Pihole does not respond

Please follow the below template, it will help us to help you!

Expected Behaviour:

Over the last few months I have been having issues with PiHole where it is not responding to request for dns names. When I restart PiHole it goes back to working

Actual Behaviour:

It will not respond but I can put in Ip's of local network and am able to connect to http://pi.hole

Debug Token:

Was not able to send the debug token, but if you could let me know where to place the log file I will be happy to follow up with the log. Here is the message I get about the debug log:

  • The debug log can be uploaded to tricorder.pi-hole.net for sharing with developers only.
    [i] Debug script running in automated mode
    * Using curl for transmission.
    * curl failed, contact Pi-hole support for assistance.
    * Error message: curl: (6) Could not resolve host: tricorder.pi-hole.net

[✗] There was an error uploading your debug log.

  • Please try again or contact the Pi-hole team for assistance.
  • A local copy of the debug log can be found at: /var/log/pihole_debug.log

Just DM me the log.

Please run the following command:

sudo service pihole-FTL restart

Then, post the contents of /var/log/pihole-FTL.log , starting towards the end with the line that contains the following message. Post that line and all the lines that follow.

[2021-11-23 13:16:31.626 1155M] Shutting down...

Here is the information you requested:

[2021-11-23 14:14:15.382 782M] Finished final database update (stored 75 queries)
[2021-11-23 14:14:15.382 782M] Waiting for threads to join
[2021-11-23 14:14:15.382 782M] Thread telnet-IPv4 (0) is idle, terminating it.
[2021-11-23 14:14:15.383 782M] Thread telnet-IPv6 (1) is idle, terminating it.
[2021-11-23 14:14:15.383 782M] Thread telnet-socket (2) is idle, terminating it.
[2021-11-23 14:14:15.383 782M] Thread database (3) is idle, terminating it.
[2021-11-23 14:14:15.384 782M] Thread housekeeper (4) is idle, terminating it.
[2021-11-23 14:14:15.384 782M] Thread DNS client (5) is idle, terminating it.
[2021-11-23 14:14:15.385 782M] All threads joined
[2021-11-23 14:14:15.399 782M] ########## FTL terminated after 15h 38m 44s  (code 0)! ##########
[2021-11-23 14:14:16.383 32739M] Using log file /var/log/pihole-FTL.log
[2021-11-23 14:14:16.384 32739M] ########## FTL started on HornDNS! ##########
[2021-11-23 14:14:16.384 32739M] FTL branch: master
[2021-11-23 14:14:16.384 32739M] FTL version: v5.11
[2021-11-23 14:14:16.384 32739M] FTL commit: a296265
[2021-11-23 14:14:16.384 32739M] FTL date: 2021-10-23 19:56:18 +0100
[2021-11-23 14:14:16.384 32739M] FTL user: pihole
[2021-11-23 14:14:16.384 32739M] Compiled for armv7hf (compiled on CI) using arm-linux-gnueabihf-gcc (Debian 6.3.0-18) 6.3.0 20170516
[2021-11-23 14:14:16.384 32739M] Creating mutex
[2021-11-23 14:14:16.384 32739M] Creating mutex
[2021-11-23 14:14:16.386 32739M] Starting config file parsing (/etc/pihole/pihole-FTL.conf)
[2021-11-23 14:14:16.386 32739M]    SOCKET_LISTENING: only local
[2021-11-23 14:14:16.386 32739M]    AAAA_QUERY_ANALYSIS: Show AAAA queries
[2021-11-23 14:14:16.386 32739M]    MAXDBDAYS: max age for stored queries is 365 days
[2021-11-23 14:14:16.386 32739M]    RESOLVE_IPV6: Resolve IPv6 addresses
[2021-11-23 14:14:16.387 32739M]    RESOLVE_IPV4: Resolve IPv4 addresses
[2021-11-23 14:14:16.387 32739M]    DBINTERVAL: saving to DB file every minute
[2021-11-23 14:14:16.387 32739M]    DBFILE: Using /etc/pihole/pihole-FTL.db
[2021-11-23 14:14:16.387 32739M]    MAXLOGAGE: Importing up to 24.0 hours of log data
[2021-11-23 14:14:16.387 32739M]    PRIVACYLEVEL: Set to 0
[2021-11-23 14:14:16.387 32739M]    IGNORE_LOCALHOST: Show queries from localhost
[2021-11-23 14:14:16.387 32739M]    BLOCKINGMODE: Null IPs for blocked domains
[2021-11-23 14:14:16.387 32739M]    ANALYZE_ONLY_A_AND_AAAA: Disabled. Analyzing all queries
[2021-11-23 14:14:16.387 32739M]    DBIMPORT: Importing history from database
[2021-11-23 14:14:16.387 32739M]    PIDFILE: Using /run/pihole-FTL.pid
[2021-11-23 14:14:16.387 32739M]    PORTFILE: Using /run/pihole-FTL.port
[2021-11-23 14:14:16.387 32739M]    SOCKETFILE: Using /run/pihole/FTL.sock
[2021-11-23 14:14:16.387 32739M]    SETUPVARSFILE: Using /etc/pihole/setupVars.conf
[2021-11-23 14:14:16.387 32739M]    MACVENDORDB: Using /etc/pihole/macvendor.db
[2021-11-23 14:14:16.388 32739M]    GRAVITYDB: Using /etc/pihole/gravity.db
[2021-11-23 14:14:16.388 32739M]    PARSE_ARP_CACHE: Active
[2021-11-23 14:14:16.388 32739M]    CNAME_DEEP_INSPECT: Active
[2021-11-23 14:14:16.388 32739M]    DELAY_STARTUP: No delay requested.
[2021-11-23 14:14:16.388 32739M]    BLOCK_ESNI: Enabled, blocking _esni.{blocked domain}
[2021-11-23 14:14:16.388 32739M]    NICE: Set process niceness to -10 (default)
[2021-11-23 14:14:16.388 32739M]    MAXNETAGE: Removing IP addresses and host names from network table after 365 days
[2021-11-23 14:14:16.388 32739M]    NAMES_FROM_NETDB: Enabled, trying to get names from network database
[2021-11-23 14:14:16.388 32739M]    EDNS0_ECS: Overwrite client from ECS information
[2021-11-23 14:14:16.388 32739M]    REFRESH_HOSTNAMES: Periodically refreshing IPv4 names
[2021-11-23 14:14:16.388 32739M]    RATE_LIMIT: Rate-limiting client making more than 1000 queries in 60 seconds
[2021-11-23 14:14:16.388 32739M]    REPLY_ADDR4: Automatic interface-dependent detection of address
[2021-11-23 14:14:16.388 32739M]    REPLY_ADDR6: Automatic interface-dependent detection of address
[2021-11-23 14:14:16.388 32739M]    SHOW_DNSSEC: Enabled, showing automatically generated DNSSEC queries
[2021-11-23 14:14:16.388 32739M]    MOZILLA_CANARY: Enabled
[2021-11-23 14:14:16.389 32739M]    PIHOLE_PTR: internal PTR generation enabled (pi.hole)
[2021-11-23 14:14:16.389 32739M]    ADDR2LINE: Enabled
[2021-11-23 14:14:16.389 32739M]    REPLY_WHEN_BUSY: Permit queries when the database is busy
[2021-11-23 14:14:16.389 32739M]    BLOCK_TTL: 2 seconds
[2021-11-23 14:14:16.389 32739M]    BLOCK_ICLOUD_PR: Enabled
[2021-11-23 14:14:16.389 32739M] Finished config file parsing
[2021-11-23 14:14:16.390 32739M] Database version is 9
[2021-11-23 14:14:16.390 32739M] Resizing "FTL-strings" from 40960 to (81920 * 1) == 81920 (/dev/shm: 1.1MB used, 484.0MB total, FTL uses 1.1MB)
[2021-11-23 14:14:16.391 32739M] Imported 0 alias-clients
[2021-11-23 14:14:16.391 32739M] Database successfully initialized
[2021-11-23 14:14:16.394 32739M] New upstream server: 8.8.4.4:53 (0/256)
[2021-11-23 14:14:16.398 32739M] New upstream server: 8.8.8.8:53 (1/256)
[2021-11-23 14:14:16.431 32739M] Resizing "FTL-domains" from 4096 to (512 * 16) == 8192 (/dev/shm: 1.1MB used, 484.0MB total, FTL uses 1.1MB)
[2021-11-23 14:14:16.448 32739M] Resizing "FTL-queries" from 180224 to (8192 * 44) == 360448 (/dev/shm: 1.1MB used, 484.0MB total, FTL uses 1.1MB)
[2021-11-23 14:14:16.453 32739M] Resizing "FTL-domains" from 8192 to (768 * 16) == 12288 (/dev/shm: 1.3MB used, 484.0MB total, FTL uses 1.3MB)
[2021-11-23 14:14:16.499 32739M] Resizing "FTL-queries" from 360448 to (12288 * 44) == 540672 (/dev/shm: 1.3MB used, 484.0MB total, FTL uses 1.3MB)
[2021-11-23 14:14:16.548 32739M] Resizing "FTL-domains" from 12288 to (1024 * 16) == 16384 (/dev/shm: 1.5MB used, 484.0MB total, FTL uses 1.5MB)
[2021-11-23 14:14:16.557 32739M] Resizing "FTL-queries" from 540672 to (16384 * 44) == 720896 (/dev/shm: 1.5MB used, 484.0MB total, FTL uses 1.5MB)
[2021-11-23 14:14:16.620 32739M] Resizing "FTL-queries" from 720896 to (20480 * 44) == 901120 (/dev/shm: 1.7MB used, 484.0MB total, FTL uses 1.7MB)
[2021-11-23 14:14:16.754 32739M] Resizing "FTL-queries" from 901120 to (24576 * 44) == 1081344 (/dev/shm: 1.9MB used, 484.0MB total, FTL uses 1.9MB)
[2021-11-23 14:14:16.823 32739M] Resizing "FTL-domains" from 16384 to (1280 * 16) == 20480 (/dev/shm: 2.1MB used, 484.0MB total, FTL uses 2.0MB)
[2021-11-23 14:14:16.890 32739M] Resizing "FTL-queries" from 1081344 to (28672 * 44) == 1261568 (/dev/shm: 2.1MB used, 484.0MB total, FTL uses 2.0MB)
[2021-11-23 14:14:17.049 32739M] Resizing "FTL-queries" from 1261568 to (32768 * 44) == 1441792 (/dev/shm: 2.2MB used, 484.0MB total, FTL uses 2.2MB)
[2021-11-23 14:14:17.208 32739M] Resizing "FTL-queries" from 1441792 to (36864 * 44) == 1622016 (/dev/shm: 2.4MB used, 484.0MB total, FTL uses 2.4MB)
[2021-11-23 14:14:17.309 32739M] Resizing "FTL-domains" from 20480 to (1536 * 16) == 24576 (/dev/shm: 2.6MB used, 484.0MB total, FTL uses 2.6MB)
[2021-11-23 14:14:17.368 32739M] Resizing "FTL-queries" from 1622016 to (40960 * 44) == 1802240 (/dev/shm: 2.6MB used, 484.0MB total, FTL uses 2.6MB)
[2021-11-23 14:14:17.524 32739M] Resizing "FTL-queries" from 1802240 to (45056 * 44) == 1982464 (/dev/shm: 2.8MB used, 484.0MB total, FTL uses 2.8MB)
[2021-11-23 14:14:17.684 32739M] Resizing "FTL-queries" from 1982464 to (49152 * 44) == 2162688 (/dev/shm: 3.0MB used, 484.0MB total, FTL uses 3.0MB)
[2021-11-23 14:14:17.840 32739M] Resizing "FTL-queries" from 2162688 to (53248 * 44) == 2342912 (/dev/shm: 3.1MB used, 484.0MB total, FTL uses 3.1MB)
[2021-11-23 14:14:18.007 32739M] Resizing "FTL-queries" from 2342912 to (57344 * 44) == 2523136 (/dev/shm: 3.3MB used, 484.0MB total, FTL uses 3.3MB)
[2021-11-23 14:14:18.055 32739M] Resizing "FTL-domains" from 24576 to (1792 * 16) == 28672 (/dev/shm: 3.5MB used, 484.0MB total, FTL uses 3.5MB)
[2021-11-23 14:14:18.214 32739M] Resizing "FTL-queries" from 2523136 to (61440 * 44) == 2703360 (/dev/shm: 3.5MB used, 484.0MB total, FTL uses 3.5MB)
[2021-11-23 14:14:18.375 32739M] Resizing "FTL-queries" from 2703360 to (65536 * 44) == 2883584 (/dev/shm: 3.7MB used, 484.0MB total, FTL uses 3.7MB)
[2021-11-23 14:14:18.541 32739M] Resizing "FTL-queries" from 2883584 to (69632 * 44) == 3063808 (/dev/shm: 3.9MB used, 484.0MB total, FTL uses 3.9MB)
[2021-11-23 14:14:18.700 32739M] Resizing "FTL-queries" from 3063808 to (73728 * 44) == 3244032 (/dev/shm: 4.1MB used, 484.0MB total, FTL uses 4.0MB)
[2021-11-23 14:14:18.767 32739M] Resizing "FTL-domains" from 28672 to (2048 * 16) == 32768 (/dev/shm: 4.2MB used, 484.0MB total, FTL uses 4.2MB)
[2021-11-23 14:14:18.884 32739M] Resizing "FTL-queries" from 3244032 to (77824 * 44) == 3424256 (/dev/shm: 4.2MB used, 484.0MB total, FTL uses 4.2MB)
[2021-11-23 14:14:19.072 32739M] Resizing "FTL-queries" from 3424256 to (81920 * 44) == 3604480 (/dev/shm: 4.4MB used, 484.0MB total, FTL uses 4.4MB)
[2021-11-23 14:14:19.271 32739M] Resizing "FTL-queries" from 3604480 to (86016 * 44) == 3784704 (/dev/shm: 4.6MB used, 484.0MB total, FTL uses 4.6MB)
[2021-11-23 14:14:19.475 32739M] Resizing "FTL-queries" from 3784704 to (90112 * 44) == 3964928 (/dev/shm: 4.8MB used, 484.0MB total, FTL uses 4.8MB)
[2021-11-23 14:14:19.613 32739M] Resizing "FTL-strings" from 81920 to (122880 * 1) == 122880 (/dev/shm: 5.0MB used, 484.0MB total, FTL uses 4.9MB)
[2021-11-23 14:14:19.651 32739M] Resizing "FTL-domains" from 32768 to (2304 * 16) == 36864 (/dev/shm: 5.0MB used, 484.0MB total, FTL uses 5.0MB)
[2021-11-23 14:14:19.713 32739M] Resizing "FTL-queries" from 3964928 to (94208 * 44) == 4145152 (/dev/shm: 5.0MB used, 484.0MB total, FTL uses 5.0MB)
[2021-11-23 14:14:19.882 32739M] Resizing "FTL-queries" from 4145152 to (98304 * 44) == 4325376 (/dev/shm: 5.2MB used, 484.0MB total, FTL uses 5.2MB)
[2021-11-23 14:14:19.984 32739M] Resizing "FTL-domains" from 36864 to (2560 * 16) == 40960 (/dev/shm: 5.4MB used, 484.0MB total, FTL uses 5.3MB)
[2021-11-23 14:14:20.038 32739M] Resizing "FTL-queries" from 4325376 to (102400 * 44) == 4505600 (/dev/shm: 5.4MB used, 484.0MB total, FTL uses 5.4MB)
[2021-11-23 14:14:20.187 32739M] Resizing "FTL-queries" from 4505600 to (106496 * 44) == 4685824 (/dev/shm: 5.5MB used, 484.0MB total, FTL uses 5.5MB)
[2021-11-23 14:14:20.294 32739M] Resizing "FTL-queries" from 4685824 to (110592 * 44) == 4866048 (/dev/shm: 5.7MB used, 484.0MB total, FTL uses 5.7MB)
[2021-11-23 14:14:20.321 32739M] Resizing "FTL-domains" from 40960 to (2816 * 16) == 45056 (/dev/shm: 5.9MB used, 484.0MB total, FTL uses 5.9MB)
[2021-11-23 14:14:20.390 32739M] Resizing "FTL-queries" from 4866048 to (114688 * 44) == 5046272 (/dev/shm: 5.9MB used, 484.0MB total, FTL uses 5.9MB)
[2021-11-23 14:14:20.492 32739M] Resizing "FTL-queries" from 5046272 to (118784 * 44) == 5226496 (/dev/shm: 6.1MB used, 484.0MB total, FTL uses 6.1MB)
[2021-11-23 14:14:20.594 32739M] Resizing "FTL-queries" from 5226496 to (122880 * 44) == 5406720 (/dev/shm: 6.3MB used, 484.0MB total, FTL uses 6.3MB)
[2021-11-23 14:14:20.695 32739M] Resizing "FTL-queries" from 5406720 to (126976 * 44) == 5586944 (/dev/shm: 6.5MB used, 484.0MB total, FTL uses 6.4MB)
[2021-11-23 14:14:20.801 32739M] Resizing "FTL-queries" from 5586944 to (131072 * 44) == 5767168 (/dev/shm: 6.6MB used, 484.0MB total, FTL uses 6.6MB)
[2021-11-23 14:14:20.907 32739M] Resizing "FTL-queries" from 5767168 to (135168 * 44) == 5947392 (/dev/shm: 6.8MB used, 484.0MB total, FTL uses 6.8MB)
[2021-11-23 14:14:21.004 32739M] Resizing "FTL-queries" from 5947392 to (139264 * 44) == 6127616 (/dev/shm: 7.0MB used, 484.0MB total, FTL uses 7.0MB)
[2021-11-23 14:14:21.081 32739M] Resizing "FTL-domains" from 45056 to (3072 * 16) == 49152 (/dev/shm: 7.2MB used, 484.0MB total, FTL uses 7.2MB)
[2021-11-23 14:14:21.133 32739M] Resizing "FTL-queries" from 6127616 to (143360 * 44) == 6307840 (/dev/shm: 7.2MB used, 484.0MB total, FTL uses 7.2MB)
[2021-11-23 14:14:21.323 32739M] Resizing "FTL-queries" from 6307840 to (147456 * 44) == 6488064 (/dev/shm: 7.4MB used, 484.0MB total, FTL uses 7.3MB)
[2021-11-23 14:14:21.514 32739M] Resizing "FTL-queries" from 6488064 to (151552 * 44) == 6668288 (/dev/shm: 7.5MB used, 484.0MB total, FTL uses 7.5MB)
[2021-11-23 14:14:21.687 32739M] Resizing "FTL-queries" from 6668288 to (155648 * 44) == 6848512 (/dev/shm: 7.7MB used, 484.0MB total, FTL uses 7.7MB)
[2021-11-23 14:14:21.882 32739M] Resizing "FTL-queries" from 6848512 to (159744 * 44) == 7028736 (/dev/shm: 7.9MB used, 484.0MB total, FTL uses 7.9MB)
[2021-11-23 14:14:22.069 32739M] Resizing "FTL-queries" from 7028736 to (163840 * 44) == 7208960 (/dev/shm: 8.1MB used, 484.0MB total, FTL uses 8.1MB)
[2021-11-23 14:14:22.260 32739M] Resizing "FTL-queries" from 7208960 to (167936 * 44) == 7389184 (/dev/shm: 8.3MB used, 484.0MB total, FTL uses 8.2MB)
[2021-11-23 14:14:22.329 32739M] Resizing "FTL-domains" from 49152 to (3328 * 16) == 53248 (/dev/shm: 8.4MB used, 484.0MB total, FTL uses 8.4MB)
[2021-11-23 14:14:22.429 32739M] Resizing "FTL-queries" from 7389184 to (172032 * 44) == 7569408 (/dev/shm: 8.4MB used, 484.0MB total, FTL uses 8.4MB)
[2021-11-23 14:14:22.618 32739M] Resizing "FTL-queries" from 7569408 to (176128 * 44) == 7749632 (/dev/shm: 8.6MB used, 484.0MB total, FTL uses 8.6MB)
[2021-11-23 14:14:22.847 32739M] Resizing "FTL-queries" from 7749632 to (180224 * 44) == 7929856 (/dev/shm: 8.8MB used, 484.0MB total, FTL uses 8.8MB)
[2021-11-23 14:14:22.873 32739M] Resizing "FTL-strings" from 122880 to (163840 * 1) == 163840 (/dev/shm: 9.0MB used, 484.0MB total, FTL uses 9.0MB)
[2021-11-23 14:14:23.030 32739M] Resizing "FTL-queries" from 7929856 to (184320 * 44) == 8110080 (/dev/shm: 9.0MB used, 484.0MB total, FTL uses 9.0MB)
[2021-11-23 14:14:23.213 32739M] Resizing "FTL-queries" from 8110080 to (188416 * 44) == 8290304 (/dev/shm: 9.2MB used, 484.0MB total, FTL uses 9.2MB)
[2021-11-23 14:14:23.398 32739M] Resizing "FTL-queries" from 8290304 to (192512 * 44) == 8470528 (/dev/shm: 9.4MB used, 484.0MB total, FTL uses 9.4MB)
[2021-11-23 14:14:23.403 32739M] Resizing "FTL-domains" from 53248 to (3584 * 16) == 57344 (/dev/shm: 9.6MB used, 484.0MB total, FTL uses 9.6MB)
[2021-11-23 14:14:23.591 32739M] Resizing "FTL-queries" from 8470528 to (196608 * 44) == 8650752 (/dev/shm: 9.6MB used, 484.0MB total, FTL uses 9.6MB)
[2021-11-23 14:14:23.754 32739M] Resizing "FTL-queries" from 8650752 to (200704 * 44) == 8830976 (/dev/shm: 9.7MB used, 484.0MB total, FTL uses 9.7MB)
[2021-11-23 14:14:23.930 32739M] Resizing "FTL-queries" from 8830976 to (204800 * 44) == 9011200 (/dev/shm: 9.9MB used, 484.0MB total, FTL uses 9.9MB)
[2021-11-23 14:14:24.093 32739M] Resizing "FTL-queries" from 9011200 to (208896 * 44) == 9191424 (/dev/shm: 10.1MB used, 484.0MB total, FTL uses 10.1MB)
[2021-11-23 14:14:24.253 32739M] Resizing "FTL-queries" from 9191424 to (212992 * 44) == 9371648 (/dev/shm: 10.3MB used, 484.0MB total, FTL uses 10.3MB)
[2021-11-23 14:14:24.418 32739M] Resizing "FTL-queries" from 9371648 to (217088 * 44) == 9551872 (/dev/shm: 10.5MB used, 484.0MB total, FTL uses 10.5MB)
[2021-11-23 14:14:24.564 32739M] Resizing "FTL-queries" from 9551872 to (221184 * 44) == 9732096 (/dev/shm: 10.6MB used, 484.0MB total, FTL uses 10.6MB)
[2021-11-23 14:14:24.747 32739M] Resizing "FTL-queries" from 9732096 to (225280 * 44) == 9912320 (/dev/shm: 10.8MB used, 484.0MB total, FTL uses 10.8MB)
[2021-11-23 14:14:24.923 32739M] Resizing "FTL-queries" from 9912320 to (229376 * 44) == 10092544 (/dev/shm: 11.0MB used, 484.0MB total, FTL uses 11.0MB)
[2021-11-23 14:14:25.073 32739M] Resizing "FTL-queries" from 10092544 to (233472 * 44) == 10272768 (/dev/shm: 11.2MB used, 484.0MB total, FTL uses 11.2MB)
[2021-11-23 14:14:25.233 32739M] Resizing "FTL-domains" from 57344 to (3840 * 16) == 61440 (/dev/shm: 11.4MB used, 484.0MB total, FTL uses 11.4MB)
[2021-11-23 14:14:25.237 32739M] Resizing "FTL-queries" from 10272768 to (237568 * 44) == 10452992 (/dev/shm: 11.4MB used, 484.0MB total, FTL uses 11.4MB)
[2021-11-23 14:14:25.378 32739M] Imported 236341 queries from the long-term database
[2021-11-23 14:14:25.379 32739M]  -> Total DNS queries: 236341
[2021-11-23 14:14:25.379 32739M]  -> Cached DNS queries: 179842
[2021-11-23 14:14:25.380 32739M]  -> Forwarded DNS queries: 36879
[2021-11-23 14:14:25.380 32739M]  -> Blocked DNS queries: 18572
[2021-11-23 14:14:25.380 32739M]  -> Unknown DNS queries: 1
[2021-11-23 14:14:25.380 32739M]  -> Unique domains: 3605
[2021-11-23 14:14:25.380 32739M]  -> Unique clients: 29
[2021-11-23 14:14:25.380 32739M]  -> Known forward destinations: 2
[2021-11-23 14:14:25.380 32739M] Successfully accessed setupVars.conf
[2021-11-23 14:14:25.382 32739M] listening on 0.0.0.0 port 53
[2021-11-23 14:14:25.383 32739M] listening on :: port 53
[2021-11-23 14:14:25.388 306M] PID of FTL process: 306
[2021-11-23 14:14:25.389 306M] INFO: FTL is running as user pihole (UID 999)
[2021-11-23 14:14:25.389 306/T307] Listening on port 4711 for incoming IPv4 telnet connections
[2021-11-23 14:14:25.390 306/T308] Listening on port 4711 for incoming IPv6 telnet connections
[2021-11-23 14:14:25.390 306/T309] Listening on Unix socket
[2021-11-23 14:14:25.391 306M] Reloading DNS cache
[2021-11-23 14:14:25.533 306M] Blocking status is enabled
[2021-11-23 14:14:26.526 306/T310] Compiled 0 whitelist and 14 blacklist regex filters for 29 clients in 108.3 msec

This evening HornDNS (which runs PiHole) stopped responding so I had to reboot it. The debugging information after the reboot is https://tricorder.pi-hole.net/GxmKmzxK/
Not sure if this will help determine what happened.

This would tend to indicate a problem at the OS level, if the entire device stopped responding. I would look in file /var/log/syslog for any errors, along with the output of this command from the terminal:

dmesg

Your second debug log is completely fine.


However, your first one is kind of strange. Despite Pi-hole still running (FTL), it does not block anymore nor does it respond to DHCP requests (it's your DHCP server as well). There have been also no queries during the debug log run, despite you have a quite high overall query volume each day.

[i] 2021-11-22:22:33:01 debug log has been initialized.

[i] dig return code: 10
[i] dig response: dig: couldn't get address for 'ns1.pi-hole.net': failure

[✓] IPv4 address(es) bound to the eth0 interface:
192.168.254.1/24

127.0.0.1:5335 unbound (IPv4)
127.0.0.1:8953 unbound (IPv4)
[53] is in use by pihole-FTL
[53] is in use by pihole-FTL

*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
[✗] Failed to resolve sensacja00c.site on lo (127.0.0.1)
[✗] Failed to resolve sensacja00c.site on eth0 (192.168.254.1)

*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 10 seconds)
Scanning all your interfaces for DHCP servers
Timeout: 10 seconds

DHCP packets received on interface wlan0: 0
DHCP packets received on interface lo: 0
DHCP packets received on interface eth0: 0

*** [ DIAGNOSING ]: Pi-hole-FTL full status
● pihole-FTL.service - LSB: pihole-FTL daemon
Loaded: loaded (/etc/init.d/pihole-FTL; generated)
Active: active (exited) since Wed 2021-11-17 16:43:12 CST; 5 days ago
Docs: man:systemd-sysv-generator(8)
Process: 615 ExecStart=/etc/init.d/pihole-FTL start (code=exited, status=0/SUCCESS)

Nov 17 16:43:08 HornDNS systemd[1]: Starting LSB: pihole-FTL daemon...
Nov 17 16:43:08 HornDNS pihole-FTL[615]: Not running
Nov 17 16:43:08 HornDNS su[634]: (to pihole) root on none
Nov 17 16:43:08 HornDNS su[634]: pam_unix(su:session): session opened for user pihole by (uid=0)
Nov 17 16:43:12 HornDNS pihole-FTL[615]: FTL started!
Nov 17 16:43:12 HornDNS systemd[1]: Started LSB: pihole-FTL daemon.

DHCP_ACTIVE=true
DHCP_START=192.168.254.50
DHCP_END=192.168.254.250
IPV4_ADDRESS=192.168.254.1/24

PIHOLE_DNS_1=8.8.8.8
PIHOLE_DNS_2=8.8.4.4


-----head of pihole-FTL.log------
[2021-11-22 07:17:48.819 780M] Resizing "FTL-dns-cache" from 266240 to (16896 * 16) == 270336 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 09:25:26.303 780M] Resizing "FTL-domains" from 172032 to (11008 * 16) == 176128 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 09:25:54.306 780M] Resizing "FTL-dns-cache" from 270336 to (17152 * 16) == 274432 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 14:53:26.850 780M] Resizing "FTL-dns-cache" from 274432 to (17408 * 16) == 278528 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 17:28:13.152 780M] Resizing "FTL-domains" from 176128 to (11264 * 16) == 180224 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 20:37:32.278 780M] Resizing "FTL-dns-cache" from 278528 to (17664 * 16) == 282624 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)

-----tail of pihole-FTL.log------
[2021-11-22 07:17:48.819 780M] Resizing "FTL-dns-cache" from 266240 to (16896 * 16) == 270336 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 09:25:26.303 780M] Resizing "FTL-domains" from 172032 to (11008 * 16) == 176128 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 09:25:54.306 780M] Resizing "FTL-dns-cache" from 270336 to (17152 * 16) == 274432 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 14:53:26.850 780M] Resizing "FTL-dns-cache" from 274432 to (17408 * 16) == 278528 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 17:28:13.152 780M] Resizing "FTL-domains" from 176128 to (11264 * 16) == 180224 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)
[2021-11-22 20:37:32.278 780M] Resizing "FTL-dns-cache" from 278528 to (17664 * 16) == 282624 (/dev/shm: 11.6MB used, 484.0MB total, FTL uses 11.6MB)

-rw-r--r-- 1 root root 47 Nov 17 16:43 /etc/resolv.conf
nameserver 127.0.0.1

-----tail of pihole.log------
Nov 22 22:26:42 dnsmasq[780]: LAST QUERY