Wednesday, April 5, 2017

Kickstart troubleshooting

This is to see if a server which need to be kickstarted is able to get initial files from TFTP server (which runs on port 69).
[root@kickstarter pxelinux.cfg]# tcpdump -i eth0 port 69
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
11:30:19.077306 IP srv-9000.ah-esp-encap > kickstarter.domain.com.tftp:  41 RRQ "linux-install/pxelinux.0" octet tsize 0
11:30:19.106252 IP srv-9000.acp-port > kickstarter.domain.com.tftp:  46 RRQ "linux-install/pxelinux.0" octet blksize 1456
11:30:19.183548 IP srv-9000.40769 > kickstarter.domain.com.tftp:  77 RRQ "linux-install/pxelinux.cfg/01-c4-34-6b-b9-16-70" octet tsize 0 blksize 1440
11:30:19.213799 IP srv-9000.40770 > kickstarter.domain.com.tftp:  65 RRQ "linux-install/pxelinux.cfg/0A4461FA" octet tsize 0 blksize 1440
11:30:19.242361 IP srv-9000.40771 > kickstarter.domain.com.tftp:  63 RRQ "linux-install/rhel-as-7u1/vmlinuz" octet tsize 0 blksize 1440
11:30:35.973742 IP srv-9000.40772 > kickstarter.domain.com.tftp:  66 RRQ "linux-install/rhel-as-7u1/initrd.img" octet tsize 0 blksize 1440
^C
6 packets captured
38 packets received by filter
1 packets dropped by kernel

No comments: