// 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
}
func getHostAttributesByClause(whereClause string, args []interface{}) ([]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.QueryOrchestrator(query, args, 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
}
/*
root@myorchestrator [orchestrator]> select * from candidate_database_instance;
+-------------------+------+---------------------+----------+----------------+
| hostname | port | last_suggested | priority | promotion_rule |
+-------------------+------+---------------------+----------+----------------+
| host1.example.com | 3306 | 2016-11-22 17:41:06 | 1 | prefer |
| host2.example.com | 3306 | 2016-11-22 17:40:24 | 1 | prefer |
+-------------------+------+---------------------+----------+----------------+
2 rows in set (0.00 sec)
*/
func BulkReadCandidateDatabaseInstance() ([]CandidateDatabaseInstance, error) {
if config.Config.DatabaselessMode__experimental {
return nil, nil // no data to return if not using a database
}
var candidateDatabaseInstances []CandidateDatabaseInstance
// Read all promotion rules from the table
query := `
SELECT hostname,
port,
promotion_rule -- no munging done here yet
FROM candidate_database_instance
`
err := db.QueryOrchestrator(query, nil, func(m sqlutils.RowMap) error {
cdi := CandidateDatabaseInstance{
Hostname: m.GetString("hostname"),
Port: m.GetInt("port"),
PromotionRule: CandidatePromotionRule(m.GetString("promotion_rule")),
}
// add to end of candidateDatabaseInstances
candidateDatabaseInstances = append(candidateDatabaseInstances, cdi)
return nil
})
return candidateDatabaseInstances, err
}
func ReadAvailableNodes(onlyHttpNodes bool) ([]string, error) {
res := []string{}
extraInfo := ""
if onlyHttpNodes {
extraInfo = string(OrchestratorExecutionHttpMode)
}
query := `
select
concat(hostname, ';', token, ';', app_version) 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
}
// 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
}
// 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
}
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
}
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
}
// ReadAliasByClusterName returns the cluster alias for the given cluster name,
// or the cluster name itself if not explicit alias found
func ReadAliasByClusterName(clusterName string) (alias string, err error) {
alias = clusterName // default return value
query := `
select
alias
from
cluster_alias
where
cluster_name = ?
`
err = db.QueryOrchestrator(query, sqlutils.Args(clusterName), func(m sqlutils.RowMap) error {
alias = m.GetString("alias")
return nil
})
return clusterName, err
}
// 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
}
// TokenIsValid checks to see whether a given token exists and is not outdated.
func TokenIsValid(publicToken string, secretToken string) (result bool, err error) {
query := `
select
count(*) as valid_token
from
access_token
where
public_token=?
and secret_token=?
and (
generated_at >= now() - interval ? minute
or is_reentrant = 1
)
`
err = db.QueryOrchestrator(query, sqlutils.Args(publicToken, secretToken, config.Config.AccessTokenExpiryMinutes), func(m sqlutils.RowMap) error {
result = m.GetInt("valid_token") > 0
return nil
})
return result, log.Errore(err)
}
func TokenBelongsToHealthyHttpService(token string) (result bool, err error) {
extraInfo := string(OrchestratorExecutionHttpMode)
query := `
select
token
from
node_health
where
and token = ?
and extra_info = ?
`
err = db.QueryOrchestrator(query, sqlutils.Args(token, extraInfo), func(m sqlutils.RowMap) error {
// Row exists? We're happy
result = true
return nil
})
return result, log.Errore(err)
}
// 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
}
// ReadClusterPoolInstances reads cluster-pool-instance associationsfor given cluster and pool
func ReadClusterPoolInstances(clusterName string, pool string) (result [](*ClusterPoolInstance), err error) {
args := sqlutils.Args()
whereClause := ``
if clusterName != "" {
whereClause = `
where
database_instance.cluster_name = ?
and ? in ('', pool)
`
args = append(args, clusterName, pool)
}
query := fmt.Sprintf(`
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)
%s
`, whereClause)
err = db.QueryOrchestrator(query, args, 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
}
// AcquireAccessToken attempts to acquire a hopefully free token; returning in such case
// the secretToken as proof of ownership.
func AcquireAccessToken(publicToken string) (secretToken string, err error) {
secretToken = ""
sqlResult, err := db.ExecOrchestrator(`
update access_token
set
is_acquired=1,
acquired_at=now()
where
public_token=?
and (
(
is_acquired=0
and generated_at > now() - interval ? second
)
or is_reentrant=1
)
`,
publicToken, config.Config.AccessTokenUseExpirySeconds,
)
if err != nil {
return secretToken, log.Errore(err)
}
rows, err := sqlResult.RowsAffected()
if err != nil {
return secretToken, log.Errore(err)
}
if rows == 0 {
return secretToken, log.Errorf("Cannot acquire token %s", publicToken)
}
// Seems like we made it!
query := `
select secret_token from access_token where public_token=?
`
err = db.QueryOrchestrator(query, sqlutils.Args(publicToken), func(m sqlutils.RowMap) error {
secretToken = m.GetString("secret_token")
return nil
})
return secretToken, log.Errore(err)
}
// ReadClusterNameByAlias
func ReadClusterNameByAlias(alias string) (clusterName string, err error) {
query := `
select
cluster_name
from
cluster_alias
where
alias = ?
or cluster_name = ?
`
err = db.QueryOrchestrator(query, sqlutils.Args(alias, 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
}
// IsRecoveryDisabled returns true if Recoveries are disabled globally
func IsRecoveryDisabled() (bool, error) {
var (
disabled bool // default is false!
err error
)
query := `
SELECT
COUNT(*) as mycount
FROM
global_recovery_disable
WHERE
disable_recovery=?
`
err = db.QueryOrchestrator(query, sqlutils.Args(1), func(m sqlutils.RowMap) error {
mycount := m.GetInt("mycount")
disabled = (mycount > 0)
return nil
})
if err != nil {
err = log.Errorf("recovery.IsRecoveryDisabled(): %v", err)
}
return disabled, err
}
// readSeeds reads seed from the backend table
func readSeeds(whereCondition string, args []interface{}, 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.QueryOrchestrator(query, args, 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
}
// 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
OR left(master_instance.master_host, 2) = '//') 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,
IFNULL(SUM(
current_relay_log_file=prev_relay_log_file
and current_relay_log_pos=prev_relay_log_pos
and current_seen != prev_seen),
0) AS count_stale_slaves,
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,
IFNULL(SUM(slave_instance.log_bin
AND slave_instance.log_slave_updates
AND slave_instance.binlog_format = 'STATEMENT'),
0) AS count_statement_based_loggin_slaves,
IFNULL(SUM(slave_instance.log_bin
AND slave_instance.log_slave_updates
AND slave_instance.binlog_format = 'MIXED'),
0) AS count_mixed_based_loggin_slaves,
IFNULL(SUM(slave_instance.log_bin
AND slave_instance.log_slave_updates
AND slave_instance.binlog_format = 'ROW'),
0) AS count_row_based_loggin_slaves,
COUNT(DISTINCT IF(
slave_instance.log_bin AND slave_instance.log_slave_updates,
substring_index(slave_instance.version, '.', 2),
NULL)
) AS count_distinct_logging_major_versions
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)
LEFT JOIN
database_instance_recent_relaylog_history ON (
slave_instance.hostname = database_instance_recent_relaylog_history.hostname
AND slave_instance.port = database_instance_recent_relaylog_history.port)
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.CountReplicas = m.GetUint("count_slaves")
a.CountValidReplicas = m.GetUint("count_valid_slaves")
a.CountValidReplicatingReplicas = m.GetUint("count_valid_replicating_slaves")
a.CountReplicasFailingToConnectToMaster = m.GetUint("count_slaves_failing_to_connect_to_master")
a.CountStaleReplicas = m.GetUint("count_stale_slaves")
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.CountValidReplicas && a.CountValidReplicas > 0
countValidMariaDBGTIDSlaves := m.GetUint("count_valid_mariadb_gtid_slaves")
a.MariaDBGTIDImmediateTopology = countValidMariaDBGTIDSlaves == a.CountValidReplicas && a.CountValidReplicas > 0
countValidBinlogServerSlaves := m.GetUint("count_valid_binlog_server_slaves")
a.BinlogServerImmediateTopology = countValidBinlogServerSlaves == a.CountValidReplicas && a.CountValidReplicas > 0
a.PseudoGTIDImmediateTopology = m.GetBool("is_pseudo_gtid")
a.CountStatementBasedLoggingReplicas = m.GetUint("count_statement_based_loggin_slaves")
a.CountMixedBasedLoggingReplicas = m.GetUint("count_mixed_based_loggin_slaves")
a.CountRowBasedLoggingReplicas = m.GetUint("count_row_based_loggin_slaves")
a.CountDistinctMajorVersionsLoggingReplicas = m.GetUint("count_distinct_logging_major_versions")
if a.IsMaster && !a.LastCheckValid && a.CountReplicas == 0 {
a.Analysis = DeadMasterWithoutSlaves
a.Description = "Master cannot be reached by orchestrator and has no slave"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountValidReplicas == a.CountReplicas && a.CountValidReplicatingReplicas == 0 {
a.Analysis = DeadMaster
a.Description = "Master cannot be reached by orchestrator and none of its replicas is replicating"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountReplicas > 0 && a.CountValidReplicas == 0 && a.CountValidReplicatingReplicas == 0 {
a.Analysis = DeadMasterAndSlaves
a.Description = "Master cannot be reached by orchestrator and none of its replicas is replicating"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountValidReplicas < a.CountReplicas && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas == 0 {
a.Analysis = DeadMasterAndSomeSlaves
a.Description = "Master cannot be reached by orchestrator; some of its replicas are unreachable and none of its reachable replicas is replicating"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountStaleReplicas == a.CountReplicas && a.CountValidReplicatingReplicas > 0 {
a.Analysis = UnreachableMasterWithStaleSlaves
a.Description = "Master cannot be reached by orchestrator and has running yet stale replicas"
//
} else if a.IsMaster && !a.LastCheckValid && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas > 0 {
a.Analysis = UnreachableMaster
a.Description = "Master cannot be reached by orchestrator but it has replicating replicas; possibly a network/host issue"
//
} else if a.IsMaster && a.LastCheckValid && a.CountReplicas == 1 && a.CountValidReplicas == a.CountReplicas && a.CountValidReplicatingReplicas == 0 {
a.Analysis = MasterSingleSlaveNotReplicating
a.Description = "Master is reachable but its single slave is not replicating"
//
} else if a.IsMaster && a.LastCheckValid && a.CountReplicas == 1 && a.CountValidReplicas == 0 {
a.Analysis = MasterSingleSlaveDead
a.Description = "Master is reachable but its single slave is dead"
//
} else if a.IsMaster && a.LastCheckValid && a.CountReplicas > 1 && a.CountValidReplicas == a.CountReplicas && a.CountValidReplicatingReplicas == 0 {
a.Analysis = AllMasterSlavesNotReplicating
a.Description = "Master is reachable but none of its replicas is replicating"
//
} else if a.IsMaster && a.LastCheckValid && a.CountReplicas > 1 && a.CountValidReplicas < a.CountReplicas && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas == 0 {
a.Analysis = AllMasterSlavesNotReplicatingOrDead
a.Description = "Master is reachable but none of its replicas is replicating"
//
} else if a.IsMaster && a.LastCheckValid && a.CountReplicas > 1 && a.CountStaleReplicas == a.CountReplicas && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas > 0 {
a.Analysis = AllMasterSlavesStale
a.Description = "Master is reachable but all of its replicas are stale, although attempting to replicate"
//
} else /* co-master */ if a.IsCoMaster && !a.LastCheckValid && a.CountReplicas > 0 && a.CountValidReplicas == a.CountReplicas && a.CountValidReplicatingReplicas == 0 {
a.Analysis = DeadCoMaster
a.Description = "Co-master cannot be reached by orchestrator and none of its replicas is replicating"
//
} else if a.IsCoMaster && !a.LastCheckValid && a.CountReplicas > 0 && a.CountValidReplicas < a.CountReplicas && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas == 0 {
a.Analysis = DeadCoMasterAndSomeSlaves
a.Description = "Co-master cannot be reached by orchestrator; some of its replicas are unreachable and none of its reachable replicas is replicating"
//
} else if a.IsCoMaster && !a.LastCheckValid && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas > 0 {
a.Analysis = UnreachableCoMaster
a.Description = "Co-master cannot be reached by orchestrator but it has replicating replicas; possibly a network/host issue"
//
} else if a.IsCoMaster && a.LastCheckValid && a.CountReplicas > 0 && a.CountValidReplicatingReplicas == 0 {
a.Analysis = AllCoMasterSlavesNotReplicating
a.Description = "Co-master is reachable but none of its replicas is replicating"
//
} else /* intermediate-master */ if !a.IsMaster && !a.LastCheckValid && a.CountReplicas == 1 && a.CountValidReplicas == a.CountReplicas && a.CountReplicasFailingToConnectToMaster == a.CountReplicas && a.CountValidReplicatingReplicas == 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.CountReplicas == 1 && a.CountValidReplicas == a.CountReplicas && a.CountValidReplicatingReplicas == 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.CountReplicas > 1 && a.CountValidReplicas == a.CountReplicas && a.CountValidReplicatingReplicas == 0 {
a.Analysis = DeadIntermediateMaster
a.Description = "Intermediate master cannot be reached by orchestrator and none of its replicas is replicating"
//
} else if !a.IsMaster && !a.LastCheckValid && a.CountValidReplicas < a.CountReplicas && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas == 0 {
a.Analysis = DeadIntermediateMasterAndSomeSlaves
a.Description = "Intermediate master cannot be reached by orchestrator; some of its replicas are unreachable and none of its reachable replicas is replicating"
//
} else if !a.IsMaster && !a.LastCheckValid && a.CountValidReplicas > 0 && a.CountValidReplicatingReplicas > 0 {
a.Analysis = UnreachableIntermediateMaster
a.Description = "Intermediate master cannot be reached by orchestrator but it has replicating replicas; possibly a network/host issue"
//
} else if !a.IsMaster && a.LastCheckValid && a.CountReplicas > 1 && a.CountValidReplicatingReplicas == 0 &&
a.CountReplicasFailingToConnectToMaster > 0 && a.CountReplicasFailingToConnectToMaster == a.CountValidReplicas {
// All replicas are either failing to connect to master (and at least one of these have to exist)
// or completely dead.
// Must have at least two replicas to reach such conclusion -- do note that the intermediate master is still
// reachable to orchestrator, so we base our conclusion on replicas only at this point.
a.Analysis = AllIntermediateMasterSlavesFailingToConnectOrDead
a.Description = "Intermediate master is reachable but all of its replicas are failing to connect"
//
} else if !a.IsMaster && a.LastCheckValid && a.CountReplicas > 0 && a.CountValidReplicatingReplicas == 0 {
a.Analysis = AllIntermediateMasterSlavesNotReplicating
a.Description = "Intermediate master is reachable but none of its replicas 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.CountReplicas == 0 {
// a.Analysis = MasterWithoutSlaves
// a.Description = "Master has no replicas"
// }
appendAnalysis := func(analysis *ReplicationAnalysis) {
if a.Analysis == NoProblem && len(a.StructureAnalysis) == 0 {
return
}
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)
}
}
{
// Moving on to structure analysis
// We also do structural checks. See if there's potential danger in promotions
if a.IsMaster && a.CountStatementBasedLoggingReplicas > 0 && a.CountMixedBasedLoggingReplicas > 0 {
a.StructureAnalysis = append(a.StructureAnalysis, StatementAndMixedLoggingSlavesStructureWarning)
}
if a.IsMaster && a.CountStatementBasedLoggingReplicas > 0 && a.CountRowBasedLoggingReplicas > 0 {
a.StructureAnalysis = append(a.StructureAnalysis, StatementAndRowLoggingSlavesStructureWarning)
}
if a.IsMaster && a.CountMixedBasedLoggingReplicas > 0 && a.CountRowBasedLoggingReplicas > 0 {
a.StructureAnalysis = append(a.StructureAnalysis, MixedAndRowLoggingSlavesStructureWarning)
}
if a.IsMaster && a.CountDistinctMajorVersionsLoggingReplicas > 1 {
a.StructureAnalysis = append(a.StructureAnalysis, MultipleMajorVersionsLoggingSlaves)
}
}
appendAnalysis(&a)
if a.CountReplicas > 0 && auditAnalysis {
// Interesting enough for analysis
go auditInstanceAnalysisInChangelog(&a.AnalyzedInstanceKey, a.Analysis)
}
return nil
})
if err != nil {
log.Errore(err)
}
return result, err
}
