私はジュニパーネットワークスのスイッチを設定するために取り組んでいますゼロタッチプロビジョニングCentOS 7 では、journal/log/(systemd など) に次の内容が含まれます。
Nov 28 10:08:46 server dhcpd[8800]: Checking if packet is permitted.
Nov 28 10:08:46 server dhcpd[8800]: Permit list: unknown clients
Nov 28 10:08:46 server dhcpd[8800]: OK
Nov 28 10:08:46 server dhcpd[8800]: Checking if packet is permitted.
Nov 28 10:08:46 server dhcpd[8800]: Permit list: unknown clients
Nov 28 10:08:46 server dhcpd[8800]: OK
Nov 28 10:08:46 server dhcpd[8800]: matched a Juniper Networks QFX-5100
Nov 28 10:08:46 server dhcpd[8800]: DHCPDISCOVER from 08:b2:58:ab:dc:00 via eth2
Nov 28 10:08:47 server dhcpd[8800]: DHCPOFFER on 192.168.0.100 to 08:b2:58:ab:dc:00 (TR0217010017) via eth2
Nov 28 10:08:47 server dhcpd[8800]: Checking if packet is permitted.
Nov 28 10:08:47 server dhcpd[8800]: Permit list: unknown clients
Nov 28 10:08:47 server dhcpd[8800]: OK
Nov 28 10:08:47 server dhcpd[8800]: Checking if packet is permitted.
Nov 28 10:08:47 server dhcpd[8800]: Permit list: unknown clients
Nov 28 10:08:47 server dhcpd[8800]: OK
Nov 28 10:08:47 server dhcpd[8800]: matched a Juniper Networks QFX-5100
Nov 28 10:08:47 server dhcpd[8800]: DHCPREQUEST for 192.168.0.100 (192.168.0.250) from 08:b2:58:ab:dc:00 (TR0217010017) via eth2
Nov 28 10:08:47 server dhcpd[8800]: DHCPACK on 192.168.0.100 to 08:b2:58:ab:dc:00 (TR0217010017) via eth2
サーバーは「不明」プールからプロビジョニングされます。構成の関連部分は次のとおりです。
# Global options
max-lease-time 1800;
default-lease-time 1800;
dynamic-bootp-lease-length 120;
ddns-update-style none;
# TFTP Server IP and file
next-server 192.168.0.250; # Assumed to be the DHCP server
filename "pxelinux.0";
# Define the pxe grub filename option
option zone-pxegrub-filename code 150 = text;
option zone-pxegrub-filename "/opt/tftp_files/boot/pxelinux.0";
# Options for Juniper switch to download FW and configuration from this server
# as described here: https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/software-image-and-configuration-automatic-provisioning-confguring.html
option space NEW_OP;
option NEW_OP.config-file-name code 1 = text;
option NEW_OP.image-file-name code 0 = text;
option NEW_OP.image-file-type code 2 = text;
option NEW_OP.transfer-mode code 3 = text;
option NEW_OP.alt-image-file-name code 4 = text;
option NEW_OP-encapsulation code 43 = encapsulate NEW_OP;
option option-150 code 150 = ip-address;
# bringing in the vendor specific options
vendor-option-space NEW_OP;
option NEW_OP.image-file-name "/juniper/fw/jinstall-host-qfx-5-17.2R1.13-signed.tgz";
option NEW_OP.config-file-name "/juniper/cfg/qfx-5100.cfg";
option NEW_OP.alt-image-file-name "/juniper/fw/jinstall-host-qfx-5-17.2R1.13-signed.tgz";
option NEW_OP.image-file-type "filename";
option NEW_OP.transfer-mode "tftp";
option option-150 192.168.0.250;
class "workers" {
match if substring(hardware, 1, 3) = 00:20:0c or substring(hardware, 1, 3) = 00:18:7D;
log(info, "matched a worker bee");
}
class "monitor" {
match if substring(hardware, 1, 3) = 00:d0:24;
log(info, "matched to a monitor");
}
class "JuniperSwitch" {
match if option vendor-class-identifier ~~ "^juniper-qfx5100.+$";
log(info, "matched a Juniper Networks QFX-5100");
}
subnet 192.168.0.0 netmask 255.255.255.0 {
#authoritative;
option routers 192.168.0.250;
pool {
allow members of "workers";
range 192.168.0.1 192.168.0.99;
log(info, concat("Issuing DHCP address to worker bootp requestor: ", binary-to-ascii(16, 8, ":", substring(hardware, 1, 6))));
}
pool {
allow members of "monitor";
range 192.168.0.245;
log(info, concat("Issuing DHCP address to monitor bootp requestor: ", binary-to-ascii(16, 8, ":", substring(hardware, 1, 6))));
}
pool {
allow members of "JuniperSwitch";
allow dynamic bootp clients;
range 192.168.0.201;
}
pool {
allow unknown-clients;
range 192.168.0.100 192.168.0.150;
}
}
期待した場所にアドレスが表示されない理由を教えてください。
答え1
DHCP経由でIPアドレスを要求する唯一のスイッチだと仮定すると、私は疑うこれは、古い/既知の ISC DHCP のバグ/「機能」です:
すでに与えられた動的リースは他のリースよりも優先されます新しい特に同じネットワーク内にある場合は、構成が異なります。
つまり、特定のケースを設定する前に、スイッチは一般/「不明」プールからアドレスを取得し、DHCP デーモンはそれを優先します。
DHCPリースファイルvar/lib/dhcp/dhcpd.leasesを削除するか、DHCPサービスを停止して、リースファイルから問題のスイッチのMACに与えられたIPアドレスリースの出現をすべて編集します。そうすれば、意図したとおりに取得できます。新しいアドレス。