DNS server config restored after reboot

Question

I add new hostname to the /etc/resolve.conf but it reset after I reboot Raspberry pi.

# Generated by resolvconf
nameserver 8.8.8.8

OS is raspbian buster on raspberry pi 4.

Edit: I have to change my dns server because it has problems on the local network.

No i just set new hostname on the resolv.conf and don't know why it happen. — Lymia, Jan 31 '20 at 00:21
This is normal Linux operation. Why do you think you have to change it? — Milliways, Jan 31 '20 at 00:29
@Milliways My dns server has problems on the local network and i have to change dns server. — Lymia, Jan 31 '20 at 00:32
DO NOT add detail in Comments; edit your question. "My dns server has problems on the local network" is meaningless. People will suggest solutions, but unless you clarify the problem may just waste your time. See How to set up networking/WiFi How to set up Static IP Address — Milliways, Jan 31 '20 at 00:37
# Generated by resolvconf essentially means "don't edit this file by hand". — Dmitry Grigoryev, Jan 31 '20 at 15:20

score 1 · Accepted Answer · answered Jan 31 '20 at 00:30

You shouldn't manually update the resolv.conf, because all changes will be overwritten by data that your local DHCP server provides. Therefore, the network manager of Raspbian Buster has configured by /etc/dhcpcd.conf. Every configuration of this config file always is overwriting to other network config files on the OS.

All you need is that you should config your network by /etc/dhcpcd.conf as you want. In this case, follow this procedure:

nano /etc/dhcpcd.conf

Then, add this line:

static domain_name_servers=4.2.2.4 8.8.8.8

Before Raspbian Strech (I'm not sure enough), you could do that. It's some difference we have here and you must follow them to configure the network.

Thank you I set and save the file but it not solved. – Lymia Jan 31 '20 at 00:45 — Lymia, Jan 31 '20 at 00:45
Ah yes. i reboot raspberry its worked. – Lymia Jan 31 '20 at 00:48 — Lymia, Jan 31 '20 at 00:48

DNS server config restored after reboot

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