Latest Server related questions

Score: 1
ehammer avatar
HP DL380 G8 Fan #6 Running at full speed when server is powered off
us flag

I have a HP DL380p G8 with all supported HP hardware installed, this includes 2 300gb SAS HDDs, 1 1.2TB SAS HDD, and a HP SFP+ add-in card for networking.

When the server is powered off and is still plugged in, fan #6 only runs at almost full speed. HP iLO does not report fan speeds (among other things) when the server is off.

Server is in power saver mode in both the bios and OS.

Anyone know why this  ...

Score: -1
Is it possible to "undo" a raid1 configuration
it flag
Ely

How can I reconfigure a raid1 so that it is not raid1 anymore and without loss of data? I do not want raid.

I find myself with a server with predefined images that have a software raid1 setup. My guess is that there are 2 SSD disks of 1 GB size but I am not sure. Anyway, I'd like to get rid of the raid.

I do not need a raid1 setup. I would like to change that into a normal disk layout without raid an ...

Score: 0
Thiago Dias avatar
Replace plain text response lines with dynamic query string on Nginx
in flag

I'm setting up the secure_link_module on Nginx to protect direct access to .m3u8 files, I was able to successfully configure it using an encrypted md5 and expires as query parameters, e.g:

example.com/video/sample.m3u8?md5=XXX&expires=YYY

that is working great for m3u8 files, but the problem is that inside .m3u8 files that are several .ts files, and in order for it to work, it also must be accessed ...

Score: 3
What is the source of syslog message "Condition check resulted in MD array scrubbing"
cn flag

On an Ubuntu 20.04.2 server with a software MD raid, exactly once a day when the system is doing its daily activities, the following message is output to the syslog:

systemd[1]: Condition check resulted in MD array scrubbing - continuation being skipped.

There are no issues with the MD raid. It is not in a degraded state and there have been no errors.

Although the message seems to imply that it  ...

Score: 0
Asmodean avatar
Firewalld Forwarding Functionality with Wireguard
us flag

I have asked before how to forward ports on a VPS running a wireguard service with ufw and iptables as the management.

I had to do this:

(56000 is a random port I chose) (10.66.66.2 is the internal ip of wireguard)

ufw route allow proto tcp to 10.66.66.2 port 56000

Then I would do this to actually forward the ports with iptables:

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 56000 -j DNAT --to-d ...
Score: 1
xdnroot avatar
IMAP and SMTP Still use Self Signed SSL even I have issued a Mail Server SSL in Cyberpanel
iq flag

I using cyberpanel on CentOS 7 and I setup SSL for my postfix and dovecot. But I still got "SSL Invalid" caused the self-signed SSL even I have configure SSL using Lets Encrypt.

This is /etc/postfix/main.cf

smtpd_tls_cert_file = /etc/letsencrypt/live/mail.domain.net/fullchain.pem
smtpd_tls_key_file = /etc/letsencrypt/live/mail.domain.net/privkey.pem

This is /etc/dovecot/dovecot.conf

ssl_cert = </ ...
Score: 0
VMWare ESXi + LetsEncrypt - SSL certificate renewal
cn flag

With VMWare ESXi (I'm running ESXi 6.7), I'm regularly go through an SSL issue. Chrome & Firefox do not allow self-signed certificated provided by internal VMWare system.

In my case, the only way to access to VMWare Sphere Web Client is to use Safari (on macOS) and allow manually certificate as a trusted certificate.

SSL error in chrome

The point is to declare signed certificate.
As VSphere Client is only for administr ...

Score: 0
TonyP. avatar
Pfsense GRE to Proxmox Openvirtualswitch gateway not going up
in flag

So, I run pfsense on Hetzner Cloud and proxmox on Hetzner Cloud. Both are VMs. The Hetzner network is very restricted. I found a solution: GRE tunnels.

The following setup works:

pve machine = 10.0.0.3, test machine = 10.0.0.4

pve machine /etc/network/interfaces:

auto vmbr0

iface vmbr0 inet manual

ovs_type OVSBridge

post-up ovs-vsctl add-port vmbr0 tep0 -- set interface tep0 type=internal

post ...
Score: 2
Why are docker permission errors not logged by selinux?
cn flag

If you try to bind mount a directory into a container under Red Hat you might have problems with selinux. The directory will be unreadable from inside the container. Unless you add a z/Z volume option.

But what I don't understand is why I can't see corresponding errors in /var/log/audit/audit.log. Indeed after:

sudo semodule --disable_dontaudit --build

they start getting logged:

type=AVC msg=audit(16 ...
Score: 0
Is a VMWARE hypervisor able to throttle or cap a VM's use of shared disk subsystem resources on a multi-tenant server
us flag
Tim

Are VMWARE hypervisors able to cap or throttle a VM's consumption of shared disk subsystem resources on a multi-tenant server? Or is there always the possibility that another VM on the server, a VM hosting some other tenant's database engine, will have a runaway query or a query against tables with poorly defined or fragmented indexes, or just heavy peak usage at certain times of day or on certai ...

Score: 8
adamsfamily avatar
Does one failed drive + one single bad sector destroy an entire RAID 5?
in flag

During planning my RAID setup on a Synology Disk Station I've done a lot of reading about various RAID types, being this a great reading: RAID levels and the importance of URE (Unrecoverable Read Error).

However, one thing remains unclear to me:

Let's have two scenarios:

  1. An array is a RAID 1 of 2 drives
  2. An array is a RAID 5 of 3 drives

The same assumptions for both scenarios:

  • Let's have 100.000 files o ...
Score: 0
setting up transparent proxy on gateway computer
bo flag

I am looking to setup a transparent proxy (client) on a computer which will act as a gateway/router for (client) computers connecting to this gateway computer. The client computers use a VPN client which is not going to be modified (nor will it have any proxy client). The transparent proxy client will connect to a proxy (server) through which all traffic (including the VPN traffic) should be routed fr ...

Score: 0
Grey Hill avatar
High iowait with RAID0. CPU 100%. Static data is not cached in RAM
us flag

I ask for your help. I myself can no longer see the way out.

I have a server
1x Xeon E-2236
32RAM
4 x 10TB disks (WDC WD101KRYZ-01) - collected in RAID-0.
The disks are fast. Each individually provides 250MB/s read/write. The RAID-0 array produces 900MB / s - which is quite enough to pump a 7 gigabit channel. Test conducted with hdparm -t /dev/md0

The server is designed to distribute large video files ...

Score: 0
AMendis avatar
nginx in docker redirects to local ip when accessing wp-admin
dk flag

Below is my nginx.conf

   events {
  
}
http {
  error_log /etc/nginx/error_log.log  debug;
  client_max_body_size 20m;
  proxy_cache_path /etc/nginx/cache keys_zone=one:500m max_size=1000m;
        server {
            listen 80;
            server_name example.org;
            client_max_body_size 1000M;
            location / {
                client_max_body_size 1000M;
                proxy_re ...
Score: 0
aytine avatar
IPTABLES - POSTROUTING requests are not forwarded back into the LAN
sk flag

I have some LXC hosted on a Proxmox server. They are all connected to the same network (10.0.0.0/24) and are supposed to go out to the Internet through the proxmox host (10.0.0.254 & WAN IP)

This is the proxmox firewall configuration :

iptables -S -t nat
-P PREROUTING ACCEPT
-P INPUT ACCEPT
-P OUTPUT ACCEPT
-P POSTROUTING ACCEPT
-N DOCKER
-A POSTROUTING -s 10.0.0.0/24 -o vmbr0 -j MASQUERADE

ipta ...

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