOW()
) IS FALSE AS is_downtimed,
MIN(
IFNULL(database_instance_downtime.end_timestamp, '')
) AS downtime_end_timestamp,
MIN(
IFNULL(TIMESTAMPDIFF(SECOND, NOW(), database_instance_downtime.end_timestamp), 0)
) AS downtime_remaining_seconds,
MIN(
master_instance.binlog_server
) AS is_binlog_server,
MIN(
master_instance.pseudo_gtid
) AS is_pseudo_gtid,
MIN(
master_instance.supports_oracle_gtid
) AS supports_oracle_gtid,
SUM(
slave_instance.oracle_gtid
) AS count_oracle_gtid_slaves,
SUM(
slave_instance.binlog_server
) AS count_binlog_server_slaves,
MIN(
master_instance.mariadb_gtid
) AS is_mariadb_gtid
FROM
database_instance master_instance
LEFT JOIN
hostname_resolve ON (master_instance.hostname = hostname_resolve.hostname)
LEFT JOIN
database_instance slave_instance ON (COALESCE(hostname_resolve.resolved_hostname,
master_instance.hostname) = slave_instance.master_host
AND master_instance.port = slave_instance.master_port)
LEFT JOIN
database_instance_maintenance ON (master_instance.hostname = database_instance_maintenance.hostname
AND master_instance.port = database_instance_maintenance.port
AND database_instance_maintenance.maintenance_active = 1)
LEFT JOIN
database_instance_downtime ON (master_instance.hostname = database_instance_downtime.hostname
AND master_instance.port = database_instance_downtime.port
AND database_instance_downtime.downtime_active = 1)
LEFT JOIN
cluster_alias ON (cluster_alias.cluster_name = master_instance.cluster_name)
WHERE
database_instance_maintenance.database_instance_maintenance_id IS NULL
GROUP BY
master_instance.hostname,
master_instance.port
HAVING
is_last_check_valid = 0
OR count_slaves_failing_to_connect_to_master > 0
OR count_valid_slaves < count_slaves
OR count_valid_replicating_slaves < count_slaves
OR is_failing_to_connect_to_master
ORDER BY
is_master DESC ,
is_cluster_master DESC,
count_slaves DESC
`, config.Config.InstancePollSeconds)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
a := ReplicationAnalysis{Analysis: NoProblem}
a.IsMaster = m.GetBool("is_master")
a.IsCoMaster = m.GetBool("is_co_master")
a.AnalyzedInstanceKey = InstanceKey{Hostname: m.GetString("hostname"), Port: m.GetInt("port")}
a.AnalyzedInstanceMasterKey = InstanceKey{Hostname: m.GetString("master_host"), Port: m.GetInt("master_port")}
a.ClusterDetails.ClusterName = m.GetString("cluster_name")
a.ClusterDetails.ClusterAlias = m.GetString("cluster_alias")
a.LastCheckValid = m.GetBool("is_last_check_valid")
a.CountSlaves = m.GetUint("count_slaves")
a.CountValidSlaves = m.GetUint("count_valid_slaves")
a.CountValidReplicatingSlaves = m.GetUint("count_valid_replicating_slaves")
a.CountSlavesFailingToConnectToMaster = m.GetUint("count_slaves_failing_to_connect_to_master")
a.ReplicationDepth = m.GetUint("replication_depth")
a.IsFailingToConnectToMaster = m.GetBool("is_failing_to_connect_to_master")
a.IsDowntimed = m.GetBool("is_downtimed")
a.DowntimeEndTimestamp = m.GetString("downtime_end_timestamp")
a.DowntimeRemainingSeconds = m.GetInt("downtime_remaining_seconds")
a.IsBinlogServer = m.GetBool("is_binlog_server")
a.ClusterDetails.ReadRecoveryInfo()
a.SlaveHosts = *NewInstanceKeyMap()
a.SlaveHosts.ReadCommaDelimitedList(m.GetString("slave_hosts"))
countOracleGTIDSlaves := m.GetUint("count_oracle_gtid_slaves")
a.OracleGTIDImmediateTopology = m.GetBool("supports_oracle_gtid") && countOracleGTIDSlaves == a.CountValidSlaves && a.CountValidSlaves > 0
a.PseudoGTIDImmediateTopology = m.GetBool("is_pseudo_gtid")
a.MariaDBGTIDImmediateTopology = m.GetBool("is_mariadb_gtid")
countBinlogServerSlaves := m.GetUint("count_binlog_server_slaves")
a.BinlogServerImmediateTopology = countBinlogServerSlaves == a.CountValidSlaves && a.CountValidSlaves > 0
if a.IsMaster && !a.LastCheckValid && a.CountSlaves == 0 {
a.Analysis = DeadMasterWithoutSlaves
a.Description = "Master cannot be reached by orchestrator and has no slave"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountValidSlaves == a.CountSlaves && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadMaster
a.Description = "Master cannot be reached by orchestrator and none of its slaves is replicating"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountSlaves > 0 && a.CountValidSlaves == 0 && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadMasterAndSlaves
a.Description = "Master cannot be reached by orchestrator and none of its slaves is replicating"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountValidSlaves < a.CountSlaves && a.CountValidSlaves > 0 && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadMasterAndSomeSlaves
a.Description = "Master cannot be reached by orchestrator; some of its slaves are unreachable and none of its reachable slaves is replicating"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountValidSlaves > 0 && a.CountValidReplicatingSlaves > 0 {
a.Analysis = UnreachableMaster
a.Description = "Master cannot be reached by orchestrator but it has replicating slaves; possibly a network/host issue"
//
} else if a.IsMaster && a.LastCheckValid && a.CountSlaves == 1 && a.CountValidSlaves == a.CountSlaves && a.CountValidReplicatingSlaves == 0 {
a.Analysis = MasterSingleSlaveNotReplicating
a.Description = "Master is reachable but its single slave is not replicating"
//
} else if a.IsMaster && a.LastCheckValid && a.CountSlaves == 1 && a.CountValidSlaves == 0 {
a.Analysis = MasterSingleSlaveDead
a.Description = "Master is reachable but its single slave is dead"
//
} else if a.IsMaster && a.LastCheckValid && a.CountSlaves > 1 && a.CountValidSlaves == a.CountSlaves && a.CountValidReplicatingSlaves == 0 {
a.Analysis = AllMasterSlavesNotReplicating
a.Description = "Master is reachable but none of its slaves is replicating"
//
} else if a.IsMaster && a.LastCheckValid && a.CountSlaves > 1 && a.CountValidSlaves < a.CountSlaves && a.CountValidSlaves > 0 && a.CountValidReplicatingSlaves == 0 {
a.Analysis = AllMasterSlavesNotReplicatingOrDead
a.Description = "Master is reachable but none of its slaves is replicating"
//
} else /* co-master */ if a.IsCoMaster && !a.LastCheckValid && a.CountSlaves > 0 && a.CountValidSlaves == a.CountSlaves && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadCoMaster
a.Description = "Co-master cannot be reached by orchestrator and none of its slaves is replicating"
//
} else if a.IsCoMaster && !a.LastCheckValid && a.CountSlaves > 0 && a.CountValidSlaves < a.CountSlaves && a.CountValidSlaves > 0 && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadCoMasterAndSomeSlaves
a.Description = "Co-master cannot be reached by orchestrator; some of its slaves are unreachable and none of its reachable slaves is replicating"
//
} else if a.IsCoMaster && !a.LastCheckValid && a.CountValidSlaves > 0 && a.CountValidReplicatingSlaves > 0 {
a.Analysis = UnreachableCoMaster
a.Description = "Co-master cannot be reached by orchestrator but it has replicating slaves; possibly a network/host issue"
//
} else if a.IsCoMaster && a.LastCheckValid && a.CountSlaves > 0 && a.CountValidReplicatingSlaves == 0 {
a.Analysis = AllCoMasterSlavesNotReplicating
a.Description = "Co-master is reachable but none of its slaves is replicating"
//
} else /* intermediate-master */ if !a.IsMaster && !a.LastCheckValid && a.CountSlaves == 1 && a.CountValidSlaves == a.CountSlaves && a.CountSlavesFailingToConnectToMaster == a.CountSlaves && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadIntermediateMasterWithSingleSlaveFailingToConnect
a.Description = "Intermediate master cannot be reached by orchestrator and its (single) slave is failing to connect"
//
} else /* intermediate-master */ if !a.IsMaster && !a.LastCheckValid && a.CountSlaves == 1 && a.CountValidSlaves == a.CountSlaves && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadIntermediateMasterWithSingleSlave
a.Description = "Intermediate master cannot be reached by orchestrator and its (single) slave is not replicating"
//
} else /* intermediate-master */ if !a.IsMaster && !a.LastCheckValid && a.CountSlaves > 1 && a.CountValidSlaves == a.CountSlaves && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadIntermediateMaster
a.Description = "Intermediate master cannot be reached by orchestrator and none of its slaves is replicating"
//
} else if !a.IsMaster && !a.LastCheckValid && a.CountValidSlaves < a.CountSlaves && a.CountValidSlaves > 0 && a.CountValidReplicatingSlaves == 0 {
a.Analysis = DeadIntermediateMasterAndSomeSlaves
a.Description = "Intermediate master cannot be reached by orchestrator; some of its slaves are unreachable and none of its reachable slaves is replicating"
//
} else if !a.IsMaster && !a.LastCheckValid && a.CountValidSlaves > 0 && a.CountValidReplicatingSlaves > 0 {
a.Analysis = UnreachableIntermediateMaster
a.Description = "Intermediate master cannot be reached by orchestrator but it has replicating slaves; possibly a network/host issue"
//
} else if !a.IsMaster && a.LastCheckValid && a.CountSlaves > 1 && a.CountValidReplicatingSlaves == 0 &&
a.CountSlavesFailingToConnectToMaster > 0 && a.CountSlavesFailingToConnectToMaster == a.CountValidSlaves {
// All slaves are either failing to connect to master (and at least one of these have to exist)
// or completely dead.
// Must have at least two slaves to reach such conclusion -- do note that the intermediate master is still
// reachable to orchestrator, so we base our conclusion on slaves only at this point.
a.Analysis = AllIntermediateMasterSlavesFailingToConnectOrDead
a.Description = "Intermediate master is reachable but all of its slaves are failing to connect"
//
} else if !a.IsMaster && a.LastCheckValid && a.CountSlaves > 0 && a.CountValidReplicatingSlaves == 0 {
a.Analysis = AllIntermediateMasterSlavesNotReplicating
a.Description = "Intermediate master is reachable but none of its slaves is replicating"
//
} else if a.IsBinlogServer && a.IsFailingToConnectToMaster {
a.Analysis = BinlogServerFailingToConnectToMaster
a.Description = "Binlog server is unable to connect to its master"
//
} else if a.ReplicationDepth == 1 && a.IsFailingToConnectToMaster {
a.Analysis = FirstTierSlaveFailingToConnectToMaster
a.Description = "1st tier slave (directly replicating from topology master) is unable to connect to the master"
//
}
// else if a.IsMaster && a.CountSlaves == 0 {
// a.Analysis = MasterWithoutSlaves
// a.Description = "Master has no slaves"
// }
if a.Analysis != NoProblem {
skipThisHost := false
for _, filter := range config.Config.RecoveryIgnoreHostnameFilters {
if matched, _ := regexp.MatchString(filter, a.AnalyzedInstanceKey.Hostname); matched {
skipThisHost = true
}
}
if a.IsDowntimed && !includeDowntimed {
skipThisHost = true
}
if !skipThisHost {
result = append(result, a)
}
}
return nil
})
if err != nil {
log.Errore(err)
}
return result, err
}
// readRecoveries reads recovery entry/audit entires from topology_recovery
func readRecoveries(whereCondition string, limit string) ([]TopologyRecovery, error) {
res := []TopologyRecovery{}
query := fmt.Sprintf(`
select
recovery_id,
hostname,
port,
(IFNULL(end_active_period_unixtime, 0) = 0) as is_active,
start_active_period,
IFNULL(end_active_period_unixtime, 0) as end_active_period_unixtime,
IFNULL(end_recovery, '') AS end_recovery,
is_successful,
processing_node_hostname,
processcing_node_token,
ifnull(successor_hostname, '') as successor_hostname,
ifnull(successor_port, 0) as successor_port,
analysis,
cluster_name,
cluster_alias,
count_affected_slaves,
slave_hosts,
participating_instances,
lost_slaves,
all_errors,
acknowledged,
acknowledged_at,
acknowledged_by,
acknowledge_comment
from
topology_recovery
%s
order by
recovery_id desc
%s
`, whereCondition, limit)
err := db.QueryOrchestratorRowsMap(query, func(m sqlutils.RowMap) error {
topologyRecovery := *NewTopologyRecovery(inst.ReplicationAnalysis{})
topologyRecovery.Id = m.GetInt64("recovery_id")
topologyRecovery.IsActive = m.GetBool("is_active")
topologyRecovery.RecoveryStartTimestamp = m.GetString("start_active_period")
topologyRecovery.RecoveryEndTimestamp = m.GetString("end_recovery")
topologyRecovery.IsSuccessful = m.GetBool("is_successful")
topologyRecovery.ProcessingNodeHostname = m.GetString("processing_node_hostname")
topologyRecovery.ProcessingNodeToken = m.GetString("processcing_node_token")
topologyRecovery.AnalysisEntry.AnalyzedInstanceKey.Hostname = m.GetString("hostname")
topologyRecovery.AnalysisEntry.AnalyzedInstanceKey.Port = m.GetInt("port")
topologyRecovery.AnalysisEntry.Analysis = inst.AnalysisCode(m.GetString("analysis"))
topologyRecovery.AnalysisEntry.ClusterDetails.ClusterName = m.GetString("cluster_name")
topologyRecovery.AnalysisEntry.ClusterDetails.ClusterAlias = m.GetString("cluster_alias")
topologyRecovery.AnalysisEntry.CountSlaves = m.GetUint("count_affected_slaves")
topologyRecovery.AnalysisEntry.ReadSlaveHostsFromString(m.GetString("slave_hosts"))
topologyRecovery.SuccessorKey = &inst.InstanceKey{}
topologyRecovery.SuccessorKey.Hostname = m.GetString("successor_hostname")
topologyRecovery.SuccessorKey.Port = m.GetInt("successor_port")
topologyRecovery.AnalysisEntry.ClusterDetails.ReadRecoveryInfo()
topologyRecovery.AllErrors = strings.Split(m.GetString("all_errors"), "\n")
topologyRecovery.LostSlaves.ReadCommaDelimitedList(m.GetString("lost_slaves"))
topologyRecovery.ParticipatingInstanceKeys.ReadCommaDelimitedList(m.GetString("participating_instances"))
topologyRecovery.Acknowledged = m.GetBool("acknowledged")
topologyRecovery.AcknowledgedAt = m.GetString("acknowledged_at")
topologyRecovery.AcknowledgedBy = m.GetString("acknowledged_by")
topologyRecovery.AcknowledgedComment = m.GetString("acknowledge_comment")
res = append(res, topologyRecovery)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}