Hello,

I am currently using the FOG REST API to develop a multicast solution for end users. Immediate multicast tasks are working as expected.

However, I’m encountering an issue with scheduled tasks. When I create a scheduled multicast task, the task object is successfully registered. But once the scheduled time passes, the task does not execute and remains listed under Tasks → Scheduled Tasks.

To rule out API-related issues, I also attempted to schedule a multicast task directly through the FOG Web UI, but experienced the same behavior.

Additional details:

Version: v1.6.0-beta.2277
SCHEDULERGLOBALENABLED is enabled
FogScheduler service is active

Could you please advise what might be causing scheduled tasks not to execute, or suggest any additional checks or logs I should review?

Thank you in advance for your help.

Hi, I installed a fresh Fog Server v1.6-beta-2303 on Ubuntu Server 24.04.4 LTS (Installation Type: Normal Server).

I used FOG Web to create a new group. The group was created successfully. However, when I selected the group to add hosts, the UI page was broken and show html format. This error is shown at the end:

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘)’ at line 8

When I checked FOG status, all services are enabled. But there are warnings related specifically:

Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Undefined array key “imageID” in /var/www/fog/lib/router/route.class.php on line 2512
Undefined array key “sID” in /var/www/fog/lib/router/route.class.php on line 2512

Log of services that had warnings:

fog_admin@fog2026:~$ systemctl status FOG*

Apr 01 15:11:38 fog2026 systemd[1]: FOGSnapinReplicator.service: Scheduled restart job, restart counter is at 3.
Apr 01 15:11:38 fog2026 systemd[1]: Started FOGSnapinReplicator.service - FOGSnapinReplicator.
Apr 01 15:11:38 fog2026 env[26974]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512

Apr 01 14:41:34 fog2026 systemd[1]: Started FOGImageSize.service - FOGImageSize.
Apr 01 14:41:34 fog2026 env[25343]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 14:41:34 fog2026 env[25343]: PHP Warning: Undefined array key “imageID” in /var/www/fog/lib/router/route.class.php on line 25>

Apr 01 15:11:38 fog2026 systemd[1]: FOGImageReplicator.service: Scheduled restart job, restart counter is at 3.
Apr 01 15:11:38 fog2026 systemd[1]: Started FOGImageReplicator.service - FOGImageReplicator.
Apr 01 15:11:38 fog2026 env[26973]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512

Apr 01 14:41:34 fog2026 systemd[1]: Started FOGSnapinHash.service - FOGSnapinHash.
Apr 01 14:41:34 fog2026 env[25332]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 14:41:34 fog2026 env[25332]: PHP Warning: Undefined array key “sID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:11:35 fog2026 env[25332]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:11:35 fog2026 env[25332]: PHP Warning: Undefined array key “sID” in /var/www/fog/lib/router/route.class.php on line 2512

● FOGMulticastManager.service - FOGMulticastManager
Loaded: loaded (/usr/lib/systemd/system/FOGMulticastManager.service; enabled; preset: enabled)
Active: active (running) since Wed 2026-04-01 14:41:34 EEST; 35min ago

Apr 01 15:16:24 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:24 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:34 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:34 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:44 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:44 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:54 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:54 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:17:04 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:17:04 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512

@Tom-Elliott Hi Tom,

log for apache error:

[Wed Apr 01 16:05:36.847438 2026] [proxy_fcgi:error] [pid 1232] [client 172.28.1.84:48932] AH01071: Got error 'PHP message: PHP Warning:  session_start(): open(/var/lib/php/sessions/sess_f9273cevne2k8cci10csjt7b81, O_RDWR) failed: Permission denied (13) in /var/www/fog/commons/init.php on line 84; PHP message: PHP Warning:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/fog/commons/init.php on line 84'
[Wed Apr 01 16:05:36.860169 2026] [proxy_fcgi:error] [pid 1233] [client 172.28.1.84:48946] AH01071: Got error 'PHP message: PHP Warning:  session_start(): open(/var/lib/php/sessions/sess_f9273cevne2k8cci10csjt7b81, O_RDWR) failed: Permission denied (13) in /var/www/fog/commons/init.php on line 84; PHP message: PHP Warning:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/fog/commons/init.php on line 84'
[Wed Apr 01 16:05:36.877158 2026] [proxy_fcgi:error] [pid 1234] [client 172.28.1.84:48952] AH01071: Got error 'PHP message: PHP Warning:  session_start(): open(/var/lib/php/sessions/sess_f9273cevne2k8cci10csjt7b81, O_RDWR) failed: Permission denied (13) in /var/www/fog/commons/init.php on line 84; PHP message: PHP Warning:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/fog/commons/init.php on line 84'
[Wed Apr 01 16:05:36.889945 2026] [proxy_fcgi:error] [pid 1231] [client 172.28.1.84:48968] AH01071: Got error 'PHP message: PHP Warning:  session_start(): open(/var/lib/php/sessions/sess_f9273cevne2k8cci10csjt7b81, O_RDWR) failed: Permission denied (13) in /var/www/fog/commons/init.php on line 84; PHP message: PHP Warning:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/fog/commons/init.php on line 84'

the php-fpm error:

[01-Apr-2026 12:57:13] NOTICE: Terminating ...
[01-Apr-2026 12:57:13] NOTICE: exiting, bye-bye!
[01-Apr-2026 15:57:34] NOTICE: fpm is running, pid 758
[01-Apr-2026 15:57:34] NOTICE: ready to handle connections
[01-Apr-2026 15:57:34] NOTICE: systemd monitor interval set to 10000ms

Hi, I installed a fresh Fog Server v1.6-beta-2303 on Ubuntu Server 24.04.4 LTS (Installation Type: Normal Server).

I used FOG Web to create a new group. The group was created successfully. However, when I selected the group to add hosts, the UI page was broken and show html format. This error is shown at the end:

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘)’ at line 8

When I checked FOG status, all services are enabled. But there are warnings related specifically:

Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Undefined array key “imageID” in /var/www/fog/lib/router/route.class.php on line 2512
Undefined array key “sID” in /var/www/fog/lib/router/route.class.php on line 2512

Log of services that had warnings:

fog_admin@fog2026:~$ systemctl status FOG*

Apr 01 15:11:38 fog2026 systemd[1]: FOGSnapinReplicator.service: Scheduled restart job, restart counter is at 3.
Apr 01 15:11:38 fog2026 systemd[1]: Started FOGSnapinReplicator.service - FOGSnapinReplicator.
Apr 01 15:11:38 fog2026 env[26974]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512

Apr 01 14:41:34 fog2026 systemd[1]: Started FOGImageSize.service - FOGImageSize.
Apr 01 14:41:34 fog2026 env[25343]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 14:41:34 fog2026 env[25343]: PHP Warning: Undefined array key “imageID” in /var/www/fog/lib/router/route.class.php on line 25>

Apr 01 15:11:38 fog2026 systemd[1]: FOGImageReplicator.service: Scheduled restart job, restart counter is at 3.
Apr 01 15:11:38 fog2026 systemd[1]: Started FOGImageReplicator.service - FOGImageReplicator.
Apr 01 15:11:38 fog2026 env[26973]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512

Apr 01 14:41:34 fog2026 systemd[1]: Started FOGSnapinHash.service - FOGSnapinHash.
Apr 01 14:41:34 fog2026 env[25332]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 14:41:34 fog2026 env[25332]: PHP Warning: Undefined array key “sID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:11:35 fog2026 env[25332]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:11:35 fog2026 env[25332]: PHP Warning: Undefined array key “sID” in /var/www/fog/lib/router/route.class.php on line 2512

● FOGMulticastManager.service - FOGMulticastManager
Loaded: loaded (/usr/lib/systemd/system/FOGMulticastManager.service; enabled; preset: enabled)
Active: active (running) since Wed 2026-04-01 14:41:34 EEST; 35min ago

Apr 01 15:16:24 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:24 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:34 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:34 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:44 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:44 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:54 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:16:54 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:17:04 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512
Apr 01 15:17:04 fog2026 env[25262]: PHP Warning: Undefined array key “ngmID” in /var/www/fog/lib/router/route.class.php on line 2512

@Tom-Elliott Hi Tom, I updated to 1.6-beta-2297.

I still face the same issue of scheduled task did not work. FOGScheduler is active. I noticed there are warnings related to Undefined array key in fog/fogcron.class.php in the attached log.

sudo systemctl status FOGScheduler.service

● FOGScheduler.service - FOGScheduler
Loaded: loaded (/lib/systemd/system/FOGScheduler.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2026-03-31 10:13:34 EEST; 48min ago
Main PID: 952993 (php)
Tasks: 2 (limit: 28695)
Memory: 10.8M
CPU: 48min 47.812s
CGroup: /system.slice/FOGScheduler.service
├─952993 php /opt/fog/service/FOGTaskScheduler/FOGTaskScheduler
└─953049 php /opt/fog/service/FOGTaskScheduler/FOGTaskScheduler

Mar 26 14:13:13 fog env[3374690]: PHP Warning: Undefined array key 2 in /var/www/html/fog/lib/fog/fogcron.class.php on line 68
Mar 26 14:13:13 fog env[3374690]: PHP Warning: Undefined array key 3 in /var/www/html/fog/lib/fog/fogcron.class.php on line 69
Mar 26 14:13:13 fog env[3374690]: PHP Warning: Undefined array key 4 in /var/www/html/fog/lib/fog/fogcron.class.php on line 70

@Tom-Elliott Hi Tom, I checked the server Time Zone. It matched with the FOG_TZ_INFO which is EET.

Server Time: Fri Mar 27 09:04:39 EET 2026
FOG_TZ_INFO: Europe/Helsinki [EET: +2:00]

I was unable to schedule the task in the previous version, so I updated to v1.6-beta.2277 two weeks ago. Could you please let me know which version you were referring to in your comment as the working one?

I could not schedule task in previous version so I updated it to v1.6-beta.2277 2 weeks ago. Please let me know the working version that you suggested in your comment.

I noticed a difference between the C and S schedule task types. For C tasks, the parameters stMinute, stHour, stDOM, stMonth, and stDOW are populated, whereas for S tasks they are not. Is this expected behavior?

Delayed:
*************************** 1. row ***************************
stID: 27
stName: Multi-Cast Task
stDesc:
stType: S
stTaskTypeID: 8
stMinute:
stHour:
stDOM:
stMonth:
stDOW:
stIsGroup: 1
stGroupHostID: 41
stImageID: 0
stShutDown:
stOther1:
stOther2: -1
stOther3: xy.xy
stOther4: 1
stOther5:
stDateTime: 1773389439
stActive: 1

Cron:
*************************** 2. row ***************************
stID: 28
stName: Multi-Cast Task
stDesc:
stType: C
stTaskTypeID: 8
stMinute: 0
stHour: *
stDOM: *
stMonth: *
stDOW: *
stIsGroup: 1
stGroupHostID: 41
stImageID: 0
stShutDown:
stOther1:
stOther2: -1
stOther3: xy.xy
stOther4: 1
stOther5:
stDateTime: 0
stActive: 1

@Tom-Elliott Hi Tom, thanks for your reply.

I restarted the FogScheduler. Half an hour has past since I created 1 tasks via API and 1 through Fog Web. They stayed in the Scheduled Tasks and did not get executed.

Added some logs

Fog Database:
name@fog:/opt/fog/log$ sudo mariadb -e "
USE fog;
SELECT *
FROM scheduledTasks\G
"

*************************** 1. row ***************************
stID: 27
stName: Multi-Cast Task
stDesc:
stType: S
stTaskTypeID: 8
stMinute:
stHour:
stDOM:
stMonth:
stDOW:
stIsGroup: 1
stGroupHostID: 41
stImageID: 0
stShutDown:
stOther1:
stOther2: -1
stOther3: xy.xy
stOther4: 1
stOther5:
stDateTime: 1773389439
stActive: 1

Crontask:

*************************** 2. row ***************************
stID: 28
stName: Multi-Cast Task
stDesc:
stType: C
stTaskTypeID: 8
stMinute: 0
stHour: *
stDOM: *
stMonth: *
stDOW: *
stIsGroup: 1
stGroupHostID: 41
stImageID: 0
stShutDown:
stOther1:
stOther2: -1
stOther3: xy.xy
stOther4: 1
stOther5:
stDateTime: 0
stActive: 1

Fog Settings
±-----------------------±-----------------+
| settingKey | settingValue |
±-----------------------±-----------------+
| SCHEDULERDEVICEOUTPUT | /dev/tty4 |
| SCHEDULERGLOBALENABLED | 1 |
| SCHEDULERLOGFILENAME | fogscheduler.log |
| SCHEDULERSLEEPTIME | 60 |
±-----------------------±-----------------+

[03-06-26 12:26:18 pm] Interface Ready with IP Address: 127.0.0.1
[03-06-26 12:26:18 pm] Interface Ready with IP Address: 127.0.1.1
[03-06-26 12:26:18 pm] Interface Ready with IP Address: 172.28.1.80
[03-06-26 12:26:18 pm] Interface Ready with IP Address: domain.name.xxx
[03-06-26 12:26:18 pm] * Starting TaskScheduler Service
[03-06-26 12:26:18 pm] * Checking for new items every 60 seconds
[03-06-26 12:26:18 pm] * Starting service loop
[03-06-26 12:26:18 pm] * 3 tasks found.
[03-06-26 12:26:18 pm] * Checking for expired checked-in tasks…
[03-06-26 12:26:18 pm] * Scheduled Task run time: Fri, 01 Jan 2027 00:00:00 +0200
[03-06-26 12:26:18 pm] * This is a cron style task that should not run now.

The time zone:
name@fog:/opt/fog/log$ date
Fri Mar 13 10:38:46 EET 2026
name@fog:/opt/fog/log$ sudo mariadb -e “SELECT NOW();”
±--------------------+
| NOW() |
±--------------------+
| 2026-03-13 10:39:22 |
±--------------------+

Hello,

I am currently using the FOG REST API to develop a multicast solution for end users. Immediate multicast tasks are working as expected.

However, I’m encountering an issue with scheduled tasks. When I create a scheduled multicast task, the task object is successfully registered. But once the scheduled time passes, the task does not execute and remains listed under Tasks → Scheduled Tasks.

To rule out API-related issues, I also attempted to schedule a multicast task directly through the FOG Web UI, but experienced the same behavior.

Additional details:

Version: v1.6.0-beta.2277
SCHEDULERGLOBALENABLED is enabled
FogScheduler service is active

Could you please advise what might be causing scheduled tasks not to execute, or suggest any additional checks or logs I should review?

Thank you in advance for your help.