Issues with instance going down often

huzanforbes 2021-01-29 06:40:51 UTC #1

Keywords: LAMP/MAMP/WAMP - AWS - Technical issue - Connectivity (SSH/FTP)
bnsupport ID: f9beb14c-34a2-4e22-ac10-e970ab7e73c5
Description:
Hi,
I am facing issues with my instance. The website randomly goes down. When trying to connect SSH nothing shows on the SSH screen. Then the instance needs to be restarted and then it works properly.

huzanforbes 2021-01-29 06:41:25 UTC #2

@jota
The issue still persists. Kindly support.
https://community.bitnami.com/t/ctlscript-status-shows-as-daemon-not-running/86593/50?u=huzanforbes

davidg 2021-01-29 10:28:39 UTC #3

Hello @huzanforbes,

We have a tool that can check your instance for common issues and will suggest possible solutions. Could you execute the following commands to download and run it?

cd /tmp
curl -LJO http://downloads.bitnami.com/files/downloads/bndiagnostic-tool
chmod +x ./bndiagnostic-tool
sudo mv bndiagnostic-tool /opt/bitnami    
sudo /opt/bitnami/bndiagnostic-tool

Please note that this tool is under active development so could you please share the output with me so I can check it?

huzanforbes 2021-01-29 10:45:51 UTC #4

Hi @davidg

Please find below the output

davidg 2021-02-01 11:46:12 UTC #5

It seems that your machine is using swap:

-----------------------------------
Display amount of free and used memory in the system
-----------------------------------
Running: free -m
In: /opt/bitnami

Output:

              total        used        free      shared  buff/cache   available
Mem:            987         665          63           1         258         153
Swap:           634          21         613

You could try to increase your machine type if you face performance issues. This guide explains the process
https://docs.bitnami.com/aws/faq/administration/change-server-type/

Let me share with you our troubleshooting documentation:
https://docs.bitnami.com/aws/how-to/troubleshoot-wordpress-issues/
https://docs.bitnami.com/aws/faq/troubleshooting/troubleshoot-server-performance/

We also have a guide to optimize Wordpress:
https://docs.bitnami.com/google/apps/wordpress/troubleshooting/optimize-bitnami-wordpress/

I hope it helps

huzanforbes 2021-02-08 08:10:18 UTC #6

Thanks @davidg

My other instance also went down and the mysql stopped. I had to restart mysql.

Why could this be an issue? Can I have a cron to restart mysql or apache automatically whenever it goes down? If yes, could you please help me with the cron that needs to be set?

9877d2cb-0cfe-d29d-d5bd-db56dec3e641 of the instance where the mysql went down & I had to restart.

davidg 2021-02-08 10:16:03 UTC #7

Hello @huzanforbes,

The same for that machine. It is using swap memory:

-----------------------------------
Display amount of free and used memory in the system
-----------------------------------
Running: free -m
In: /opt/bitnami

Output:

              total        used        free      shared  buff/cache   available
Mem:            987         631          77          53         278         127
Swap:           634         363         271

To set a cronjob you should follow these steps:

sudo crontab -e

and use this one (e.g. every five minutes)

*/5 * * * * sudo /opt/bitnami/ctlscript.sh start

However, it is a patch, and my suggestion is to increase the machine to avoid those memory issues.

Regards

huzanforbes 2021-02-08 10:32:26 UTC #8

Thanks @davidg

Not sure why is this happening. I am using the below instance:
* 1 GB Memory
* 1 Core Processor
* 40 GB SSD Disk
* 2 TB Transfer

Not sure why it is moving to swap memory? Is there I can clear unwanted data/system files to make space?

davidg 2021-02-09 12:26:51 UTC #9

Hello,

You could try to increase your machine type if you face performance issues:
https://docs.bitnami.com/aws/faq/administration/change-server-type/

Could you take a look at this troubleshooting documentation?:
https://docs.bitnami.com/aws/how-to/troubleshoot-wordpress-issues/
https://docs.bitnami.com/aws/faq/troubleshooting/troubleshoot-server-performance/

We also have a guide to optimize Wordpress that may help to solve some issues:
https://docs.bitnami.com/google/apps/wordpress/troubleshooting/optimize-bitnami-wordpress/

Regards

huzanforbes 2021-02-10 18:58:05 UTC #10

Hi @davidg

Today also my instance went down. I was unable to even access through the SSH. I had to restart my instance. I am already running on the below config:
* 1 GB Memory
* 1 Core Processor
* 40 GB SSD Disk
* 2 TB Transfer

Why should I increase it more when my visitors also aren't that many?

davidg 2021-02-11 10:38:23 UTC #11

Hello @huzanforbes,

Have you followed the guides I shared with you? If so, please let us know if you find something weird or if you don't understand any of the step.

Regards

huzanforbes 2021-02-18 17:59:40 UTC #12

Hi @davidg

I've installed the W3 and below is the compatibility;

Can you help with places where it says not writable.

Plugin Version: 2.1.0
PHP Version: 7.4.7;
Web Server: Apache
FTP functions: Installed (required for Self-hosted (FTP) CDN support)
Multibyte String support: Installed (required for Rackspace Cloud Files support)
cURL extension: Installed (required for Amazon S3, Amazon CloudFront, Rackspace CloudFiles support)
zlib extension: Installed (required for gzip compression support)
brotli extension: Not installed (required for brotli compression support)
Opcode cache: Installed (OPCache)
Memcached extension: Not installed
Memcache extension: Not installed
Redis extension: Not installed
HTML Tidy extension: Installed (required for HTML Tidy minifier support)
Mime type detection: Installed (Fileinfo) (required for CDN support)
Hash function: Installed (hash) (required for NetDNA / MaxCDN CDN purge support)
Open basedir: Off
zlib output compression: Off
set_time_limit: Available
SSH2 extension: Not installed (required for Self-hosted (FTP) CDN SFTP support)
deflate_module: Installed (required for disk enhanced Page Cache and Browser Cache)
env_module: Installed (required for disk enhanced Page Cache and Browser Cache)
expires_module: Not installed (required for disk enhanced Page Cache and Browser Cache)
filter_module: Installed (required for disk enhanced Page Cache and Browser Cache)
ext_filter_module: Not installed (required for disk enhanced Page Cache and Browser Cache)
headers_module: Installed (required for disk enhanced Page Cache and Browser Cache)
mime_module: Installed (required for disk enhanced Page Cache and Browser Cache)
rewrite_module: Installed (required for disk enhanced Page Cache and Browser Cache)
setenvif_module: Installed (required for disk enhanced Page Cache and Browser Cache)
WordPress Resources
/opt/bitnami/apache/htdocs/domain/.htaccess: Not write-able
/opt/bitnami/apache/htdocs/domain/wp-content: Not write-able
/opt/bitnami/apache/htdocs/domain/wp-content/uploads/2021/02: Not write-able
Fancy permalinks: /%postname%/
WP_CACHE define: Defined (true)
URL rewrite: Enabled
Network mode: No

huzanforbes 2021-02-18 18:00:24 UTC #13

Kindly help in places with not writable or not installed.

davidg 2021-02-19 10:54:56 UTC #14

Hello @huzanforbes,

This guide explains what are the correct permissions for WP:
https://docs.bitnami.com/aws/apps/wordpress-pro/administration/understand-file-permissions/

I hope it helps

huzanforbes 2021-02-23 20:07:38 UTC #15

Hi @davidg
This is what happens. I’m unable to access my SSH and then I have to reboot my instance
https://drive.google.com/file/d/1hVxR6u9hYFFtuMPrgELFr-Et2_XPm0rQ/view?usp=drivesdk

Kindly help

jota 2021-02-24 11:49:22 UTC #16

Hi @huzanforbes,

Just requested access to the video

huzanforbes 2021-02-24 13:39:00 UTC #17

Hi @jota

I’ve given you access. Kindly support.

jota 2021-02-25 12:44:18 UTC #18

Hi @huzanforbes,

Instead of using your mobile phone and the SSH web client, could you please use a real SSH client in your computer to access that instance? I just checked that the SSH port is available and a service is running there.

https://docs.bitnami.com/aws/faq/get-started/connect-ssh/#obtain-ssh-credentials-from-amazon-lightsail
https://docs.bitnami.com/aws/faq/get-started/connect-ssh/#connect-with-an-ssh-client

I can see that you instance is running out of RAM memory so you are probably getting errors to access the instance due to that

-----------------------------------
Display amount of free and used memory in the system
-----------------------------------
Running: free -m
In: /opt/bitnami

Output:

              total        used        free      shared  buff/cache   available
Mem:            987         631          77          53         278         127
Swap:           634         363         271

Happy to help!

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huzanforbes 2021-03-02 19:23:37 UTC #19

Hi @jota

I sent the mobile video, since I wasn't in front of the PC. However, the issue is same on desktop too.

When such issues happen, I need to stop the instance and then restart.

However, how can I stop such issues?

Kindly support.

Huzan

jota 2021-03-03 10:04:13 UTC #20

As I mentioned, your instance seems to be running out of RAM memory, so I suggest you increase the instance type to fix the performance issues you are running into.

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