请看下面的配置：
loadmodule "db_postgres.so"
loadmodule "db_virtual.so"
modparam("db_virtual", "db_urls", "define group FAILOVER")
modparam("db_virtual", "db_probe_time", 10)
modparam("db_virtual", "db_max_consec_retrys", 20)
modparam("db_virtual", "db_urls", "postgres://opensips:opensips@192.168.1.100:5432/opensips")
modparam("db_virtual", "db_urls", "postgres://opensips:opensips@192.168.1.101:5432/opensips")loadmodule "avpops.so"
modparam("avpops", "db_url", "virtual://group")loadmodule "usrloc.so"
modparam("usrloc", "nat_bflag", "NAT")
modparam("usrloc", "working_mode_preset", "single-instance-sql-write-through")
modparam("usrloc", "db_url", "virtual://group")
OpenSIPS这方面确实强
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