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#1 2016-07-04 17:10:10
- L1ghtmareI
- Member
- Registered: 2014-08-29
- Posts: 96
No DNS for ~90 seconds after boot
This problem have been reported to have been caused by /etc/resolv.conf being overwritten. However, I've disabled all the services that could display such behavior according to the wiki. My current network setup is NetworkManager on top of wpa_supplicant and systemd-resolved (pulled in as dependencies) and pdnsd, although I'm not completely sure I've configured the latter one right. Some sites (e.g. twitter, news.google) seem to be loading fine and even with updated feeds, however they throw out the same 'could not resolve name' error on reload.
/etc/resolv.conf isn't empty during the period (as opposed to overwriting issue); however, for some reason it doesn't contain my default ISP nameserver.
/etc/resolv.conf: (doesn't change before/after the period)
# This file is managed by systemd-resolved(8). Do not edit.
#
# Third party programs must not access this file directly, but
# only through the symlink at /etc/resolv.conf. To manage
# resolv.conf(5) in a different way, replace the symlink by a
# static file or a different symlink.
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 2001:4860:4860::8888
# Too many DNS servers configured, the following entries may be ignored.
nameserver 2001:4860:4860::8844/etc/pdnsd.conf:
// Sample pdnsd configuration file. Must be customized to obtain a working pdnsd setup!
// Read the pdnsd.conf(5) manpage for an explanation of the options.
// Add or remove '#' in front of options you want to disable or enable, respectively.
// Remove '/*' and '*/' to enable complete sections.
global {
perm_cache=4096;
cache_dir="/var/cache/pdnsd";
# pid_file = /var/run/pdnsd.pid;
run_as="alex";
server_ip = 127.0.0.1; # Use eth0 here if you want to allow other
# machines on your network to query pdnsd.
status_ctl = on;
# paranoid=on; # This option reduces the chance of cache poisoning
# but may make pdnsd less efficient, unfortunately.
query_method=udp_tcp;
min_ttl=15m; # Retain cached entries at least 15 minutes.
max_ttl=30d; # One month.
timeout=10; # Global timeout option (10 seconds).
neg_domain_pol=on;
neg_rrs_pol=on;
par_queries=1;
udpbufsize=1024; # Upper limit on the size of UDP messages.
}
# The following section is most appropriate if you have a fixed connection to
# the Internet and an ISP which provides good DNS servers.
server {
label= "onlime";
ip = 192.168.1.1; # Put your ISP's DNS-server address(es) here.
proxy_only=on; # Do not query any name servers beside your ISP's.
# This may be necessary if you are behind some
# kind of firewall and cannot receive replies
# from outside name servers.
timeout=4; # Server timeout; this may be much shorter
# that the global timeout option.
uptest=if; # Test if the network interface is active.
interface=enp3s0; # The name of the interface to check.
interval=10m; # Check every 10 minutes.
purge_cache=off; # Keep stale cache entries in case the ISP's
# DNS servers go offline.
edns_query=yes; # Use EDNS for outgoing queries to allow UDP messages
# larger than 512 bytes. May cause trouble with some
# legacy systems.
# exclude=.thepiratebay.org, # If your ISP censors certain names, you may
# .thepiratebay.se, # want to exclude them here, and provide an
# .piratebay.org, # alternative server section below that will
# .piratebay.se; # successfully resolve the names.
}
/*
# The following section is more appropriate for dial-up connections.
# Read about how to use pdnsd-ctl for dynamic configuration in the documentation.
server {
label= "dialup";
file = "/etc/ppp/resolv.conf"; # Preferably do not use /etc/resolv.conf
proxy_only=on;
timeout=4;
uptest=if;
interface = ppp0;
interval=10; # Check the interface every 10 seconds.
purge_cache=off;
preset=off;
}
*/
/*
# The servers provided by OpenDNS are fast, but they do not reply with
# NXDOMAIN for non-existant domains, instead they supply you with an
# address of one of their search engines. They also lie about the addresses of
# of the search engines of google, microsoft and yahoo.
# If you do not like this behaviour the "reject" option may be useful.
server {
label = "opendns";
ip = 208.67.222.222, 208.67.220.220;
reject = 208.69.32.0/24, # You may need to add additional address ranges
208.69.34.0/24, # here if the addresses of their search engines
208.67.219.0/24; # change.
reject_policy = fail; # If you do not provide any alternative server
# sections, like the following root-server
# example, "negate" may be more appropriate here.
timeout = 4;
uptest = ping; # Test availability using ICMP echo requests.
ping_timeout = 100; # ping test will time out after 10 seconds.
interval = 15m; # Test every 15 minutes.
preset = off;
}
*/
/*
# This section is meant for resolving from root servers.
server {
label = "root-servers";
root_server = discover; # Query the name servers listed below
# to obtain a full list of root servers.
randomize_servers = on; # Give every root server an equal chance
# of being queried.
ip = 198.41.0.4, # This list will be expanded to the full
192.228.79.201; # list on start up.
timeout = 5;
uptest = query; # Test availability using empty DNS queries.
# query_test_name = .; # To be used if remote servers ignore empty queries.
interval = 30m; # Test every half hour.
ping_timeout = 300; # Test should time out after 30 seconds.
purge_cache = off;
# edns_query = yes; # Use EDNS for outgoing queries to allow UDP messages
# larger than 512 bytes. May cause trouble with some
# legacy systems.
exclude = .localdomain;
policy = included;
preset = off;
}
*/
/*server {
label = "opennic";
ip = 91.214.71.181, 193.183.98.154, 5.9.49.12;#ru it de
reject = 208.69.32.0/24, # You may need to add additional address ranges
208.69.34.0/24, # here if the addresses of their search engines
208.67.219.0/24; # change.
reject_policy = fail; # If you do not provide any alternative server
# sections, like the following root-server
# example, "negate" may be more appropriate here.
timeout = 4;
uptest = ping; # Test availability using ICMP echo requests.
ping_timeout = 100; # ping test will time out after 10 seconds.
interval = 15m; # Test every 15 minutes.
preset = off;
}*/
server {
label = "google";
ip = 8.8.8.8, 8.8.8.4;
timeout = 4;
uptest = ping;
ping_timeout = 100;
interval = 15m;
preset = off;
}
source {
owner=localhost;
# serve_aliases=on;
file="/etc/hosts";
}
/*
include {file="/etc/pdnsd.include";} # Read additional definitions from /etc/pdnsd.include.
*/
rr {
name=localhost;
reverse=on;
a=127.0.0.1;
owner=localhost;
soa=localhost,root.localhost,42,86400,900,86400,86400;
}
neg {
name=doubleclick.net;
types=domain; # This will also block xxx.doubleclick.net, etc.
}
/*
neg {
name=bad.server.com; # Badly behaved server you don't want to connect to.
types=A,AAAA;
}
*/systemctl --type=service
UNIT LOAD ACTIVE SUB DESCRIPTION
alsa-restore.service loaded active exited Save/Restore Sound Card State
blk-availability.service loaded active exited Availability of block devices
bluetooth.service loaded active running Bluetooth service
dbus.service loaded active running D-Bus System Message Bus
dm-event.service loaded active running Device-mapper event daemon
ftpd.service loaded active running FTPD Daemon
haveged.service loaded active running Entropy Harvesting Daemon
ip6tables.service loaded active exited IPv6 Packet Filtering Framework
iptables.service loaded active exited Packet Filtering Framework
kmod-static-nodes.service loaded active exited Create list of required static device nodes for the current kernel
lvm2-lvmetad.service loaded active running LVM2 metadata daemon
lvm2-monitor.service loaded active exited Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling
mpd.service loaded active running Music Player Daemon
NetworkManager.service loaded active running Network Manager
nscd.service loaded active running Name Service Cache Daemon
nvidia-persistenced.service loaded active running NVIDIA Persistence Daemon
pdnsd.service loaded active running proxy name server
polkit.service loaded active running Authorization Manager
razerd.service loaded active running Razer device state daemon
rtkit-daemon.service loaded active running RealtimeKit Scheduling Policy Service
sddm.service loaded active running Simple Desktop Display Manager
systemd-binfmt.service loaded active exited Set Up Additional Binary Formats
systemd-fsck@dev-disk-by\x2duuid-a4b1ffff\x2d079f\x2d437a\x2d809d\x2de464ab5b6d56.service loaded active exited File System Check on /dev/disk/by-uuid/a4b1ffff-079f-437a-809d-e464ab5b6d56
systemd-fsck@dev-disk-by\x2duuid-b8f220e6\x2d818e\x2d4ed8\x2d90aa\x2d4d85b19bbac6.service loaded active exited File System Check on /dev/disk/by-uuid/b8f220e6-818e-4ed8-90aa-4d85b19bbac6
systemd-fsck@dev-disk-by\x2duuid-D86E\x2d8655.service loaded active exited File System Check on /dev/disk/by-uuid/D86E-8655
systemd-journal-flush.service loaded active exited Flush Journal to Persistent Storage
systemd-journald.service loaded active running Journal Service
systemd-logind.service loaded active running Login Service
systemd-random-seed.service loaded active exited Load/Save Random Seed
systemd-remount-fs.service loaded active exited Remount Root and Kernel File Systems
systemd-resolved.service loaded active running Network Name Resolution
systemd-sysctl.service loaded active exited Apply Kernel Variables
systemd-timesyncd.service loaded active running Network Time Synchronization
systemd-tmpfiles-setup-dev.service loaded active exited Create Static Device Nodes in /dev
systemd-tmpfiles-setup.service loaded active exited Create Volatile Files and Directories
systemd-udev-trigger.service loaded active exited udev Coldplug all Devices
systemd-udevd.service loaded active running udev Kernel Device Manager
systemd-update-utmp.service loaded active exited Update UTMP about System Boot/Shutdown
systemd-user-sessions.service loaded active exited Permit User Sessions
systemd-vconsole-setup.service loaded active exited Setup Virtual Console
udisks2.service loaded active running Disk Manager
upower.service loaded active running Daemon for power management
user@1000.service loaded active running User Manager for UID 1000
wpa_supplicant.service loaded active running WPA supplicantNetworkManager config is default.
Thanks in advance.
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#2 2016-07-04 18:06:51
- R00KIE
- Forum Fellow
- From: Between a computer and a chair
- Registered: 2008-09-14
- Posts: 4,734
Re: No DNS for ~90 seconds after boot
I can't think of anything specific, but just to get the ball rolling I'd say check if your clock has the correct time right after boot or if it will later on be corrected when syncing from an ntp server.
R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K
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#3 2016-07-05 05:32:32
- L1ghtmareI
- Member
- Registered: 2014-08-29
- Posts: 96
Re: No DNS for ~90 seconds after boot
it has the correct time. I've actually had that problem quite a while ago it seemed to correct itself several minutes after boot with no DNS issues
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