I am trying to access my home wireless internet and the troubleshooting screen says microsoft virtual wifi miniport adapter has a driver problem. What does this mean??
so apparently, you can't use VirtualBox etc with Windows Home 7. because you would be using two licenses instead of one.
So other users that tried virtualization with Windows Home Premium 7, did you just end up using another OS like Ubuntu etc? Did you find a workaround for using Windows?
When I say virtualization, I mean virtual machine of sort - where dangerous websites can be visited, nasty applications can be tried etc.
I would like to write things like this in /etc/apt/sources.list:
deb sftp://[email protected]/path other stuff
When I try this, apt-get complains that there is no sftp method for apt:
# apt-get update
E: The method driver /usr/lib/apt/methods/sftp could not be found.
Has anyone written a patch to add the sftp method for apt? All I could find in Google was this spec for Ubuntu.
Thanks for your help.
We experienced some strange thing in our mongodb gridfs platform. The platform actually is a bi Xeon E5 (bi quad core) with 128GB of memory, running on freebsd 9 with a zfs pool dedicated for mongodb.
[root@mongofile1 ~]# uname -sr
FreeBSD 9.1-RELEASE
our /boot/loader.conf
vfs.zfs.arc_min="2048M"
vfs.zfs.arc_max="7680M"
vm.kmem_size_max="16G"
vm.kmem_size="12G"
vfs.zfs.prefetch_disable="1"
kern.ipc.nmbclusters="32768"
/etc/sysctl.conf
net.inet.tcp.msl=15000
net.inet.tcp.keepidle=300000
kern.ipc.nmbclusters=32768
kern.ipc.maxsockbuf=2097152
kern.ipc.somaxconn=8192
kern.maxfiles=65536
kern.maxfilesperproc=32768
net.inet.tcp.delayed_ack=0
net.inet.tcp.sendspace=65535
net.inet.udp.recvspace=65535
net.inet.udp.maxdgram=57344
net.local.stream.recvspace=65535
net.local.stream.sendspace=65535
we follow the recommendation for the ulimit :
[root@mongofile1 ~]# su - mongodb
$ ulimit -a
cpu time (seconds, -t) unlimited
file size (512-blocks, -f) unlimited
data seg size (kbytes, -d) 33554432
stack size (kbytes, -s) 524288
core file size (512-blocks, -c) unlimited
max memory size (kbytes, -m) unlimited
locked memory (kbytes, -l) unlimited
max user processes (-u) 5547
open files (-n) 32768
virtual mem size (kbytes, -v) unlimited
swap limit (kbytes, -w) unlimited
sbsize (bytes, -b) unlimited
pseudo-terminals (-p) unlimited
This server have a twin (same config exactly) for ReplSet in other data center and we have a virtualized arbiter.
Some time, almost 3 days, the process of mongodb exit. The problem begin with:
Fri Nov 8 11:27:31.741 [conn774697] end connection 192.168.10.162:47963 (23 connections now open)
Fri Nov 8 11:27:31.770 [initandlisten] can't create new thread, closing connection
Fri Nov 8 11:27:31.771 [rsHealthPoll] replSet member mongofile2:27017 is now in state DOWN
Fri Nov 8 11:27:31.774 [initandlisten] connection accepted from 192.168.10.162:47968 #774702 (20 connections now open)
Fri Nov 8 11:27:31.774 [initandlisten] connection accepted from 192.168.10.161:28522 #774703 (21 connections now open)
Fri Nov 8 11:27:31.774 [initandlisten] connection accepted from 192.168.10.164:15406 #774704 (22 connections now open)
Fri Nov 8 11:27:31.774 [initandlisten] connection accepted from 192.168.10.163:25750 #774705 (23 connections now open)
Fri Nov 8 11:27:31.810 [initandlisten] connection accepted from 192.168.10.182:20779 #774706 (24 connections now open)
Fri Nov 8 11:27:31.855 [initandlisten] connection accepted from 192.168.10.161:28524 #774707 (25 connections now open)
Fri Nov 8 11:27:31.869 [initandlisten] connection accepted from 192.168.10.182:20786 #774708 (26 connections now open)
and after many "can create new thread"
[root@mongofile1 /usr/mongodb]# tail -n 15000 mongod.log.old |grep "create new thread"|wc
5020 55220 421680
and finish by a magnificent
Fri Nov 8 11:30:22.333 [rsMgr] replSet warning caught unexpected exception in electSelf()
pure virtual method called
Fri Nov 8 11:30:22.333 Got signal: 6 (Abort trap: 6).
Fri Nov 8 11:30:22.337 Backtrace:
0x599efc 0x8035cb516
0x599efc <_ZN5mongo10abruptQuitEi+988> at /usr/local/bin/mongod
0x8035cb516 <_pthread_sigmask+918> at /lib/libthr.so.3
Extract of mongodb from top
78126 mongodb 77 20 0 1253G 1449M sbwait 0 0:20 0.00% mongod
If I restart the process when it crash, the problem is fixed for almost 3 days.
Has anyone seen this before, or know of a fix?
In my web app, I'm toying with the idea of giving my user the opportunity to select a subdomain of their choosing, so they could select something like:
foobar.myapp.com
where foobar is their chosen subdomain. What is the proper way to go about setting up something like this? .htaccess? Have some api for writing virtual hosts? The application would still always map to one directory on my sever, I just want to give theme a custom URL.
Any intelligent way to partition 1TB and be prepared for resizing/adding/deleting partitions?
I was thinking about LVM, but as far as i remember, Windows7 can't be installed on logical volume right?
For now my plan is:
- ~150GB for Windows7 and other stuff (VisualStudio..., maybe I'll split it 100/50 or something like that) - simple NTFS
- 850GB = LVM - disk for linux (Ubuntu) and other stuff virtual machines etc.
I'm mostly interested in how and what tools should I use to get easy in maintain partitions for both systems.
I set up a new DNS entry for one of my subdomains (I haven't set up any Apache virtual hosts or anything like that yet). How can I check that the DNS information has propagated?
I assumed that I could simply ping my.subdomain.com and assume that if it could resolve, it would show the IP address I specified in the A record. However, I don't know if I am assuming correctly. What is the best way to check this information?
My company's router is Zyxel P-320W and I have a public static IP.
I registered a few domains name and point to this IP address.
I already setup Virtual Hosts and configured port-forwarding to my internal server and it works well. I can connect to all domains from outside
The problem is I cannot connect to my domains from inside
One workaround way is modify hosts file to add internal IP for those domains, but my company have many computers and I don't want to setup all PC manually
I have SQL Server 2005 on this laptop. I probably got installed along with Visual Studio.
The thing is, I don't use it and it's constantly running. Process Explorer reports that it has a virtual Size of 1.5 GB.
I want to uninstall this, but I'm not sure if there are any other processes dependent on this.
I have a Virtual Server with 1GB of RAM. When i start glassfish with asadmin start-domain it instantly allocates all available memory, although i defined -Xmx128m in my domain.xml. Am I missing an option here? How can I prevent glassfish from using all free memory?
I've VirtualBox on a Windows 7 PC and created a virtual machine for Windows XP. Here is what I want to do:
Run VirtualBox
Power on guest OS (named "Windows XP")
Open Winword in guest OS
I want to accomplish these 3 steps at once (by using a batch file for example).
Any help would be appreciated.
In fact I've a batch file but it does not work as I wanted:
"C:\Program Files\Oracle\VirtualBox\Vboxmanage.exe" startvm "Windows XP"
TIMEOUT 30
"C:\Program Files\Oracle\VirtualBox\VBoxmanage.exe" guestcontrol "Windows XP" execute --image "C:\PROGRA~1\MICROS~2\OFFICE11\WINWORD.EXE" --username xpuser
I managed to have a local install of Gitorious. Now I need to finalize the apache integration using a virtual server but nothing seems to work. See for example my /etc/hosts file:
127.0.0.1 localhost
172.26.17.70 darkstar.ilri.org darkstar
172.26.17.70 git.darkstar.ilri.org
My vhosts.conf has the following entries:
#
# Use name-based virtual hosting.
#
NameVirtualHost *:80
<VirtualHost *:80>
<Directory /srv/httpd/htdocs>
Options Indexes FollowSymLinks ExecCGI
AllowOverride None
Order allow,deny
Allow from all
</Directory>
ServerName darkstar.ilri.org
DocumentRoot /srv/httpd/htdocs
ErrorLog /var/log/httpd/error_log
AddHandler cgi-script .cgi
</VirtualHost>
<VirtualHost *:80>
<Directory /srv/httpd/git.darkstar.ilri.org/gitorious/public>
Options FollowSymLinks ExecCGI
AllowOverride None
Order allow,deny
Allow from All
</Directory>
AddHandler cgi-script .cgi
DocumentRoot /srv/httpd/git.darkstar.ilri.org/gitorious/public
ServerName git.darkstar.ilri.org
ErrorLog /var/www/git.darkstar.ilri.org/log/error.log
CustomLog /var/www/git.darkstar.ilri.org/log/access.log combined
AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript text/css application/x-javascript
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
<FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf)$">
ExpiresActive On
ExpiresDefault "access plus 1 year"
</FilesMatch>
FileETag None
RewriteEngine On
RewriteCond %{DOCUMENT_ROOT}/system/maintenance.html -f
RewriteCond %{SCRIPT_FILENAME} !maintenance.html
RewriteRule ^.*$ /system/maintenance.html [L]
</VirtualHost>
Now, when I go with Firefox to darkstar.ilri.org it shows the default Apache screen: "It works!". but when I go to git.darkstar.ilri.org it waits for few seconds then falls to darkstar.ilri.org and the default apache page. No error is reported. If I run httpd -S I get:
VirtualHost configuration:
wildcard NameVirtualHosts and _default_ servers:
*:80 is a NameVirtualHost
default server darkstar.ilri.org (/etc/httpd/extra/httpd-vhosts.conf:21)
port 80 namevhost darkstar.ilri.org (/etc/httpd/extra/httpd-vhosts.conf:21)
port 80 namevhost git.darkstar.ilri.org (/etc/httpd/extra/httpd-vhosts.conf:37)
Syntax OK
The funny thing is that if I configure gotirious in a host called gitrepository, add 127.0.0.1 gitrepository and go with Firefox to gitrepository.. Gitorious works... But why not with git.darkstar.ilri.org?
Many thanks in advance.
For OpenVZ, an example of container-based virtualization, it seems that host and all guests are sharing the filesystem cache. This sounds paradoxical when talking about virtualization, but this is actually a feature of OpenVZ.
It makes sense too. Because only one kernel is running, it's possible to benefit from sharing the same pages of filesystem cache in memory. And while it sounds beneficial, I think a set up here actually suffers in performance from it. Here's why I think why: my machines aren't actually sharing any files on disk so I can't benefit from this feature in OpenVZ.
Several OpenVZ machines are running MySQL with MyISAM tables. MyISAM relies on the system's filesystem cache for caching of data files, unlike InnoDB's buffer pool. Also some virtual machines are known to do heavy and large I/O operations on the same filesystem in the host.
For example, when running cat *.MYD > /dev/null on some large database in one machine, I saw the filesystem cache lowering in another, monitored by htop. This essentially flushes all the useful filesystem cache in guests (FIFO) and so it flushes the MySQL caches in the guests.
Now users are complaining that MySQL is very slow. And it is. Some simple SELECT queries take several seconds on times disk I/O is heavily used by other machines.
So, simply put:
Is there a way to avoid filesystem cache being wiped out by other virtual machines in container-based virtualization?
Some thoughts:
Choosing algorithm for flushing filesystem cache in the kernel. (possible? how?)
Reserving a certain amount of pages for a single VM. (seems no option for filesystem cache type of pages that reading man vzctl)
Will running MySQL on another filesystem get me anywhere?
If not, I think my alternatives are:
Use KVM for MySQL-MyISAM running VMs. KVM actually assigns memory to the VM and does not allow swapping out caches unless using a balloon driver.
Move to InnoDB and tune the buffer pools, dirty pages, etc. This is now considered to be 'nice to have' on the long-term as not everyone responsible for administration of the system understands InnoDB.
more suggestions welcome.
System software: Proxmox (now 1.9, could be upgraded to 2.x). One big LV assigned for the VMs.
What method do you use to test or evaluate potential new email filtering systems before you set it up on your production network?
I am particularly interested in methods that are appropriate for small/medium sized organizations with a single mail server without the resources to build a duplicate of their email system.
I have a pool of XenServer hosts running the Free version of XenServer 5.6 FP1. I was wondering if I change the network backend to use Open vSwitch if I can specify ACLs on individual network VIFs without needing to use the DVS appliance (distributed virtual switch) which requires an Advanced License or higher.
Basically I'm looking for a way to isolate VMs on my network so that if a user had root access on the command line they couldn't access other servers they should not be able to (without using a VLAN).
We have just virtualised our web servers but are experiencing problems when trying to connect with the existing DB server. The error message that is being returned from the virtual machines is as follows:
A connection was successfully
established with the server, but then
an error occurred during the login
process. (provider: TCP Provider,
error: 0 - The specified network name
is no longer available.)
Any help would be much appreciated - Many thanks in advance.
We have setup ipsec and l2tp on linux. One question came up (due to firewall management policy) is whether it's possible to have 1 virtual interface instead of one per connected client.
Now we have:
ppp0 serverip clientip1
ppp1 serverip clientip2
Want to have:
l2tp_tun serverip serverip
like with OpenVPN's tun interfaces and then to be able to push IP address and route to each client.
I've made three snapshots on VirtualBox virtual machine (winxp).
I want to go back to Snapshot 2.
If I click on "Snapshot 2" and click Start, it goes back to the current state.
I can click on "Current State" and "revert to current snapshot" (unclear: what is the "current snapshot", since I have 3 snapshots), but after it is finished, I can't discern what it did exactly and when I click start, it returns to the current state.
How do I go back to Snapshot 2?
I'm using the EXPORT feature in Hyper-V to move a large Virtual Machine (VM) over a 1GB network from a Windows 2008 to a Windows 2008 R2 box (200GB) and its so intense that I get the following icon on my destination Hyper-V manager:
Is this expected? Is there another way to get large file across the network and minimize this intense I/O effect? Anyones else ever seen that Do Not Enter sign? The other VMs are functional but slow, but I'm guessing that is expected.
I have a PSD for a website that must be sliced. I can not work in Win or OSX box(or a virtual machine).
What are the solutions for editing a PSD in Ubuntu 9.10?
Which one do you recommend?
Thank you.
Postfix serves for my virtual domains and works fine.
But for one of my domains:
- it bounces mails targeted at [email protected]
- it rejects mails targeted at [email protected]
problem is, [email protected] does not exist either.
here is my postconf
why does it bounce [email protected], and reject other non existing mails?
Thanks.
hi
each time i start my win7 guest in kvm, it find a new network and ask me if it is a 'home'/'public' network. tha mac of the virtual nic is the same. how to stop this?
my win7 guest connect to the network through vde.
Hello,
I have a bunch of word forms filled in and I need to get that data to Excel / CSV / anything structured. I've seen solutions on web on how to do it one at a time but are there established methods on how to do it in batch?
I wanted to ask before writing a powershell script.
I'm trying to convert my system to RAID 0 and so far I found contrasting opinions on the process. Somebody says Windows 7 can't boot from virtual volumes, somebody says it can.
My ideal setup would be two 500gb HD striped in RAID 0 with the OS and software installed on them.
Any thoughts?
I'm running
psql -U postgres template1 -c "select * from pg_stat_activity"
and the output is too wide for my terminal. Is there a *nix command I can use to prevent the output from wrapping? Maybe a setting in screen that enables virtual horizontal scrolling?