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ChainSQL is a blockchain network based database platform, firstly to create blockchain network, and then set related database table.


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Installation steps

1. Set up blockchain network system, the total number of network
nodes can not be less than 4, the number of verification nodes can  
not be less than 4 each node distributed in different IP host.
1> Start the initial node:./chainsqld.exe--conf="./chainsqld.cfg"
2> Start other nodes:./chainsqld.exe--conf="./chainsqld.cfg"--net
2. Configure the local database: open the database, manually create
a database connection, the name of the connection is the contents of the  
DB field in the sync_db configuration item of the chainsqld.cfg file.
3. Configure table information to be synchronized locally.
4. Start local common node:./chainsqld.exe--conf= "./chainsqld.cfg" - net
5. Connect local common nodes to achieve the database write operation
through the API interface.
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Configuration method

Modify configuration file chainsqld.cfg
1. Basic configuration:
[node_db]: Storage metadata database type, windows set NuDB,
Ubuntu set RocksDB
2. Common node configuration:
1> Configure [port_ws_admin_local] or [port_ws_public] according to request.
2> Modify [ledger_history], full record node set full; default is 256  
(save the last 256 blocks).
3> Modify [ips], fill in the connected opposite node IP address and port number
Port number is in the configuration file of the opposite node Port in [port_peer].
4> Modify [validators], fill the public key of the trust node.
5> Modify [validation_quorum], greater than or equal to ([validators] trust node
number + 1) / 2.
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3.Verify the configuration of the node:

1> All settings of common nodes;

2> Runs the following command to obtain the authentication node public key and private key (seed);

# chainsqld -q validation create

{

"status": "success",

"validation_key": "TUCK NUDE CORD BERN LARD COCK ENDS ETC GLUM GALE CASK KEG",

"validation_public_key":

"n9KHn8NfbBsZV5q8bLfS72XyGqwFt5mgoPbcTV4c6qKiuPTAtXYk",

"validation_seed": "ssdecohJMDPFuUPDkmG1w4objZyp4"

}

3> adds validation_seed and validation_public_key to the fields of validation_seed and validation_public_key;

[validation_seed]

ssdecohJMDPFuUPDkmG1w4objZyp4

[validation_public_key]

n9KHn8NfbBsZV5q8bLfS72XyGqwFt5mgoPbcTV4c6qKiuPTAtXYk

4> Adds trustment to other validation nodes: Add public key of other validation nodes in the validators field.

[validators]

n949f75evCHwgyP4fPVgaHqNHxUVN15PsJEZ3B3HnXPcPjcZAoy7

n9MD5h24qrQqiyBC8aeqqCWvpiBiYQ3jxSr91uiDvmrkyHRdYLUj

n9KiYM9CgngLvtRCQHZwgC2gjpdaZcCcbt3VboxiNFcKuwFVujzS

4.Configuration of local required synchronization tables:

1>[sync_db]: local database connection, currently supports MySQL、PostgreSQL、SQLite3, etc..

type=mysql //corresponding to the used type of database

host=localhost //corresponding to the used IP address of database

port=3306 //corresponding to the used port of database

user=root //corresponding to the used user name of database

pass=root //corresponding to the used password of database

db=ripple //corresponding to the used name of database

firststorage=0 //close the function of consensus after importing

2>[sync_tables]: required synchronization table information settings

The name of the account, tables need to synchronize, time need to synchronize or block index (LedgerIndex), separated by spaces, such as:

# continuous synchronize table1

rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh table1

# Synchronize table2 to a point in time

rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh table2 2016-11-18_10:30:10

# synchronize table3 to block index 20000

rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh table3 20000

3>[auto_sync] 1: All new forms will automatically synchronize after the node starts. 0: Only synchronize the tables described in sync_tables

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