CA-412636: hostname changed to localhost with static IP and reboot #6546
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I can't find commit 0307adc6, do you have the full git hash and title? |
According to https://www.freedesktop.org/software/systemd/man/latest/hostname.html Systemd set hostname with following sequence - kernel parameter, systemd.hostname - static hostname in /etc/hostname - transient hostname like DHCP - localhost at systemd compile time Once the host is configured with static IP and reboot, it would just lost its hostname as no DHCP or static IP available. However, the hostname is critical to AD function as it construct the machine account. The hostname should be persisted as static name during joining AD, this is also what PBIS does. Note: the static hostname is not cleaned during domain leave. This is by intention to avoid losing hostname after reboot with static IP cba2f1d tried to resovle the issue and update /etc/resolv.conf However, /etc/resolv.conf does not help and conflict with xcp-networkd, as networkd override the configure every 5 minutes Here we just revert the resolv.conf update. Other parts of that commit can still benifit as it push the hostname to DNS Signed-off-by: Lin Liu <Lin.Liu01@cloud.com>
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Sorry, I got the commit ID from wrong branch (my dev branch before merged to master), thus wrong commit id. |
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So the approach of rewriting |
writing However, simply write to that file conflict with networkd, I may update later to call networkd to update the domain later, (update_config). but that will require more test. This PR overriding the hostname just follows what PBIS does, and it resolve the localhost issue. |
According to
https://www.freedesktop.org/software/systemd/man/latest/hostname.html Systemd set hostname with following sequence
Once the host is configured with static IP and reboot, it would just lost its hostname as no DHCP or static IP available.
However, the hostname is critical to AD function as it construct the machine account.
The hostname should be persisted as static name during joining AD, this is also what PBIS does.
Note: the static hostname is not cleaned during domain leave. This is by intention to avoid losing hostname after reboot with static IP
0307adc6 tried to resovle the issue and update /etc/resolv.conf However, /etc/resolv.conf does not help and conflict with xcp-networkd, as networkd override the configure every 5 minutes Here we just revert the resolv.conf update