ClearFoundation Tracker - ClearOS | |||||
| View Issue Details | |||||
| ID | Project | Category | View Status | Date Submitted | Last Update |
| 0020421 | ClearOS | app-docker - Docker | public | 2018-06-20 01:56 | 2021-11-11 05:52 |
| Reporter | NickH | ||||
| Assigned To | |||||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | suspended | ||
| Platform | OS | OS Version | |||
| Product Version | 7.4.0 Updates | ||||
| Target Version | Fixed in Version | ||||
| Summary | 0020421: Docker bypasses any DNS Servers set in ClearOS and uses OpenDNS | ||||
| Description | When docker loads, to define its DNS servers it attempts to read /etc/resolv.conf then discounts loopback. As it finds nothing there it falls back to using OpenDNS and generated the following line in the logs: Jun 14 18:45:58 server dockerd-current: time="2018-06-14T18:45:58.083955517+01:00" level=info msg="No non-localhost DNS nameservers are left in resolv.conf. Using default external servers: [nameserver 8.8.8.8 nameserver 8.8.4.4]" Jun 1 Set like this, it is impossible for docker to resolve hostnames of local devices. In ClearGLASS in an environment of mixed cloud and local servers, you would be able to address the cloud servers by FQDN but the local ones would have to be addressed by IP. The solution is to add a line to /etc/docker/daemon.json between the braces: "dns": ["172.18.0.1"] This can be programatically maintained to track the docker0 LAN interface. | ||||
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| Additional Information | |||||
| Tags | No tags attached. | ||||
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| Issue History | |||||
| Date Modified | Username | Field | Change | ||
| 2018-06-20 01:56 | NickH | New Issue | |||
| 2018-06-20 07:39 | user2 | Status | new => confirmed | ||
| 2021-11-11 05:47 | NickH | Summary | Docker bypasses any DNS Servers set in ClearOS and uses OpenVPN => Docker bypasses any DNS Servers set in ClearOS and uses OpenDNS | ||
| 2021-11-11 05:52 | NickH | Note Added: 0016251 | |||
| 2021-11-11 05:52 | NickH | Status | confirmed => closed | ||
| 2021-11-11 05:52 | NickH | Resolution | open => suspended | ||
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