Latest Server related questions

Score: 1
Boon Chye Phang avatar
Windows DHCP not showing the accurate leases
ke flag

In Windows System Event log, there are DHCP server warnings that IP address range of a scope (10.40.0.0) that available is low.

Windows Event Log

enter image description here

But in the DHCP program, the Address Leases is only showing 4 or 5 leases. Based on the settings it should allow 235 leases in total.

DHCP Address Leases DHCP scope properties

enter image description here

enter image description here

There is only 4 for reservation. enter image description here

Is it the Windows System Event log warnin ...

Score: 1
mt42 avatar
DHCP NTP Server Option 042 not propagated by Windows Server 2016
ph flag

I am trying to make NTP server settings available to our non-Microsoft devices on local wired and wireless network. Obviously, they don't know how to use MS AD time info from domain controller.

Our Windows Server 2016 is serving as DHCP server for both the local wired and wireless network. I have configured 042 NTP Servers option in DHCP Manager in both "Server options" and "Scope options", but ana ...

Score: 0
Domain Access Issues through RDP
in flag

We are adding new servers to a domain but having frequent issues with connecting to those servers through RDP. Frequently when trying to connect via RDP I get the message "the security database on the server does not have a computer account for this workstation trust relationship". The server is running and other things like APIs and web apps can still be accessed from the network. This is resolved b ...

Score: 0
Changing Hyper-V extended replication 'backoff' time
us flag

Is it possible to change the 'backoff' or 'wait' period before a server retries the extended replication process again?

The reason I ask is because we have the following scenario:

Main Server -> Replicates to Backup Server -> Extended Replication to offsite server.

Between the 'main server' to the 'replication server' all is fine, but between the 'replication server' and 'extended replication ser ...

Score: 0
Robert Campbell avatar
RHEL 8 Ansible playbooks not working with FIPS enabled
cn flag

I have two sets of Linux VMs in a GCP (Google cloud) environment: Debian9 and RHEL8. The RHEL8 environment is FIPS-140 enabled, due to security/compliance requirements. None of our Ansible playbooks work with the FIPS-enabled RHEL VMs, but still work fine on the Debian VMs. The Linux control host is Debian9 as well.

For the failed RHEL8 playbooks , seeing this log in the Ansible playbook -vvvv ou ...

Score: 1
code0x00 avatar
Will aws s3 be still accessible using pre-signed urls if we create a vpc endpoint gateway?
ro flag

I have a need to add a vpc endpoint for s3 so i can access it on lambda, but when i try to create the endpoint I get a warning

Warning

When you use an endpoint, the source IP addresses from your instances in your affected subnets for accessing the AWS service in the same region will be private IP addresses, not public IP addresses. Existing connections from your affected subnets to the AWS service t ...

Score: 0
Finding source of high IOWait
cn flag

I have a 5 node elasticsearch cluster. One host has had consistently high IOWait% (40+) for several weeks. The others seem fine (<10%).

Notable:

  • Host in question is not the cluster master
  • New indexes are randomly distributed among all 5 hosts
  • IOTop shows that all high-wait-% processes are elasticsearch (IE no bots, viruses, etc)
  • All data is stored on a SAN with a 10G bonded connection
  • All hosts ...
Score: 1
lesssugar avatar
Chrome doesn't prompt to use a local certificate after setting up client certificate authentication on Apache
lr flag

I have used this guide to set up client certificate authentication on Apache.

I verified my certificate using the openssl verify directive (it's valid), I also successfully imported the PFX file into my macOS Keychain and set it to "Trust always".

Additionally, I created a new .htaccess document in the /admin directory of my website and filled it with two lines:

SSLVerifyClient require
SSLVerifyD ...
Score: 0
Juan Chehin avatar
Load balancer with Nginx
us flag

When implementing an application with a horizontal cluster load balancing scheme. Should the database be hosted on a single server or should there be a database on each server?

Cluster horizontal

Score: 2
Not able to get swap partition UUID after creating it with Parted ansible's module
cn flag

I have to create a new partition in a fresh disk on a VM. I use the parted module in order to create the partition. In a future task (in the same playbook), I need to use the UUID of the device partition (not the partition UUID, but the device UUID of the partition, present for example in /dev/disks/by-uuid/)

The problem is that : I don't find a way to get the UUID of the partition in a task afte ...

Score: 2
StackBuck avatar
Windows Server Command Line for Remotly Measure Data Disk IOPS,CPU,RAM Monitoring
ru flag

I want to measure data usage like IOPS, CPU, RAM ,Capacity ,Bandwidth ETC from Remote Server.

I Know, that it is possible to measure it localy with the Typeperf Command.

However, again, i want to measure that data from Remote Server and export it to csv -in one command.

I want the results to display like that in CSV:

enter image description here

Score: 2
NFS poor performance on some vm's
de flag

I have a Cassandra cluster of 6 VMs, each of these VMs has an NFS share attached, the last few weeks the backups from some nodes began to fall off, began debugging, as a result I tried to write zeros, that's what happened in the end:

1vm

time dd if = / dev / zero of = foel bs = 16k count = 128k
131 072 + 0 records in
131072 + 0 records out
2147483648 bytes (2.1 GB) copied, 4.23151 s, 507 MB / s

r ...
Score: 0
Standard avatar
Can't mount exported directory as NFS version 4
de flag

I'm trying to create a simple NFSv4 export. What I did so far:

My exports file:

/srv/nfs4 <myipnet>/255.255.255.0(rw,sync,fsid=0,no_subtree_check)
/srv/nfs4/homes <myipnet>/255.255.255.0(rw,sync,no_subtree_check)

I also created a bind like it should be done for NFSv4 in fstab:

/home/nfshomes /srv/nfs4/homes none  bind  0 0

Then on my client I added this line to the fstab file:

server.ex ...
Score: 0
Mani Varma Indukuri avatar
Unable to reach WAN from LAN host on IPv6
ru flag

In my router, I have 2 interfaces enp1s0 (assumed as WAN) and enp4s0(assumed as LAN). I connected a LAN host and a WAN host. I can ping from LAN host to WAN port of the router but not to the gateway of WAN. The setting is as follows :

  • LAN host IP : 8888::5/64
  • LAN gateway IP (router's enp4s0) : 8888::1/64
  • WAN port IP (router's enp1s0) : 2401:fb00:0:1ff::1fd/64
  • WAN gateway IP : 2401:fb00:0:1ff::1fc/64
Score: 0
Ashik Basheer avatar
MariaDB doesn't start after server restart
cn flag

I have installed MariaDB on Ubuntu 20.0 where Mysql was installed already. I have removed MySql before installing MariaDB. I had to run command aa-remove-unknown and then sudo service mariadb start only then the DB server starts. This was working fine until a server restart today.

MariaDB doesn't seem to start and I noticed the following logs

sudo service mariadb start

Failed to start mariadb.service: Un ...

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