Irritating Changes in Various Distributions

Redhat Enterprise Linux 5

  • automount status: Under RHEL4, running 'automount status' would basically 'diff' the contents of /etc/autofs.master against the process list, to determine whether or not all the automounts which the system was configured to run, were still running. RHEL5 removed this very useful feature entirely, and simply lets you know if its PID file is still runnning.

Fedora Core 9

  • dhcpd.conf and subnets: dhcpd has become a lot more stringent about subnet checking than it ever used to be. Now it is necessary to add "option all-subnets-local true;" to the top of your dhcpd.conf file if you happen to be getting a lot of entries that look like "dhcpd: DHCPREQUEST for ( from 00:17:3f:20:8e:48 via wrong network." or "DHCPREQUEST for from 00:08:89:e6:36:a8 via wrong network.", when things used to work before. Another issue is that dhcpd.conf now looks at the first interface on your system (not taking into account aliased IPs on the same physical interface) to see if it's got real control of the subnets in dhcpd.conf. I fixed that by rearranging my interfaces so that eth1 was the one on the subnet, and that my external IP was an alias.

Fedora Core 8

  • /var/log file rotation convention: This isn't actually irritating. The rotation system has been changed, so now instead of 'messages.4', you see 'messages.20080129' for instance. What CAN be irritating is that the rotation seems to go by alphabetical order. So .1 will probably always be there, displacing .2008*. I'm not 100% sure on this; will check Ares eventually to see if it's actually the case, since I already cleaned the .? entries out on my laptop.
  • Portmap is replaced with rpcbind: This is an irritating set of fun and games. Did you know that NFS processes actually care a lot about rpcbind? Namely, if you restart rpcbind, the NFS services will linger around, but won't actually do anything useful. If you restart rpcbind, you also have to restart nfs after that in order to be able to do anything useful with your fileserver.

-- SeanNewton - 29 Jan 2008

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Topic revision: r2 - 2008-07-30 - SeanNewton
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