n-relay(IP4:192.168.1.116:54684/UDP|IP4:100.100.80.100:58995/UDP)

这个n-relay地址是一个多路径网络代理的表示，它包含两个部分，通过竖线分隔：

1. 第一部分是`IP4:192.168.1.116:54684/UDP`，表示一个UDP（User Datagram Protocol，用户数据报协议）端口转发。这意味着数据包将从192.168.1.116这台设备的54684端口发送出去。

2. 第二部分是`IP4:100.100.80.100:58995/UDP`，同样也是一个UDP端口转发，数据会从100.100.80.100的58995端口接收并转发。

这种设置通常用于增强网络连接的可用性和性能，通过多个路径来分散流量，提高数据传输的可靠性和速度。n-relay可能用于分布式系统、游戏加速、或者是某些需要高带宽和低延迟的应用场景。

相关问题

R2------------------------- sy sys R2 un in en int g0/0/0 ip add 10.0.0.2 30 int g0/0/1 ip add 192.168.200.2 30 q dhcp en ip pool dhcppool net 192.168.0.0 mask 26 g 192.168.0.62 lease day 1 dns 1.1.1.1 q int g0/0/1 dhcp select global q ip route-static 192.168.0.0 26 192.168.200.1 ip route-static 192.168.0.64 26 10.0.0.1 q SW2------------------- sy sys SW2 un in en v b 30 40 int e0/0/1 p l a p d v 30 int g0/0/1 p l a p d v 40 int v 30 ip add 192.168.0.62 26 int v 40 ip add 192.168.200.1 30 q dhcp en int v 30 dhcp select re dhcp relay server-ip 192.168.200.2 q ip route-static 0.0.0.0 0 192.168.200.2 q 把ip地址改为192.168.44.61

R2-------------------------
sy
sys
R2
un
in
en
int g0/0/0
ip add 192.168.44.61 30
int g0/0/1
ip add 192.168.200.2 30
q
dhcp
en
ip pool dhcppool
net 192.168.0.0 mask 26
g 192.168.0.62
lease day 1
dns 1.1.1.1
q
int g0/0/1
dhcp select global
q
ip route-static 192.168.0.0 26 192.168.200.1
ip route-static 192.168.0.64 26 192.168.44.62
q

SW2-------------------
sy
sys
SW2
un
in
en
v b 30 40
int e0/0/1
p l a p d
v 30
int g0/0/1
p l a p d
v 40
int v 30
ip add 192.168.0.62 26
int v 40
ip add 192.168.200.1 30
q
dhcp
en
int v 30
dhcp select re
dhcp relay server-ip 192.168.200.2
q
ip route-static 0.0.0.0 0 192.168.200.2
q

2023-06-08T02:25:37.583259Z 1 [Note] WSREP: GCache history reset: 00000000-0000-0000-0000-000000000000:0 -> c443b2d8-05a0-11ee-86b8-2e0fddf21737:0 2023-06-08T02:25:39.261528Z WSREP_SST: [INFO] Streaming with xbstream 2023-06-08T02:25:39.273174Z WSREP_SST: [INFO] WARNING: Stale temporary SST directory: /data/mysql//.sst from previous state transfer. Removing 2023-06-08T02:25:39.279749Z WSREP_SST: [INFO] Proceeding with SST......... 2023-06-08T02:25:39.519583Z 0 [Note] WSREP: (c05c7a4e, 'tcp://0.0.0.0:4567') turning message relay requesting off 2023-06-08T02:25:39.553817Z WSREP_SST: [INFO] ............Waiting for SST streaming to complete! 2023-06-08T02:25:49.257301Z WSREP_SST: [ERROR] ******************* FATAL ERROR ********************** 2023-06-08T02:25:49.260159Z WSREP_SST: [ERROR] xtrabackup_checkpoints missing. xtrabackup/SST failed on DONOR. Check DONOR log 2023-06-08T02:25:49.262811Z WSREP_SST: [ERROR] ****************************************************** 2023-06-08T02:25:49.266472Z WSREP_SST: [ERROR] Cleanup after exit with status:2 2023-06-08T02:25:49.289335Z 0 [Warning] WSREP: 1.0 (host78): State transfer to 0.0 (host79) failed: -22 (Invalid argument) 2023-06-08T02:25:49.289400Z 0 [ERROR] WSREP: gcs/src/gcs_group.cpp:gcs_group_handle_join_msg():811: Will never receive state. Need to abort. 2023-06-08T02:25:49.289465Z 0 [Note] WSREP: gcomm: terminating thread 2023-06-08T02:25:49.289494Z 0 [Note] WSREP: gcomm: joining thread 2023-06-08T02:25:49.289662Z 0 [Note] WSREP: gcomm: closing backend 2023-06-08T02:25:49.593055Z 0 [ERROR] WSREP: Process completed with error: wsrep_sst_xtrabackup-v2 --role 'joiner' --address '10.106.113.79' --datadir '/data/mysql/' --defaults-file '/etc/my.cnf' --defaults-group-suffix '' --parent '9996' --mysqld-version '5.7.41-44-57' '' : 2 (No such file or directory) 2023-06-08T02:25:49.593124Z 0 [ERROR] WSREP: Failed to read uuid:seqno from joiner script. 2023-06-08T02:25:49.593137Z 0 [ERROR] WSREP: SST script aborted with error 2 (No such file or directory) 2023-06-08T02:25:49.593186Z 0 [ERROR] WSREP: SST failed: 2 (No such file or directory) 2023-06-08T02:25:49.593234Z 0 [ERROR] Aborting 2023-06-08T02:25:49.593269Z 0 [Note] WSREP: Signalling cancellation of the SST request. 2023-06-08T02:25:49.593306Z 0 [Note] WSREP: SST request was cancelled 2023-06-08T02:25:49.593337Z 0 [Note] Giving 2 client threads a chance to die gracefully 2023-06-08T02:25:49.593357Z 1 [Note] WSREP: Closing send monitor... 2023-06-08T02:25:49.593370Z 1 [Note] WSREP: Closed send monitor. 2023-06-08T02:25:50.292465Z 0 [Note] WSREP: Current view of cluster as seen by this node

这段日志是一个 MySQL 集群中的一台机器（DONOR）在进行 SST（State Snapshot Transfer）时出现了错误。从日志中可以看到，xtrabackup_checkpoints 文件缺失导致 SST 失败，需要检查 DONOR 日志文件，以找到原因。因为 SST 失败，其他节点（joiner）无法接收状态，集群需要终止。最后，WSREP 进程由于遇到错误而退出。