Unanswered Questions

74,148 questions with no upvoted or accepted answers
31 votes
1 answer
3k views

Unexpected and unexplained slow (and unusual) memory performance with Xeon Skylake SMP

We've been testing a server using 2x Xeon Gold 6154 CPUs with a Supermicro X11DPH-I motherboard, and 96GB RAM, and found some very strange performance issues surrounding memory when compared to ...
14 votes
1 answer
1k views

Using defaultAuthenticationType with PowerShell Web Access

PowerShell web access lets you choose the authentication type. By default, it uses a value of Default, which ends up being Negotiate. I have set up CredSSP to allow logging into the PSWA server itself ...
13 votes
1 answer
6k views

Is MSIZAP still useful, or is it obsolete?

I update flash using MSI files installed by group policy. However, with every update, about a third of the workstations fail to update (Windows Vista and Windows 7 32/64-bit editions). In the event ...
13 votes
1 answer
13k views

Parallel Redo Is Shutdown

When looking in Windows event logs, i'm seeing the following messages on an almost continuous basis - Starting up database 'Database'. Parallel redo is started for database 'Database' with worker ...
12 votes
3 answers
773 views

Dynamically Authenticate Apache with LDAP Based on Request String?

It is possible to use a portion of the request URI as an input into mod_authnz_ldap's Require ldap-group directive? I'm trying to dynamically check access to a bunch of different project directories, ...
11 votes
0 answers
8k views

Restoring data after zfs destroy

On Debian 8.7 I had a zfs pool. (obviously using ZFS on Linux, not Oracle or Solaris zfs) It was needed to extend ZFS pool from mirror on 2 disks to raidz on 4 disks. I did backup (one copy of data - ...
11 votes
1 answer
6k views

Change Envelope From to match From header in Postfix

I am using Postfix as a gateway for my domain and need it to change or rewrite the Envelope From address to match the From header. For example, the From: header is "joe@domainA.org" and the Envelope ...
11 votes
1 answer
707 views

Firefox dynamic default preference configuration

My users are all on NFS home directories and with hundreds of users all using Firefox it generates a bit of traffic reading/writing to the disk cache. As a result, I'd like to move the default ...
10 votes
0 answers
5k views

How can a Cognito user initialize TOTP on first login when MFA is required?

I am setting up Amazon Cognito for authentication to use a Kibana instance. I only permit administrators to create users, and I permit only the Cognito User Pool identity provider. When creating the ...
10 votes
0 answers
399 views

How much does FreeBSD accept_filter actually improve performance in a modern world?

I recently learned about FreeBSD's accept_filter socket option which can allow a worker process to avoid context switching by, for example, waiting until a full HTTP request is received with accf_http:...
10 votes
1 answer
1k views

Disable file locks on a read-only Windows File Share

Case On a Windows Server (2012R2 or 2016), I want to configure a file share offering a following functionality some users, publishers group, have a write access to the share; these users are ...
10 votes
0 answers
4k views

haproxy CD flags with browser, not with curl

Issuing the same url request, from the same workstation to the same haproxy server: with a browser (tried Chrome and Firefox): haproxy log shows CD flags with curl: haproxy log shows -- Both ...
10 votes
2 answers
1k views

Unable to bind OSX 10.9 to Active Directory 2008

I am struggling to bind OSX 10.9 to a 2008 r2 Active Directory. I can join the domain fine when I boot into Windows from the same machine. From OSX I can find the domain controller successfully and ...
10 votes
2 answers
1k views

Freebsd change default Internet channel route

I have two Internet channel and Gateway on freebsd. When I switch channel with the command route change default chan2, the command netstat -nr shows changed default route. But traceroute shows that ...
10 votes
1 answer
4k views

certutil -ping fails with 30 seconds timeout - what to do?

The certificate store on my Win7 box is constantly hanging. Observe: C:\>1.cmd C:\>certutil -? | findstr /i ping -ping -- Ping Active Directory Certificate Services Request interface ...

15 30 50 per page
1
2 3 4 5
4944