apt-get install dnsmasq pxelinux syslinux-common我正在尝试通过集群控制节点运行，但在安装时不断出现此错误。
Job for tftpd-hpa.service failed because the control process exited with error code.
See "systemctl status tftpd-hpa.service" and "journalctl -xe" for details.
invoke-rc.d: initscript tftpd-hpa, action "start" failed.
● tftpd-hpa.service - LSB: HPA's tftp server
Loaded: loaded (/etc/init.d/tftpd-hpa; generated)
Active: failed (Result: exit-code) since Mon 2020-05-18 12:42:03 EDT; 10ms ago
Docs: man:systemd-sysv-generator(8)
Process: 15949 ExecStart=/etc/init.d/tftpd-hpa start (code=exited, status=71)
May 18 12:42:02 anthonys-cluster systemd[1]: Starting LSB: HPA's tftp server...
May 18 12:42:02 anthonys-cluster tftpd-hpa[15949]: * Starting HPA's tftpd in.tftpd
May 18 12:42:03 anthonys-cluster in.tftpd[15975]: cannot bind to local IPv4 socket: Address already in use
May 18 12:42:03 anthonys-cluster systemd[1]: tftpd-hpa.service: Control process exited, code=exited, status=71/OSERR
May 18 12:42:03 anthonys-cluster systemd[1]: tftpd-hpa.service: Failed with result 'exit-code'.
May 18 12:42:03 anthonys-cluster systemd[1]: Failed to start LSB: HPA's tftp server.
dpkg: error processing package tftpd-hpa (--configure):
installed tftpd-hpa package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
tftpd-hpa
E: Sub-process /usr/bin/dpkg returned an error code (1)
这是输出ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:b3:49:90:ad txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
docker_gwbridge: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.18.0.1 netmask 255.255.0.0 broadcast 172.18.255.255
inet6 fe80::42:a3ff:fe62:49f2 prefixlen 64 scopeid 0x20<link>
ether 02:42:a3:62:49:f2 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 135 bytes 27926 (27.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.186 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::50a:8d5:b9c1:c8ef prefixlen 64 scopeid 0x20<link>
ether b8:ae:ed:7b:8a:fc txqueuelen 1000 (Ethernet)
RX packets 433599 bytes 628271274 (628.2 MB)
RX errors 0 dropped 62 overruns 0 frame 0
TX packets 55323 bytes 18656592 (18.6 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xaa000000-aa020000
enx8cae4cfd9c9b: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.42.0.1 netmask 255.255.255.0 broadcast 10.42.0.255
inet6 fe80::3939:f3fa:f9f5:da4 prefixlen 64 scopeid 0x20<link>
ether 8c:ae:4c:fd:9c:9b txqueuelen 1000 (Ethernet)
RX packets 595 bytes 205585 (205.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 950 bytes 234026 (234.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enx8cae4cfd9f86: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.42.1.1 netmask 255.255.255.0 broadcast 10.42.1.255
inet6 fe80::9294:993b:90c8:b630 prefixlen 64 scopeid 0x20<link>
ether 8c:ae:4c:fd:9f:86 txqueuelen 1000 (Ethernet)
RX packets 891 bytes 370852 (370.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 703 bytes 177021 (177.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 57907 bytes 614653529 (614.6 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 57907 bytes 614653529 (614.6 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
我的总体目标是让集群的节点通过 PXE 启动并连接到位于控制节点上的 docker swarm。现在，我按照此处显示的说明进行操作：https://manski.net/2016/09/pxe-server-on-existing-network-dhcp-proxy-on-ubuntu/。如何解决上面显示的错误？有没有更简单的方法可以做到这一点？
编辑：我在控制节点上使用 Ubuntu Desktop 20.04，所有其他节点都设置为 PXE 启动。
答案1
您是否先安装了另一个 tftp 服务器？错误似乎很明显，有其他东西正在监听 tftp 端口 (69)
in.tftpd[15975]: cannot bind to local IPv4 socket: Address already in use
要查看端口上正在监听的内容，请尝试
ss -lpn | grep :69
针对同一错误的其他一些提示