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Bug 490800 - net-misc/dhcp - install systemd service files
Summary: net-misc/dhcp - install systemd service files
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Server (show other bugs)
Hardware: All Linux
: Normal normal
Assignee: Gentoo's Team for Core System packages
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: install-systemd-unit
  Show dependency tree
 
Reported: 2013-11-09 03:46 UTC by Darko Luketic
Modified: 2015-12-29 20:45 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


Attachments
dhcpd4.service (dhcpd4.service,214 bytes, text/plain)
2013-11-09 03:46 UTC, Darko Luketic
Details
dhcpd6.service (dhcpd6.service,214 bytes, text/plain)
2013-11-09 03:47 UTC, Darko Luketic
Details

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Description Darko Luketic 2013-11-09 03:46:43 UTC
Created attachment 362826 [details]
dhcpd4.service

from archlinux
there were none after transition.
Comment 1 Darko Luketic 2013-11-09 03:47:41 UTC
Created attachment 362828 [details]
dhcpd6.service
Comment 2 Pacho Ramos gentoo-dev 2013-11-11 21:37:34 UTC
I cannot run that command:
nov 11 22:36:01 belkin5 dhcpd[19798]: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
nov 11 22:36:01 belkin5 dhcpd[19798]: Can't open lease database /var/lib/dhcp/dhcpd.leases: No such file or directory --
nov 11 22:36:01 belkin5 dhcpd[19798]: check for failed database rewrite attempt!
nov 11 22:36:01 belkin5 dhcpd[19798]: Please read the dhcpd.leases manual page if you
nov 11 22:36:01 belkin5 dhcpd[19798]: don't know what to do about this.
nov 11 22:36:01 belkin5 dhcpd[19798]: nov 11 22:36:01 belkin5 dhcpd[19798]: This version of ISC DHCP is based on the release available
nov 11 22:36:01 belkin5 dhcpd[19798]: on ftp.isc.org.  Features have been added and other changes
nov 11 22:36:01 belkin5 dhcpd[19798]: have been made to the base software release in order to make
nov 11 22:36:01 belkin5 dhcpd[19798]: it work better with this distribution.
nov 11 22:36:01 belkin5 dhcpd[19798]: nov 11 22:36:01 belkin5 dhcpd[19798]: Please report for this software via the Gentoo Bugzilla site:
nov 11 22:36:01 belkin5 dhcpd[19798]: http://bugs.gentoo.org/
nov 11 22:36:01 belkin5 dhcpd[19798]: nov 11 22:36:01 belkin5 dhcpd[19798]: exiting.

Reading the man page, looks like I need to simply run:
touch DBDIR/dhcpd.leases

Why isn't this done by ebuild? (I guess init.d would also benefit from it)
Comment 3 Mike Gilbert gentoo-dev 2013-11-11 22:14:41 UTC
> Why isn't this done by ebuild? (I guess init.d would also benefit from it)

It is already done in /etc/init.d/dhcpd:

    local leasefile="$(get_var lease-file-name /var/lib/dhcp/${SVCNAME}.leases)"
    checkpath -f -o dhcp:dhcp "${chroot}${leasefile}"
Comment 4 Pacho Ramos gentoo-dev 2013-11-12 19:07:39 UTC
I was thinking on doing it at install time to let init.d and systemd unit to not need to handle it by separate
Comment 5 Mike Gilbert gentoo-dev 2013-11-12 19:19:20 UTC
Given that the init script allows you to have multiple instances of dhcpd with separate lease files, I don't see how you could create the lease file(s) in the ebuild.
Comment 6 Pacho Ramos gentoo-dev 2013-11-12 19:50:41 UTC
Well, I was thinking on simply creating var/lib/dhcp/dhcpd.leases and dhcpd6.leases as fedora and arch are doing
Comment 7 Pacho Ramos gentoo-dev 2013-12-22 11:09:13 UTC
(In reply to Pacho Ramos from comment #6)
> Well, I was thinking on simply creating var/lib/dhcp/dhcpd.leases and
> dhcpd6.leases as fedora and arch are doing

Any problem with doing that?
Comment 8 Mike Gilbert gentoo-dev 2013-12-22 19:52:23 UTC
(In reply to Pacho Ramos from comment #7)

I guess that's fine.
Comment 9 SpanKY gentoo-dev 2013-12-22 23:03:19 UTC
(In reply to Pacho Ramos from comment #6)

because you cannot rely on /var/lib ever being filled out.  it is correct for the init script to create the dirs/files as needed with the right perms.
Comment 10 Pacho Ramos gentoo-dev 2013-12-23 08:53:01 UTC
Then, either we create it in unit file or tell people to do that manually :/
Comment 11 SpanKY gentoo-dev 2013-12-23 10:35:17 UTC
(In reply to Pacho Ramos from comment #10)

what people write in systemd unit files matters not to me.  i'm merely telling you "no" to putting it into the ebuild ;).
Comment 12 Thomas Deutschmann (RETIRED) gentoo-dev 2013-12-23 13:12:29 UTC
(In reply to SpanKY from comment #9)
> (In reply to Pacho Ramos from comment #6)
> 
> because you cannot rely on /var/lib ever being filled out.  it is correct
> for the init script to create the dirs/files as needed with the right perms.

Wait, are you saying we cannot rely on /var/lib? Can you please share more information about that?

I am asking because after I read your comment I went to "/var/lib" on one of my test systems, stopped various services (nginx, ntp, firewalls, redis, vnstat, powerdns), removed their folders from "/var/lib" and tried to restart the services. All mentioned services failed. So are these maintainers all doing something wrong, because they don't ensure that these folders are present/in an expected state in the runscript (I tested with OpenRC, not systemd!)?

Should we use tmpfiles (https://blog.flameeyes.eu/2013/01/the-unsolved-problem-of-the-init-scripts) for that (this would allow us to keep the maintenance overhead low; could be used from systemd and OpenRC; checkpath isn't available from systemd/systemd folk doesn't like scripts)?

My problem with tmpfiles is: You install something new. You cannot use it until you restart tmpfiles. I haven't seen any ebuild yet telling me to restart tmpfiles so I'd like to hear some best practice.

Thanks.
Comment 13 SpanKY gentoo-dev 2013-12-23 20:00:41 UTC
(In reply to Thomas D. from comment #12)

yes, for many services, you should be able to do:
  /etc/init.d/foo stop
  rm -rf /var/lib/*
  /etc/init.d/foo start

that doesn't apply to all services as some, like mysql/postgres need to seed a lot of state.  but they have `emerge --config <package>` to regenerate things because the operation is non-trivial and expensive.

that rule doesn't apply to dhcpd thought because it simply needs the dir to exist and then it can do what it needs to do.

at some point we'll start filing bugs for /var/lib offenders.  for now, it's up to maintainers (i.e. me) to enforce it.
Comment 14 Pacho Ramos gentoo-dev 2013-12-26 12:58:58 UTC
+*dhcp-4.2.5_p1-r2 (26 Dec 2013)
+
+  26 Dec 2013; Pacho Ramos <pacho@gentoo.org> +dhcp-4.2.5_p1-r2.ebuild,
+  +files/dhcpd.tmpfiles, +files/dhcpd4.service, +files/dhcpd6.service,
+  +files/dhcrelay4.service, +files/dhcrelay4.service.conf,
+  +files/dhcrelay6.service, +files/dhcrelay6.service.conf:
+  Add unit file (#490800)
+