2026-04-29

続々々fr24feed

またしてもマイナーverupで死亡したので戻す

$ /usr/bin/fr24feed --config-file=/etc/fr24feed.ini
Segmentation fault

$ ldd /usr/bin/fr24feed
not a dynamic executable
$ uname -m
armv6l

$ sudo cat /var/log/dpkg.log | grep fr24feed
2026-04-26 11:09:58 install fr24feed:armhf <none> 1.0.56-0

2026-04-29 08:00:12 status installed fr24feed:armhf 1.0.56-1

forum.flightradar24.com

$ sudo apt-mark hold fr24feed
fr24feed set on hold.
$ wget https://repo-feed.flightradar24.com/rpi_binaries/fr24feed_1.0.56-0_armhf.deb

fr24feed_1.0.56-0_armhf.deb 100%[================================================================>] 5.26M 788KB/s in 6.9s

$ sudo dpkg -i fr24feed_1.0.56-0_armhf.deb
dpkg: warning: downgrading fr24feed (1.0.56-1) to (1.0.56-0)
(Reading database ... 73361 files and directories currently installed.)
Preparing to unpack fr24feed_1.0.56-0_armhf.deb ...
Unpacking fr24feed (1.0.56-0) over (1.0.56-1) ...
Setting up fr24feed (1.0.56-0) ...
useradd: user 'fr24' already exists
$ /usr/bin/fr24feed --version
1.0.56-0

$ sudo systemctl restart fr24feed

$ fr24feed-status
FR24 Feeder/Decoder Process: running.
FR24 Stats Timestamp: 2026-04-29 05:44:20.
FR24 Link: connected [UDP].
FR24 Radar: T-RJxxxx
FR24 Tracked AC: 73.
Receiver: connected (3477 MSGS/0 SYNC).

2026-04-26

続々fr24feed

fr24feedどころかSDカード死亡で他のフィードも全滅

どうにかkarnel panicを復旧しようと、別PCでubuntu liveを立ち上げてfsckするもエラーが治らないので、諦めて新規構築することにした。

（SDカードのイメージバックアップは取ってあったが、aomei backupperのライセンス切れでリストア不可だった）

OSも古いので、Raspberry Pi Imagerの推奨通り Raspberry Pi OS lite (Trixie Debian13）でセットアップ開始。

fr24feedのインストールスクリプトを起動するも、早速pgp署名で躓く

（最新だけにセキュリティ要件が厳しいのは後で知った）

key追加したり、[trusted=yes]入れたりしてなんとかfr24feedを復旧

$ fr24feed-status
FR24 Feeder/Decoder Process: running.
FR24 Stats Timestamp: 2026-04-26 02:48:42.
FR24 Link: connected [UDP].
FR24 Radar: T-RJxxxx.
FR24 Tracked AC: 16.
Receiver: connected (7227 MSGS/0 SYNC).

続いてpiawareをインストールしようとしたが、Trixie用パッケージが必要で

且つPi2Bではまともに動かないようなので停めた。

github.com

2026-03-05

続fr24feed死亡

同時フィードのadsbexchange-mlatが落ちてた

root@raspberrypi:~# systemctl status adsbexchange-mlat
● adsbexchange-mlat.service - adsbexchange-mlat
Loaded: loaded (/lib/systemd/system/adsbexchange-mlat.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Thu 2026-03-05 00:01:44 JST; 24s ago
Process: 17654 ExecStart=/usr/local/share/adsbexchange/adsbexchange-mlat.sh (code=exited, status=1/FAILURE)
Main PID: 17654 (code=exited, status=1/FAILURE)
CPU: 1.022s

root@raspberrypi:~# journalctl -u adsbexchange-mlat -n 50 --no-pager

Mar 05 00:08:02 raspberrypi systemd[1]: Started adsbexchange-mlat.
Mar 05 00:08:06 raspberrypi adsbexchange-mlat[18424]: Traceback (most recent call last):
Mar 05 00:08:06 raspberrypi adsbexchange-mlat[18424]: File "/usr/local/share/adsbexchange/venv/bin/mlat-client", line 22, in <module>
Mar 05 00:08:06 raspberrypi adsbexchange-mlat[18424]: import mlat.client.version
Mar 05 00:08:06 raspberrypi adsbexchange-mlat[18424]: ModuleNotFoundError: No module named 'mlat'
Mar 05 00:08:06 raspberrypi systemd[1]: adsbexchange-mlat.service: Main process exited, code=exited, status=1/FAILURE
Mar 05 00:08:06 raspberrypi systemd[1]: adsbexchange-mlat.service: Failed with result 'exit-code'.
Mar 05 00:08:06 raspberrypi systemd[1]: adsbexchange-mlat.service: Consumed 1.002s CPU time.
Mar 05 00:08:37 raspberrypi systemd[1]: adsbexchange-mlat.service: Scheduled restart job, restart counter is at 1451.
Mar 05 00:08:37 raspberrypi systemd[1]: Stopped adsbexchange-mlat.

bulleseyeにアップグレードしたので、pythonも2.7 -> 3.9になったのでその影響らしい

必要なモジュールをインストールしたら復活した

root@raspberrypi:~# apt install python3 python3-pip python3-setuptools

python3 is already the newest version (3.9.2-3).
python3 set to manually installed.
Suggested packages:
python-setuptools-doc
The following NEW packages will be installed:
python3-pip python3-setuptools python3-wheel
0 upgraded, 3 newly installed, 0 to remove and 2 not upgraded.

root@raspberrypi:~# systemctl status adsbexchange-mlat

● adsbexchange-mlat.service - adsbexchange-mlat
Loaded: loaded (/lib/systemd/system/adsbexchange-mlat.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2026-03-05 00:44:15 JST; 1s ago
Main PID: 23044 (adsbexchange-ml)
Tasks: 2 (limit: 875)
CPU: 393ms
CGroup: /system.slice/adsbexchange-mlat.service
tq23044 /bin/bash /usr/local/share/adsbexchange/adsbexchange-mlat.sh
mq23052 /usr/local/share/adsbexchange/venv/bin/python3 /usr/local/share/adsbexchange/venv/bin/mlat-client --input-type dump109>

Mar 05 00:44:15 raspberrypi systemd[1]: Stopped adsbexchange-mlat.
Mar 05 00:44:15 raspberrypi systemd[1]: adsbexchange-mlat.service: Consumed 1.016s CPU time.
Mar 05 00:44:15 raspberrypi systemd[1]: Started adsbexchange-mlat.

と思ったらまた落ちた

● adsbexchange-mlat.service - adsbexchange-mlat
Loaded: loaded (/lib/systemd/system/adsbexchange-mlat.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Thu 2026-03-05 00:55:18 JST; 23s ago
Process: 24327 ExecStart=/usr/local/share/adsbexchange/adsbexchange-mlat.sh (code=exited, status=1/FAILURE)
Main PID: 24327 (code=exited, status=1/FAILURE)

venvを一旦削除してmlat-clientを再インストール

root@raspberrypi:~# rm -rf /usr/local/share/adsbexchange/venv

root@raspberrypi:~# python3 -m venv /usr/local/share/adsbexchange/venv

root@raspberrypi:~# sudo /usr/local/share/adsbexchange/venv/bin/python3 -m pip install git+https://github.com/ADSBexchange/mlat-client
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Collecting git+https://github.com/ADSBexchange/mlat-client
Cloning https://github.com/ADSBexchange/mlat-client to /tmp/pip-req-build-_4jxb52a
Running command git clone -q https://github.com/ADSBexchange/mlat-client /tmp/pip-req-build-_4jxb52a
Using legacy 'setup.py install' for MlatClient, since package 'wheel' is not installed.
Installing collected packages: MlatClient
Running setup.py install for MlatClient ... done
Successfully installed MlatClient-0.4.2
root@raspberrypi:~# systemctl restart adsbexchange-mlat

● adsbexchange-mlat.service - adsbexchange-mlat
Loaded: loaded (/lib/systemd/system/adsbexchange-mlat.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2026-03-05 02:20:00 JST; 1min 21s ago
Main PID: 1475 (adsbexchange-ml)
Tasks: 2 (limit: 875)
CPU: 2.918s
CGroup: /system.slice/adsbexchange-mlat.service
tq1475 /bin/bash /usr/local/share/adsbexchange/adsbexchange-mlat.sh
mq1483 /usr/local/share/adsbexchange/venv/bin/python3 /usr/local/share/adsbexchange/venv/bin/mlat-client --input-type dump1090>

Mar 05 02:20:13 raspberrypi adsbexchange-mlat[1483]: Handshake complete: Compression zlib2, UDP transport disabled, Split sync disabled
Mar 05 02:20:13 raspberrypi adsbexchange-mlat[1483]: Input connected to 127.0.0.1:30005
Mar 05 02:20:13 raspberrypi adsbexchange-mlat[1483]: Input format changed to BEAST, 12MHz clock
Mar 05 02:20:36 raspberrypi adsbexchange-mlat[1483]: peer_count: 80 outlier_percent: 0.0 bad_sync_timeout: 15
Mar 05 02:20:52 raspberrypi adsbexchange-mlat[1483]: peer_count: 83 outlier_percent: 1.8 bad_sync_timeout: 90
Mar 05 02:21:07 raspberrypi adsbexchange-mlat[1483]: peer_count: 87 outlier_percent: 3.5 bad_sync_timeout: 180
Mar 05 02:21:07 raspberrypi adsbexchange-mlat[1483]: Receiver: connected 39.2 msg/s received 19.4 msg/s processed (49%)
Mar 05 02:21:07 raspberrypi adsbexchange-mlat[1483]: Server: ready 0.0 kB/s from server 0.1 kB/s to server
Mar 05 02:21:07 raspberrypi adsbexchange-mlat[1483]: Results: 0.0 positions/minute
Mar 05 02:21:07 raspberrypi adsbexchange-mlat[1483]: Aircraft: 2 of 6 Mode S, 10 of 11 ADS-B used

2026-03-04

fr24feed死亡

fr24feedのオフライン通知が来た

Dear Host,

Our monitoring shows that your feed T-RJXXxx has been offline since 2026-03-02 23:22:25 UTC. If you are having problems with your receiver setup, please feel free to contact us at support@fr24.com for advice and assistance.You can also find answers to most data sharing questions here.

Many thanks in advance for your assistance and for supporting Flightradar24.

今までも何回かあったが、今回は1.0.55-0への自動アップグレードが原因ぽい

pi2Bをbusterで動かしているので対応外になったのか？

いい加減ハードOS共に更新しないと、と思っていたが最近のpi5の価格高騰で買いそびれていた。

とりあえずbullseye（これも今年サポート切れ予定だが）で延命とエラー修正を図る

root@raspberrypi:~# cat /var/log/dpkg.log.1 | grep fr24feed
2026-03-03 08:27:06 upgrade fr24feed:armhf 1.0.54-0 1.0.55-0
2026-03-03 08:27:06 status half-configured fr24feed:armhf 1.0.54-0
2026-03-03 08:27:07 status unpacked fr24feed:armhf 1.0.54-0
2026-03-03 08:27:08 status half-installed fr24feed:armhf 1.0.54-0
2026-03-03 08:28:33 status unpacked fr24feed:armhf 1.0.55-0
2026-03-03 08:28:35 configure fr24feed:armhf 1.0.55-0 <none>
2026-03-03 08:28:35 status unpacked fr24feed:armhf 1.0.55-0
2026-03-03 08:28:35 status half-configured fr24feed:armhf 1.0.55-0
2026-03-03 08:29:00 status installed fr24feed:armhf 1.0.55-0

root@raspberrypi:~# systemctl status fr24feed.service
● fr24feed.service - Flightradar24 Decoder & Feeder
Loaded: loaded (/etc/systemd/system/fr24feed.service; enabled; vendor preset: enabled)
Active: activating (start-pre) since Wed 2026-03-04 00:44:00 JST; 1s ago
Process: 2987 ExecStartPre=/usr/lib/fr24/install_dump1090.sh (code=exited, status=0/SUCCESS)
Process: 2993 ExecStartPre=/usr/lib/fr24/unregister_kernel_modules.sh (code=exited, status=0/SUCCESS)
Cntrl PID: 3003 (create_missing_)
Tasks: 2 (limit: 875)
CGroup: /system.slice/fr24feed.service
tq3003 /bin/bash /usr/lib/fr24/create_missing_directories.sh
mq3005 touch /dev/shm/decoder.txt

Mar 04 00:44:00 raspberrypi systemd[1]: Starting Flightradar24 Decoder & Feeder...
Mar 04 00:44:01 raspberrypi unregister_kernel_modules.sh[2993]: rmmod: ERROR: Module dvb_usb_rtl28xxu is not currently loaded
Mar 04 00:44:01 raspberrypi unregister_kernel_modules.sh[2993]: rmmod: ERROR: Module rtl2832 is not currently loaded
Mar 04 00:44:01 raspberrypi unregister_kernel_modules.sh[2993]: rmmod: ERROR: Module e4000 is not currently loaded

root@raspberrypi:~# journalctl -xe
-- The process' exit code is 'killed' and its exit status is 11.
Mar 04 00:44:30 raspberrypi systemd[1]: fr24feed.service: Failed with result 'signal'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- The unit fr24feed.service has entered the 'failed' state with result 'signal'.
Mar 04 00:44:30 raspberrypi systemd[1]: Failed to start Flightradar24 Decoder & Feeder.
-- Subject: A start job for unit fr24feed.service has failed
-- Defined-By: systemd
-- Support: https://www.debian.org/support

このへんを参考に

e-i-te.dev

bullseyeにアップグレード後も変化無し

root@raspberrypi:~# cat /etc/debian_version
11.11
root@raspberrypi:~# cat /usr/lib/os-release
PRETTY_NAME="Raspbian GNU/Linux 11 (bullseye)"
NAME="Raspbian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

root@raspberrypi:~# systemctl status fr24feed.service
● fr24feed.service - Flightradar24 Decoder & Feeder
Loaded: loaded (/etc/systemd/system/fr24feed.service; enabled; vendor preset: enabled)
Active: activating (start-pre) since Wed 2026-03-04 10:05:23 JST; 1s ago
Process: 1499 ExecStartPre=/usr/lib/fr24/install_dump1090.sh (code=exited, status=0/SUCCESS)
Cntrl PID: 1508 (unregister_kern)
Tasks: 2 (limit: 875)
CPU: 190ms
CGroup: /system.slice/fr24feed.service
tq1508 /bin/bash /usr/lib/fr24/unregister_kernel_modules.sh
mq1511 rmmod rtl2832

Mar 04 10:05:23 raspberrypi systemd[1]: Starting Flightradar24 Decoder & Feeder...
Mar 04 10:05:25 raspberrypi unregister_kernel_modules.sh[1510]: rmmod: ERROR: Module dvb_usb_rtl28xxu is not currently loaded
Mar 04 10:05:25 raspberrypi unregister_kernel_modules.sh[1511]: rmmod: ERROR: Module rtl2832 is not currently loaded

fr24フォーラムで同様のトピックを発見、おとなしく1.0.54-0へダウングレード

forum.flightradar24.com

half-configuredがとても気になるがとりあえずfeed復活

root@raspberrypi:~# journalctl -u fr24feed -ef
Mar 04 11:39:32 raspberrypi fr24feed[1076]: [main][i]FR24 Feeder/Decoder
Mar 04 11:39:32 raspberrypi fr24feed[1076]: [main][i]Version: 1.0.54-0/generic
Mar 04 11:39:32 raspberrypi fr24feed[1076]: [main][i]Built on Sep 26 2025 11:29:43 (T202509261117/Linux/static_armel)
Mar 04 11:39:32 raspberrypi fr24feed[1076]: [main][i]Running on: raspbian="11"

root@raspberrypi:~# systemctl status fr24feed.service
● fr24feed.service - Flightradar24 Decoder & Feeder
Loaded: loaded (/etc/systemd/system/fr24feed.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2026-03-04 11:39:25 JST; 12min ago
Process: 1038 ExecStartPre=/usr/bin/fr24feed --validate-config --config-file=/etc/fr24feed.ini (code=exited, status=0/SUCCESS)
Main PID: 1076 (fr24feed)
Tasks: 10 (limit: 875)
CPU: 23.444s
CGroup: /system.slice/fr24feed.service
mq1076 /usr/bin/fr24feed

Mar 04 11:50:43 raspberrypi fr24feed[1076]: [feed][i]sent 3,51 AC

root@raspberrypi:~# cat /var/log/dpkg.log | grep fr24feed
2026-03-04 11:37:37 status half-installed fr24feed:armhf 1.0.55-0
2026-03-04 11:39:32 status unpacked fr24feed:armhf 1.0.54-0
2026-03-04 11:39:35 configure fr24feed:armhf 1.0.54-0 1.0.54-0
2026-03-04 11:39:35 status half-configured fr24feed:armhf 1.0.54-0
2026-03-04 11:39:45 status installed fr24feed:armhf 1.0.54-0

最後に自動更新offを忘れずに

root@raspberrypi:~# apt-mark hold fr24feed
fr24feed set on hold.

去年のうちにpi5買っておけばよかった（泣）