500 server error wordpress sites

Hello my websites stop working and i am getting 500 error when i try to open cyberpanel admin ip.

When i click ssh button i am getting error. After the i am clicking troubleshooting button and i am getting this

vm status ok but other 2 control all time checking there is no result

After that i open vm instance monitoring field and i see this errors

also i got this error

and i go to vm instance disk , and increase my disk capacity. I dont know its worked or not worked

If anyone help me about that i will be really appreciate. Because all my websites using cyberpanel and now all gone.

thank you

Hello @izzet

There are several reasons this can happen:

  1. Run du -s -h /* to see disk space maybe you have no space left because of incremental backups, website files, cache files froma multitude of wordpress/php websites, logs, a full /tmp folder

  2. Lack of essential resources such as server RAM or CPU. Does your server meet minum requirements or are there websites hogging resources, or trchnologies such as WAF, Firewalls, Scanners etc.

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Hello Joseph I hope you are well. Thank you for your answer . I am not expert on google cloud unfortunately

my ssh keys

todays is expired i think. may be this is the reason of this error ? If its how can fix it ?

thank you.

and how can i run du -s -h /* code i can not access to my vm instance with ssh button

This shows clearly there is no space left on the device. Does your installation meet minimum requirements ? Check if disk is full from your server dashboard 01 - Installing CyberPanel

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Actually my disk space was 30 GB after this error i increased to 60 GB but after that i did nothing. I don’t know if I need to restart the server

and also my 4 website already running with cyberpanel. Some days later i got this error. Its not fresh installing cyber panel

Wordpress websites ?

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Yes all of them.I use google deployment tool with cyberpanel


du -s -h /*

Possible issues is cache folders are full or you are running wordpress backups on same device causing disk to be full

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If you are running LSCACHE

Disable the crawler feature - Crawler | Screen-by-Screen | LSCache for WordPress | LiteSpeed Documentation and purge all cache

I am really sorry i dont know how can i run this code except this section. I dont use any other program to connect vm instance.

i am using wordpress fastest cache plugin . LScache is not active on my wordpress websites.

Name of the plugin?

Seems you do not have access to your server. Contact GCP support for help

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yes because of ssh keys i think. How can i update my ssh keys for connect to my server.

Kindly do this

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by the way i post google clouds forums no answer but i can be able to connect to

System Status:
Load : 0.00, 0.01, 0.00
CPU : 5.69231%
RAM : 583/3668MB (15.89%)
Disk : 29/29GB (100%)
you told me you were right disk is full. how can i clean caches ? or unused files ?

its give me this

0       /bin
161M    /boot
1.7G    /cyberpanel.swap
512K    /dev
7.5M    /etc
18G     /home
0       /lib
0       /lib32
0       /lib64
0       /libx32
16K     /lost+found
4.0K    /media
4.0K    /mnt
4.0K    /opt
du: cannot access '/proc/1890955/task/1890955/fd/4': No such file or directory
du: cannot access '/proc/1890955/task/1890955/fdinfo/4': No such file or directory
du: cannot access '/proc/1890955/fd/3': No such file or directory
du: cannot access '/proc/1890955/fdinfo/3': No such file or directory
0       /proc
54M     /root
38M     /run
0       /sbin
4.4G    /snap
4.0K    /srv
0       /sys
62M     /tmp
4.9G    /usr
4.5G    /var
4.0K    /webadmin.csr
  1. Check wordpress backups - either delete them or switch to remote backups like dropbox, or s3 compliant backups
  2. Check cache folders of your wordpress plugins How to Clear Your Cache in WordPress (Step by Step)
  3. Maybe your website files are 18GB. Check site health of your website

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can i delete backups on terminal ? is that possible ?

Yes depends where they are. Did you setup a local path for your cyberpanel websites backups ? If you did just change directory to that and delete everything in that folder

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