host文件:
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
#Public IP
10.0.10.12 db1.hshy.com db1
10.0.10.13 db2.hshy.com db2
#Private IP
192.168.10.12 priv-db1
192.168.10.13 priv-db2