Fastdfs supports dual IP and IPv6

FastDFS- Support double IP Feature introduction

FastDFS V6.0 Support double IP Feature introduction
Reference resources URL: https://www.nuomiphp.com/Article/detail/id/87.html
FastDFS6.0.6 Set up the cluster
Reference resources URL: http://www.luyixian.cn/news_show_381479.aspx

v6.0 Support double IP,tracker server and storage server Both support dual IP.

v6.0 The new features are described below ：

Support double IP, An intranet IP, An extranet IP, Support NAT Both internal and external networks IP, Solve the problem of cross machine room or hybrid cloud deployment . double ip This feature can solve the problem of Extranet and cross cloud .

tracker server and storage server Both can support double IP, An intranet IP, An extranet IP.

FastDFS Support double IP After characteristic , Will be fully compatible with previous orders IP Design and logic of . about storage server To use double IP characteristic , You have to use FastDFS V4.0 Introduced storage server id characteristic , That is to say, double IP Configuration to storage_ids.conf in .

double ip Connection rules

1. storage Connect storage server, Try to connect to the intranet first IP, If it fails, try connecting to the Internet again IP.

2. client towards tracker server obtain storage server IP,tracker server The rules are as follows :
   Requests from the Internet , Return to the Internet IP;
   Request from intranet , Return to Intranet IP.

Intranet IP The address segment is ：10. Lead ,192.168. Lead and 172.[16-32). The first IP Address . notes ：[10-32) Is the range representation , Is greater than or equal to 10 And less than 32 The integer of .

double ip To configure

1. To configure tracker

   vim /etc/fdfs/tracker.conf
   

   #  What needs to be revised is as follows 
    
   #  Note that the server is  NAT  Therefore, the intranet is bound here  IP  You can see it in the background of Alibaba cloud 
   #  You can use the command to see  ifconfig -a  There is no public network IP
   bind_addr = 172.xxx.xxx.xxx
    
   # tracker  Server port （ Default 22122, Generally, it is not modified ）
   port=22122
    
   #  The root directory where logs and data are stored  
   base_path=/home/dfs 
    
   # use_storage_id  Set to  true  After that, you need to  storage_ids.conf  Set up double  IP 
   #  The original notes are as follows ：
   # if use storage server ID instead of IP address
   # if you want to use dual IPs for storage server, you MUST set
   # this parameter to true, and configure the dual IPs in the file
   # configured by following item "storage_ids_filename", such as storage_ids.conf
   # default value is false
   # since V4.00
   use_storage_id = true
   

   use_storage_id Set to true After that, you need to storage_ids.conf Set up double IP

2. To configure storage_ids.conf

   # <id> <group_name> <ip_or_hostname[:port]>
   #
   # id is a natural number (1, 2, 3 etc.),
   # 6 bits of the id length is enough, such as 100001
   #
   # storage ip or hostname can be dual IPs seperated by comma,
   # one is an inner (intranet) IP and another is an outer (extranet) IP,
   # or two different types of inner (intranet) IPs
   # for example: 192.168.2.100,122.244.141.46
   # another eg.: 192.168.1.10,172.17.4.21
   #
   # the port is optional. if you run more than one storaged instances
   # in a server, you must specified the port to distinguish different instances.
   #  An intranet  IP  A public network  IP
   100001   group1  172.XXX.XXX.XXX,123.XXX.XXX.XXX
   100002   group1  172.XXX.XXX.XXX,123.XXX.XXX.XXX
   

3. To configure storage

   vim /etc/fdfs/storage.conf
   

   #  What needs to be revised is as follows 
    
   # storage Service port （ Default 23000, Generally, it is not modified ）
   port=23000
    
   #  Data and log file storage root  
   base_path=/home/dfs
    
   #  The first storage directory  
   store_path0=/home/dfs  
    
   #  The point is this , Be sure to pay attention to the format   Intranet , Extranet : Port number 
   #  The point is this , Be sure to pay attention to the format   Intranet , Extranet : Port number 
   #  The point is this , Be sure to pay attention to the format   Intranet , Extranet : Port number 
   # tracker_server can ocur more than once for multi tracker servers.
   # the value format of tracker_server is "HOST:PORT",
   # the HOST can be hostname or ip address,
   # and the HOST can be dual IPs or hostnames seperated by comma,
   # the dual IPS must be an inner (intranet) IP and an outer (extranet) IP,
   # or two different types of inner (intranet) IPs.
   # for example: 192.168.2.100,122.244.141.46:22122
   # another eg.: 192.168.1.10,172.17.4.21:22122
   tracker_server = 192.168.2.100,122.244.111.111:22122
   tracker_server = 192.158.2.100,123.244.222.222:22122
    
   # http Port to access files ( Default 8888, Modify according to the situation , and nginx Consistent in )
   http.server_port=8888
   

storage server To use double IP Words , Need to start the storage server id characteristic , stay tracker.conf Lieutenant general use_storage_id Set to true, Need to put storage server double IP Configuration to storage_ids.conf in .

FastDFS- Support IPV6

official HISTORY keyword IPv6
Version 1.41 2019-09-30

• change CIDR network_bits range from [16, 32) to [10, 32)
• ini_file_reader.c: fix empty string compare
• multi_socket_client.c: code refine
• sockopt.[hc] support IPv6

View source code sockopt.c, You can see Join in ipv6 The judgment of the , The functions used support ipv6 Function of , Such as ：
inet_pton Function is random IPv6 Functions that appear , about IPv4 Address and IPv6 All addresses apply , Function p and n Each represents the expression （presentation) And numbers （numeric).

typedef struct sockaddr_convert_s {
    
    socklen_t len;
    union {
    
        struct sockaddr addr;
        struct sockaddr_in addr4;
        struct sockaddr_in6 addr6;
    } sa;
} sockaddr_convert_t;
...

int setsockaddrbyip(const char *ip, const short port, sockaddr_convert_t *convert)
{
    
    int af;
    void *dest;

    if (is_ipv6_addr(ip))
    {
    
        convert->len = sizeof(convert->sa.addr6);
        dest = &convert->sa.addr6.sin6_addr;

        af = AF_INET6;
        convert->sa.addr6.sin6_family = PF_INET6;
        convert->sa.addr6.sin6_port = htons(port);
    }
    else  //ipv4
    {
    
        convert->len = sizeof(convert->sa.addr4);
        dest = &convert->sa.addr4.sin_addr;

        af = AF_INET;
        convert->sa.addr4.sin_family = PF_INET;
        convert->sa.addr4.sin_port = htons(port);
    }

    if (inet_pton(af, ip, dest) == 0)
    {
    
		logError("file: "__FILE__", line: %d, "
			"invalid %s ip address: %s", __LINE__,
            (af == AF_INET ? "IPv4" : "IPv6"), ip);
        return EINVAL;
    }
    return 0;
}

Reference resources

FastDFS6.0.6 Set up the cluster
Reference resources URL: http://www.luyixian.cn/news_show_381479.aspx