Tools

Client Command Line

The following command can be used to start the client command line program.

    cnosdb-cli <options>

Program Parameters

-h, --host <STRING>         The host of CnosDB, default is 'localhost'
-P, --port <NUMBER>         The port of CnosDB, default is 8902
-u, --user <STRING>         The username, default is 'root'
-p, --password <STRING>     The password, default is empty
-d, --database <STRING>     The database to connect, default is 'public'
-t, --tenant <STRING>       The tenant, default is 'cnosdb'
    --precision <PRECISION> The precision of time to write data, all optional values are 'ns', 'us', 'ms', if empty CnosDB will replace it with 'ns'
    --target-partitions <NUMBER>
                            The number of partitions to execute the query, increasing the number of partitions can increase concurrency, if empty CnosDB will replace it with the number of CPU cores
-s, --stream-trigger-interval <INTERVAL>
                            The interval of Micro-Batch transmission. Optional values are 'once', or time period, such as '1m', '10s', '1m10s', etc.
    --data-path             Specify a directory as the data storage location of the cnosdb-cli program, default is the directory of the executable program
-f, --file [<PATH> ...]     Optional, specify a script file. After the program starts, execute the script and exit. Can be used multiple times to specify multiple script files, execute them in order
    --rc [<PATH> ...]       Specify a script file, default is '~/.cnosdbrc'. After the program starts, execute the script first. Can be used multiple times to specify multiple script files, execute them in order
    --format <FORMAT>       The format of the query result, optional values are 'csv', 'tsv', 'table', 'json', 'nd-json', default is 'table'
-q, --quiet                 Whether to run in quiet mode, only output the result, not the execution time, default is false
-w, --write-line-protocol <PATH>
                            Optional, specify a path to store line-protocol format files, import files into CnosDB, if the path is a directory, all files in the directory will be imported.
    --ssl                   Whether to use HTTPS to connect to CnosDB, default is false
    --unsafe-ssl            Whether to allow insecure HTTPS connections, default is false
    --cacert <PATH>         Optional, specify a PEM format certificate file to verify the HTTPS connection. Can be used multiple times to specify multiple certificate files
    --chunked               Whether to use chunked transfer to download the query result, default is false
-h, --help                  View help
-V, --version               View version

Usage

If you need to know more about the startup command, you can refer to Program Parameters.

# Start the CnosDB client command line program with default parameters
cnosdb-cli

# Start the CnosDB client command line program and connect to 192.168.1.2:8912 with tenant identity ten_beta
cnosdb-cli --host 192.168.1.2 --port 8912 --tenant ten_beta

# Start the CnosDB client command line program and import the file ./data_202220808 into CnosDB
cnosdb-cli --write-line-protocol ./data_202220808

After the program starts, it will run in interactive mode. You can enter SQL or instructions, and then press the Enter key to execute.

Examples of SQL:

❯ CREATE DATABASE test;
Query took 0.010 seconds.
❯ use test;
test ❯ CREATE TABLE test_table(c1 BIGINT, TAGS(t1));
Query took 0.020 seconds.
test ❯ SHOW TABLES;
+------------+
| TABLE_NAME |
+------------+
| test_table |
+------------+
Query took 0.030 seconds.
test ❯ insert into test_table(time, t1, c1) values(now(), 'a1', 1);
+------+
| rows |
+------+
| 1    |
+------+
Query took 0.040 seconds.
test ❯ select * from test_table;
+----------------------------+----+----+
| time                       | t1 | c1 |
+----------------------------+----+----+
| 2023-04-05T06:07:08.091011 | a1 | 1  |
+----------------------------+----+----+
Query took 0.050 seconds.

You can also use some shortcut instructions in the program:

\?                  View statement help
\h                  View statement help
\q                  Exit the cnosdb-cli program
\c <database>       Connect to the database, equivalent to the statement 'USE <database>;'
\d                  View all tables in the database, equivalent to the statement 'SHOW TABLES;'
\d <table>          Describe the table, equivalent to the statement 'DESCRIBE TABLE <table>;'
\quiet [true|false] Switch quiet mode, in quiet mode, only output the result, not the execution time
\w <path>           Read the file in line-protocol format and import it into the database. If the path is a directory, all files in the directory will be read

Examples of Instructions:

❯ \c test;
test ❯ d
+------------+
| TABLE_NAME |
+------------+
| test_table |
+------------+
Query took 0.010 seconds.
test ❯ \d test_table
+-------------+-----------------------+-------------+-------------------+
| COLUMN_NAME | DATA_TYPE             | COLUMN_TYPE | COMPRESSION_CODEC |
+-------------+-----------------------+-------------+-------------------+
| time        | TIMESTAMP(NANOSECOND) | TIME        | DEFAULT           |
| t1          | STRING                | TAG         | DEFAULT           |
| c1          | BIGINT                | FIELD       | DEFAULT           |
+-------------+-----------------------+-------------+-------------------+
Query took 0.020 seconds.
test ❯ \q

File Repair Tool

Used to view file contents, check, repair files.

cnosdb-tool <options> <COMMAND>

Main Function

Briefly introduce the three subcommands of the file repair tool inspect, check, edit, and the global parameters of the corresponding subcommands. For an explanation of each file format, see: Supported file formats.Run the following command to start the CLI program in the root directory of CnosDB source code.

Inspect file contents

Inspect the details of a file, or all files in a directory.

cnosdb-tool inspect [OPTIONS] <COMMAND>

Global parameters:

• --format <FORMAT> - output format. options: csv, json, table, parquet, default is: json. JSON is used to get the files used by the 'cnosdb-tool repair' subcommand, and TABLE is used to get a format more suitable for viewing on the command line.
• --time-format <TIME_FORMAT> - time foramt. options: timestamp, rfc3339, default is: timestamp.

Supported file formats:

• Summary
• WAL
• Tombstone
• TSM
• Hinted-Handoff
• Series-Binlog

Check file

Check a file and output the possible errors.

cnosdb-tool check [FILE_TYPE] [OPTIONS] [PATH]

Global parameters:

• <PATH> - file path.

Supported file formats:

• Summary
• WAL
• Tombstone
• TSM
• Hinted-Handoff
• Series-Binlog

Repair file

Repair a file automatically or manually.

cnosdb-tool repair [FILE_TYPE] <SUB-COMMAND>

Supported file formats:

• Summary
• WAL
• Tombstone
• Hinted-Handoff
• Series-Binlog

Repair specific file

Delete or modify the contents of the file.

cnosdb-tool repair [FILE_TYPE] edit [OPTIONS] <PATH>

Global parameters:

• <PATH> - file path to be repaired.
• --from-pos <NUMBER> - start position of the data block to be modified.
• --to-pos <NUMBER> - end position of the data block to be modified.
• --delete - delete the data block.
• --input <FILE> - The file used to replace the contents of the data block, in JSON format. The file is generally obtained by the file inspection subcommand cnosdb-tool inspect --format json, or by the cnosdb-tool repair demo subcommand.
• --out-dir <DIR> - The directory where the repaired file is saved, the default is the directory of the original file.

Get a sample JSON of file contents

cnosdb-tool repair [FILE_TYPE] demo

Supported file formats

Summary

Format of Summary file is RecordFile, used to store metadata of storage engine.

Inspect file contents

Inspect the contents of the Summary file in the form of logs:

cnosdb-tool inspect summary-log [OPTIONS] <PATH>

• <PATH> - file path.
• --from - start position of the data block.
• --to - end position of the data block.
• --tenant - filter data blocks by Tenant.
• --db - filter data blocks by Database.
• --vnode - filter data blocks by Vnode.
• --tsm-id - filter data blocks by TSM ID.

Client CLI

# Output the contents of the 5th to 10th data blocks in a Summary file
cnosdb-tool inspect summary-log --from 5 --to 10

# Output the log contents of the cnosdb.public database in a Summary file
cnosdb-tool inspect summary-log --tenant cnosdb --db public

Inspect the contents of the Summary file in the form of final state:

cnosdb-tool inspect summary-final [OPTIONS] <PATH>

• <PATH> - file path.
• --db-data-path - data file path, the default is: <PATH>/../db/data/。
• --tenant - filter data by Tenant.
• --db - filter data by Database.
• --vnode - filter data by Vnode.

Examples:

# Output cnosdb instance, database cnosdb.public all data files
cnosdb-tool inspect summary-final --tenant cnosdb --db public

Check file

cnosdb-tool check summary [OPTIONS] <PATH>

Repair file

cnosdb-tool repair summary edit [OPTIONS] <PATH>

• --from <NUMBER> - the start value of the data block sequence number to be modified.
• --to <NUMBER> - the end value of the data block sequence number to be modified.
• --out - output path of the modified file, default is: <out_dir>/<source_file>.{%Y%m%d_%H%M%S}.{e|d}.hh

Examples:

# Delete the 5th and 6th data blocks in a Summary file
cnosdb-tool repair summary edit <PATH> --delete --from 5 --to 6

# Replace the contents of the 5th and 6th data blocks in a Summary file with the contents of the specified file, and output to the summary.bak file
cnosdb-tool repair summary edit <PATH> --from 5 --to 6 --input <PATH> --output summary.bak

WAL

The format of WAL file is RecordFile, used to store write requests caused by storage engine, such as WriteRequest, DropTableRequest, etc. Each Record contains a globally increasing sequence number.

Inspect file contents

cnosdb-tool inspect wal [OPTIONS] <PATH>

• <PATH> - file path.
• --from - start position of the data block.
• --to - end position of the data block.
• --from-seq <NUMBER> - start global sequence number of the data block.
• --to-seq <NUMBER> - end global sequence number of the data block.
• --action <ACTION> - filter data by action, options: write，delete，delete-vnode，delete-table，update-series-keys。
• --tenant <STRING> - filter data blocks by Tenant.
• --db <STRING> - filter data by Database.
• --vnode <NUMBER> - filter data blocks by Vnode.
• --table <STRING> - filter data by Table.

Examples:

# Output the contents of the 5th to 10th data blocks in a WAL file
cnosdb-tool inspect wal --from 5 --to 10

# Outputs the contents of data blocks with global sequence numbers from 1000 to 1024 in a WAL file
cnosdb-tool inspect wal --from-seq 1000 --to-seq 1024

Check file

cnosdb-tool check wal [OPTIONS] <PATH>

Repair file

cnosdb-tool repair wal edit [OPTIONS] <PATH>

• --from <NUMBER> - the start value of the data block sequence number to be modified.
• --to <NUMBER> - the end value of the data block sequence number to be modified.
• --out - output path of the modified file, default is: <out_dir>/<source_file>.{%Y%m%d_%H%M%S}.{e|d}.wal

Examples:

# Delete the 5th and 6th data blocks in a WAL file
cnosdb-tool repair wal edit <PATH> --delete --from 5 --to 6

# Replace the contents of the 5th and 6th data blocks in a WAL file with the contents of the specified file, and output to the wal.bak file
cnosdb-tool repair wal edit <PATH> --from 5 --to 6 --input <PATH> --output wal.bak

Tombstone

The format of Tombstone file is RecordFile, used to store delete marks.

Inspect file contents

cnosdb-tool inspect tombstone [OPTIONS] <PATH>

• <PATH> - file path.
• --from - start position of the data block.
• --to - end position of the data block.

Examples:

# Output the contents of the 5th to 10th data blocks in a Tombstone file
cnosdb-tool inspect tombstone --from 5 --to 10

Check file

cnosdb-tool check tombstone [OPTIONS] <PATH>

Repair file

cnosdb-tool repair tombstone edit [OPTIONS] <PATH>

• --from <NUMBER> - the start value of the data block sequence number to be modified.
• --to <NUMBER> - the end value of the data block sequence number to be modified.
• --out - output path of the modified file, default is: <out_dir>/<source_file>.{%Y%m%d_%H%M%S}.{e|d}.tombstone

Examples:

# Delete the 5th and 6th data blocks in a Tombstone file
cnosdb-tool repair tombstone edit <PATH> --delete --from 5 --to 6

# Replace the contents of the 5th and 6th data blocks in a Tombstone file with the contents of the specified file, and output to the tombstone.bak file
cnosdb-tool repair tombstone edit <PATH> --from 5 --to 6 --input <PATH> --output tombstone.bak

TSM

TSM file stores time series data.

Inspect file contents

cnosdb-tool inspect tsm [OPTIONS] <PATH>

• --tombstone - whether to output the contents of the Tombstone file.
• --level - output level, options: fields, block。
  • fields - output all field information.
  • block - output all data block information.

Examples:

Output all the data block information in a TSM file
cnosdb-tool inspect tsm --level block <PATH>

Check file

cnosdb-tool check tsm [OPTIONS] <PATH>

Hinted-Handoff

Hinted-handoff file is used to temporarily store write requests that cannot be written correctly.

Inspect file contents

cnosdb-tool inspect hh [OPTIONS] <PATH>

Options:

• <PATH> - file path.
• --from - start position of the data block.
• --to - end position of the data block.
• --tenant <STRING> - filter data blocks by Tenant.
• --vnode <NUMBER> - filter data blocks by Vnode.

Examples:

# Output the contents of the 5th to 10th data blocks in a Hinted-handoff file
cnosdb-tool inspect hh --from 5 --to 10

Check file

cnosdb-tool check hh [OPTIONS] <PATH>

Repair file

cnosdb-tool repair hh edit [OPTIONS] <PATH>

Options:

• --from <NUMBER> - the start value of the data block sequence number to be modified.
• --to <NUMBER> - the end value of the data block sequence number to be modified.
• --out - the save location of the repaired file, the default is: <out_dir>/<source_file>.{%Y%m%d_%H%M%S}.{e|d}.summary

Examples:

# Delete the 5th and 6th data blocks in a Hinted-handoff file
cnosdb-tool repair hh edit <PATH> --delete --from 5 --to 6

# Replace the contents of the 5th and 6th data blocks in a Hinted-handoff file with the contents of the specified file, and output to the hh.bak file
cnosdb-tool repair hh edit <PATH> --from 5 --to 6 --input <PATH> --output hh.bak

Series-Binlog

Series binlog files are used to store data models.

Inspect file contents

cnosdb-tool inspect series-binlog [OPTIONS] <PATH>

Options:

• <PATH> - file path.
• --from - start position of the data block.
• --to - end position of the data block.
• --database <STRING> - filter data blocks by Database.
• --table <NUMBER> - filter data blocks by Table.

Examples:

# Output the contents of the 5th to 10th data blocks in a Series-binlog file
cnosdb-tool inspect series-binlog --from 5 --to 10

Check

cnosdb-tool check series-binlog [OPTIONS] <PATH>

Repair

cnosdb-tool repair series-binlog edit [OPTIONS] <PATH>

Options:

• --from <NUMBER> - the start value of the data block sequence number to be modified.

• --to <NUMBER> - the end value of the data block sequence number to be modified.

• --out - output path of the modified file, default is: <out_dir>/<source_file>.{%Y%m%d_%H%M%S}.{e|d}.binlog

Examples:

# Delete the 5th and 6th data blocks in a Series-binlog file
cnosdb-tool repair series-binlog edit <PATH> --delete --from 5 --to 6

# Replace the contents of the 5th and 6th data blocks in a Series-binlog file with the contents of the specified file, and output to the s_log.bak file
cnosdb-tool repair series-binlog edit <PATH> --from 5 --to 6 --input <PATH> --output s_log.bak