On the base of cellframe blockchain is realised conception of service providing. At this stage working realization of this concept is VPN. Using node, working in special way (setup of which is described below), is realised task of authorization clients and centralized payment services.
Node setup for work in CDB regime
Setup CDB-node
- Install actual version of cellframe-node with “full” role. For server working you should specify 80 port during installation.
- Download actual distributive of CDB-plugin from private server and install it. Authorization on private server is realised with openSSL-certificates. To get such serfiticate - you should request to administrator.
- Turn on binary plugin support in confuguration node file “/opt/cellframe-node/etc/cellframe.cfg” and uncomment strings [plugins] and enabled=true in this section.
Setup node configuration
CDB configuration is performed in it’s own configuration file “/opt/cellframe-node/var/lib/plugins/libcellframe-node-cdb/libcellframe-node-cdb.cfg_“. File will be have approximately such content:
# Central Database
[cdb]
enabled=true
servers_list_check=true
servers_list_check_periods=[300]
servers_list_enabled=true
servers_list_networks=[riemann]
cache_expire=300
# Central Database authorization
[cdb_auth]
enabled=true
mode=both
collection_name=dapDb
domain=mydomain
tx_cond_create=true
tx_cond_templates=[mywallet0:0.00001:3600:KELT:riemann]In [cdb] section must be installed parameter enabled in true to turn on CDB-plugin. Parameter server_list_enabled should be true to make list of servers active. Also we turn servers_list_check on true to enable periodic check of servers list. CDB itself will check list of orders with periodicity specified in servers_list_check_periods. Parameter servers_list_networks needed to specify name of network where CDB will work.
In section [cdb_auth] you must turn parameter enabled on true to activate client authorization in CDB.
For support of paid regime is necessary to uncomment and establish parameter tx_cond_create in true to allow CDB create conditional transactions for clients.
tx_cond_templates - template for creating conditional transaction.
There:
mywallet0 - wallet from which will be taken means to create conditional transactions
0.00001 - sum which must be transfered on conditional output
3600 - minimal timeout between creations of conditional transactions (at this moment not in usage
KELT - ticker of payment token. Pay attention that payment of different services is performed just in native token.
riemann - network in which conditional tranasction is created
Rest of the parameters can be left by default.
Adding VPN-node in list of servers
After VPN-node was added in node-list and was created correspondong order, it must be added in list of servers on CDB (saving statistical list of orders). To make this it’s necessary to perform command cellframe-node-cli vpn_cdb -net riemann order static save on CDB. After this node should appeare in the server list. In case if it’s necessary to delete node from server list you can just delete it’s order and then perform command cellframe-node-cli vpn_cdb -net riemann order static del, deleting all orders from the list and then save list of orders again by using command cellframe-node-cli vpn_cdb -net riemann order static save.
Generation of the serial key for user
For serial key generation you must perform command cellframe-node-cli vpn_cdb serial generate -n <number of serial keys>] [-active_days <active days that left for serial>] in CDB, after that there will appear list of all generated serial keys in console. The list of all keys can be show with command cellframe-node-cli vpn_cdb serial list.