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sdb-admin dump
command to dump cluster objects into a DDL file similar to the usage of mysqldump
--ssl-fips-mode
flag in the sdb-admin create-node
and the sdb-admin register-node
commands, and via the ssl_fips_mode
cluster file property in the sdb-deploy setup-cluster
command--load-balanced
flag and the load_balanced
cluster file property to the sdb-deploy setup-cluster
command to allow clusters to be set up with high availability in the load_balanced
modeleafPairs
checker with a highAvailability
checker in the sdb-report
command that determines the fidelity of high-availability clusters in both paired
and load_balanced
modescpuHyperThreading
checker in the sdb-report
command to not report stderr when it only contains whitespace characters, which is considered emptysdb-admin enable-high-availability
command that would cause leaf nodes to be paired incorrectlysdb-report calibrate
command to calibrate a cluster’s performance against a benchmark using a variety of querieswhitespacesInObjectName
checker to the sdb-report
command to check for objects in the schema that have leading or trailing whitespaces in their names--temp-dir
flag to the sdb-report collect
and the sdb-report collect-and-check
commands to select a directory for storing temporary files on both remote and local hosts. The --remote-temp-dir
flag is now deprecated.sdb-admin configure-monitoring
command; the password can now be specified via the EXPORTER_PASSWORD
environmental variable in addition to the --exporter-password
flag--load-balanced
flag to the sdb-admin enable-high-availability
command to allow high availability to be enabled in the load_balanced
mode--mask-ip
flag in the sdb-report collect-kube
commandsdb-report check
command that would cause the duplicatePartitionDatabases
checker to return incorrect output in some casesImplementation
and LockfreeTimestamp
fields to the backup cachesdb-deploy setup-cluster
command to skip the root password prompt if each node has a password already setdmesg
collector in the sdb-report collect
command to also look for the dmesg
executable in /usr/bin
, /bin
, and /usr/local/bin
directoriesinformationSchemaProcesslist
collector in the sdb-report collect
command to mask user credentials in the outputleafAverageRoundtripLatency
checker in the sdb-report check
command to apply stricter criteria while detecting outlierssdb-admin list-backups
command that would cause a crashsdb-admin start-monitoring
command that would cause timestamps in the mv_events
table to be invalid--kerberos-realm
flag to the sdb-admin sync-ldap
command to override the Kerberos realm value, which is used to create new SQL users with the --auth-method kerberos
flagsdb-admin describe-host
command to display the memsqlctl path and the memsqlctl config path correctly for installations that are not tarball-basedinformationSchemaUserPrivileges
collector to no longer run during environment validationsdb-report collect --mask-ip
command that would cause an error when the command is run by a non-member of the memsql
groupsdb-report collect-kube
command to build a diagnostics report for a Kubernetes clustercgroupInfo
collector and the cgroupMemoryUsage
checker to the sdb-report
command to check if the memsqld process runs inside the memory cgroup and that memory usage is not too close to the limitsdb-deploy ui
commandmemsql-server
.tar
file as an installation target in the sdb-deploy ui
commandleafAverageRoundtripLatency
checker in the sdb-report check
command to pinpoint the nodes that have the longest round-trip latencysudo
sdb-deploy upgrade
commandroot
user directly and without using sudo
sdb-deploy setup-cluster
command to be less strict for the memsql
directory on each hostsdb-deploy upgrade
command from 1 minute to 15 minutesbash
and zsh
so that it will work with both memsql-*
and sdb-*
commandssdb-admin snapshot-database
command to create database snapshots--snapshot
to the sdb-admin restart-node
and the sdb-admin stop-node
commands to create snapshots of databases before restarting or stopping a nodememsqlctl.hcl
and the nodes.hcl
files to the output of the memsqlcltInfo
collectorServerVersion
and the MemoryUsage
fields to the backup cache--online
flag in the sdb-deploy upgrade
commandsudo
message in the Toolbox commandsdefaultWorkloadManagement
checker to be more consistentsdb-report collect --mask-ip
command that would cause an error when collecting report information for a stopped nodesdb-deploy setup-cluster
command when an environment validation fails due to different users owning data directories of a node--mask-ip
flag to the sdb-report collect
command to mask sensitive data in the report files, such as IP addresses, MAC addresses, usernames, and passwordsrole
column to the mv_nodes
table for population by the monitoring pipelinesdb-admin enable-nodes-autostart
command to enable nodes autostart on system rebootchronydStatus
and the partitionsStart
collectors in the sdb-report
command to be excluded by defaultanalyzeTable
collector in the sdb-report
commandconsistent_maximum_memory
checker from kilobytes (KB) to megabytes (MB)sdb-deploy setup-cluster
command that would sometimes place the memsqlctl.hcl
file in an incorrect foldersdb-toolbox-config state
, the sdb-deploy state
, the sdb-admin state
, and the sdb-report state
commands to display the Toolbox state from the toolbox-state.hcl
file--preinstalled-path
flag to the sdb-deploy install
, sdb-deploy cluster-in-a-box
, and the sdb-deploy setup-cluster
commands to specify the folder where a memsql-server
.tar
file has been extracted as an install targetnetwordBuffersMax
checker to the sdb-report
command to check that the wmem_max
and the rmem_max
values are at least 8MB--config-file
flag to the sdb-admin send-alert
command to specify a YAML file containing both the location and the thresholds as an alternative to using the --alert-location
and the --thresholds
flags--monitoring-version
flag to the sdb-admin start-monitoring
command to specify a memsql-server
version to pass to the memsql-exporter
--batch-interval
flag to the sdb-admin start-monitoring
command to specify a time interval between data extractions--sample-queries
and the --high-cardinality-metrics
flags to the sdb-admin start-monitoring
command to enable the collection of additional monitoring datasdb-admin start-monitoring
command to support features introduced in the SingleStore DB 7.3 version of the memsql-exporter
mallocActiveMemory
checker to fail if malloc_active_memory
is greater than 5GB (up from 2GB)diskUsage
and the diskInodesUsage
checkers in the sdb-report check
command to not report high usage on loopback filesystemssdb-report collect
command to not output a stack trace when a collection error is encounteredsdb-deploy upgrade
command that would sometimes cause aggregator actions to be displayed in an incorrect order during a dry runprocessFiles
collector to the sdb-report
command to collect all /proc/<pid>/*
files for the memsqld
and the memsqld_safe
processesautoAttach
checker to the sdb-report
command to warn if the auto_attach
engine variable is not set to ON
--preinstalled-path
flag to the sdb-deploy upgrade
command to specify the folder as an upgrade target where a memsql-server
.tar
file has been extractedsdb-deploy ui
command when registered hosts are detectedcgroupDisabled
checker and osRelease
collector to the sdb-report
command to check that cgroup memory
is disabled for Red Hat 7.x or latersdb-report send-alert
command to automatically run sdb-report collect-and-check
and alert on fails or warningssdb-report
commandsdb-admin change-root-password
commandsdb-admin change-root-password
commandsdb-admin start-monitoring
command when the exporter host is inaccessible from other hostssdb-report collect
and the sdb-deploy setup-cluster
commandsorchestratorProcesses
checker to include each process in the report only once, even if more than one instance of the process is running on the hostsdb-deploy setup-cluster
command to check that all of the nodes that will be registered have the correct file permissions and ownerschema
collector to include views definitions, and improved how functions, procedures, and error messages are displayedsdb-deploy setup-cluster
command to set the secure-file-priv
engine variable to a default path of <memsqlctl's-default-install-dir>/db_files
for each newly-created nodememsq-admin restart-node
command that would sometimes display an incorrect error messageclusterMemoryUsage
checker that would produce incorrect outputsdb-admin enable-high-availability
command that would sometimes cause a kernel panic if Toolbox is configured incorrectlysdb-admin
backup-related commands when the --repository
flag contains an invalid valuesdb-report check --validate-env
command would crash when a host has TarInstallDir defined and memsql-server
installedinstalledPermissions
checker and collector to the sdb-report
command to verify that cluster files and directories have the correct permissions--skip-validate-env
flag was ignored by the sdb-deploy setup-cluster
command--data-dir
flag to the sdb-deploy setup-cluster
command for specifying the absolute path to each node’s data directory (DataDir)sdb-deploy ui
command to support pre-deployment environmental checkssdb-admin restart-node --online
command to inform the user that relevant nodes must be running to perform the restartsdb-deploy upgrade
command that incorrectly determined that all columnstore tables could be safely upgradedsdb-admin sync-ldap
command to synchronize LDAP users and groups with SingleStore DB/MemSQL database userssdb-report collect
command that displays the number of collectors that will be executedsdb-admin query --row-timeout
command was not taken into account by the commandclusterMemoryUsage
checker to the sdb-report check
command to determine if there is at least 10% of unused memory left for each nodediskInodesUsage
checker to the sdb-report check
command to determine if there is at least 15% of unused disk inodes left on each hostdmesg -T
command was not executed while collecting reports with the sdb-report collect
commanddiskLatencyRead
checker to the sdb-report check
command to determine if the disk read latency is below the recommended threshold on each hostdiskLatencyWrite
checker to the sdb-report check
command to determine if the disk write latency is below the recommended threshold on each hostsdb-admin unregister-node
and memsqlctl unregister-node
commands to unregister nodes in ToolboxmajorPageFaults
checker and collector to the sdb-report
command to verify if the number of major page faults that the system generates per second is lower than a specific thresholdswapUsage
checker and collector to the sdb-report
command to verify if the swap usage is lower than a specific thresholdcpuIdle
checker and the cpuUtilization
collector to the sdb-report
command to verify if the percentage of time the CPUs have been idle is higher than a specific thresholdmemoryCommitted
checker and collector to the sdb-report
command to verify if the percentage of memory required for a given workload is less than a specific thresholdswapEnabled
checker to the sdb-report check
command to verify if the total swap memory is not less than 10% of the physical memoryvmSwappiness
checker to the sdb-report check
command that checks if the vm.swappiness
kernel setting is greater than 0
on each hostsdb-deploy setup-cluster
command--tar-install-dir
flag to the sdb-deploy cluster-in-a-box
commandmax_memory_settings
checker of the sdb-report check
command to accept a maximum memory use of 91%, up from 90%sdb-admin query
command to not require a password for the MemSQL root
usersdb-admin change-root-password
, sdb-admin create-node
, sdb-admin query
, and sdb-admin register-node
commands to prompt for a password only after all of the included flags have been verifiedsdb-deploy upgrade --precheck-only
commandsdb-report check
command where messages about unavailable checks were displayedsyncCnfVariables
checker in the sdb-report check
command would inadvertently return incorrect resultssdb-admin query
command that would ignore the --user
flagmemsqlctl
command where some commands that were run with the --timeout
flag would not exit after the specified timeout--include memsqlAuditlogs
flag to the sdb-report collect
command to collect audit logssdb-report check
command where maxMemorySettings
reported a failure when a host has more than 10GB of memory freeno_start: true
option to the node
section of a cluster configuration YAML file for use with the sdb-deploy setup-cluster
command--no-partition-change
flag to the sdb-admin optimize
command to skip any changes made to the default_partition_per_leaf
MemSQL variablesdb-admin enable-high-availability
command that would co-locate nodes on the same host that were in different availability groupssdb-deploy setup-cluster
command when duplicate hosts are found in the cluster configuration YAML file--json
flagsdb-deploy setup-cluster
command to display an error message when a node is specified with an incorrect availability group in the cluster configuration YAML filememsqlctl
commands was sometimes lostmemsqlctl
is an earlier version to verbose outputsdb-admin configure-monitoring
command that updates the monitoring configuration for the clustersdb-admin start-monitoring
and sdb-admin stop-monitoring
commands to start and stop the collection of monitoring datasdb-report collect-and-check
command that runs both collect and check reportssdb-deploy setup-cluser
command by pairing leaves of different hostssdb-admin enable-high-availability
command where nodes were assigned non-optimal availability groupssdb-deploy upgrade
command to report all precheck failuressdb-deploy setup-cluster
command to explain why a clean cluster is required before deploying MemSQLsyncCnfVariables
checker would crash in the sdb-report check
commandsdb-admin query
command where --password
was not correctly processedsdb-deploy upgrade
command to failbash
and zsh
tab completion to all Toolbox commandssdb-admin query
command where --password
was not correctly processedsdb-admin bootstrap-aggregator
, sdb-admin create-node
, sdb-admin set-license
, sdb-deploy cluster-in-a-box
, and sdb-deploy setup-cluster
commands to use the license from the MEMSQL_LICENSE environment variablesdb-deploy upgrade
would fail due to a replicating databasesdb-admin
backup-related commandssdb-deploy setup-cluster
command when a host without memsql-server
installed was already part of the clustermemsql.cnf
file manuallysudo
promptingsdb-deploy upgrade
command when using a tar file without specifying tar-install-dir
transparentHugepage
checker of the sdb-report check
command to not check defrag if THP is disabledattachRebalanceDelay
checker to the sdb-report check
command that verifies that attachRebalanceDelay is not set to 86400sdb-deploy upgrade
commandsdb-toolbox-config register-host
command to validate the --memsqlctl-path
value and added the--skip-validation
flag to skip this validationsdb-deploy upgrade
command to attempt to attach and detach a leaf under certain error conditions instead of proceeding to an offline upgradediskBandwidth
checker to the sdb-report check
command that checks disk read, write, and sync-read bandwidthinformationSchemaMvEvents
checker of the sdb-report check
command to order events by time--disable-spinner
flag to all Toolbox commands to disable the progress spinner, which some terminal sessions/environments may have issues withsdb-deploy setup-cluster
command to suppress an error if one or more hosts did not have memsqlctl
installedvalidLicense
checker of the sdb-report check
command to report in units for clusters with a unit-based license--base-install-dir
flag to the sdb-deploy setup-cluster
command which sets each node’s base install directory on all hostssdb-admin delete-backup
command to no longer error if a backup name is listed more than oncesdb-admin delete-node
, sdb-deploy uninstall
, and sdb-toolbox-config unregister-host
commandsconsistentMaxMemory
checker to the sdb-report check
command that confirms the maximum_memory
setting is consistent across all leaves and aggregatorssdb-deploy destroy-cluster
command that deletes all data, deletes all MemSQL nodes, and unregisters all hostssdb-admin delete-node
, sdb-deploy uninstall
, and sdb-toolbox-config unregister-host
commandssdb-deploy setup-cluster
command to accept the case-insensitive role of a node--all
flag to the sdb-admin describe-node
command to list the details for all nodes--precheck-only
flag to the sdb-deploy upgrade
command to check if a cluster is stable and an upgrade is possible without performing an upgradesdb-admin
command’s backup/restore functionality to search for a backup in a repository if one isn’t found in a cachesdb-deploy upgrade
command to compare the target upgrade version against the major version that is already installedsyncCnfVariables
checker of the sdb-report check
command to confirm that its value is equal to the runtime value in memsql-server
sdb-deploy ui
command fails to run--master-port
, --leaf-port
, and --bind-address
flags to the sdb-deploy cluster-in-a-box
commandsdb-deploy setup-cluster
commands to not allow SSH for localhostsdb-deploy upgrade
command fails when memsql-server 7.1 is already installed on a hostsudo
passwordsdb-deploy upgrade
command that confirms that the active memsql-server
package is the one for the target versionsdb-deploy setup-cluster
command to provide the same output with or without the --config-file
flagsdb-deploy upgrade
command--file-path
flag to the sdb-admin set-license
command to allow the license to be stored in, and read from, a filesdb-deploy
commands to prompt for which package manager to use if both deb
and rpm
package managers are installedsdb-deploy upgrade
command--skip-version-check
flag to the sdb-deploy upgrade
command that ignores the currently active memsql version and enables downgrading--role
, --license
, --user
, --user-password
, --availability-group
, and --force-master
flags to the sdb-admin create-node
command. Refer to the sdb-admin create-node reference page for more information.sdb-report
commandssdb-deploy setup-cluster
fails when run with the --cluster-file
flagsdb-deploy cluster-in-a-box
command to bind nodes to the address 127.0.0.1
instead of 0.0.0.0
sdb-deploy uninstall --all-versions
command to return a 0
exit code if there are no versions to uninstallsdb-deploy ui
command that runs a web UI to install MemSQL and deploy a clustersyncCnfVariables
checker to the sdb-report check
command that confirms that there are no sync variables values defined in the memsql.cnf
file on a hostsdb-deploy cluster-in-a-box
command to deduce the package format when the --file-path
flag is specified--force-package-format
flag to the sdb-deploy list-versions
command that lists the versions installed by the chosen package managersdb-deploy upgrade
displays an error message when attempting to upgrade to the MemSQL version that already installed and activated on the hostsdb-report check
command to display results only for checkers that have all needed data, and list those checkers that do notsdb-admin optimize
command to display a message when non-uniform memory allocations for leaves are foundsdb-admin put-file
command--password
flag to the sdb-deploy cluster-in-a-box
command that sets a password for the MemSQL root
usersdb-report check
command crashes when the orphanTables
checker does not find specific information in a reportsdb-report
command’s error message when it fails to detect whether memsqlctl
is installed on a hostsdb-report collect
commandfile
protocol for sdb-admin
backup functionality--force-package-format
flag to the sdb-deploy uninstall
command which will allow MemSQL to be uninstalled when there are both dpkg and rpm package managers found on a hostsdb-admin enable-high-availability
fails with MemSQL version below 7.0.6ANALYZE OPTIMIZER_STATE INTO OUTFILE
of the sdb-report collect
command to the collector’s section of the analyzeTables
reportsdb-report check
would issue a warning on a valid distributed_keepalive_timeout
valuesdb-deploy list-versions
command to display its output more quickly-vvv
to be more readable--remote-temp-dir
flag to the sdb-report collect
command that allows setting a directory for storing temporary files on a hostvalidLicense
check reports a failure on a valid licenseanalyzeTables
collector to sdb-report collect
that saves column and histograms recorded on each tablesdb-deploy setup-cluster --cluster-file
dmesg
collector with timestamps that users can recognize and interpretsdb-deploy upgrade
does not show an error if the final upgrade step failssdb-deploy upgrade
would hang if there were orphan databases--max-column-width
flag to the sdb-admin query
command that allows query output columns to be truncated to the specified number of characters--allow-duplicate-host-fingerprints
flag to sdb-deploy setup-cluster
and sdb-toolbox-config register-host
commands that allows hosts with identical SSH host keys to be added to the clustersdb-report collect
hangs when collecting reports from some hostscpuFreqPolicy
check reports a failure on a valid configurationchronydStatus
collector does not work for a host that does not have pgrep
maxOpenFiles
and filesystemType
checks from sdb-report check --validate-env
sdb-toolbox-config register-host
is run with --localhost
and --host 127.0.0.1
sdb-deploy upgrade
incorrectly estimates the disk space required to upgrade from MemSQL 6 to MemSQL 7sdb-admin delete-backup
faster by deleting multiple backups in parallelcpuMemoryBandwidth
collector and checker to sdb-report
that measures CPU-memory bandwidth on each host and confirms that both bandwidth and latency are within acceptable limits--include-performance
flag to sdb-report collect
and sdb-report check
that is required to run performance checks for a clustersdb-toolbox-config register-host
and sdb-deploy setup-cluster
commands are run with multiple localhostssdb-report collect
and sdb-report check
commands:
memsqld
processeschronyd
servicechronyd
is disabledulimit
checker reports FAIL
even when set correctly for the memsql
userregion
or endpoint_url
is missing in a backup commandsdb-report collect
fails if some node IDs could not be readsdb-deploy upgrade --online
fails to upgrade from MemSQL version 7.0.15sdb-admin create-backup
- backup one or more databases to a repositorysdb-admin delete-backup
- delete a backupsdb-admin list-backups
- list all the latest backupssdb-admin restore-backup
- restore a database from a backupsdb-admin summarize-backups
- print summary information for backupssdb-admin validate-backup
- verify that a backup is correctsdb-deploy setup-cluster
fails if the cluster configuration file contains skip_install:true
sdb-deploy setup-cluster
that prevents nodes from sharing the same folder on a host when specified in a cluster configuration file--online
flag for sdb-deploy upgrade
that runs online upgrade for MemSQL.sdb-deploy setup-cluster
when the path to the source file is incorrect.sdb-report collect
that saves the Toolbox’s configuration to a report file.sdb-report collect
that saves each host’s description to a report file.sdb-admin enable-high-availability
does not request the correct privilege.sdb-deploy upgrade
:
sdb-admin put-file
command that copies a file to the same path on all hosts.sdb-admin stop-node --all --force
did not stop any nodes if one node was unavailable.sdb-deploy upgrade
did not wait for the database to restart after an upgrade is finished.sdb-admin enable-high-availability
where the command does not work correctly if two leaf nodes on the same host have different hostnames.sdb-report
that ensures all cluster hosts have SSD drives.--validate-env
option to sdb-report
that will validate if MemSQL can be installed.sdb-deploy upgrade
waits for node recovery.sdb-toolbox-config
is not able to resolve a state file but returns incorrect error.sdb-deploy
downloaded the package twice for online upgrade.memsqlctl
client.--ssh-max-sessions
) or config file.sdb-deploy setup-cluster --cluster-file <cluster-file>
command returns nodes with Unknown role.--parallelism
flag.sdb-deploy upgrade
without any flags would perform a rolling restart on the cluster.sdb-deploy
to support upgrade to MemSQL 7.0sdb-report check
fails to check for blocked queries with time 0.sdb-admin update-config --set-global
to automatically run on the Master Aggregator.securityLimits
collector to include the output of /etc/security/limits.d
and /proc/PID/limits
numactl
checker to check if the sum of numa node memory capacity exceeds machine memory capacity.sdb-report collect
:
top
informationSchemaMvBackupHistory
sdb-report check
:
orphanTables
sdb-deploy setup-cluster
to accept a YAML file with cluster configurations.sdb-report
exits with a status of 0 if it fails.sdb-report collect
to be not parsable by sdb-report check
sdb-report collect
:
uptime
shutdownTime
rebootTime
sdb-report check
:
tracelogOOM
tracelogOOD
explainRebalancePartitionsChecker
longRunningQueries
detectCrashStackTraces
defaultVariables
defaultKeepaliveSettings
and defaultHeartbeatSettings
to be part of defaultVariables
checker--role
flag to sdb-admin start-node
to start the nodes by role.--role
flag to sdb-admin stop-node
to stop the nodes by role.Bind Address
column to sdb-admin list-nodes
output.sdb-admin delete-node
to remove leaves and child aggregators from the cluster before deleting them.sdb-admin list-nodes
to be consistent with other commands.License Expiration
field in sdb-admin show-license
.schema
collector in sdb-report collect
to not collect procedures from memsql-server version 6.7.11 and above.sdb-report collect
:
explainRestoreRedundancy
explainRebalancePartitions
showClusterStatus
sdb-report check
:
delayedThreadLaunches
--stop
flag to sdb-admin delete-node
to stop the nodes before deleting them.--host
, --port
, --user
, and --password
flags to sdb-admin query
for querying a node directly.disconnectedReplicationSlaves
interpreterMode
leafAverageRoundtripLatency
runningBackup
secondaryDatabases
validLicense
blockedQueries
also looks for sleeping threads with open transactionsofflineLeaves
renamed to leavesNotOnline
sdb-admin query
command.sdb-admin list-nodes
and sdb-admin describe-node
.swappiness
checker. The setting it checked is not required by MemSQL 6.7.informationSchemaPipelines
collector to include information_schema.PIPELINES_CURSORS
and information_schema.PIPELINES_FILES
.sdb-report collect
:
explainOrphanDatabases
informationSchemaMvQueries
licenseMetadata
sdb-report check
:
defaultHeartbeatSettings
defaultKeepaliveSettings
defaultWorkloadManagement
defunctProcesses
duplicatePartitionDatabase
failedCodegen
offlineAggregators
offlineLeaves
pendingDatabases
queuedQueries
userDatabaseRedundancy
versionHashes
env
commands to include the resolved configFile
location.sdb-deploy cluster-in-a-box
to set passwords that are required by memsqlctl create-node
starting in MemSQL 6.7.8.sdb-admin create-node
now requires the --password
flag.--base-install-dir
flag to sdb-admin create-node
.sdb-report collect --only
to also include the memsqlctlInfo
collector by default.sdb-deploy setup-cluster
that prevents enabling High Availability with an odd number of leaves.--skip-disk-check
flag to sdb-admin enable-high-availability
.sdb-admin register-node
.sdb-deploy install
that improperly failed the installation if it was unable to add the target user to the memsql
Linux group.sdb-report collect-local
.sdb-report check
when memsqlctl
is not installed on the target hosts.sdb-admin change-root-password
.sdb-toolbox-config register-host
.sdb-report collect
.sdb-report collect
and sdb-report collect-local
.sdb-admin
confirmation messages that incorrectly implied the use of --password
when it was not used.sdb-admin update-config --all
.sdb-admin describe-node
output.sdb-deploy list-versions
when there are no hosts registered.memsqlctl
configuration to determine the correct user and group for remote commands.