delete from nodes;
insert into nodes values (7, 'Cologne',2, '127.0.0.1', 15057, 30, 365, 0, 5);
insert into nodes values (6, 'Berlin', 2, '127.0.0.1', 15056, 30, 365, 0, 5);
insert into nodes values (5, 'Germany',2, '127.0.0.1', 15055, 30, 365, 0, 4);
insert into nodes values (4, 'Zabbix', 2, '127.0.0.1', 15054, 30, 365, 1, 0);
insert into nodes values (3, 'Latvia', 2, '127.0.0.1', 15053, 30, 365, 0, 4);
insert into nodes values (2, 'Riga',   2, '127.0.0.1', 15052, 30, 365, 0, 3);
insert into nodes values (1, 'Dpils',  2, '127.0.0.1', 15051, 30, 365, 0, 3);