Manage InfluxDB Enterprise clusters
InfluxDB Enterprise includes two utilities for interacting with and managing your clusters.
The influxd-ctl utility provides commands
for managing your InfluxDB Enterprise clusters.
The influx command line interface is used
for interacting with and managing your data.
Content
influxd-ctl cluster management utility
influx command line interface (CLI)
influxd-ctl cluster management utility
Use the influxd-ctl cluster management utility to manage your cluster nodes, back up and restore data, and rebalance clusters.
The influxd-ctl utility is available on all meta nodes.
Syntax
influxd-ctl [ global-options ] <command> [ arguments ]
Global options
Optional arguments are in brackets.
[ -auth-type [ none | basic | jwt ] ]
Specify the type of authentication to use. Default value is none.
[ -bind <hostname>:<port> ]
Specify the bind HTTP address of a meta node to connect to. Default value is localhost:8091.
[ -bind-tls ]
Use TLS. If you have enabled HTTPS, you MUST use this argument in order to connect to the meta node.
[ -config '<path-to-configuration-file> ]'
Specify the path to the configuration file.
[ -pwd <password> ]
Specify the user’s password. This argument is ignored if -auth-type basic isn’t specified.
[ -k ]
Skip certificate verification; use this argument with a self-signed certificate. -k is ignored if -bind-tls isn’t specified.
[ -secret <JWT-shared-secret> ]
Specify the JSON Web Token (JWT) shared secret. This argument is ignored if -auth-type jwt isn’t specified.
[ -user <username> ]
Specify the user’s username. This argument is ignored if -auth-type basic isn’t specified.
Examples
The following examples use the influxd-ctl utility’s show option.
Bind to a remote meta node
influxd-ctl -bind meta-node-02:8091 show
The influxd-ctl utility binds to the meta node with the hostname meta-node-02 at port 8091.
By default, the tool binds to the meta node with the hostname localhost at port 8091.
Authenticate with JWT
influxd-ctl -auth-type jwt -secret oatclusters show
The influxd-ctl utility uses JWT authentication with the shared secret oatclusters.
If authentication is enabled in the cluster’s meta node configuration files and data node configuration files and the influxd-ctl command does not include authentication details, the system returns:
Error: unable to parse authentication credentials.
If authentication is enabled and the influxd-ctl command provides the incorrect shared secret, the system returns:
Error: signature is invalid.
Authenticate with basic authentication
To authenticate a user with basic authentication, use the -auth-type basic option on the influxd-ctl utility, with the -user and -password options.
In the following example, the influxd-ctl utility uses basic authentication for a cluster user.
influxd-ctl -auth-type basic -user admini -pwd mouse show
If authentication is enabled in the cluster’s meta node configuration files and data node configuration files and the influxd-ctl command does not include authentication details, the system returns:
Error: unable to parse authentication credentials.
If authentication is enabled and the influxd-ctl command provides the incorrect username or password, the system returns:
Error: authorization failed.
Commands
add-data
Adds a data node to a cluster.
By default, influxd-ctl adds the specified data node to the local meta node’s cluster.
Use add-data instead of the join argument when performing a production installation of an InfluxDB Enterprise cluster.
Syntax
add-data <data-node-TCP-bind-address>
Resources: Production installation
Examples
Add a data node to a cluster using the local meta node
In the following example, the add-data command contacts the local meta node running at localhost:8091 and adds a data node to that meta node’s cluster.
The data node has the hostname cluster-data-node and runs on port 8088.
$ influxd-ctl add-data cluster-data-node:8088
Added data node 3 at cluster-data-node:8088
Add a data node to a cluster using a remote meta node
In the following example, the command contacts the meta node running at cluster-meta-node-01:8091 and adds a data node to that meta node’s cluster.
The data node has the hostname cluster-data-node and runs on port 8088.
$ influxd-ctl -bind cluster-meta-node-01:8091 add-data cluster-data-node:8088
Added data node 3 at cluster-data-node:8088
add-meta
Adds a meta node to a cluster.
By default, influxd-ctl adds the specified meta node to the local meta node’s cluster.
Use add-meta instead of the join argument when performing a Production Installation of an InfluxDB Enterprise cluster.
Resources: Production installation
Syntax
influxd-ctl add-meta <meta-node-HTTP-bind-address>
Examples
Add a meta node to a cluster using the local meta node
In the following example, the add-meta command contacts the local meta node running at localhost:8091 and adds a meta node to that local meta node’s cluster.
The added meta node has the hostname cluster-meta-node-03 and runs on port 8091.
$ influxd-ctl add-meta cluster-meta-node-03:8091
Added meta node 3 at cluster-meta-node:8091
Add a meta node to a cluster using a remote meta node**
In the following example, the add-meta command contacts the meta node running at cluster-meta-node-01:8091 and adds a meta node to that meta node’s cluster.
The added meta node has the hostname cluster-meta-node-03 and runs on port 8091.
$ influxd-ctl -bind cluster-meta-node-01:8091 add-meta cluster-meta-node-03:8091
Added meta node 3 at cluster-meta-node-03:8091
backup
Creates a backup of a cluster’s metastore
and shard data at that point in time
and stores the copy in the specified directory.
To back up only the cluster metastore, use the -strategy flag with the only-meta option.
Backups are incremental by default; they create a copy of the metastore and shard
data that have changed since the previous incremental backup.
If there are no existing incremental backups, the system automatically performs a complete backup.
Syntax
influxd-ctl backup [ -db <database> | -from <data-node-TCP-bind-address> | -full | -rp <retention-policy> | -shard <shard-id> | -strategy <only-meta|incremental|full|> ] <backup-directory>
Arguments
Optional arguments are in brackets.
[ -db <db_name> ]
Name of the single database to back up.
[ -from <data-node-TCP-address> ]
TCP address of the target data node.
[ -full ]
Perform a full backup.
[ -rp <rp_name> ]
Name of the single retention policy to back up (requires the -db flag).
[ -shard <shard_ID> ]
Identifier of the shard to back up.
Restoring a
-fullbackup and restoring an incremental backup require different syntax. To prevent issues withrestore, keep-fullbackups and incremental backups in separate directories.
[ -strategy ]
Specify the type of back up to perform:
only-metaback up metastore data only, including users, roles, databases, continuous queries, and retention policies. This option does not back up shards.fullback up metastore and shard dataincrementalback up metastore and shard data that have changed since the last incremental backup. If there are no existing incremental backups, the system automatically performs a full backup.
Resources: Back up and restore InfluxDB Enterprise
Examples
Perform an incremental backup
In the following example, the command performs an incremental backup and stores it in the current directory. If there are any existing backups the current directory, the system performs an incremental backup. If there aren’t any existing backups in the current directory, the system performs a complete backup of the cluster.
influxd-ctl backup .
Output
Backing up meta data... Done. 421 bytes transferred
Backing up node cluster-data-node:8088, db telegraf, rp autogen, shard 4... Done. Backed up in 903.539567ms, 307712 bytes transferred
Backing up node cluster-data-node:8088, db _internal, rp monitor, shard 1... Done. Backed up in 138.694402ms, 53760 bytes transferred
Backing up node cluster-data-node:8088, db _internal, rp monitor, shard 2... Done. Backed up in 101.791148ms, 40448 bytes transferred
Backing up node cluster-data-node:8088, db _internal, rp monitor, shard 3... Done. Backed up in 144.477159ms, 39424 bytes transferred
Backed up to . in 1.293710883s, transferred 441765 bytes
$ ls
20160803T222310Z.manifest 20160803T222310Z.s1.tar.gz 20160803T222310Z.s3.tar.gz
20160803T222310Z.meta 20160803T222310Z.s2.tar.gz 20160803T222310Z.s4.tar.gz
Perform a full backup
In the following example, the backup command performs a full backup of the cluster and stores the backup in the existing directory backup_dir.
influxd-ctl backup -full backup_dir
Output
Backing up meta data... Done. 481 bytes transferred
Backing up node cluster-data-node:8088, db _internal, rp monitor, shard 1... Done. Backed up in 33.207375ms, 238080 bytes transferred
Backing up node cluster-data-node:8088, db telegraf, rp autogen, shard 2... Done. Backed up in 15.184391ms, 95232 bytes transferred
Backed up to backup_dir in 51.388233ms, transferred 333793 bytes
~# ls backup_dir
20170130T184058Z.manifest
20170130T184058Z.meta
20170130T184058Z.s1.tar.gz
20170130T184058Z.s2.tar.gz
copy-shard
Copies a shard from a source data node to a destination data node.
Syntax
influxd-ctl copy-shard <data-node-source-TCP-address> <data-node-destination-TCP-address> <shard-id>
Resources: Rebalance InfluxDB Enterprise clusters
Examples
Copy a shard from one data node to another data node
In the following example, the copy-shard command copies the shard with the id 22 from the data node running at cluster-data-node-01:8088 to the data node running at cluster-data-node-02:8088.
$ influxd-ctl copy-shard cluster-data-node-01:8088 cluster-data-node-02:8088 22
Copied shard 22 from cluster-data-node-01:8088 to cluster-data-node-02:8088
copy-shard-status
Shows all in-progress copy shard operations, including the shard’s source node, destination node, database, retention policy, shard ID, total size, current size, and the operation’s start time.
Syntax
influxd-ctl copy-shard-status
Examples
Display all in-progress copy-shard operations
In this example, the copy-shard-status command returns one in-progress copy-shard operation.
The system is copying shard 34 from cluster-data-node-02:8088 to cluster-data-node-03:8088.
Shard 34 is associated with the telegraf database and the autogen retention policy.
The TotalSize and CurrentSize columns are reported in bytes.
influxd-ctl copy-shard-status
Source Dest Database Policy ShardID TotalSize CurrentSize StartedAt
cluster-data-node-02:8088 cluster-data-node-03:8088 telegraf autogen 34 119624324 119624324 2017-06-22 23:45:09.470696179 +0000 UTC
entropy
Manage entropy and the anti-entropy process among shards in a cluster. It includes the following subcommands:
show
Lists shards that are in an inconsistent state and in need of repair as well as
shards currently in the repair queue.
repair
Queues a shard for repair.
It requires a Shard ID which is provided in the influxd-ctl entropy show output.
kill-repair
Removes a shard from the repair queue.
It requires a Shard ID which is provided in the influxd-ctl entropy show output.
Syntax
influxd-ctl entropy <subcommand> [<arguments>]
Examples
Display all shards with entropy
In this example, the entropy show command returns all shards with detected entropy.
$ influxd-ctl entropy show
Entropy
==========
ID Database Retention Policy Start End Expires Status
21179 statsdb 1hour 2017-10-09 00:00:00 +0000 UTC 2017-10-16 00:00:00 +0000 UTC 2018-10-22 00:00:00 +0000 UTC diff
25165 statsdb 1hour 2017-11-20 00:00:00 +0000 UTC 2017-11-27 00:00:00 +0000 UTC 2018-12-03 00:00:00 +0000 UTC diff
Add a shard with entropy to the repair queue
In this example, the entropy repair command adds a shard with detected entropy to the repair queue.
The repair subcommand requires a Shard ID, which can be obtained from the influxd-ctl entropy show output.
influxd-ctl entropy repair 21179
Repair Shard 21179 queued
Remove a shard in the repair queue
In this example, the entropy kill-repair command removes a shard from the repair queue.
The kill-repair subcommand requires a Shard ID, which can be obtained from the influxd-ctl entropy show output.
influxd-ctl entropy kill-repair 21179
Shard 21179 removed from repair queue
This only applies to shards in the repair queue. It does not cancel repairs on nodes that are in the process of being repaired. Once a repair has started, requests to cancel it are ignored.
join
Joins a meta node and/or data node to a cluster.
By default, influxd-ctl joins the local meta node and/or data node into a new cluster.
Syntax
influxd-ctl join [-v] <meta-node-HTTP-bind-address>
Arguments
Optional arguments are in brackets.
[ -v ]
Print verbose information about the join.
<meta-node-HTTP-bind-address>
Address of a meta node in an existing cluster. Use this argument to add the un-joined meta node and/or data node to an existing cluster.
Examples
Join a meta and data node into a cluster
In this example, the join command joins the meta node running at cluster-node-03:8091 and the data node running at cluster-node-03:8088 into a new cluster.
$ influxd-ctl join
Joining meta node at localhost:8091
Searching for meta node on cluster-node-03:8091...
Searching for data node on cluster-node-03:8088...
Successfully created cluster
* Added meta node 1 at cluster-node-03:8091
* Added data node 2 at cluster-node-03:8088
To join additional nodes to this cluster, run the following command:
influxd-ctl join cluster-node-03:8091
Join a meta and data node to an existing cluster
The command joins the meta node running at cluster-node-03:8091 and the data node running at cluster-node-03:8088 to an existing cluster.
The existing cluster includes the meta node running at cluster-meta-node-02:8091.
$ influxd-ctl join cluster-meta-node-02:8091
Joining meta node at cluster-meta-node-02:8091
Searching for meta node on cluster-node-03:8091...
Searching for data node on cluster-node-03:8088...
Successfully joined cluster
* Added meta node 3 at cluster-node-03:8091
* Added data node 4 at cluster-node-03:8088
Join a meta node to an existing cluster
The command joins the meta node running at cluster-meta-node-03:8091 to an existing cluster.
The existing cluster includes the meta node running at cluster-meta-node-02:8091.
The system doesn’t join a data node to the cluster because it doesn’t find a data node at cluster-meta-node-03:8088.
$ influxd-ctl join cluster-meta-node-02:8091
Joining meta node at cluster-meta-node-02:8091
Searching for meta node on cluster-meta-node-03:8091...
Searching for data node on cluster-meta-node-03:8088...
Successfully joined cluster
* Added meta node 18 at cluster-meta-node-03:8091
* No data node added. Run with -v to see more information
Join a meta node to an existing cluster and show detailed information about the join
The command joins the meta node running at cluster-meta-node-03:8091 to an existing cluster.
The existing cluster includes the meta node running at cluster-meta-node-02:8091.
The -v argument prints detailed information about the join.
$ influxd-ctl join -v meta-node-02:8091
Joining meta node at meta-node-02:8091
Searching for meta node on meta-node-03:8091...
Searching for data node on data-node-03:8088...
No data node found on data-node-03:8091!
If a data node is running on this host,
you may need to add it manually using the following command:
influxd-ctl -bind meta-node-02:8091 add-data <dataAddr:port>
Common problems:
* The influxd process is using a non-standard port (default 8088).
* The influxd process is not running. Check the logs for startup errors.
Successfully joined cluster
* Added meta node 18 at meta-node-03:8091
* No data node added. Run with -v to see more information
kill-copy-shard
Aborts an in-progress copy-shard command.
Syntax
influxd-ctl kill-copy-shard <data-node-source-TCP-address> <data-node-destination-TCP-address> <shard-ID>
Examples
Stop an in-progress copy-shard command
In this example, the kill-copy-shard command aborts the copy-shard command that was copying shard 39 from cluster-data-node-02:8088 to cluster-data-node-03:8088.
$ influxd-ctl kill-copy-shard cluster-data-node-02:8088 cluster-data-node-03:8088 39
Killed shard copy 39 from cluster-data-node-02:8088 to cluster-data-node-03:8088
leave
Removes a meta node and/or data node from the cluster.
The leave argument is destructive; it erases all metastore information from meta nodes and all data from data nodes.
Use leave only if you want to permanently remove a node from a cluster.
Syntax
influxd-ctl leave [-y]
Arguments
Optional arguments are in brackets.
[ -y ]
Assume yes (y) to all prompts.
Examples
Remove a meta and data node from a cluster
In this example, the leave command removes the meta node running at cluster-node-03:8091 and the data node running at cluster-node-03:8088 from an existing cluster.
Here, we respond yes (y) to the two prompts that ask if we’d like to remove the data node and if we’d like to remove the meta node from the cluster.
$ influxd-ctl leave
Searching for data node on cluster-node-03:8088...
Remove data node cluster-node-03:8088 from the cluster [y/N]: y
Removed cluster-node-03:8088 from the cluster
Searching for meta node on cluster-node-03:8091...
Remove meta node cluster-node-03:8091 from the cluster [y/N]: y
Successfully left cluster
* Removed data node cluster-node-03:8088 from cluster
* Removed meta node cluster-node-03:8091 from cluster
Remove a meta and data node from a cluster and assume yes to all prompts
In this example, the leave command removes the meta node running at cluster-node-03:8091 and the data node running at cluster-node-03:8088 from an existing cluster.
Because we specify the -y flag, the system assumes that we’d like to remove both the data node and meta node from the cluster and does not prompt us for responses.
$ influxd-ctl leave -y
Searching for data node on cluster-node-03:8088...
Removed cluster-node-03:8088 from the cluster
Searching for meta node on cluster-node-03:8091...
Successfully left cluster
* Removed data node cluster-node-03:8088 from cluster
* Removed meta node cluster-node-03:8091 from cluster
Remove a meta node from a cluster
In this example, the leave command removes the meta node running at cluster-meta-node-03:8091 from an existing cluster.
The system doesn’t remove a data node from the cluster because it doesn’t find a data node running at cluster-meta-node-03:8088.
$ influxd-ctl leave
Searching for data node on cluster-meta-node-03:8088...
* No data node found.
Searching for meta node on cluster-meta-node-03:8091...
Remove meta node cluster-meta-node-03:8091 from the cluster [y/N]: y
Successfully left cluster
* No data node removed from cluster
* Removed meta node cluster-meta-node-03:8091 from cluster
remove-data
Removes a data node from a cluster.
Use remove-data instead of the leave argument if you set up your InfluxDB Enterprise cluster with the Production Installation process.
The remove-data argument is destructive; it erases all data from the specified data node.
Use remove-data only if you want to permanently remove a data node from a cluster.
Syntax
influxd-ctl remove-data [ -force ] <data-node-TCP-bind-address>
Arguments
Optional arguments are in brackets.
[ -force ]
Forces the removal of the data node.
Use -force if the data node process is not running.
Examples
Remove a data node from a cluster
In this example, the remove-data command removes a data node running at cluster-data-node-03:8088 from an existing cluster.
$ influxd-ctl remove-data cluster-data-node-03:8088
Removed data node at cluster-data-node-03:8088
remove-meta
Removes a meta node from the cluster.
Use remove-meta instead of the leave command if you set up your InfluxDB Enterprise cluster with the Production Installation process.
The remove-meta argument is destructive; it erases all metastore information from the specified meta node.
Use remove-meta only if you want to permanently remove a meta node from a cluster.
Syntax
influxd-ctl remove-meta [ -force | -tcpAddr <meta-node-TCP-bind_address> | -y ] <meta-node-HTTP-bind-address>
Arguments
Optional arguments are in brackets.
[ -force ]
Forces the removal of the meta node.
Use -force if the meta node process if not running, and the node is not reachable and unrecoverable.
If a meta node restarts after being -force removed, it may interfere with the cluster.
This argument requires the -tcpAddr argument.
[ -tcpAddr <meta-node-TCP-bind_address> ]
The TCP address of the meta node to remove from the cluster.
Use this argument with the -force argument.
[ -y ]
Assumes Yes to all prompts.
Examples
Remove a meta node from a cluster
In this example, the remove-meta command removes the meta node at cluster-meta-node-02:8091 from an existing cluster.
In the example, we respond yes (y) to the prompt that asks if we’d like to remove the meta node from the cluster.
$ influxd-ctl remove-meta cluster-meta-node-02:8091
Remove cluster-meta-node-02:8091 from the cluster [y/N]: y
Removed meta node at cluster-meta-node-02:8091
Forcefully remove an unresponsive meta node from a cluster
In this example, the remove-data command forcefully removes the meta node running at the TCP address cluster-meta-node-02:8089 and HTTP address cluster-meta-node-02:8091 from the cluster.
In the example, we respond yes (y) to the prompt that asks if we’d like to force remove the meta node from the cluster.
Note that if the meta node at cluster-meta-node-02:8091 restarts, it may interfere with the cluster.
Only perform a force removal of a meta node if the node is not reachable and unrecoverable.
$ influxd-ctl remove-meta -force -tcpAddr cluster-meta-node-02:8089 cluster-meta-node-02:8091
Force remove cluster-meta-node-02:8091 from the cluster [y/N]:y
Removed meta node at cluster-meta-node-02:8091
remove-shard
Removes a shard from a data node. Removing a shard is an irrecoverable, destructive action; please be cautious with this command.
Syntax
influxd-ctl remove-shard <data-node-source-TCP-address> <shard-id>
Resources: Rebalance cluster
Examples
Remove a shard from a running data node
In this example, the remove-shard command removes shard 31 from the data node running at cluster-data-node-02:8088.
$ influxd-ctl remove-shard cluster-data-node-02:8088 31
Removed shard 31 from cluster-data-node-02:8088
restore
Restore a backup to an existing cluster or a new cluster.
Note: The existing cluster must contain no data in the databases affected by the restore.
Restore supports both full, incremental, and metadata-only backups. The syntax for restoring full backups differs from the syntax for restoring incremental and metadata backups.
Syntax
influxd-ctl restore [ -db <db_name> | -full | -list | -newdb <newdb_name> | -newrf <newrf_integer> | -newrp <newrp_name> | -rp <rp_name> | shard <shard_ID> ] ( <path-to-backup-manifest-file> | <path-to-backup-directory> )
To restore from a full backup, include the -full argument and provide
the path to the backup manifest (/path/to/backups/backup.manifest).
To restore from an incremental or metadata backup, provide the path to the directory
that contains the backup files (/path/to/backups).
Arguments
Optional arguments are in brackets.
[ -db <db_name> ]
Name of the single database to restore.
[ -full ]
Restore a backup that was created with the -full flag.
A restore command with the -full flag requires the path-to-backup-manifest-file.
Restoring from a full backup does not restore metadata. To restore metadata, restore a metadata backup separately.
[ -list ]
Show the contents of the backup.
[ -newdb <newdb_name> ]
Name of the new database to restore to (must specify with -db).
[ -newrf <newrf_integer> ]
Integer of the new replication factor to restore to (this is capped to the number of data nodes in the cluster).
[ -newrp <newrp_name> ]
Name of the new retention policy to restore to (must specify with -rp).
[ -rp <rp_name> ]
Name of the single retention policy to restore.
[ -shard <shard_ID> ]
Identifier of the shard to restore.
Resources: Backing up and restoring in InfluxDB Enterprise
Examples
Restore from an incremental backup
In this example, the restore command restores an incremental backup stored in the my-incremental-backup/ directory.
$ influxd-ctl restore my-incremental-backup/
Using backup directory: my-incremental-backup/
Using meta backup: 20170130T231333Z.meta
Restoring meta data... Done. Restored in 21.373019ms, 1 shards mapped
Restoring db telegraf, rp autogen, shard 2 to shard 2...
Copying data to <hostname>:8088... Copying data to <hostname>:8088... Done. Restored shard 2 into shard 2 in 61.046571ms, 588800 bytes transferred
Restored from my-incremental-backup/ in 83.892591ms, transferred 588800 bytes
Restore from a metadata backup
In this example, the restore command restores an metadata backup stored
in the metadata-backup/ directory.
$ influxd-ctl restore metadata-backup/
Using backup directory: metadata-backup/
Using meta backup: 20200101T000000Z.meta
Restoring meta data... Done. Restored in 21.373019ms, 1 shards mapped
Restored from my-incremental-backup/ in 19.2311ms, transferred 588 bytes
Restore from a full backup
In this example, the restore command is used to restore a full backup that includes the manifest file at my-full-backup/20170131T020341Z.manifest.
$ influxd-ctl restore -full my-full-backup/20170131T020341Z.manifest
Using manifest: my-full-backup/20170131T020341Z.manifest
Restoring meta data... Done. Restored in 9.585639ms, 1 shards mapped
Restoring db telegraf, rp autogen, shard 2 to shard 2...
Copying data to <hostname>:8088... Copying data to <hostname>:8088... Done. Restored shard 2 into shard 2 in 48.095082ms, 569344 bytes transferred
Restored from my-full-backup in 58.58301ms, transferred 569344 bytes
show
Shows all meta nodes and data nodes that are part of the cluster. The output includes the InfluxDB Enterprise version number.
Syntax
influxd-ctl show
Examples
Show all meta and data nodes in a cluster
In this example, the show command output displays that the cluster includes three meta nodes and two data nodes.
Every node is using InfluxDB Enterprise 1.3.x-c1.3.x.
$ influxd-ctl show
Data Nodes
==========
ID TCP Address Version
2 cluster-node-01:8088 1.3.x-c1.3.x
4 cluster-node-02:8088 1.3.x-c1.3.x
Meta Nodes
==========
TCP Address Version
cluster-node-01:8091 1.3.x-c1.3.x
cluster-node-02:8091 1.3.x-c1.3.x
cluster-node-03:8091 1.3.x-c1.3.x
show-shards
Outputs details about existing shards of the cluster, including shard ID, database, retention policy, desired replicas, shard group, starting timestamp, ending timestamp, expiration timestamp, and data node owners.
Syntax
influxd-ctl show-shards
Examples
Show the existing shards in a cluster
In this example, the show-shards output shows that there are two shards in the cluster.
The first shard has an id of 51 and it’s in the telegraf database and the autogen retention policy.
The desired number of copies for shard 51 is 2 and it belongs to shard group 37.
The data in shard 51 cover the time range between 2017-03-13T00:00:00Z and 2017-03-20T00:00:00Z, and the shard has no expiry time; telegraf’s autogen retention policy has an infinite duration so the system never removes shard 51.
Finally, shard 51 appears on two data nodes: cluster-data-node-01:8088 and cluster-data-node-03:8088.
$ influxd-ctl show-shards
Shards
==========
ID Database Retention Policy Desired Replicas Shard Group Start End Expires Owners
51 telegraf autogen 2 37 2017-03-13T00:00:00Z 2017-03-20T00:00:00Z [{26 cluster-data-node-01:8088} {33 cluster-data-node-03:8088}]
52 telegraf autogen 2 37 2017-03-13T00:00:00Z 2017-03-20T00:00:00Z [{5 cluster-data-node-02:8088} {26 cluster-data-node-01:8088}]
Use the verbose flag to view more shard owner detail
Use the verbose flag to show more detail about each shard owner, including the state (hot/cold), last modified date and time, and size on disk.
$ influxd-ctl show-shards -v
Shards
==========
ID Database Retention Policy Desired Replicas Shard Group Start End Expires Owners
1 telegraf autogen 2 1 2020-04-27T00:00:00Z 2020-05-04T00:00:00Z [{4 localhost:8188 hot 2020-04-28 13:59:50.022558549 -0400 EDT 1784222 <nil>} {5 localhost:8288 hot 2020-04-28 13:59:50.02605612 -0400 EDT 1785568 <nil>}]
2 stress autogen 2 2 2020-04-27T00:00:00Z 2020-05-04T00:00:00Z [{4 localhost:8188 hot 2020-04-28 13:50:57.076073713 -0400 EDT 102637693 <nil>} {5 localhost:8288 hot 2020-04-28 13:50:57.136074013 -0400 EDT 102915477 <nil>}]
3 _internal monitor 1 3 2020-04-28T00:00:00Z 2020-04-29T00:00:00Z 2020-05-06T00:00:00Z [{5 localhost:8288 hot 2020-04-28 13:59:50.017341511 -0400 EDT 627431 <nil>}]
4 _internal monitor 1 3 2020-04-28T00:00:00Z 2020-04-29T00:00:00Z 2020-05-06T00:00:00Z [{4 localhost:8188 hot 2020-04-28 13:59:50.01737255 -0400 EDT 1014827 <nil>}]
Use the verbose flag in a curl request
curl -X GET 'localhost:8191/show-shards?verbose=true' | jq .
Sample output:
[
{
"id": "1",
"database": "telegraf",
"retention-policy": "autogen",
"replica-n": 2,
"shard-group-id": "1",
"start-time": "2020-04-27T00:00:00Z",
"end-time": "2020-05-04T00:00:00Z",
"expire-time": "0001-01-01T00:00:00Z",
"truncated-at": "0001-01-01T00:00:00Z",
"owners": [
{
"id": "4",
"tcpAddr": "localhost:8188",
"state": "hot",
"last-modified": "2020-04-28T14:01:50.026425382-04:00",
"size": 1949209,
"err": null
},
{
"id": "5",
"tcpAddr": "localhost:8288",
"state": "hot",
"last-modified": "2020-04-28T14:01:50.028726299-04:00",
"size": 1950785,
"err": null
}
]
},
{
"id": "2",
"database": "stress",
"retention-policy": "autogen",
"replica-n": 2,
"shard-group-id": "2",
"start-time": "2020-04-27T00:00:00Z",
"end-time": "2020-05-04T00:00:00Z",
"expire-time": "0001-01-01T00:00:00Z",
"truncated-at": "0001-01-01T00:00:00Z",
"owners": [
{
"id": "4",
"tcpAddr": "localhost:8188",
"state": "hot",
"last-modified": "2020-04-28T13:50:57.076073713-04:00",
"size": 102637693,
"err": null
},
{
"id": "5",
"tcpAddr": "localhost:8288",
"state": "hot",
"last-modified": "2020-04-28T13:50:57.136074013-04:00",
"size": 102915477,
"err": null
}
]
},
{
"id": "3",
"database": "_internal",
"retention-policy": "monitor",
"replica-n": 1,
"shard-group-id": "3",
"start-time": "2020-04-28T00:00:00Z",
"end-time": "2020-04-29T00:00:00Z",
"expire-time": "2020-05-06T00:00:00Z",
"truncated-at": "0001-01-01T00:00:00Z",
"owners": [
{
"id": "5",
"tcpAddr": "localhost:8288",
"state": "hot",
"last-modified": "2020-04-28T14:01:50.023569927-04:00",
"size": 690633,
"err": null
}
]
},
{
"id": "4",
"database": "_internal",
"retention-policy": "monitor",
"replica-n": 1,
"shard-group-id": "3",
"start-time": "2020-04-28T00:00:00Z",
"end-time": "2020-04-29T00:00:00Z",
"expire-time": "2020-05-06T00:00:00Z",
"truncated-at": "0001-01-01T00:00:00Z",
"owners": [
{
"id": "4",
"tcpAddr": "localhost:8188",
"state": "hot",
"last-modified": "2020-04-28T14:01:50.022177797-04:00",
"size": 1117271,
"err": null
}
]
}
]
update-data
Updates a data node’s address in the meta store.
Syntax
influxd-ctl update-data <data-node-old-TCP-bind-address> <data-node-new-TCP-bind-address>
Examples
Update a data node hostname
In this example, the update-data command updates the address for data node 26 from cluster-node-01:8088 to cluster-data-node-01:8088.
$ influxd-ctl update-data cluster-node-01:8088 cluster-data-node-01:8088
updated data node 26 to cluster-data-node-01:8088
token
Generates a signed JSON Web Token (JWT) token.
The token argument only works when using JWT authentication in the cluster and when using the -auth-type jwt and -secret <shared-secret> arguments.
Syntax
influxd-ctl token [-exp <duration>]
Arguments
Optional arguments are in brackets.
[ -exp <duration> ]
Determines the time after which the token expires. By default, the token expires after one minute.
Examples
Create a signed JWT token
In this example, the token command returns a signed JWT token.
$ influxd-ctl -auth-type jwt -secret oatclusters token
hereistokenisitgoodandsoareyoufriend.timingisaficklefriendbutwherewouldwebewithoutit.timingthentimeseriesgood-wevemadetheleap-nowletsgetdownanddataandqueryallourheartsout
Attempt to create a signed JWT token with basic authentication
In this example, the token command returns an error because the command doesn’t use JWT authentication.
$ influxd-ctl -auth-type basic -user admini -pwd mouse token
token: tokens can only be created when using bearer authentication
truncate-shards
Truncates hot shards, that is, shards that cover the time range that includes the current time (now()).
The truncate-shards command creates a new shard and the system writes all new points to that shard.
Syntax
influxd-ctl truncate-shards [-delay <duration>]
Arguments
Optional arguments are in brackets.
[ -delay <duration> ]
Determines when to truncate shards after now().
By default, the tool sets the delay to one minute.
The duration is an integer followed by a duration unit.
Resources: Cluster rebalancing
Examples
Truncate shards with the default delay time
In this example, after running the truncate-shards command and waiting one minute, the output of the show-shards command shows that the system truncated shard 51 (truncated shards have an asterisk (*) on the timestamp in the End column) and created the new shard with the id 54.
$ influxd-ctl truncate-shards
Truncated shards.
$ influxd-ctl show-shards
Shards
==========
ID Database Retention Policy Desired Replicas Shard Group Start End Expires Owners
51 telegraf autogen 2 37 2017-03-13T00:00:00Z 2017-03-13T20:40:15.753443255Z* [{26 cluster-data-node-01:8088} {33 cluster-data-node-03:8088}]
54 telegraf autogen 2 38 2017-03-13T00:00:00Z 2017-03-20T00:00:00Z [{26 cluster-data-node-01:8088} {33 cluster-data-node-03:8088}]
Truncate shards with a user-provided delay timestamp
In this example, after running the truncate-shards command and waiting three minutes, the output of the show-shards command shows that the system truncated shard 54 (truncated shards have an asterix (*) on the timestamp in the End column) and created the new shard with the id 58.
$ influxd-ctl truncate-shards -delay 3m
Truncated shards.
$ influxd-ctl show-shards
Shards
==========
ID Database Retention Policy Desired Replicas Shard Group Start End Expires Owners
54 telegraf autogen 2 38 2017-03-13T00:00:00Z 2017-03-13T20:59:14.665827038Z* [{26 cluster-data-node-01:8088} {33 cluster-data-node-03:8088}]
58 telegraf autogen 2 40 2017-03-13T00:00:00Z 2017-03-20T00:00:00Z [{26 cluster-data-node-01:8088} {33 cluster-data-node-03:8088}]
influx command line interface (CLI)
Use the influx command line interface (CLI) to write data to your cluster, query data interactively, and view query output in different formats.
The influx CLI is available on all data nodes.
See InfluxDB command line interface (CLI/shell) in the InfluxDB OSS documentation for details on using the influx command line interface utility.