Bug 1752569
| Summary: | [RHEL-7] Change dhcp_release to use default address when no IP subnet matches | |||
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| Product: | Red Hat Enterprise Linux 7 | Reporter: | Andreas Karis <akaris> | |
| Component: | dnsmasq | Assignee: | Petr Menšík <pemensik> | |
| Status: | CLOSED ERRATA | QA Contact: | Petr Sklenar <psklenar> | |
| Severity: | high | Docs Contact: | ||
| Priority: | high | |||
| Version: | 7.8 | CC: | agurenko, akaris, amuller, atragler, bcafarel, bfournie, bhaley, chrisw, dsneddon, harsh.kotak, hjensas, jslagle, marjones, ohochman, owalsh, pdancak, pemensik, pmosko, psklenar, pvlasin, qe-baseos-daemons, ralonsoh, scohen, shdunne, slinaber, thozza, yobshans | |
| Target Milestone: | rc | Keywords: | AutoVerified, TestCaseProvided, Triaged, ZStream | |
| Target Release: | --- | Flags: | pdancak:
needinfo+
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| Hardware: | Unspecified | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | dnsmasq-2.76-11.el7 | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | 1694094 | |||
| : | 1757351 (view as bug list) | Environment: | ||
| Last Closed: | 2020-09-29 19:31:26 UTC | Type: | --- | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | 1694094 | |||
| Bug Blocks: | 1757351 | |||
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Description
Andreas Karis
2019-09-16 16:27:21 UTC
Hi Petr, I did look at the possibility of using D-BUS, but it was going to consume a lot more resources (one additional d-bus daemon per namespace), and make the configuration of DHCP in Openstack much more complicated. http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2019q2/013041.html Since we are moving away from using dnsmasq in later versions of RH Openstack I didn't feel the investment was worth it. Unless there is a simpler way to use it? I think it should be possible to use shared d-bus for more namespaces and use namespace in dnsmasq service name. But that might not be simpler setup in such case. Ok, if dnsmasq is going to be replaced, it might be a bit simpler. Found example to do it on stackexchange [1]. It would need just one proxy service for all namespaces. But shared bus might be vulnerable to misconfigurations. 1. https://unix.stackexchange.com/questions/184964/connect-with-d-bus-in-a-network-namespace (In reply to Brian Haley from comment #9) > Since we are moving away from using dnsmasq in later versions of RH > Openstack I didn't feel the investment was worth it. Unless there is a > simpler way to use it? What services will provide DHCP and DNS in later versions of RH Openstack? It seems to me original patch to utility is missing correction of failed send. It make send work if there is at least one IPv4 address on the interface. If there is none, it would still fail. I think in this case, the tool must report error and return non-zero exit code. There is no such change even on upstream. I would request adding it. Just asking on behalf of customer if this will be verified soon? Thanks. (In reply to Brian Haley from comment #31) > Just asking on behalf of customer if this will be verified soon? Thanks. This bug was fixes in 7.7.z, bug #1757351. Customers should have already this fix available. This bug is still open to ensure new Y-stream contains it as well. Any customer should have update to dnsmasq-2.76-10.el7_7.1 available long before this is closed. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Low: dnsmasq security and bug fix update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2020:3878 |