502 Bad gateway

[bmp]

Details:
FreshRSS: 1.27.1~ynh1
Yunohost: 12.1.38

1. When I tried to access the application, I got the error:

502 Bad Gateway

If you see this page, your connection with the server is working but the internal service providing this path is not responding.

Administrator, make sure that the service is running, and check its logs if it is not. The Services page is in your webadmin, under Tools > Services.

Thank you for using YunoHost.

2. When I checked the servies, fressrss wasn't enabled!
3. When I navigated to the app list: It said The app can be upgraded from version 1.27.1~ynh1 to 1.28.0~ynh1
4. When I tried to upgrade the app from the page, I get the following error File or folder '/etc/php/8.4/fpm/pool.d/freshrss.conf' to be backed up does not exist. The detailed logs are at https://paste.yunohost.org/raw/uhayimuqiq
5. Here are the php-fpm services that are active:

php8.0-fpm: 
  configuration: valid
  description: The PHP 8.0 FastCGI Process Manager
  last_state_change: 2026-01-08 12:47:24
  start_on_boot: enabled
  status: running
php8.2-fpm: 
  configuration: valid
  description: The PHP 8.2 FastCGI Process Manager
  last_state_change: 2026-01-08 12:47:25
  start_on_boot: enabled
  status: running
php8.3-fpm: 
  configuration: valid
  description: The PHP 8.3 FastCGI Process Manager
  last_state_change: 2026-01-08 12:47:24
  start_on_boot: enabled
  status: running
php8.4-fpm: 
  configuration: valid
  description: The PHP 8.4 FastCGI Process Manager
  last_state_change: 2026-01-08 12:47:25
  start_on_boot: enabled
  status: running

6. Here is the output of the respective folders:

>ls /etc/php/8.0/fpm/pool.d/
baikal.conf  www.conf
>ls /etc/php/8.2/fpm/pool.d/
qr.conf  shaarli.conf  wallabag2.conf  www.conf
>ls /etc/php/8.3/fpm/pool.d/
indexhibit.conf  www.conf
>ls /etc/php/8.4/fpm/pool.d/
www.conf

How can I fix this?

[bmp]

And here is the output of sudo yunohost app info freshrss -f | grep php,

packages: mariadb-server, acl, php8.3-gd, php8.3-zip, php8.3-dom, php8.3-mbstring, php8.3-gmp, php8.3-mysql, php8.3-sqlite3, php8.3-curl, php8.3-intl, php8.3-xml
* Check that the API is working: https://popcorn.bharathpalavalli.com/rss/api/greader.php
* Setup your client with: username: ynh user, password: the password you just setup, URL https://popcorn.bharathpalavalli.com/rss/api/greader.php
* Vérifiez que l'API fonctionne : https://popcorn.bharathpalavalli.com/rss/api/greader.php
* Configurez votre client avec : nom d'utilisateur : ynh user, mot de passe : le mot de passe que vous venez de configurer, URL https://popcorn.bharathpalavalli.com/rss/api/greader.php
  checksum__etc_php_8.2_fpm_pool.d_freshrss.conf: ec6ec4e61372f239fdaf9c80b1729fd0
  checksum__etc_php_8.3_fpm_pool.d_freshrss.conf: 623e932b42b59683cc46be8b7ace0287
  fpm_config_dir: /etc/php/8.2/fpm
  fpm_service: php8.2-fpm
  php_version: 8.4

And when I checked for the php packages with apt install --simulate php8.3-gd php8.3-zip php8.3-dom php8.3-mbstring php8.3-gmp php8.3-mysql php8.3-sqlite3 php8.3-curl php8.3-intl php8.3-xml

NOTE: This is only a simulation!
      apt needs root privileges for real execution.
      Keep also in mind that locking is deactivated,
      so don't depend on the relevance to the real current situation!
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'php8.3-xml' instead of 'php8.3-dom'
php8.3-xml is already the newest version (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d).
php8.3-xml set to manually installed.
php8.3-mysql is already the newest version (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d).
php8.3-mysql set to manually installed.
The following NEW packages will be installed:
  php8.3-curl php8.3-gd php8.3-gmp php8.3-intl php8.3-mbstring php8.3-sqlite3 php8.3-zip
0 upgraded, 7 newly installed, 0 to remove and 0 not upgraded.
Inst php8.3-curl (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Inst php8.3-gd (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Inst php8.3-gmp (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Inst php8.3-intl (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Inst php8.3-mbstring (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Inst php8.3-sqlite3 (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Inst php8.3-zip (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Conf php8.3-curl (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Conf php8.3-gd (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Conf php8.3-gmp (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Conf php8.3-intl (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Conf php8.3-mbstring (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Conf php8.3-sqlite3 (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])
Conf php8.3-zip (8.3.29-1+0~20251218.74+debian12~1.gbp4d5a0d bookworm [arm64])

I'm not sure if I should install any of these packages manually as this might interfere with other packages!

[bmp]

@ericgaspar @DeMiro5001 Would either of you be able to help me diagnose this and fix this?

[croulibri]

Hello 👋

I face the exact same issue as @bmp for almost a month.

When I go to the URL of FRESHRSS, I get
"502 Bad Gateway
If you see this page, your connection with the server is working but the internal service providing this path is not responding.
Administrator, make sure that the service is running, and check its logs if it is not. The Services page is in your webadmin, under Tools > Services.
Thank you for using YunoHost."

I see no service down in my server and Dokuwiki is also using php 8.4 without any problem.

And when I try to upgrade the application from version 1.27.1~ynh1 to 1.28.0~ynh1 I also get file or folder '/etc/php/8.4/fpm/pool.d/freshrss.conf' to be backed up does not exist

How Can I help to identify the origin of this problem?

[otm33GH]

Check the current php version for freshrrs: cat /etc/yunohost/apps/freshrss/settings.yml
If it is 8.4 you can try adding this to /etc/php/8.4/fpm/pool.d/
sudo nano /etc/php/8.4/fpm/pool.d/freshrss.conf
Content :

[freshrss]

user = freshrss
group = freshrss

chdir = /var/www/freshrss

listen = /var/run/php/php8.4-fpm-freshrss.sock
listen.owner = www-data
listen.group = www-data

pm = ondemand
pm.max_children = 16
pm.max_requests = 500
request_terminate_timeout = 1d

pm.process_idle_timeout = 10s
php_admin_value[upload_max_filesize] = 50M
php_admin_value[post_max_size] = 50M
php_admin_value[memory_limit] = 128M

and then restarting php8.4-fpm and retrying upgrade.

[bmp]

@otm33GH Thank you for the response!

Here is a partial output of sudo cat /etc/yunohost/apps/freshrss/settings.yml

fpm_config_dir: /etc/php/8.2/fpm
fpm_dedicated_service: '0'
fpm_footprint: low
fpm_service: php8.2-fpm
fpm_usage: low
id: freshrss
install_dir: /var/www/freshrss
install_time: 1717077955
language: en
path: /rss
php_version: '8.4'

It seems to use php 8.4, but seems to be configured to use php8.2-fpm! Is this some installation/upgrade issue?

I will try the config file you have suggested and report back too!

[otm33GH]

@bmp no need to do it : as you said your version is meant to use 8.2. What is weird is the freshrss.conf should be in the 8.2 pool.

[bmp]

@otm33GH but if you notice config,

fpm_config_dir: /etc/php/8.2/fpm <- This suggests 8.2, but 
...
fpm_service: php8.2-fpm
...
php_version: '8.4'

1. This suggests the fpm being used is php8.2-fpm and php version of 8.4, but when I try to use the app I get 502 bad gateway! And when I try to upgrade, I get File or folder '/etc/php/8.4/fpm/pool.d/freshrss.conf' to be backed up does not exist. I have pasted the details at 502 Bad gateway #222 (comment). I do not have a freshrss.conf within /etc/php/8.2/fpm/pool.d/.
2. So i added /etc/php/8.4/fpm/pool.d/freshrss.conf, restarted the service with sudo systemctl restart php8.4-fpm.service and immediately the app was available for use!
3. I was also able to successfully upgrade freshrss to 1.28.0 after adding the freshrss.conf!

@croulibri Please do try #222 (comment) and check first if FreshRSS first comes back up online.

[otm33GH]

@bmp Ok, well I’m glad the fix worked.
@croulibri I guess the backup script (run when upgrading) read php version from settings.yml. Since it read '8.4', it tried to backup /etc/php/8.4/fpm/pool.d/freshrss.confwhich doesn't exist. So backup and upgrade fail.
The fix works biut I also think that skipping the backup when upgrading could do the trick (yunohost app upgrade freshrss -b)
But I don't know what could have caused the inconsistency in settings.yml and removed freshrss.conf from 8.2 or 8.3 pool...

[croulibri]

On my side, the cat /etc/yunohost/apps/freshrss/settings.yml gives me :

_permissions:
  api:
    additional_urls:
    - /scripts/api.js
    allowed:
    - visitors
    auth_header: false
    label: api
    protected: true
    show_tile: false
    url: /api
  main:
    additional_urls: []
    allowed:
    - XXXXX
    - YYYYY
    auth_header: true
    label: FreshRSS
    protected: false
    show_tile: true
    url: /
admin: XXXXX
app: freshrss
apt_dependencies: acl, php7.3-gd, php7.3-zip, php7.3-dom, php7.3-mbstring, php7.3-gmp,
  php7.3-mysql, php7.3-sqlite3, php7.3-curl, php7.3-intl, php7.3-xml
checksum__etc_cron.d_freshrss: 2c864f635155417bea3b4ed422bfb80d
checksum__etc_fail2ban_filter.d_freshrss.conf: db1161fd35671671625f77061e31b9a4
checksum__etc_fail2ban_jail.d_freshrss.conf: af45f40ea1f3901fd54880f47c6b43c6
checksum__etc_nginx_conf.d_my.domain.com.d_freshrss.conf: be87f39419c67df2a235a07fcb5fe187
checksum__etc_php_7.4_fpm_pool.d_freshrss.conf: 2e822a0142bef67fcfaae6fed2cc8f57
checksum__etc_php_8.2_fpm_pool.d_freshrss.conf: ec6ec4e61372f239fdaf9c80b1729fd0
checksum__etc_php_8.3_fpm_pool.d_freshrss.conf: 623e932b42b59683cc46be8b7ace0287
current_revision: f869d3a065d740b5b380e03a51237b07952f1624
db_name: freshrss
db_pwd: QX4R3JYYYYYYYYYYYYYYYYamE
db_user: freshrss
domain: my.domain.com
fpm_config_dir: /etc/php/8.2/fpm
fpm_dedicated_service: '0'
fpm_footprint: low
fpm_service: php8.2-fpm
fpm_usage: low
id: freshrss
install_dir: /var/www/freshrss
install_time: 1587716019
language: fr
path: /rss
php_version: '8.3'
update_time: 1759481169

I don't have any ref to 8.4 in my conf, no ?
Then should I move everything to php 8.4 like @bmp did?
Or rather make an upgrade without backup?

[otm33GH]

@croulibri fpm_config_dir: /etc/php/8.2/fpm, fpm_service: php8.2-fpm and php_version: '8.3'
If I were you (but I'm not;) I would run the upgrade without safety-backup.

[croulibri]

I did the not so risky upgrade without backup (I have an opml backup of my subscriptions) and FreshRSS is working again !
Thank you very much 🤗

But cat /etc/yunohost/apps/freshrss/settings.yml still gives me a strange result, with some 8.2 and now 8.4:

fpm_config_dir: /etc/php/8.2/fpm
fpm_dedicated_service: '0'
fpm_footprint: low
fpm_service: php8.2-fpm
fpm_usage: low
id: freshrss
install_dir: /var/www/freshrss
install_time: 1587716019
language: fr
path: /rss
php_version: '8.4'
update_time: 1770390015

And apt dependency is still linked to php 7.3
apt_dependencies: acl, php7.3-gd, php7.3-zip, php7.3-dom, php7.3-mbstring, php7.3-gmp, php7.3-mysql, php7.3-sqlite3, php7.3-curl, php7.3-intl, php7.3-xml
🤔

[otm33GH]

@croulibri I guess some settings were appended during previous installations/upgrades and are no longer updated or mandatory.