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    Unable to start Unbound after switch away from KEA

    Scheduled Pinned Locked Moved General pfSense Questions
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    • M
      michmoor LAYER 8 Rebel Alliance @stephenw10
      last edited by

      @stephenw10

      Starting unbound the way i did did allow the service to show green in the pfsense GUI but no DNS resolution was occurring

       ps auxx | grep unbound
root    73481   0.0  0.2   12860   1936  -  Is   19:55      0:00.02 /usr/local/sbin/dhcpleases -l /var/dhcpd/var/db/dhcpd.leases -d moore.lan -p /var/run/unbound.pid -u /var/unbound/d
unbound 87474   0.0  0.7   40588   6956  -  Is   Thu23      0:18.40 /usr/local/sbin/unbound
root       27   0.0  0.2   12952   2064  0  S+   19:58      0:00.01 grep unbound
[24.11-RELEASE][admin@nyc-fw1-inet.moore.lan]/root: kill -9 87474
[24.11-RELEASE][admin@nyc-fw1-inet.moore.lan]/root: ps auxx | grep unbound
root   73481   0.0  0.2   12860   1936  -  Is   19:55      0:00.02 /usr/local/sbin/dhcpleases -l /var/dhcpd/var/db/dhcpd.leases -d moore.lan -p /var/run/unbound.pid -u /var/unbound/dh
root    2975   0.0  0.2   12952   2064  0  S+   19:59      0:00.01 grep unbound
[24.11-RELEASE][admin@nyc-fw1-inet.moore.lan]/root:

      I have re-saved the unbound configuration again, apply changes , and still the service remains down with the following error seen in the log

      dc726a88-bdbe-413d-9ebf-fc9b95f4ae5f-image.png

      Firewall: NetGate,Palo Alto-VM,Juniper SRX
      Routing: Juniper, Arista, Cisco
      Switching: Juniper, Arista, Cisco
      Wireless: Unifi, Aruba IAP
      JNCIP,CCNP Enterprise

      M 1 Reply Last reply Reply Quote 0
      • M
        michmoor LAYER 8 Rebel Alliance @michmoor
        last edited by

        Manually starting the service

         unbound -c /var/unbound/unbound.conf
/var/unbound/unbound.conf:17: error: number expected
/var/unbound/unbound.conf:17: error: unknown keyword 'yes'
/var/unbound/unbound.conf:33: error: number expected
read /var/unbound/unbound.conf failed: 3 errors in configuration file
[1733101412] unbound[3798:0] fatal error: Could not read config file: /var/unbound/unbound.conf. Maybe try unbound -dd, it stays on the commandline to see more errors, or unbound-checkconf

        Here is the unbound.conf again.

         cat /var/unbound/unbound.conf
##########################
# Unbound Configuration
##########################

##
# Server configuration
##
server:

chroot: /var/unbound
username: "unbound"
directory: "/var/unbound"
pidfile: "/var/run/unbound.pid"
use-syslog: yes
port: 53
verbosity:
hide-identity: yes
hide-version: yes
harden-glue: yes
do-ip4: yes
do-ip6: yes
do-udp: yes
do-tcp: yes
do-daemonize: yes
module-config: "validator iterator"
unwanted-reply-threshold: 0
num-queries-per-thread: 4096
jostle-timeout: 200
infra-keep-probing: yes
infra-host-ttl: 900
infra-cache-numhosts: 10000
outgoing-num-tcp:
incoming-num-tcp:
edns-buffer-size: 1332
cache-max-ttl: 86400
cache-min-ttl: 0
harden-dnssec-stripped: yes
msg-cache-size: 4m
rrset-cache-size: 8m

num-threads: 2
msg-cache-slabs: 2
rrset-cache-slabs: 2
infra-cache-slabs: 2
key-cache-slabs: 2
outgoing-range: 4096
so-rcvbuf: 12m
auto-trust-anchor-file: /var/unbound/root.key
prefetch: no
prefetch-key: no
use-caps-for-id: no
serve-expired: no
sock-queue-timeout: 0
aggressive-nsec: no
# Statistics
# Unbound Statistics
statistics-interval: 0
extended-statistics: yes
statistics-cumulative: yes

# TLS Configuration
tls-cert-bundle: "/etc/ssl/cert.pem"

# Interface IP addresses to bind to
interface-automatic: yes


# DNS Rebinding




# Access lists
include: /var/unbound/access_lists.conf

# Static host entries
include: /var/unbound/host_entries.conf

# dhcp lease entries
include: /var/unbound/dhcpleases_entries.conf



# Domain overrides
include: /var/unbound/domainoverrides.conf
# Forwarding
forward-zone:
        name: "."
        forward-addr: 9.9.9.9
        forward-addr: 149.112.112.112




###
# Remote Control Config
###
include: /var/unbound/remotecontrol.conf

        Firewall: NetGate,Palo Alto-VM,Juniper SRX
        Routing: Juniper, Arista, Cisco
        Switching: Juniper, Arista, Cisco
        Wireless: Unifi, Aruba IAP
        JNCIP,CCNP Enterprise

        M 1 Reply Last reply Reply Quote 0
        • M
          michmoor LAYER 8 Rebel Alliance @michmoor
          last edited by

          Counting the lines in the conf file, Line 17 is the following

          hide-version: yes

          I went into the GUI, DNS Resolver , Advanced Settings, and unchecked Hide Version.
          Apply changes.
          DNS Resolver starts without issues and name resolution finally works.

          @stephenw10 what is that setting and why did having it checked break Unbound? Seems like a redmine issue but i don't know what the fault is.
          Checking my 6100 HighAvailability pair, they have it enabled and no Unbound issues post upgrade. Even did a failover to test and it works.

          Any guidance you can offer i would greatly appreciate it!

          Firewall: NetGate,Palo Alto-VM,Juniper SRX
          Routing: Juniper, Arista, Cisco
          Switching: Juniper, Arista, Cisco
          Wireless: Unifi, Aruba IAP
          JNCIP,CCNP Enterprise

          GertjanG 1 Reply Last reply Reply Quote 0
          • GertjanG
            Gertjan @michmoor
            last edited by

            @michmoor

            This one :

            a82c85f9-4bcf-42d1-a940-79213a4aeccf-image.png

            runs because you've set :

            22f836bd-0629-45cc-905d-a69f7320c418-image.png

            If it is possible : disable that option.

            dhcpdleases restarts unbound every time a new DHCP lease event is received.
            This can give you the impression that 'unbound' wasn't running as it was 'restarting again (and again, and again etc etc).
            Unbound restarts do take some time, several seconds, or more.

            You see the command line option of that dhcpdleases process ?

            -p /var/run/unbound.pid

            which means that when you restart manually unbound, the PID changes.
            dhcpdleases also has to be restarted - not sure if you can do this manually.

            No "help me" PM's please. Use the forum, the community will thank you.
            Edit : and where are the logs ??

            M 1 Reply Last reply Reply Quote 0
            • M
              michmoor LAYER 8 Rebel Alliance @Gertjan
              last edited by

              @Gertjan Thanks Gertjan but you are misunderstanding the problem.

              DNS resolver wasn't running due to a parameter set it did not recognize or like for some reason. After negating that in the advanced options in Unbound, it started up successfully and resolved hostnames.

              The issue here is why was it broken in the first place. The only connection i have to KEA is that it was the last change i made on the system before i reverted back.

              Firewall: NetGate,Palo Alto-VM,Juniper SRX
              Routing: Juniper, Arista, Cisco
              Switching: Juniper, Arista, Cisco
              Wireless: Unifi, Aruba IAP
              JNCIP,CCNP Enterprise

              1 Reply Last reply Reply Quote 0
              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                Line 17 is actually hide-identity: yes. But that's not the issue that's a default setting. The problem is that you had no log verbosity value on the line before. It's expecting a number for the log verbosity and sees not-a-number at the start of line 17.

                Resaving the Unbound Advanced page will have added that value back.

                The same applies to the values for:

                outgoing-num-tcp: 
incoming-num-tcp:

                However I have no idea what might have caused those to not be populated. Unbound should never have allowed those empty values.

                M 1 Reply Last reply Reply Quote 0
                • M
                  michmoor LAYER 8 Rebel Alliance @stephenw10
                  last edited by

                  @stephenw10 I gotcha.
                  As mentioned, the last change I made was the KEA switchover. I don't know if KEA is involved with Unbound in this case, but that was the last change I made. I don't understand what could suddenly cause Unbound to find a problem with the conf file. Outside of configuring Unbound via the GUI as far as i know there is no direct way to modify the configuration and have it saved. I could be wrong of course.

                  Firewall: NetGate,Palo Alto-VM,Juniper SRX
                  Routing: Juniper, Arista, Cisco
                  Switching: Juniper, Arista, Cisco
                  Wireless: Unifi, Aruba IAP
                  JNCIP,CCNP Enterprise

                  1 Reply Last reply Reply Quote 0
                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    Indeed. I can see why it rejected that conf file because there are values missing. What I can't understand is how that was ever generated and passed the Unbound tests. 🤔

                    If you revert that change to the Unbound settings I imagine it will still start no problem.

                    M 1 Reply Last reply Reply Quote 0
                    • M
                      michmoor LAYER 8 Rebel Alliance @stephenw10
                      last edited by

                      @stephenw10 I reverted my change in Unbound and here is the conf file now.

                      ##########################
# Unbound Configuration
##########################

##
# Server configuration
##
server:

chroot: /var/unbound
username: "unbound"
directory: "/var/unbound"
pidfile: "/var/run/unbound.pid"
use-syslog: yes
port: 53
verbosity: 1
hide-identity: yes
hide-version: yes
harden-glue: yes
do-ip4: yes
do-ip6: yes
do-udp: yes
do-tcp: yes
do-daemonize: yes
module-config: "validator iterator"
unwanted-reply-threshold: 0
num-queries-per-thread: 512
jostle-timeout: 200
infra-keep-probing: yes
infra-host-ttl: 900
infra-cache-numhosts: 10000
outgoing-num-tcp: 10
incoming-num-tcp: 10
edns-buffer-size: 1332
cache-max-ttl: 86400
cache-min-ttl: 0
harden-dnssec-stripped: yes
msg-cache-size: 4m
rrset-cache-size: 8m

num-threads: 2
msg-cache-slabs: 2
rrset-cache-slabs: 2
infra-cache-slabs: 2
key-cache-slabs: 2
outgoing-range: 4096
so-rcvbuf: 12m
auto-trust-anchor-file: /var/unbound/root.key
prefetch: no
prefetch-key: no
use-caps-for-id: no
serve-expired: no
sock-queue-timeout: 0
aggressive-nsec: no
# Statistics
# Unbound Statistics
statistics-interval: 0
extended-statistics: yes
statistics-cumulative: yes

# TLS Configuration
tls-cert-bundle: "/etc/ssl/cert.pem"

# Interface IP addresses to bind to
interface-automatic: yes


# DNS Rebinding




# Access lists
include: /var/unbound/access_lists.conf

# Static host entries
include: /var/unbound/host_entries.conf

# dhcp lease entries
include: /var/unbound/dhcpleases_entries.conf



# Domain overrides
include: /var/unbound/domainoverrides.conf
# Forwarding
forward-zone:
	name: "."
	forward-addr: 9.9.9.9
	forward-addr: 149.112.112.112




###
# Remote Control Config
###
include: /var/unbound/remotecontrol.conf

                      Firewall: NetGate,Palo Alto-VM,Juniper SRX
                      Routing: Juniper, Arista, Cisco
                      Switching: Juniper, Arista, Cisco
                      Wireless: Unifi, Aruba IAP
                      JNCIP,CCNP Enterprise

                      1 Reply Last reply Reply Quote 0
                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        Yup so now those 3 values are all populated. And I imagine it starts fine?

                        M 1 Reply Last reply Reply Quote 0
                        • M
                          michmoor LAYER 8 Rebel Alliance @stephenw10
                          last edited by

                          @stephenw10

                          Yep starts up fine, no issues.

                          Unless i can reproduce it or others have a similar issue might have to throw this in the mystery box.

                          Firewall: NetGate,Palo Alto-VM,Juniper SRX
                          Routing: Juniper, Arista, Cisco
                          Switching: Juniper, Arista, Cisco
                          Wireless: Unifi, Aruba IAP
                          JNCIP,CCNP Enterprise

                          1 Reply Last reply Reply Quote 1
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