Emoncms.log location

[4est (Dan Padure)]

hello

I get The log file has no write permissions or does not exists. To fix, log-on on shell and do:
touch /var/log/emoncms/emoncms.log
chmod 666 /var/log/emoncms/emoncms.log

But in /var/www/emoncms/settings.php:
$log_filename = ‘/var/log/emoncms.log’;

The log file is indeed in /var/log

but why does the admin page insists the log file should be in /var/log/emoncms?

I grepped all the files but I could not find the hard reference to that

[borpin (Brian Orpin)]

If it is there, can you please post the Server Information from the admin page (Copy as Markdown button).

[4est (Dan Padure)]

Server Information

Server Information

Services

• emonhub :- Active Running
• mqtt_input :- Active Running
• feedwriter :- Active Running - sleep 60s 133 feed points pending write
• service-runner :- Active Running
• emonPiLCD :- Active Exited
• redis-server :- Active Running
• mosquitto :- Active Running

Emoncms

• Version :- low-write 10.1.6
• Modules :- Administration | App v2.0.6 | Backup v1.1.5 | EmonHub Config v2.0.4 | Dashboard v2.0.4 | Device v2.0.1 | EventProcesses | Feed | Graph v2.0.4 | Input | Postprocess v1.0.0 | CoreProcess | Schedule | Network Setup v1.0.0 | sync | Time | User | Visualisation | WiFi v2.0.1
• Git :-
  • URL :- GitHub - emoncms/emoncms: Web-app for processing, logging and visualising energy, temperature and other environmental data
  • Branch :- * stable
  • Describe :- 10.1.6-3-g14218680

Server

• OS :- Linux 4.19.66-v7+
• Host :- emonpi | emonpi | (192.168.12.43)
• Date :- 2019-10-04 11:28:00 EEST
• Uptime :- 11:28:00 up 7 days, 18:15, 0 users, load average: 0.16, 0.12, 0.09

Memory

• RAM :- Used: 17.87%
  • Total :- 975.62 MB
  • Used :- 174.37 MB
  • Free :- 801.25 MB
• Swap :- Used: 0.00%
  • Total :- 100 MB
  • Used :- 0 B
  • Free :- 100 MB

Disk

• / :- Used: 44.63%
  • Total :- 3.81 GB
  • Used :- 1.7 GB
  • Free :- 1.93 GB
• /boot :- Used: 52.50%
  • Total :- 42.52 MB
  • Used :- 22.32 MB
  • Free :- 20.19 MB
• /home/pi/data :- Used: 6.43%
  • Total :- 3.21 GB
  • Used :- 211.06 MB
  • Free :- 2.84 GB

HTTP

• Server :- Apache/2.4.25 (Raspbian) HTTP/1.1 CGI/1.1 8043

MySQL

• Version :- 5.5.5-10.1.23-MariaDB-9+deb9u1
• Host :- localhost:6379 (127.0.0.1)
• Date :- 2019-10-04 08:27:59 (UTC 00:00‌​)
• Stats :- Uptime: 670502 Threads: 2 Questions: 148485 Slow queries: 0 Opens: 43 Flush tables: 1 Open tables: 37 Queries per second avg: 0.221

Redis

• Version :- 3.2.6
• Host :- localhost:6379
• Size :- 77 keys (741.69K)
• Uptime :- 7 days

MQTT Server

• Version :- Mosquitto 1.4.10
• Host :- localhost:1883 (127.0.0.1)

PHP

• Version :- 7.0.33-0+deb9u3 (Zend Version 3.0.0)
• Modules :- apache2handler | calendar v7.0.33-0+deb9u3 | Core v7.0.33-0+deb9u3 | ctype v7.0.33-0+deb9u3 | curl v7.0.33-0+deb9u3 | date v7.0.33-0+deb9u3 | dom v20031129 | exif v7.0.33-0+deb9u3 | fileinfo v1.0.5 | filter v7.0.33-0+deb9u3 | ftp v7.0.33-0+deb9u3 | gd v7.0.33-0+deb9u3 | gettext v7.0.33-0+deb9u3 | hash v1.0 | iconv v7.0.33-0+deb9u3 | igbinary v2.0.1 | json v1.4.0 | libxml v7.0.33-0+deb9u3 | mbstring v7.0.33-0+deb9u3 | mcrypt v7.0.33-0+deb9u3 | mosquitto v0.4.0 | mysqli v7.0.33-0+deb9u3 | mysqlnd vmysqlnd 5.0.12-dev - 20150407 - $Id: b5c5906d452ec590732a93b051f3827e02749b83 $ | openssl v7.0.33-0+deb9u3 | pcre v7.0.33-0+deb9u3 | PDO v7.0.33-0+deb9u3 | pdo_mysql v7.0.33-0+deb9u3 | Phar v2.0.2 | posix v7.0.33-0+deb9u3 | readline v7.0.33-0+deb9u3 | redis v4.1.1 | Reflection v7.0.33-0+deb9u3 | session v7.0.33-0+deb9u3 | shmop v7.0.33-0+deb9u3 | SimpleXML v7.0.33-0+deb9u3 | sockets v7.0.33-0+deb9u3 | SPL v7.0.33-0+deb9u3 | standard v7.0.33-0+deb9u3 | sysvmsg v7.0.33-0+deb9u3 | sysvsem v7.0.33-0+deb9u3 | sysvshm v7.0.33-0+deb9u3 | tokenizer v7.0.33-0+deb9u3 | wddx v7.0.33-0+deb9u3 | xml v7.0.33-0+deb9u3 | xmlreader v7.0.33-0+deb9u3 | xmlwriter v7.0.33-0+deb9u3 | xsl v7.0.33-0+deb9u3 | Zend OPcache v7.0.33-0+deb9u3 | zlib v7.0.33-0+deb9u3

Pi

• Model :- Raspberry Pi 3 Model B+ Rev 1.3 - 1GB (Sony UK)

• Serial num. :- 189B6A75

• Temperature :- 45.62°C - 46.2°C

• emonpiRelease :- emonSD-30Oct18

• File-system :- read-write

Client Information

Client Information

HTTP

• Browser :- Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36
• Language :- en-US,en;q=0.9,ro;q=0.8

Window

• Size :- 1841 x 1009

Screen

• Resolution :- 1920 x 1080

[borpin (Brian Orpin)]

My suspicion is that this is because the variable $log_filename became $log_location

Is there a folder /var/log/emoncms/? It should be created by one of the services at startup.

I think if you change the line

$log_filename = '/var/log/emoncms.log';

to

$log_location = "/var/log/emoncms";

it should be happy.

Merge latest master to stable by TrystanLea · Pull Request #1308 · emoncms/emoncms · GitHub refers

These sort of issues should be overcome by the hierarchical settings that have been introduced.

If this doesn’t fix it, try

sudo systemctl restart emoncms_mqtt.service

and post output from

sudo systemctl status emoncms_mqtt.service

[4est (Dan Padure)]

no, your line did not work

but this one inspired by yours worked:

$log_location = ‘/var/log’;
$log_filename = ‘emoncms.log’;

[4est (Dan Padure)]

the problem is now it does not find emonpiupdate.log

/var/log/emonpiupdate.log does not exist

it’s actually in /home/pi/data

That’s because in modules/admin/admin_controller.php:
$emoncms_logfile = $settings[‘log’][‘location’]."/emoncms.log";
$update_logfile = $settings[‘log’][‘location’]."/emonpiupdate.log";
$backup_logfile = $settings[‘log’][‘location’]."/emonpibackup.log";

from what I see, you can’t have logs in different locations
I could hard edit $emoncms_logfile in the php file, but that would be an ugly fix

[4est (Dan Padure)]

I don’t have emoncms_mqtt.service

root@emonpi:/var/www/emoncms# systemctl | grep mqtt
mqtt_input.service loaded active running Emoncms MQTT Input Script
root@emonpi:/var/www/emoncms# systemctl | grep emoncms
root@emonpi:/var/www/emoncms#

LATER EDIT:
I did a full update and now I do have that script

● emoncms_mqtt.service - Emoncms emoncms_mqtt script
Loaded: loaded (/var/www/emoncms/scripts/services/emoncms_mqtt/emoncms_mqtt.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2019-10-04 20:09:42 EEST; 4s ago
Docs: emoncms/MQTT.md at master · emoncms/emoncms · GitHub
Process: 16231 ExecStartPre=/bin/chmod 666 ${LOG_PATH}/emoncms.log (code=exited, status=0/SUCCESS)
Process: 16227 ExecStartPre=/bin/touch ${LOG_PATH}/emoncms.log (code=exited, status=0/SUCCESS)
Process: 16224 ExecStartPre=/bin/chown ${USER} ${LOG_PATH} (code=exited, status=0/SUCCESS)
Process: 16218 ExecStartPre=/bin/mkdir -p ${LOG_PATH} (code=exited, status=0/SUCCESS)
Main PID: 16234 (php)
Tasks: 1 (limit: 4915)
CGroup: /system.slice/emoncms_mqtt.service
└─16234 /usr/bin/php /var/www/emoncms/scripts/services/emoncms_mqtt/emoncms_mqtt.php

[4est (Dan Padure)]

I changed the log location to /home/pi/data, where the other log files are and it seems to work as all files are in the same place now

$log_location = '/home/pi/data';
$log_filename = 'emoncms.log';

[borpin (Brian Orpin)]

@4est

no, your line did not work

Because

@4est

I don’t have emoncms_mqtt.service

@4est

I did a full update and now I do have that script

Now you have the emoncms_mqtt.service the correct folder, /var/log/emoncms should be created and the permissions set correctly (on startup).

You would now be better with

$log_location = "/var/log/emoncms";

As:

1. That is where emoncms expects to be.
2. If the logs are on /home/pi/data, it is increasing the wear on the SD card so making this more prone to early failure. /var/log is mounted on tempfs for this reason.
3. Additionally, the logfiles will grow uncontrolled as logrotate will not find them there.

YMMV

Cheers

[4est (Dan Padure)]

indeed now everything works as expected

thanks

[borpin (Brian Orpin)]

@4est

indeed now everything works as expected

Did you change the log_location to /var/log/emoncms?