Latest Server related questions

Score: 0
ackbar03 avatar
100% CPU usage from iowait caused by Nginx, not solved by turning sendfile on and directio off
us flag

I run a webservice that performs some basic image processing operations.

The webserver first accepts image uploads from users and temporarily stores them. A backend server then downloads the image through a HTTP get request and performs the actual processing. It is then sent back to the webserver. The user then downloads the images. The processed image is typically significantly larger than the o ...

Score: 1
Pranav avatar
While creating App Engine firewall rules, How to get get Max existing firewall priority from the rule list
jp flag

In creating an app Engine firewall rule, we need the priority number.

While adding a new rule to the firewall our code checks a database for the latest priority number on the console and calculates the next number by incrementing the same. In case this fails, or the value is edited on console, firewall rule creation might fail. Hence, an API call should be made as a backup measure that gets the m ...

Score: 0
Zabbix - users cannot see graphs
bd flag

i configured new dashboard with wanted hosts and graphs and everything is ok with that, but other users cannot see graps,just timelines. Can somebody give me advice related to this issue.

Thanks in advance.

Score: 0
CADENTIC avatar
is it for mysql 8.0.28 or is it a multisite wordpress bug in 5.9
ng flag
    cusomizedprefixwp_1_posts: Table 'cusomizedDB.cusomizedprefixwp_1_posts' doesn't exist
cusomizedprefixwp_1_comments: Table 'cusomizedDB.cusomizedprefixwp_1_comments' doesn't exist
cusomizedprefixwp_1_links: Table 'cusomizedDB.cusomizedprefixwp_1_links' doesn't exist
cusomizedprefixwp_1_options: Table 'cusomizedDB.cusomizedprefixwp_1_options' doesn't exist
cusomizedprefixwp_1_postmeta: Table 'cusomized ...
Score: 0
YuvGM avatar
Kerberos credentials not renewed on ipa ubuntu client
kz flag

When I use ssh to login to my freeipa client, I get Kerberos credentials (klist). However, after they expire, I no longer get the credentials (klist empty). This results with no home directory as the user does not have permissions for the nfs. I can use kinit to obtain new credentials. Restarting sssd and logging in again with ssh, also obtains a new ticket. Using sudo obtains tickets as well.

I do  ...

Score: 0
jyte avatar
Nginx mirroring without "main" proxy_pass
jp flag

I have a case where I would like nginx to proxy_pass queries to a backend and mirror it to one or more site.

That is quite straight forward with a config like

server {
        server_name mydomain.tld;
        listen 80;

        location /my/endpoint {
                mirror /mirror;
                proxy_pass http://mainbackend;
        }

        location /mirror {
                internal;
        ...
Score: 0
Tobias Leupold avatar
It it possible to share a Dovecot passwd file to use it with Postfix's virtual_mailbox_maps?
ve flag

I run a small Postfix and Dovecot server with only a few mailboxes. All are virtual via Dovecot, there's no local delivery. Caused by the small number of users, I simply use plain text files for the password db and have configured Dovecot like this:

passdb {
    driver = passwd-file
    args = username_format=%u /etc/dovecot/users
}

The users file has the syntax

address@domain:{HASH_ALGO}somehash ...
Score: 0
Madeline avatar
(nginx) is it possible to preserve http protocol?
cn flag

I have a backend server that receives HTTP/1.1, HTTP/2.0 plaintext, grpc plaintext over HTTP/2.0 (no tls).

I want to use nginx to receive HTTP request from user (HTTP/1.1, HTTP/2, etc), and pass to backend, preserving HTTP version without using passthrough.

so, desired state is below.

1. client <-(HTTP/1.1 plaintext)-> nginx <-(HTTP/1.1 plaintext)-> backend
2. client <-(HTTP/2 plaintext)-& ...

Score: 0
Gill-Bates avatar
Snort: How to block suspicious Traffic?
ps flag

Snort comes by default (Debian) with a bunch of Rules. The are all configured as „Alert“. When I want to block suspicious traffic (IPS-Mode), do I need to change all Rules from Alert to Block or is there another mechanism?

What is best practice?

Score: 0
fromtheloam avatar
Is a server firewall (i.e. UFW) necessary if a firewall is setup through the server provider?
cn flag

For example, if I have an Ubuntu server through DigitalOcean, if a firewall is setup through DigitalOCean's UI to control inbound and outbound traffic for said server, is it necessary to also enable and configure UFW? Do they functionally do the same thing? Is one better than the other?

Score: 0
JRA avatar
How can I deny a specific port on a certain interface/public IP using ufw?
in flag
JRA

I tried using the command below but I can still connect to it via browser.

sudo ufw deny from any to {public IP} port 8080

I am running a wikijs (running on port 8080) on a server with cloudflare tunnel access. I want to block browser access when they try to browse for http://public-ip:8080

Score: -1
pl-jay avatar
How to enable TLS to windows server?
bg flag

The servers running Windows server datacenter 2016 on Azure. As per the documentation says, by default TLS 1.2 is enabled but, i checked the registry and TLS does not exist on the registry.

So how can i enable TLS on this server

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