Questions tagged [namespaces]
The namespaces tag has no usage guidance.
58
questions
0
votes
1answer
52 views
Run docker in an existing network namespace?
Would it be possible to run a docker container inside an existing namespace ?
I created a namespace using:
ip netns add client
Now I want to run a container (with a bridge or host network, whatever is ...
2
votes
2answers
97 views
Unable to reach network namespace through master
I'm trying to create an isolated lab using network namespaces.
It works correctly, that is, only the machines in the network namespace can talk.
But now I want reach the machines by localhost using v-...
0
votes
1answer
124 views
Dovecot: issue with converting mdbox to MailDir
I have a problem to convert mdbox to MailDir. Log from that process looks like:
/bin/dsync -Dv -u user@domian.com mirror maildir:/tmp/destination/mailboxes/user@domian.com
Debug: Loading modules ...
0
votes
0answers
187 views
Communicating across macvlan network namespaces
Let's create two macvlan's and attach network namespaces to them:
$ sudo ip link add macvlan1 link eth0 type macvlan mode bridge
$ sudo ip link add macvlan2 link eth0 type macvlan mode bridge
$ sudo ...
1
vote
1answer
40 views
Added DFSR to Domain controller, non domain admins can not create shares
My situation is I deployed a couple of domain controllers at some locations. My boss didn't want to spend money on servers, so I reused some servers we were not using.
I installed them as domain ...
0
votes
0answers
56 views
Having more than one openvswitch instance in a server
I am working in a Linux software infrastructure that uses openvswitch and Namespaces. The idea is to create new instances of openvswitch when a instance being used becomes too much loaded and starts ...
1
vote
1answer
177 views
How to connect two networks having the same network address using a linux host which is part of both networks with the same IP address?
I have two cloned networks (lan1 and lan2) used for testing purposes, each with the same address space 10.20.80.0/22:
# 10.20.80.0/22
10.20.80.0 # first address
...
10.20.83.254 # last address
...
1
vote
0answers
61 views
Glusterfs support for user namespaces
I have a gluster volume mounted on a host machine and tried to run a namespaced docker container with a bind mount from the gluster mount on the host.
It seems that the user namespacing is not ...
0
votes
0answers
84 views
proc options in mount namespace
We have login nodes with hidepid=2 configured on proc to protect users' privacy, but this prevents the nrpe service from being able to do some service checks. I'd like to launch nrpe in a different ...
1
vote
0answers
202 views
Linux NFS (v4) user namespace file permissions
I am trying to set up a rootless container setup using podman and am having a problem with file permissions on NFS (running NFSv4).
Within the user namespace, I am able to create files as root on any ...
3
votes
1answer
2k views
Cannot create nested network namespace
Is seems that one is not able to create a network namespace from a network namespace. It results in "Error: Peer netns reference is invalid.".
Is this a bug or is there some kind of limitation that I ...
2
votes
6answers
3k views
Do Containers Have An OS?
I know that containers use the host's kernel and from what I understand , that's the reason we do not need an OS.
My questions are (and I couldn't find any good explanation online) :
1) If that's ...
1
vote
0answers
40 views
How to recover an SSD (Samsung) after deleting all the namespaces?
I deleted all the namespaces (2 were present) on a samsung drive (SSD). Now the drive is not being recognized by the system. How do I recover the SSD?
0
votes
2answers
2k views
How to run a command in another process's network namespace?
There is a process running in its own network namespace. I would like to telnet to the machine and run a command in this process network namespace, something like that (17543 is the pid of the process ...
0
votes
1answer
53 views
Kubernetes, partitioning around clusters and namespaces
Let's say we have 2 subsystems: A & B.
And we have 2 env: QA & Prod.
What would be a better way to organize it around cluster & namespace?. Is it:
One cluster for subsystem A, another ...
0
votes
0answers
89 views
Restore namespace for adapters lost to LXC
First, is there any method to list all adapters on a host even when held in another namespace, and second, how can I restore them if they don't automatically come back when a container is destroyed? ...
6
votes
1answer
5k views
How do I mount a private /proc inside a namespace inside a docker container?
I have a need to create namespaces inside a Docker container. And as part of this, I will need to mount a /proc private to the inner namespace. I realize that I will have to run the container with ...
3
votes
0answers
1k views
bind mount /proc in Docker container with user namespaces enabled
My dockerd (CentOS7: 17.12.0-ce, build c97c6d6) is running with user namespaces enabled for better isolation.
Now I build a image which is supposed to read for monitoring purposes also from /proc of ...
1
vote
1answer
262 views
Error deploying neo4j cluster on Kubernetes namespace
I am trying to install neo4j on kubernetes using Helm to a separate namespace and cluster startup is failing with the below error. But the same install into default namespace is working fine. Anyone ...
4
votes
1answer
1k views
Access another process's mount namespace
Is there a way to inspect the files and directories of another mount namespace?
setns(2) syscall appears to be able to move a thread to another namespace, but if this functionality is not already ...
1
vote
1answer
565 views
Docker namespaces and SELinux not working
My system:
Debian 9 Stretch
Docker version 17.06.0-ce, build 02c1d87
SELinux
This is just running fine.
But, if I also activate Namespace Remapping (default, using the dockremap User), I can't run ...
-2
votes
1answer
105 views
Domain without Nameservers- how to find them [duplicate]
I am a bit new to the servers. I still want to ask one question, and yes I know its a noob question but still... So I bought one domain from amazon AWS. The domain name is droni-bg.eu. Do you know how ...
11
votes
2answers
5k views
Chrome under Docker: CAP_SYS_ADMIN vs privileged? [closed]
I am running chromedriver + chrome inside Docker in my test environment.
Everything was working fine until latest CoreOS upgrade.
These are the versions that seem to work:
VERSION=1185.5.0
...
2
votes
1answer
158 views
Why LXC requires restart?
LXC documentation says:
Just before you create your first container, you probably should logout and login again,
or even reboot your machine to make sure that your user is placed in the right ...
2
votes
0answers
242 views
Can systemd's .mount units be used to mount to points within a service's namespace only?
I am interested in setting a temporary directory that exists for the duration of the .service unit's running - exactly like the PrivateTmp= directive but on a custom mount point specified by a systemd ...
1
vote
0answers
562 views
WebDav Performance - Drive mapping vs Web Browsing
I can't seem to find any information about this topic. We have setup an IIS server with WebDav support and this seems to be a fine solution but we're getting fairly slow performance out of a specific ...
0
votes
1answer
74 views
Linking a domain name to a web server without full masking
I'm currently trying to deploy my first website and I ran trough a small issue with DNS. I have my website www folder available (hosted on atlantic.net cloud) and I registered a domain through godaddy....
-2
votes
2answers
775 views
How to run a program in a new PID namespace
How to run a program in a new PID namespace? All tutorials on the internet show writing some custom C code in order to do it. Is there a command instead for that?
1
vote
0answers
472 views
Forward port to virtual IP in namespace
So, I followed this guide to make a namespace where I can run my VPN:
https://schnouki.net/posts/2014/12/12/openvpn-for-a-single-application-on-linux/
It works fine so far, but I have one problem. I ...
0
votes
1answer
2k views
publish DFS namespaces?
We have multiple domain controllers and file servers, and have recently begun migrating to DFS. Everything works quite well, but one thing has me scratching my head... DFS namespaces not found on ...
1
vote
1answer
781 views
dovecot namespace: empty prefix vs. list=yes
I just upgraded dovecot from 2.1.7 to 2.2.13, and my previously working configuration broke.
I have one user with an empty prefix in his default namespace:
Error: XXXX: Initialization failed: ...
10
votes
3answers
14k views
How can I move an interface out of a network namespace?
If I move an interface temporarily into a netns with
ip link set eth10 netns myns
then it no longer is visible in the root, only within the namespace myns.
How do I move it back, something like (...
2
votes
1answer
2k views
Dovecot not working with added public namespace
we're running Dovecot 2.2.5 under OS X Server 4.1 (under 10.10.3). I'm trying to add a public namespace with some public folders without success.
doveconf -n:
# 2.2.5: /Library/Server/Mail/Config/...
0
votes
0answers
90 views
DFS Namespace is inaccessible when DC4 is up and running
DC1, DC2 and DC3 are at site A. DC4 and DFS server (2008 R2) are at Site B.
DC4 is Server 2003 and not a Global Catalog. DC1, DC2 and DC3 all are Server 2003, FSMO role holders and a Global Catalog. ...
2
votes
2answers
4k views
How to configure a Linux network namespace that allows UDP broadcast
I'm trying to use the ip netns family of commands in Linux to create a network namespace in which I can run a program that uses UDP broadcast. I do not need access to the Internet, or any interface on ...
-1
votes
1answer
635 views
Hosts cannot ping in two name spaces using Open Vswitch
I have two name spaces red and blue. Red is connected to host1, and blue is connected to host2,
but these two hosts cannot ping each other. Here is the commands that I put:
ip link add host1 type ...
-1
votes
1answer
1k views
Dovecot: autocreate public mailboxes?
Currently I have a problem with my understanding of public mailboxes with dovecot.
What is currently running is postfix together with dovecot (also with dovecot's sasl).
Whenever an e-mail reaches my ...
3
votes
0answers
495 views
how to move process from one namespace to other? [closed]
Is there any available method to move process/group of processes from one namespace to other in Linux? I mean methods via commands of some packages or it can be done via setns()? E.g. I have processes ...
0
votes
1answer
1k views
Creating VLANs between network namespaces [closed]
I want to implement the topology shown in the figure below using network namespaces (ns1 to ns4).
...
1
vote
1answer
7k views
Linux network namespaces - ping fails on specific veth
I just started to exploring network namespaces. I try to implement the following simple setting following the article in http://www.opencloudblog.com/?p=42
+--------+ +--------...
2
votes
0answers
1k views
access tap interface in network namespace across machines
I want to be able to access services running on a TAP interface within a namespace from outside the machine where it is running. I have setup that looks like this -
VM1/Machine1
+eth0 : Public ...
10
votes
1answer
5k views
Macvlan based interface pings from host but not from namespace
[EDIT]
The production system is currently a mix physical and ESXi based system. We obviously would never use virtualbox even for a pre-production environment ! It was used here only to quickly narrow ...
2
votes
1answer
267 views
Public dovecot namespace visible only to some users
I have a dovecot IMAP server (version 2.1.7) with Maildirs and a virtual user setup (e.g. all accounts are mapped to the same system user). I’d like to create a public namespace shared between users A ...
2
votes
1answer
3k views
OpenVSwitch between namespaces
I'm trying to configure a bridge between two TAP interfaces each created inside their own network namespace, on Linux.
I'm using OpenVSwitch as software bridge.
These are the steps that I believe ...
0
votes
1answer
5k views
PHP xpath: extract all nodes, even with namespaces
I am new to PHP's simplexml and xpath implementation, but here's what I want to do:
I have this XML file (excerpt from a youtube API response):
<?xml version="1.0" encoding="UTF-8"?>
<feed ...
0
votes
1answer
1k views
Exchange 2010 - smtp namespace sharing
I'm setting up SMTP namespace sharing between two different Exchange 2010 organizations/forests that are connected via an AD trust.
I'm using these 2 articles as references:
Configure Exchange to ...
0
votes
1answer
169 views
Open File dialog shows a renamed folder
I recently renamed a directory in the "My Pictures" folder from "ghostAlbum" to "imageAlbum"
Explorer shows what I would expect (the new folder) as does the command line "dir" command.
Excel's and ...
5
votes
3answers
4k views
how to prevent direct access to DFS Namespace shared folders
I have made a DFS Namespace named \\dc1\bank. There are some other folders from another file servers(for example \\dc1\bank\folder1 is the folder on \\fs1\folder1). I want to restrict users to direct ...
7
votes
1answer
10k views
Determine which DFS referral target a user is using
Our DFS namespace is set-up so that \\company.local\users is hosted on both a UK server and USA server with referral based upon the user's site. Works a treat except we suspect today, DFS failed over ...
2
votes
2answers
5k views
Update internal DNS server in my organization
We have our own internal DNS server inside our network on our domain. I just changed the nameservers of a bunch of our domain names through our registrar. Now on my home PC (off the network) the ...
