Unanswered Questions
78,240 questions with no upvoted or accepted answers
8
votes
2
answers
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Can Btrfs use SSD for metadata and leave bulk data on HDD?
is it possible for Btrfs to use SSD for metadata only & leave bulk data on less costly storage such as HDD? I refered to this page Using_Btrfs_with_Multiple_Devices and can not find a solution.
...
8
votes
1
answer
23k
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Connecting to MS SQL Server using FreeTDS: Error 20002: "Adaptive Server connection failed"
I am trying to use FreeTDS to connect from a Linux server (RHEL v7) to a separate server running MS SQL Server 2014. However, when attempting to connect with tsql I get the following errors (error ...
CommunityBot
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8
votes
1
answer
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How do I get an aggregate of all the stats from all uWSGI vassals using uwsgitop?
TL;DR
Can anyone tell me how I may get uwsgitop to monitor all of my vassals in my emperor-vassal setup in one shot?
I have an emperor-vassal setup for my uWSGI server, and I need to monitor all my ...
CommunityBot
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8
votes
1
answer
4k
views
Adding timestamps to supervisord logs
Is it possible to let supervisord add timestamps to the outputs in stdout_logfile and stderr_logfile? I couldn't find it anything about that in the documentation.
CommunityBot
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8
votes
3
answers
10k
views
Office 2013 Slow to Open/Save with Folder Redirection
We recently deployed folder redirection for a few individuals in the office. We are using a DFS Namespace share on a Server 2012r2 VM. We are redirecting Desktop and My Documents only. Clients are ...
CommunityBot
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8
votes
1
answer
314
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Windows Servers on ESXi 100% CPU at year rollover
We have a number of Windows Server 2008 R2 SP1 servers running on ESXi servers. At year end rollover 2014 to 2015 the CPUs go to 100% and the machines hang.
The solution appears to be a hotfix (...
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8
votes
1
answer
196
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Configure Juniper M320 as Ethernet/STM transparent converter
There is Juniper M320. We need to move ALL the traffic from one port to another. Everything that comes to one port goes to another and vice versa. No snooping or any other processing is required. One ...
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8
votes
3
answers
3k
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Redirect ssh trafic for one user through another port
Is it possible to have a configuration like this:
A server which listen ssh connections on port 22 as usual
For one user (let's say git) redirect all the traffic through another port (2222 for ...
8
votes
1
answer
6k
views
How to get what IP Address Ranges used by Visual Studio Online Load Testing Agents?
I need to setup IP Whitelisting in an environment that I need to run some Visual Studio Online Load Tests on. I was able to find some documentation as to what IP Addresses Visual Studio Online ...
CommunityBot
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8
votes
1
answer
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Direct Access Certificates
I want to know if I can use a single certificate for all the direct access functionality.
I am working at actually setting up DirectAccess on a relatively small network. Since this is a small ...
CommunityBot
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8
votes
1
answer
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DNS and Active Directory configuration for a branch office
We've got a branch office with no on-site services at the moment, and we'd like to change that. The biggest goal is to setup some file servers but faster logins and DNS resolution will be welcome as ...
CommunityBot
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8
votes
1
answer
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Outlook 2010 cannot reply to encrypted email
A coworker and I occasionally use encrypted email to send passwords. We both are using Outlook 2010, and both of our Digital IDs were created by the same authority. For my coworker, creating, replying,...
CommunityBot
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8
votes
2
answers
2k
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Grub2 reports physical volume pv0 not found on server non bootable anymore
I first installed my ubuntu server (11.10 amd64) using lvm but not fully mastering the concept of it. I think that's partly what made the mess of partitions on my two disks (seems to me). I installed ...
CommunityBot
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8
votes
1
answer
861
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What does tracert make NETBIOS work on Win7?
This is really strange - I have a workaround for this (read on), but I'd love to know why it works.
I had a VPN setup working fine with a WinServer2003 server and a Vista client.
Then I setup a new ...
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8
votes
1
answer
3k
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nginx lua: os.execute waitpid() failed (10: No child processes)
So, I'm trying to execute a script on every request. I know how that sounds, this is for development environment.
I've added this to my nginx config access_by_lua_file "/opt/nginx/git-magic.lua";
...
CommunityBot
- 1
8
votes
0
answers
4k
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Use perfmon to monitor a specific ASP.NET webapp across worker process restarts, IIS restarts, etc.?
I have a few perfmon performance counters that I'd like to track for a specific ASP.NET application over an extended period of time, say a week or a month. The trouble is that perfmon counters are ...
CommunityBot
- 1
8
votes
4
answers
2k
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Exchange 2010 send from multiple domains
We have a Windows 2008 Enterprise R2 SP1 server with multiple accepted domains configured on our Exchange 2010 console.
Configuration of exchange 2010:
In exchange console, under organization ...
CommunityBot
- 1
8
votes
0
answers
763
views
How to restart a daemondo controlled process?
How can I restart a daemondo controlled process with other options on my MAC (OS-X 10.4)? I changed /opt/local/etc/LaunchDaemons/org.macports.gearman/org.macports.gearman.plist and killed the gearman ...
stofl
8
votes
1
answer
19k
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God Process Monitoring - CentOS - Event System Not Found
I have god installed on at least a dozen (or more) servers running CentOS 5.5 in both i386 and x86_64 flavors that work perfectly. I just setup two new CentOS 5.5 x86_64 servers and installed God, but ...
CommunityBot
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8
votes
0
answers
7k
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Apache/SSL: (70014)End of file found: SSL input filter read failed
Figured upgrading on a long weekend was a smart move... Now I'm stuck.
The server is spitting out this error (loglevel info): "(70014)End of file found: SSL input filter read failed" when using the ...
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8
votes
2
answers
7k
views
Oracle 10g for Windows does not start up on system boot
We have an Oracle 10g Enterprise Edition installation (10.2.0.1.0) on a Windows Server 2003 virtual machine. It was initially created with Virtual Server 2005 R2 SP1 but has now been migrated to ...
CommunityBot
- 1
8
votes
2
answers
14k
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Can't successfully run Sharepoint Foundation 2010 first time configuration
I'm trying to run the non-GUI version of configuration wizard using power shell because I would like to set config and admin database names. GUI wizard doesn't give you all possible options for ...
CommunityBot
- 1
8
votes
1
answer
4k
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linux guarantee or reserve memory for a specific process
Is there a way to reserve a specific amount of memory for a specific service/process?
I would like to guarantee that OpenSSH always has enough memory available to it that it can accept a new SSH ...
CommunityBot
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8
votes
2
answers
4k
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Outlook 2010 "Cannot open this item" on Windows 7 64-bit
I have to admit this has stumped me...
User's Workstation
Outlook 2010 (32-bit) w/ Cached Exchange Mode enabled
Windows 7 Pro (64-bit)
Email account is on Exchange 2003
Problem
The user is unable ...
CommunityBot
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8
votes
1
answer
1k
views
Amazon S3 appears to be blocking cloudflare IP addresses. How do I fix it?
I have static content that is being served by Cloudflare. Cloudflare points to Amazon S3 to pick up the static content and serves it via a CNAME (cdn.mydomain.com). The bucket is setup properly and ...
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8
votes
1
answer
2k
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Configure Windows RAID-5 "drive failed" timeout?
Background
When a hard-drive controller detects an error, and needs to remap a sector, the drive normally becomes unresponsive for the seconds (or possibly minutes) it takes to try to complete the re-...
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7
votes
0
answers
2k
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Write performance is 5 times worse with LUKS on top of mdadm RAID10 than without LUKS
I have servers with many NVMe disks. I am testing disk performance with fio using the following:
fio --name=asdf --rw=randwrite --direct=1 --ioengine=libaio --bs=16k --numjobs=8 --size=10G --runtime=...
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7
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0
answers
1k
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Recovering/importing ZFS Linux pool with duplicate pool name
I did something very stupid today in attempting to add a third mirror to an existing Linux zpool named backup. Suffice it to say that I made a couple errors because I don't really do much admin with ...
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7
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0
answers
1k
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How many celery and gunicorn workers on the same server?
I have one server that runs a Django application served by gunicorn and a Celery task queue.
Gunicorn docs suggest (2 x $num_cores) + 1 as the default number of workers.
Celery docs show that the ...
- 165
7
votes
1
answer
454
views
Windows RDP: Attack targeting real account names
We have a Windows 2012 R2 server hosted in a datacenter, and we are using RDP for its administration. Automatic updates are enabled.
RDP login is not allowed for the Administrator account, and there ...
- 1,239
7
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1
answer
3k
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Is it possible to change the location of emptyDir volumes?
My kubernetes clusters' nodes all have small root partitions. Is it possible to configure k8s to use an alternate location for emptyDir volumes?
7
votes
0
answers
409
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Logrotate and "insecure permissions": What can actually go wrong?
Logrotate complained to me this morning that it would not rotate some logs because their parent directory is writeable by someone else than root. The man page states I can make the error message go ...
- 255
7
votes
1
answer
11k
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Every startup i need to manually run fsck /dev/mapper/ubuntu--vg-root
Hi every day when I start my ubuntu 18.04, then it's not starting and gives a below error.
(initramfs) exit
/dev/mapper/ubuntu--vg-root contains a file system with errors, check forced.
Inodes that ...
CommunityBot
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7
votes
2
answers
5k
views
Route Docker container traffic through another container
I'm trying to route tcp traffic of container B (10.10.1.2, custom binary using mysql and running on port 4242) through container A (10.10.1.3, haproxy, setup in transparent proxy mode) to the outside ...
CommunityBot
- 1
7
votes
1
answer
258
views
Can network packet corruption affect only one server process out of many that are talking to the database?
Context
We saw sporadic ActiveRecord::StatementInvalid errors from MySQL servers over the course of 4 hours yesterday. The errors haven't happened since then.
Strangely, SQL statements seemed to ...
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7
votes
1
answer
2k
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How can one configure an AWS ElasticSearch access policy using CloudFormation?
The AWS documentation on ElasticSearch access control talks about how to grant access to the ES domains subresources while preventing changes to the domain's configuration by creating an ES domain ...
CommunityBot
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7
votes
0
answers
10k
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nginx proxy_pass one file
I have a single file that I want to appear to host but that I don't. So I write this in my nginx server block:
location /d-p27.js {
proxy_pass https://data.example.com/p/piwik.js;
}
After ...
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7
votes
2
answers
1k
views
What repository is a yum group sourced from?
Is there an easy way to determine where a specific yum group is sourced?
I can query what groups are available using yum grouplist.
I can query group information using yum group info $yum_group_name
...
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7
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0
answers
3k
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Export Private ed25519 Key From GnuPG For Use in SSH
Is there a way to create an id_ed25519 (not id_ed25519.pub) file from an ed25519 keypair stored in GnuPG?
I've started keeping track of my SSH keys in GPG:
sec rsa3072 2017-12-12 [C]
...
7
votes
0
answers
3k
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excessive glusterfs memory usage
I run a 3-node glusterfs 3.10 cluster based on Heketi to automatically provision and deprovision storage via Kubernetes. Currently, there are 20 volumes active - most with the minimum allowed size of ...
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7
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0
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947
views
How to limit bandwidth per VPN connection?
I have a StrongSwan (IKEv2) server setup and would like to limit each VPN connection to 512kb/s.
After researching I came across tc in Ubuntu. I don't quite understand it and am fighting through the ...
- 1,575
7
votes
1
answer
4k
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haproxy ssl password protected private key
Usage: Haproxy as SSL termination
Requirement: Our private keys are password protected and we are not allowed to remove the password for the private key
Problem:
If i run the following command ...
CommunityBot
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7
votes
0
answers
184
views
Sunsetting Microsoft Identity Management for Unix the right way
I'd like to make sure that we don't have any connections to our AD controllers before sunsetting, but some run Microsoft Identity Management for Unix / Server for NIS. I'm having a dog of a time ...
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7
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0
answers
3k
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Windows: 'Query User' command reporting idle time inaccurately (false positives)
I'm working with ten other sysadmins that sometimes forget to log out of servers (or even lock them). For two days or more, I've been trying to come up with a 'script' that'll check each server we ...
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7
votes
1
answer
8k
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cryptsetup cannot close mapped device
When I run:
LANG=C cryptsetup --debug luksClose /dev/mapper/Pool-A
it fails as follows:
device-mapper: remove ioctl on Pool-A failed: Device or resource busy
Device /dev/mapper/Pool-A is still ...
CommunityBot
- 1
7
votes
0
answers
862
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cmd.exe as a built-in application pool identity
My IIS web applications run using the built-in application pool identity IIS APPPOOL\Foo.
Is it possible to run a command-line in the context of IIS APPPOOL\Foo using psexec or some other tool?
...
- 2,217
7
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0
answers
938
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RAID60 w. LSI 9361-8i: Consistency Check repetitively finds inconsistent parity
I'm maintaining a pre-configured storage system for a project team.
The storage consists of 36 x 8 TB HGST Disks (~240 TB net) in RAID60 (2x18 disks in RAID6), Controller is a MegaRAID SAS 9361-8i, OS=...
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0
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2k
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How to estimate storage and traffic used for docker images in AWS ECR?
I'm trying to esimate monthly cost of using AWS ECR. It will consist of: outgoing traffic cost (downloading images) and storage cost (storing images in ECR).
Let's assume, that:
We are building some ...
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7
votes
1
answer
2k
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Joining a server to AD via AWS cloudformation
I want to use cloudformation to automatically join new instances to AD.
When I googled this it looks like many people just use scripts in there cloudformation templates and pass in credentials- I don'...
CommunityBot
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7
votes
1
answer
1k
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Ubuntu server hang with ascii NUL characters in syslog and other files ( ^@^@^@… )
We are experiencing occasional hangs with ubuntu 16.04 LTS (kernel 4.4.0-34-generic) and we wonder if somebody has some clues how to get to bottom of this.
The log looks like this:
Aug 24 10:02:04 ...
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