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31 lines
2.0 KiB
ReStructuredText
31 lines
2.0 KiB
ReStructuredText
Configure DHCP
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==============
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Add the relevant networks into the DHCP configuration, refer to: :ref:`Setup-dhcp`
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Add the defined nodes into the DHCP configuration, refer to:
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`XCAT_pLinux_Clusters/#configure-dhcp <http://localhost/fake_todo>`_
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In the large cluster, the size of dhcp lease file "/var/lib/dhcpd/dhcpd.leases" on the DHCP server will grow over time. At around 100MB in size, the DHCP server will take a long time to respond to DHCP requests from clients and cause DHCP timeouts: ::
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...
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPDISCOVER from 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPOFFER on 9.114.39.101 to 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPREQUEST for 9.114.39.101 (9.114.39.157) from 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPACK on 9.114.39.101 to 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPDECLINE of 9.114.39.101 from 00:0a:f7:73:7d:d0 via eth0: not found
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPDISCOVER from 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPOFFER on 9.114.39.101 to 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPREQUEST for 9.114.39.101 (9.114.39.157) from 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPACK on 9.114.39.101 to 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPDECLINE of 9.114.39.101 from 00:0a:f7:73:7d:d0 via eth0: not found
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPDISCOVER from 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPOFFER on 9.114.39.101 to 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPREQUEST for 9.114.39.101 (9.114.39.157) from 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPACK on 9.114.39.101 to 00:0a:f7:73:7d:d0 via eth0
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Mar 2 01:59:10 c656ems2 dhcpd: DHCPDECLINE of 9.114.39.101 from 00:0a:f7:73:7d:d0 via eth0: not found
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...
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The solution is simply to restart the dhcpd service or run ``makedhcp -n``.
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