Latest Server related questions

Score: 0
Danielo515 avatar
Proxmox container moved to the wrong machine and now it is trapped there
in flag

I have a HA proxmox cluster with three nodes.

I have replication between two nodes. Each of those two nodes have a ZFS pool that is used for replication. I have replication rules setup between those two servers with ZFS for HA.

I have an older third node (called virtual) that does not have any ZFS disk, so I don't use it as a replication target.

Today one of the nodes with ZFS died, and one of the cont ...

Score: 1
Scorpioooooon21 avatar
Unable to login to docker via Ubuntu 18.04.5 LTS
mx flag

I am having an issue on login to docker from my Ubuntu 18.04.5 LTS

This is the command I run to login docker

sudo docker login -u myname -p mypass

This is the error I've got

Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

I did searches on google and seems it is not quite a common  ...

Score: 0
Our Server HP ProLiant DL380 Gen 8 Hard Drive Not Detecting
vn flag

Our Server is working fine since long time, today once our server has restarted suddenly we found the boot error. After short time we identified our Raid drives are not deducted by the Server.

Following error i found while starting :

1792 Slot 0: Drive array - Valid Data Found In Write Block Cache. Data will automatically be written on drive array. The following disk drive(s) are failed and should  ...

Score: 1
How do I tell Dovecot to use another server for SMTP?
cn flag

I am a bit lost on mail servers, but I have to install a mail proxy (Proxmox Mail Gateway) in front of the actual mail server (ISPConfig, Roundcube, Dovecot, Postfix).

On receiving emails, it uses the mail proxy which then sends the emails to the IMAP/POP server. But when sending emails (from the IMAP/POP server), the mail gateway isn't used, it sends the emails directly.

I kept the configuration fi ...

Score: 0
Postfix smtpd_client_restrictions with check_client_access not working
cd flag

I suddenly receive many spam mails per day and I’m trying to filter the source by IP.

In my main.cf file I have this:

smtpd_client_restrictions = 
        check_client_access cidr:/etc/postfix/blacklist,
        permit

and in this blacklist file I have IP addresses and networks defined in the following way according to https://linux.die.net/man/5/access. I don’t filter by domain name since ev ...

Score: 0
Qippur avatar
SMB mounted filesystem from old windows machine shows all files with identical names
ca flag

We successfully mounted on a linux server a folder shared by an old (XP) windows panel PC.

# mount.cifs //192.168.X.Y/folder /mnt/folder

Once we inspected the folder on client machine, we noticed that all files showed the same name

# ls /mnt/folder/

Conca_0C Conca_0C Conca_0C Conca_0C Conca_0C Conca_0C Conca_0C Conca_0C Conca_0C

As we know the real names of the folders, we tried to list the con ...

Score: 0
cernoel avatar
MTU Problems with vxnet over wireguard and linux bridge
cn flag

My Setup: Several Proxmox Hosts with one eth0 connected to LAN via bridge (vmbr0) in proxmox. (Default setup)

There is another "dummy" bridge device for internal traffic between Guests (vmbr100).

As first guest we have a "Router" VMs on each Host (debian bullseye) which are connected to vmbr0(host) on ens18(guest) and vmbr100 on ens19.

on the router we also have a simple vmbr100 linux bridge.

The Router's ...

Score: 0
queryman2000 avatar
Why is apache -X stuck in a pselec6() NULL loop?
in flag

version 2.4

pselect6(0, NULL, NULL, NULL, {tv_sec=0, tv_nsec=100000000}, NULL) = 0 (Timeout)

Repeats forever using strace. Only one httpd process enabled.

Score: 0
How is IPsec (strongswan) working without opening ports in UFW?
it flag

I needed to setup a site-to-site VPN between servers A and B, where server A is being managed by me and server B is being managed by a client. Server A is running Ubuntu 20.04 and I am using strongswan to setup the VPN on my end. I am using UFW to manage server A's firewall.

Public IP address of A: 16.XX.XXX.17 Public IP address of B: 14.XXX.XXX.94

Now after making the necessary configuration changes fo ...

Score: 0
ajmcello avatar
Apache 2.4 (52) debugging, several stuck apache2 -k start at 99%-ish CPU. strace stuck on FUTEX
in flag
PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
3023 www-data  20   0  262216  19280   8848 R  93.8   0.2   3:47.05 /usr/sbin/apach

Kernel release: 5.15.0-1002-aws

There are several that get stuck this way. Most do not return anything using strace -p . I've tried the root or earliest pid, but I can't find the culprit. I've tried:

rm /dev/random 
mknod -m 644 /dev/random c  ...
Score: 0
Cannot Ping Hostname after Ubuntu Firewall enable
co flag

When I disable the Ubuntu firewall, I can ping the windows server name. But when I enable the Ubuntu firewall, I am not able to ping using the windows server name.

What must I do to allow ping using hostname? thanks

Score: 1
ARP not working in docker container
es flag

I'm facing issue with ARP request/response from ubuntu container with windows platform as docker host.

The experimentation is performed with very basic setup.

The following network mode is available as part of docker desktop installation in windows.

D:\Docker\ubuntu>docker network ls
NETWORK ID     NAME      DRIVER    SCOPE
8375175c22dc   bridge    bridge    local
1b9942f6e958   host      host      lo ...
Score: 0
Ravi Teja RVN avatar
how to take mysql xtrabackup to a remote server
cn flag

I have a server running with mysql with huge db of 1 TB.

Now, I want to take full backup through percona xtra backup, because incremental backup is easy with percona xtrabackup.

Now,if I initiate taking backup in that server,storage is getting consumed(I dont want this). So, I am trying to initate backup in mysql server but the backup need to be stored in a remote server so the existing server stora ...

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