// SeedOperationState reads states for a given seed operation
func ReadSeedStates(seedId int64) ([]SeedOperationState, error) {
res := []SeedOperationState{}
query := `
select
agent_seed_state_id,
agent_seed_id,
state_timestamp,
state_action,
error_message
from
agent_seed_state
where
agent_seed_id = ?
order by
agent_seed_state_id desc
`
err := db.QueryOrchestrator(query, sqlutils.Args(seedId), 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
}
// 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 := `
select
hostname,
port,
token,
last_submitted,
mysql_port
from
host_agent
where
hostname = ?
`
err := db.QueryOrchestrator(query, sqlutils.Args(hostname), 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
}
// ReadMaintenanceInstanceKey will return the instanceKey for active maintenance by maintenanceToken
func ReadMaintenanceInstanceKey(maintenanceToken int64) (*InstanceKey, error) {
var res *InstanceKey
query := `
select
hostname, port
from
database_instance_maintenance
where
database_instance_maintenance_id = ?
`
err := db.QueryOrchestrator(query, sqlutils.Args(maintenanceToken), 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
}
// AgentSeedDetails reads details from backend table
func AgentSeedDetails(seedId int64) ([]SeedOperation, error) {
whereCondition := `
where
agent_seed_id = ?
`
return readSeeds(whereCondition, sqlutils.Args(seedId), "")
}
func ReadClusterPoolInstances(clusterName string) (*PoolInstancesMap, error) {
var poolInstancesMap = make(PoolInstancesMap)
query := `
select
database_instance_pool.*
from
database_instance
join database_instance_pool using (hostname, port)
where
database_instance.cluster_name = ?
`
err := db.QueryOrchestrator(query, sqlutils.Args(clusterName), 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
}
func readAvailableNodes(onlyHttpNodes bool) ([]string, error) {
res := []string{}
extraInfo := ""
if onlyHttpNodes {
extraInfo = string(OrchestratorExecutionHttpMode)
}
query := `
select
concat(hostname, ';', token) as node
from
node_health
where
last_seen_active > now() - interval ? second
and ? in (extra_info, '')
order by
hostname
`
err := db.QueryOrchestrator(query, sqlutils.Args(registrationPollSeconds*2, extraInfo), func(m sqlutils.RowMap) error {
res = append(res, m.GetString("node"))
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadRecentlyActiveClusterRecovery reads recently completed entries for a given cluster
func ReadRecentlyActiveClusterRecovery(clusterName string) ([]TopologyRecovery, error) {
whereClause := `
where
end_recovery > now() - interval 5 minute
and cluster_name=?`
return readRecoveries(whereClause, ``, sqlutils.Args(clusterName))
}
// ReadActiveRecoveries reads active recovery entry/audit entires from topology_recovery
func ReadActiveRecoveries() ([]TopologyRecovery, error) {
return readRecoveries(`
where
in_active_period=1
and end_recovery is null`,
``, sqlutils.Args())
}
// ReadInActivePeriodClusterRecovery reads recoveries (possibly complete!) that are in active period.
// (may be used to block further recoveries on this cluster)
func ReadInActivePeriodClusterRecovery(clusterName string) ([]TopologyRecovery, error) {
whereClause := `
where
in_active_period=1
and cluster_name=?`
return readRecoveries(whereClause, ``, sqlutils.Args(clusterName))
}
// AcknowledgeInstanceRecoveries marks active recoveries for given instane as acknowledged.
// This also implied clearing their active period, which in turn enables further recoveries on those topologies
func AcknowledgeInstanceRecoveries(instanceKey *inst.InstanceKey, owner string, comment string) (countAcknowledgedEntries int64, err error) {
whereClause := `
hostname = ?
and port = ?
`
return acknowledgeRecoveries(owner, comment, false, whereClause, sqlutils.Args(instanceKey.Hostname, instanceKey.Port))
}
// acknowledgeRecoveries sets acknowledged* details and clears the in_active_period flags from a set of entries
func acknowledgeRecoveries(owner string, comment string, markEndRecovery bool, whereClause string, args []interface{}) (countAcknowledgedEntries int64, err error) {
additionalSet := ``
if markEndRecovery {
additionalSet = `
end_recovery=IFNULL(end_recovery, NOW()),
`
}
query := fmt.Sprintf(`
update topology_recovery set
in_active_period = 0,
end_active_period_unixtime = IF(end_active_period_unixtime = 0, UNIX_TIMESTAMP(), end_active_period_unixtime),
%s
acknowledged = 1,
acknowledged_at = NOW(),
acknowledged_by = ?,
acknowledge_comment = ?
where
acknowledged = 0
and
%s
`, additionalSet, whereClause)
args = append(sqlutils.Args(owner, comment), args...)
sqlResult, err := db.ExecOrchestrator(query, args...)
if err != nil {
return 0, log.Errore(err)
}
rows, err := sqlResult.RowsAffected()
return rows, log.Errore(err)
}
// ReadLongRunningProcesses returns the list of current known long running processes of all instances
func ReadLongRunningProcesses(filter string) ([]Process, error) {
longRunningProcesses := []Process{}
if filter != "" {
filter = "%" + filter + "%"
} else {
filter = "%"
}
query := `
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
where
hostname like ?
or process_user like ?
or process_host like ?
or process_db like ?
or process_command like ?
or process_state like ?
or process_info like ?
order by
process_time_seconds desc
`
args := sqlutils.Args(filter, filter, filter, filter, filter, filter, filter)
err := db.QueryOrchestrator(query, args, 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
}
// GetHostAttributesByMatch
func GetHostAttributesByAttribute(attributeName string, valueMatch string) ([]HostAttributes, error) {
if valueMatch == "" {
valueMatch = ".?"
}
whereClause := ` where attribute_name = ? and attribute_value rlike ?`
return getHostAttributesByClause(whereClause, sqlutils.Args(attributeName, valueMatch))
}
// ReadRecentlyActiveInstanceRecovery reads recently completed entries for a given instance
func ReadRecentlyActiveInstanceRecovery(instanceKey *inst.InstanceKey) ([]TopologyRecovery, error) {
whereClause := `
where
end_recovery > now() - interval 5 minute
and
successor_hostname=? and successor_port=?`
return readRecoveries(whereClause, ``, sqlutils.Args(instanceKey.Hostname, instanceKey.Port))
}
// ReadInActivePeriodSuccessorInstanceRecovery reads completed recoveries for a given instance, where said instance
// was promoted as result, still in active period (may be used to block further recoveries should this instance die)
func ReadInActivePeriodSuccessorInstanceRecovery(instanceKey *inst.InstanceKey) ([]TopologyRecovery, error) {
whereClause := `
where
in_active_period=1
and
successor_hostname=? and successor_port=?`
return readRecoveries(whereClause, ``, sqlutils.Args(instanceKey.Hostname, instanceKey.Port))
}
func GetEquivalentMasterCoordinates(instanceCoordinates *InstanceBinlogCoordinates) (result [](*InstanceBinlogCoordinates), err error) {
query := `
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 = ?
and master2_port = ?
and master2_binary_log_file = ?
and master2_binary_log_pos = ?
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 = ?
and master1_port = ?
and master1_binary_log_file = ?
and master1_binary_log_pos = ?
`
args := sqlutils.Args(
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.QueryOrchestrator(query, args, 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
}
// ReadRecentCompletedSeedsForHost reads active seeds where host participates either as source or target
func ReadRecentCompletedSeedsForHost(hostname string) ([]SeedOperation, error) {
whereCondition := `
where
is_complete = 1
and (
target_hostname = ?
or source_hostname = ?
)
`
return readSeeds(whereCondition, sqlutils.Args(hostname, hostname), "limit 10")
}
func ReadPendingAsyncRequests(limit int) (res [](*AsyncRequest), err error) {
limitClause := ``
args := sqlutils.Args()
if limit > 0 {
limitClause = `limit ?`
args = append(args, 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.QueryOrchestrator(query, args, 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
}
// ReadActiveSeedsForHost reads active seeds where host participates either as source or target
func ReadActiveSeedsForHost(hostname string) ([]SeedOperation, error) {
whereCondition := `
where
is_complete = 0
and (
target_hostname = ?
or source_hostname = ?
)
`
return readSeeds(whereCondition, sqlutils.Args(hostname, hostname), "")
}
// ReadRecentAudit returns a list of audit entries order chronologically descending, using page number.
func ReadRecentAudit(instanceKey *InstanceKey, page int) ([]Audit, error) {
res := []Audit{}
args := sqlutils.Args()
whereCondition := ``
if instanceKey != nil {
whereCondition = `where hostname=? and port=?`
args = append(args, 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 ?
offset ?
`, whereCondition)
args = append(args, config.Config.AuditPageSize, page*config.Config.AuditPageSize)
err := db.QueryOrchestrator(query, args, 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
}
// ReadCRecoveries reads latest recovery entries from topology_recovery
func ReadRecentRecoveries(clusterName string, unacknowledgedOnly bool, page int) ([]TopologyRecovery, error) {
whereConditions := []string{}
whereClause := ""
args := sqlutils.Args()
if unacknowledgedOnly {
whereConditions = append(whereConditions, `acknowledged=0`)
}
if clusterName != "" {
whereConditions = append(whereConditions, `cluster_name=?`)
args = append(args, clusterName)
}
if len(whereConditions) > 0 {
whereClause = fmt.Sprintf("where %s", strings.Join(whereConditions, " and "))
}
limit := `
limit ?
offset ?`
args = append(args, config.Config.AuditPageSize, page*config.Config.AuditPageSize)
return readRecoveries(whereClause, limit, args)
}
// ReadOutdatedAgentsHosts returns agents that need to be updated
func ReadOutdatedAgentsHosts() ([]string, error) {
res := []string{}
query := `
select
hostname
from
host_agent
where
IFNULL(last_checked < now() - interval ? minute, true)
`
err := db.QueryOrchestrator(query, sqlutils.Args(config.Config.AgentPollMinutes), func(m sqlutils.RowMap) error {
hostname := m.GetString("hostname")
res = append(res, hostname)
return nil
})
if err != nil {
log.Errore(err)
}
return res, err
}
// ReadBlockedRecoveries reads blocked recovery entries, potentially filtered by cluster name (empty to unfilter)
func ReadBlockedRecoveries(clusterName string) ([]BlockedTopologyRecovery, error) {
res := []BlockedTopologyRecovery{}
whereClause := ""
args := sqlutils.Args()
if clusterName != "" {
whereClause = `where cluster_name = ?`
args = append(args, 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.QueryOrchestrator(query, args, 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
}
// ReadClusterByAlias
func ReadClusterByAlias(alias string) (string, error) {
clusterName := ""
query := `
select
cluster_name
from
cluster_alias
where
alias = ?
`
err := db.QueryOrchestrator(query, sqlutils.Args(alias), 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
}
// ReadResolvedHostname returns the resolved hostname given a hostname, or empty if not exists
func ReadResolvedHostname(hostname string) (string, error) {
var resolvedHostname string = ""
query := `
select
resolved_hostname
from
hostname_resolve
where
hostname = ?
`
err := db.QueryOrchestrator(query, sqlutils.Args(hostname), 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 := `
select
domain_name
from
cluster_domain_name
where
cluster_name = ?
`
err := db.QueryOrchestrator(query, sqlutils.Args(clusterName), 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
}
// GetHostAttributesByMatch
func GetHostAttributesByMatch(hostnameMatch string, attributeNameMatch string, attributeValueMatch string) ([]HostAttributes, error) {
terms := []string{}
args := sqlutils.Args()
if hostnameMatch != "" {
terms = append(terms, ` hostname rlike ? `)
args = append(args, hostnameMatch)
}
if attributeNameMatch != "" {
terms = append(terms, ` attribute_name rlike ? `)
args = append(args, attributeNameMatch)
}
if attributeValueMatch != "" {
terms = append(terms, ` attribute_value rlike ? `)
args = append(args, attributeValueMatch)
}
if len(terms) == 0 {
return getHostAttributesByClause("", args)
}
whereCondition := fmt.Sprintf(" where %s ", strings.Join(terms, " and "))
return getHostAttributesByClause(whereCondition, args)
}
// GetReplicationAnalysis will check for replication problems (dead master; unreachable master; etc)
func GetReplicationAnalysis(clusterName string, includeDowntimed bool, auditAnalysis bool) ([]ReplicationAnalysis, error) {
result := []ReplicationAnalysis{}
args := sqlutils.Args(config.Config.InstancePollSeconds, clusterName)
analysisQueryReductionClause := ``
if config.Config.ReduceReplicationAnalysisCount {
analysisQueryReductionClause = `
HAVING
(MIN(
master_instance.last_checked <= master_instance.last_seen
AND master_instance.last_attempted_check <= master_instance.last_seen + INTERVAL (2 * ?) SECOND
) IS TRUE /* AS is_last_check_valid */) = 0
OR (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 */ > 0)
OR (IFNULL(SUM(slave_instance.last_checked <= slave_instance.last_seen),
0) /* AS count_valid_slaves */ < COUNT(slave_instance.server_id) /* AS count_slaves */)
OR (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 */ < COUNT(slave_instance.server_id) /* AS count_slaves */)
OR (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 */)
OR (COUNT(slave_instance.server_id) /* AS count_slaves */ > 0)
`
args = append(args, config.Config.InstancePollSeconds)
}
// "OR count_slaves > 0" above is a recent addition, which, granted, makes some previous conditions redundant.
// It gives more output, and more "NoProblem" messages that I am now interested in for purpose of auditing in database_instance_analysis_changelog
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 * ?) 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,
IFNULL(SUM(slave_instance.last_checked <= slave_instance.last_seen
AND slave_instance.oracle_gtid != 0),
0) AS count_valid_oracle_gtid_slaves,
SUM(
slave_instance.binlog_server
) AS count_binlog_server_slaves,
IFNULL(SUM(slave_instance.last_checked <= slave_instance.last_seen
AND slave_instance.binlog_server != 0),
0) AS count_valid_binlog_server_slaves,
MIN(
master_instance.mariadb_gtid
) AS is_mariadb_gtid,
SUM(
slave_instance.mariadb_gtid
) AS count_mariadb_gtid_slaves,
IFNULL(SUM(slave_instance.last_checked <= slave_instance.last_seen
AND slave_instance.mariadb_gtid != 0),
0) AS count_valid_mariadb_gtid_slaves
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
AND ? IN ('', master_instance.cluster_name)
GROUP BY
master_instance.hostname,
master_instance.port
%s
ORDER BY
is_master DESC ,
is_cluster_master DESC,
count_slaves DESC
`, analysisQueryReductionClause)
err := db.QueryOrchestrator(query, args, 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"))
countValidOracleGTIDSlaves := m.GetUint("count_valid_oracle_gtid_slaves")
a.OracleGTIDImmediateTopology = countValidOracleGTIDSlaves == a.CountValidSlaves && a.CountValidSlaves > 0
countValidMariaDBGTIDSlaves := m.GetUint("count_valid_mariadb_gtid_slaves")
a.MariaDBGTIDImmediateTopology = countValidMariaDBGTIDSlaves == a.CountValidSlaves && a.CountValidSlaves > 0
countValidBinlogServerSlaves := m.GetUint("count_valid_binlog_server_slaves")
a.BinlogServerImmediateTopology = countValidBinlogServerSlaves == a.CountValidSlaves && a.CountValidSlaves > 0
a.PseudoGTIDImmediateTopology = m.GetBool("is_pseudo_gtid")
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)
}
}
if a.CountSlaves > 0 && auditAnalysis {
// Interesting enough for analysis
go auditInstanceAnalysisInChangelog(&a.AnalyzedInstanceKey, a.Analysis)
}
return nil
})
if err != nil {
log.Errore(err)
}
return result, err
}
// ReadFailureDetection
func ReadFailureDetection(detectionId int64) ([]TopologyRecovery, error) {
whereClause := `where detection_id = ?`
return readFailureDetections(whereClause, ``, sqlutils.Args(detectionId))
}
// ReadRecentSeeds reads seeds from backend table.
func ReadRecentSeeds() ([]SeedOperation, error) {
return readSeeds(``, sqlutils.Args(), "limit 100")
}