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• Install a KVM guest with LVM partitioning on an LVM partitioned host using virt-install fails, volume group already exists

  - by Rilik84

  our setup consists of a ubuntu 10.04 kvm host server with LVM, on top of which we install the ubuntu 10.04 virtual machines via virt-install and preseed. Each VM has a dedicated logical volume which we pass to virt-install via the "--disk path=/dev/sysvg/vm-name" parameter. The virtual machines themselves are using LVM as well. Virt-install seems to have a few issues with this setup. Say we want to install two virtual machines in parallel. The first vm installs correctly while the second halts during the partitioning, complaining with this error: "volume group name already in use". I tried removing the logical volumes, recreated them, rebooted the kvm host to clear any leftovers but the issue perists. The preseed is telling the vms to create a volume group named "sysvg", which is the same name used by the volume group of the kvm host. Considering this I did another test: I got rid of the preseed part taking care of the partitioning/lvm creation and started the creation of two vms in parallel. If, when prompted, I instruct the vms' installer to do a guided partitioning of the disk with LVM, it will still fail giving this different error on both the vms: Physical Volume /dev/sda5 is already in volume group sysvg. As I wrote, sysvg is the volume group used by the KVM host. So I thought the name clashing was the issue. By removing the preseed part I skipped the volume group naming. I can't understand how the virtual machines would be aware of the presence of that volume group since they're supposed to be isolated from it, especially after I removed and recreated the logical volumes dedicated to them. That detail should not be exposed at all to them! Thanks for the help. I'm clueless.

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• Translating IPTables rule to UFW

  - by Dario Fumagalli

  we are using an Ubuntu 12.04 x64 LTS VPS. Firewall being used is UFW. I have setup a Varnish + LEMP setup. along with other things, including an Openswan IPSEC VPN from our office to the VPS data center. A second in house Ubuntu box is to act as MySQL slave and fetch data from the VPS through the VPN. Master's ppp0 is seen as 10.1.2.1 from the slave, they ping etc. I have done the various required tasks but I can't get the client (slave) MySQL (nor telnet 10.1.2.1 3306) to access the master through the VPN unless I issue this fairly obvious IPTables command: iptables -A INPUT -s 10.1.2.0/24 -p tcp --dport 3306 -j ACCEPT I willingly forced the accepted input to come from the last octet. With this rule everything works just fine! However I want to translate this command to UFW syntax so to keep everything in one place. Now I admit being inexperienced with UFW, I prepared rules like: ufw allow proto tcp from 10.1.2.0/24 port mysql and 2-3 variations involving specifying 3306 instead of mysql, specifying a target IP (MySQL's my.cnf at the moment is configured as 0.0.0.0) and similar but I just don't seem to be able to replicate the simple iptables rule in a functional way. Anyone could kindly give me a suggestion that is not to dump UFW? Thanks in advance.

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• /dev/input/uinput Device appears to be 'broken'

  - by Adam Luchjenbroers

  I'm trying to setup Pystromo so that I can remap the keys on my Belkin N52TE gamepad. Pystromo basically captures the key strokes and then outputs the remapped keystrokes to the uinput device. However, at the moment it simply swallows the input and outputs absolutely nothing. I've tracked the issue to something being wrong with my uinput device, with the smoking gun being: # ls -l /dev/input/uinput crw-rw---- 1 root plugdev 10, 223 Dec 31 2009 /dev/input/uinput # cat /dev/input/uinput cat: /dev/input/uinput: No such device The uinput module is loaded, and can be clearly seen via lsmod. Anyone seen this before, or can think of something worth attempting? Current Setup Gentoo Linux Kernel 2.6.32 (Gentoo Sources 2.6.32-r1) HP DV7 Laptop Output dmesg dmesg | grep uinput does nothing, and no new lines appear if I run modprobe -r uinput && modprobe uinput. Yet the uinput module can clearly be seen when running lsmod: # lsmod | grep uinput uinput 6200 0 lsusb # lsusb Bus 005 Device 003: ID 050d:0200 Belkin Components Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 002: ID 1532:0101 Razer USA, Ltd Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 5986:0143 Acer, Inc Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 002: ID 03f0:171d Hewlett-Packard Wireless (Bluetooth + WLAN) Interface [Integrated Module] Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub lsusb -v PasteBin Update Hmm, updating evdev and hal seems to have partially fixed it. /dev/input/uinput still can't be accessed but Pystromo is now remapping keys successfully. I'm a little bit mystified about what's going on here, but it seems that my understanding of how all this works is flawed. Since I've posted a bounty, I'll leave this here for someone to post an explanation for how user-space input devices work under the hood.

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• Wildcard SSL and Apache configuration

  - by Nitai

  Hi all, I'm pulling my hard on this configuration, which probably is simply. I have a wildcard ssl certificate which is working. I have the website setup to run on domain.com under SSL. Now, I'm in need to run many subdomains (*.domain.com) on the same server with the same SSL certificate. Shouldn't be that hard, right? Well, I can't get it going. Point is, that the first config is another Tomcat server that serves another site and listens to domain.com and www.domain.com. The other config listens to *.domain.com and pulls the content from another Tomcat server. I already tried this whole setup with mod_rewrite, but simply don't see what I'm doing wrong. Any help very much appreciated. Here is my conf in Apache 2.2: <VirtualHost *:443> SSLEngine on SSLCertificateFile ... SSLCertificateKeyFile ... SSLCertificateChainFile ... ServerName domain.com ServerAlias www.domain.com ProxyRequests Off <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPreserveHost On ProxyPass / ajp://localhost:8010/ ProxyPassReverse / ajp://localhost:8010/ </VirtualHost> <VirtualHost *:443> SSLEngine on SSLCertificateFile ... SSLCertificateKeyFile ... SSLCertificateChainFile ... ServerName domain.com ServerAlias *.domain.com ProxyRequests Off <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPreserveHost On ProxyPass / ajp://localhost:8009/ ProxyPassReverse / ajp://localhost:8009/ </VirtualHost> Thanks.

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• Keyboard issue when using kitty+puttycyg but not when using putty or cygwin alone

  - by kamaradclimber

  I would like to use a unique way to use console on my windows setup. Previously I used putty for remote access to linux servers and cygwin to have unix-like tools on windows. Then I discovered kitty which is a patched putty and have added the puttycyg patch. It provides the same way to connect to remote and local console. However, there is a strange behavior using vim when connected to the local console (using the puttycyg patch) : keys display A/B/C/D and replace the current character by these letter. In insert mode it does replace the caracter, in normal mode, no modification is made to the document even if the caracter is displayed as replaced. For instance, when I type : fixed bug with product deleted I get : fixed bbug wiwith prprodudueleteted I have read a lot of questions about this type of issue 3, 4 and googled it but there is no answer that work for me. The issue is present only for the setup kitty+puttycyg patch : cygwin alone works perfectly (and putty alone works also for access to linux servers). Any help would be appreciated !

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• What are the most important aspects to consider when choosing a SAN for a small office virtualizatio

  - by Prof. Moriarty

  I am in the process of consolidating 6 physical servers running 6 different operating system flavors (don't ask) into two identical physical servers (Dell PowerEdge 2900), using the free VMware ESXi 4.0 platform. We will install an iSCSI SAN over a 1GbE network, and store all virtual machine images on the SAN. Each physical server would run 3 VMs, and in the case of a physical server failure, we would manually switch over the other 3. These are all internal servers, while important, they can tolerate some amount of downtime (say <1h) to keep cost and complexity associated with HA down. I now need to choose the SAN to be used for the setup, on a low budget. We currently have about 2TB of data, but of course I want to able to grow, do backups of VM snapshots on other drives and remove them to a different location, etc. So what I would like to know is: Which are the must have features for this setup, without which using a SAN is not worth it? We are mostly a Dell shop, so I have been looking at the EqualLogic PS4000E High Availability model. Any opinions, anecdotes, bad experiences with this model? (This is one of the few models which could accomodate our existing disks from the physical servers.) If you can recommend something that is not Dell, but it has better value, I would most definitely consider it. Caveats, things to look out for?

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• Pros and Cons of a proxy/gateway server

  - by Curtis

  I'm working with a web app that uses two machines, a BSD server and a Windows 2000 server. When someone goes to our website, they are connected to the BSD server which, using Apache's proxy module, relays the requests & responses between them and the web server on the Windows server. The idea (designed and deployed about 9 years ago) was that it was more secure to have the BSD server as what outside people connected to than the Windows server running the web app. The BSD server is a bare bones install with all unnecessary services & applications removed. These servers are about to be replaced and the big question is, is a cut-down, barebones server necessary for security in this setup. From my research online I don’t see anyone else running a setup like this (I don't see anyone questioning it at least.) If they have a server between the user and the web app server(s), it is caching, compressing, and/or load balancing. Is there anything I’m overlooking by letting people connect directly from the internet ** to a Windows 2008 R2 server that’s running the web application? ** there’s a good hardware firewall between the internet with only minimal ports open Thank you.

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• hdfs configuration

  - by Ananymous

  I am a newbie. Trying to setup a hdfs system to serve my data (I don't plan to use mapreduce) at my lab. So far I have read, cluster setup in but I am still confused. Several questions: Do I need to have a secondary namenode? There are 2 files, masters and slaves. Do I really need these 2 files eventhough I just want hdfs? If I need them, what should go in there? I assume my namenode in masters and datanodes as slaves? Do I need slaves nodes What configuration files are needed for namenode, secondary namenode, datanode and client? (I assume core-site.xml is needed for all 4)? In addition, can someone suggest a good configuration model? sample configuration for namenode, secondary namenode, datanode, and the client would be very helpful. I am getting confused because it seems most of the documentation assumes I want to use map-reduce which isn't the case.

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• Can a pool of memcache daemons be used to share sessions more efficiently?

  - by Tom

  We are moving from a 1 webserver setup to a two webserver setup and I need to start sharing PHP sessions between the two load balanced machines. We already have memcached installed (and started) and so I was pleasantly surprized that I could accomplish sharing sessions between the new servers by changing only 3 lines in the php.ini file (the session.save_handler and session.save_path): I replaced: session.save_handler = files with: session.save_handler = memcache Then on the master webserver I set the session.save_path to point to localhost: session.save_path="tcp://localhost:11211" and on the slave webserver I set the session.save_path to point to the master: session.save_path="tcp://192.168.0.1:11211" Job done, I tested it and it works. But... Obviously using memcache means the sessions are in RAM and will be lost if a machine is rebooted or the memcache daemon crashes - I'm a little concerned by this but I am a bit more worried about the network traffic between the two webservers (especially as we scale up) because whenever someone is load balanced to the slave webserver their sessions will be fetched across the network from the master webserver. I was wondering if I could define two save_paths so the machines look in their own session storage before using the network. For example: Master: session.save_path="tcp://localhost:11211, tcp://192.168.0.2:11211" Slave: session.save_path="tcp://localhost:11211, tcp://192.168.0.1:11211" Would this successfully share sessions across the servers AND help performance? i.e save network traffic 50% of the time. Or is this technique only for failovers (e.g. when one memcache daemon is unreachable)? Note: I'm not really asking specifically about memcache replication - more about whether the PHP memcache client can peak inside each memcache daemon in a pool, return a session if it finds one and only create a new session if it doesn't find one in all the stores. As I'm writing this I'm thinking I'm asking a bit much from PHP, lol... Assume: no sticky-sessions, round-robin load balancing, LAMP servers.

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• arch openldap authentication failure

  - by nonus25

  I setup the openldap, all look fine but i cant setup authentication, #getent shadow | grep user user:*::::::: tuser:*::::::: tuser2:*::::::: #getent passwd | grep user git:!:999:999:git daemon user:/:/bin/bash user:x:10000:2000:Test User:/home/user/:/bin/zsh tuser:x:10000:2000:Test User:/home/user/:/bin/zsh tuser2:x:10002:2000:Test User:/home/tuser2/:/bin/zsh from root i can login as a one of these users #su - tuser2 su: warning: cannot change directory to /home/tuser2/: No such file or directory 10:24 tuser2@juliet:/root i cant login via ssh also passwd is not working #ldapwhoami -h 10.121.3.10 -D "uid=user,ou=People,dc=xcl,dc=ie" ldap_bind: Server is unwilling to perform (53) additional info: unauthenticated bind (DN with no password) disallowed 10:30 root@juliet:~ #ldapwhoami -h 10.121.3.10 -D "uid=user,ou=People,dc=xcl,dc=ie" -W Enter LDAP Password: ldap_bind: Invalid credentials (49) typed password by me is correct /etc/openldap/slapd.conf access to dn.base="" by * read access to dn.base="cn=Subschema" by * read access to * by self write by users read by anonymous read access to * by dn="uid=root,ou=Roles,dc=xcl,dc=ie" write by users read by anonymous auth access to attrs=userPassword,gecos,description,loginShell by self write access to attrs="userPassword" by dn="uid=root,ou=Roles,dc=xcl,dc=ie" write by anonymous auth by self write by * none access to * by dn="uid=root,ou=Roles,dc=xcl,dc=ie" write by dn="uid=achmiel,ou=People,dc=xcl,dc=ie" write by * search access to attrs=userPassword by self =w by anonymous auth access to * by self write by users read database hdb suffix "dc=xcl,dc=ie" rootdn "cn=root,dc=xcl,dc=ie" rootpw "{SSHA}AM14+..." there are some parts of that conf file /etc/openldap/ldap.conf looks : BASE dc=xcl,dc=ie URI ldap://192.168.10.156/ TLS_REQCERT allow TIMELIMIT 2 so my question is what i am missing that ldap not allow me login by using password ?

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• Is this a solution for having multiple SSL certificates on the same IP

  - by Saif Bechan

  I am running CentOS running on a VPS. I read some guides on having multiple SSL certificates on the same system, but I can not get the basics to work. The guide I got that makes the most sense to me is the doing the following. In CentOS I can make virtual NIC's. So I made 2 virtual NIC's to start with. 192.168.10.1, 192.168.10.2. Now I work in ISP manager Pro, so this is listening on my primary ip 1.1.1.1 For each website I have them listening on 192.168.10.1:80, 192.168.10.1:443 In the hosts file I made the following 2 entries 192.168.10.1 1st.com 192.168.10.2 2nd.com Now the strange thing is that when I browser to 1st.com I do not get the website located at 192.168.10.1, I get the website located at my prim IP 1.1.1.1 Should I do something like forwarding or routing for this setup to work? And the basic question: Will this setup even work? Are the SSL certificates based on the IP adress, or are the based on the host name, 1st.com and 2nd.com.

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• fail2ban block ports rules iptable

  - by J Spen

  I just installed Ubuntu Server 14.04 and don't have much experience with IPtables. I am trying to get a basic setup going where I only accept SSH connections on port 22 and 2222. I actually have that working with no problem using fail2ban ssh. Then I wanted to block all other ports except 423 and 4242 but either method of DROPing all connections that are not listed seems not to work and it blocks me out of everything. Below is the setup that works: -P INPUT ACCEPT -P FORWARD ACCEPT -P OUTPUT ACCEPT -N fail2ban-ssh -A INPUT -p tcp -m multiport --dports 22,2222 -j fail2ban-ssh -A fail2ban-ssh -j RETURN I tried to change it either to: -P INPUT DROP -P FORWARD ACCEPT -P OUTPUT ACCEPT -N fail2ban-ssh -A INPUT -p tcp -m multiport --dports 22,2222 -j fail2ban-ssh -A fail2ban-ssh -j RETURN or: -P INPUT ACCEPT -P FORWARD ACCEPT -P OUTPUT ACCEPT -N fail2ban-ssh -A INPUT -p tcp -m multiport --dports 22,2222 -j fail2ban-ssh -A INPUT -j DROP -A fail2ban-ssh -j RETURN I have noticed that the rules for fail2ban-ssh are automatically added to my iptables on boot because if I save them with iptables-persistant they are entered twice. How do I go about blocking everything accept those 2 ports using fail2ban? Is it a bad fail2ban configuration or do I need to add the fail2ban-ssh -j Return somewhere else in my code.

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• SSH into remote server using Public-private keys

  - by maria

  Hi, I have recently setup ssh on two linux machines (lets call them server-a, client-b). I have generated two ssh auth files on client-b machine using ssh key gen and can see both public and private files in .ssh dir. I have named them 'example' and 'example.pub'. Then I have added example.pub to sever-a's auth file. When I try to ssh into server-a it still requests a password authentication where as I want a password less login (private key on client-b is setup without password). When I try to ssh with '-v' .. get the following output: debug1: Next authentication method: publickey debug1: Trying private key: /Users/abc/.ssh/identity debug1: Offering public key: /Users/abc/.ssh/id_rsa debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Offering public key: /Users/abc/.ssh/id_dsa debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,keyboard-interactive debug2: we did not send a packet, disable method debug1: Next authentication method: keyboard-interactive debug2: userauth_kbdint debug2: we sent a keyboard-interactive packet, wait for reply debug2: input_userauth_info_req debug2: input_userauth_info_req: num_prompts 1 Password: Please help.

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• How many reverse proxies (nginx, haproxy) is too many?

  - by Alysum

  I'm setting up a HA (high availability) cluster using nginx, haproxy & apache. I've been reading great things about nginx and haproxy. People tend to choose one or the other but I like both. Haproxy is more flexible for load balancing than nginx's simple round robin (even with the upstream-fair patch). But I'd like to keep nginx for redirecting non-https to https among other things right at the point of entry to the cluster. On the other hand, nginx is a lot faster for serving static contents and would reduce the load on the powerful apache which loves to eat a lot of RAM! Here is my planned setup: Load balancer: nginx listens on port 80/443 and proxy_forwards to haproxy on 8080 on the same server to load balance between the multiple nodes. Nodes: nginx on the node listens to requests coming from haproxy on 8080, if the content is static, serve it. But if it's a backend script (in my case PHP), proxy forward to apache2 on the same node server listenning on a different port number. Technically this setup works but my concerns are whether having the requests going through several proxies is going to slow down requests? Most of the requests will be PHP requests as the backends are services (which means groing from nginx - haproxy - nginx - apache). Thoughts? Cheers

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• AD domain on web servers behind NAT - DNS issues?

  - by Ant

  I'm trying to setup an AD domain to manage the security between two Windows Server 2008 webservers that will sooner or later use NLB to balance website requests. I've hit a problem which I think is a simple solution and is down to DNS. My website domain is mydomain.com. The two servers are running behind a NAT firewall on the 10.0.0.0 IP range. I've setup the AD domain to be called ad.mydomain.com (as recommended by MS and a few other answers to questions on here). The second web server however doesn't want to join the domain, and gives an error pinning the problem on DNS - "ensure that the domain name is typed correctly" even though it queries the SRV record successfully and gets the correct DC back - dc.ad.mydomain.com. Doing a dcdiag /test:dns on the DC gives the Delegation error 'DNS Server dc.mydomain.com Missing glue A record'. I have a feeling I need to add something to the public DNS so that it in some way knows about ad.mydomain.com. Can anyone suggest whether I'm on the right track in adding something to the public DNS? Or whether it's something else? Many thanks

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• Walkthrough/guide building aplication server for multi tenant web app [on hold]

  - by Khalid Adisendjaja

  The web app will detect a subdomain such as tenant1.app.com, tenant2.app.com, etc to identify tenant environment, each tenant environment will have a different database credential (port,db name,etc) but still connecting to the same database server. Each tenant should use app.com for their main domain, using their own domain is prohibitted. Each tenant will have their own rest api endpoint such as tenant1.app.com/api/v1/xxxx, tenant2.app.com/api/v1/xxxx, tenant3.app.com/api/v1/xxxx I've come to a simple solution by setting a wildcard subdomain (*.app.com) on webserver Apache/Nginx vhost configuration file. I have googled so many concept for building a multi-tenant app server but still don't understand how to really done it, what is the right way to do it and what is actually required to do this task. So I've come to this questions, Do I need a proxy server, dns masking, etc.. How to monitor each tenants activity What about server performance, load balancing, and scalability How to setup ssl certificate for each tenant what about application cache for each tenant Is it reliable to use the setup for production etc ... I have a very litte experience on server infrastructure, so I'm looking for a DIY walkthrough, step by step guide, or sophisticate solution ready to implemented for production

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• Setting up a Network Bridge on Linux VM (Windows 7 Host)

  - by GrandAdmiral

  I would like to use NetEm to simulate a low bandwidth environment while testing an Internet-connected device. My plan is to setup a bridge in a Linux VM (Linux Mint 13) on a Windows 7 host. Unfortunately I'm having trouble setting up the bridge. Then I can use NetEm in the Linux VM to limit the bandwidth to an external device. I went with the following script: ifconfig eth0 0.0.0.0 promisc up ifconfig eth1 0.0.0.0 promisc up Then create the bridge and bring it up: brctl addbr br0 brctl setfd br0 0 brctl addif br0 eth0 brctl addif br0 eth1 dhclient br0 ifconfig br0 up When I run that script, I see the following warning: Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service smbd reload Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the reload(8) utility, e.g. reload smbd The device connecting to the bridge is able to obtain an IP Address, but it can only ping the IP Address of the bridge (both are 10.2.32.xx). Then after a few minutes, other parts of our network go down. I'm not sure why, but once I kill the bridge the network is fine. Is it possible to setup a network bridge in a Linux VM? Do I need to do something else with the dhclient br0 part of the script? By the way, I'm using VirtualBox. The wired connection is eth0 and the wireless connection is eth1. The wired connection is connecting to the device and the wireless connection is going to the network. Both adapters are set up as bridged adapters with promiscuous mode set to "allow all".

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• Win7 VM @ ESXi Server @ VMWorkstation (Win7) - ping works only from VM -> HostOS, not vice versa

  - by DK2000

  right now I'm toying around with VM Ware stuff and not having any pcs then my laptop I decided to run an ESXi Server inside of VWmware Workstation. I was just curios to see if the server would allow to setup and run a VM. And after some tweaking there it was, working like a charm. Okay not that fast but startin' the VM from vSphere and "opening a console" gave my direct access to that VM. Now I wanted to see if I could ping the host from the VM (VM Workstation Network is set to "host only"). And it worked, at least from the VM I could ping the ESXi server and the host. From the host I am able to ping the ESXi Server but I can't ping the VM! I asked myself anyway where the VM got its ip adress from. At the DCHPs IP there is at no machine after all. I even tried to use that DHCP adress for my Host and it didn't work out. You can see my settings from the screenshot here (it's pretty wide so just a link): http://yfrog.com/n4desktopfeop The only thing that got me thinking was when I once changed the ESXi's IP from 192.168.92.137 to 192.168.0.137. I still was able to connect to the ESXi server via its new IP but when I tried to run the VM console from vSphere I got an error after a while that said "couldnt connect to 192.168.92.137:903". So vSphere connects just through a port of the ESXi server to the VM?!? Could I setup a Linux VM to use it as a DHCP that I'd at least have control over the IPs that are given. Which lowest end linux could be used for this purpose?!? Thank you for your time! :)

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• Nginx > Varnish > Gunicorn Error Too many Redirections

  - by kollo

  I have the following config: Nginx Varnish Gunicorn Django I want to cache 2 versions of same site (mobile & web) with Varnish. Gunicorn : WEB: gunicorn_django --bind 127.0.0.1:8181 MOBILE: gunicorn_django --bind 127.0.0.1:8182 Nginx: WEB: server { listen 80; server_name www.mysite.com; location / { proxy_pass http://127.0.0.1:8282; # pass to Varnish proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } MOBILE: server { listen 80; server_name m.mysite.com; location / { proxy_pass http://127.0.0.1:8282; # pass to Varnish proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } Varnish: default.vcl backend mobile_mysite { .host = "127.0.0.1"; .port = "8182"; } backend mysite { .host = "127.0.0.1"; .port = "8181"; } sub vcl_recv { if (req.http.host ~ "(?i)^(m.)?mysite.com$") { set req.http.host = "m.mysite.com"; set req.backend = mobile_mysite; }elsif (req.http.host ~ "(?i)^(www.)?mysite.com$") { set req.http.host = "mysite.com"; set req.backend = mysite; } if (req.url ~ ".*/static") { /* do not cache static content */ return (pass); } } The problem: On Nginx if I setup Mobile version with Varnish (port 8282) and let WEB version with Gunicorn( port 8181), MOBILE is cached by varnish, both WEB & MOBILE works but WEB is not cached. If I set the proxy_pass of WEB version to Varnish (port 8282) and restart Nginx I got an error when accessing web version (www.mysite.com) "Too many redirections" . I Think my problem come from the Varnish config file, as the site works well if I setup Nginx proxy_pass to Gunicorn ports (MOBILE & WEB).

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• Private IP getting routed over Internet

  - by WernerCD

  We are setting up an internal program, on an internal server that uses the private 172.30.x.x subnet... when we ping the address 172.30.138.2, it routes across the internet: C:\>tracert 172.30.138.2 Tracing route to 172.30.138.2 over a maximum of 30 hops 1 6 ms 1 ms 1 ms xxxx.xxxxxxxxxxxxxxx.org [192.168.28.1] 2 * * * Request timed out. 3 12 ms 13 ms 9 ms xxxxxxxxxxx.xxxxxx.xx.xxx.xxxxxxx.net [68.85.xx.xx] 4 15 ms 11 ms 55 ms te-7-3-ar01.salisbury.md.bad.comcast.net [68.87.xx.xx] 5 13 ms 14 ms 18 ms xe-11-0-3-0-ar04.capitolhghts.md.bad.comcast.net [68.85.xx.xx] 6 19 ms 18 ms 14 ms te-1-0-0-4-cr01.denver.co.ibone.comcast.net [68.86.xx.xx] 7 28 ms 30 ms 30 ms pos-4-12-0-0-cr01.atlanta.ga.ibone.comcast.net [68.86.xx.xx] 8 30 ms 43 ms 30 ms 68.86.xx.xx 9 30 ms 29 ms 31 ms 172.30.138.2 Trace complete. This has a number of us confused. If we had a VPN setup, it wouldn't show up as being routed across the internet. If it hit an internet server, Private IP's (such as 192.168) shouldn't get routed. What would let a private IP address get routed across servers? would the fact that it's all comcast mean that they have their routers setup wrong?

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• EFS Remote Encryption

  - by Apoulet

  We have been trying to setup EFS across our domain. Unfortunately Reading/Writing file over network share does not work, we get an "Access Denied" error. Another worrying fact is that I managed to get it working for 1 machine but no other would work. The machines are all Windows 2008R2, running as VM under ESXi host. According to: http://technet.microsoft.com/en-us/library/bb457116.aspx#EHAA We setup the involved machine to be trusted for delegation The user are not restricted and can be trusted for delegation. The users have logged-in on both side and can read/write encrypted files without issues locally. I enabled Kerberos logging in the registry and this is the relevant logs that I get on the machine that has the encrypted files. In order for all certificate that the user possess (Only Key Name changes): Event ID 5058: Audit Success, "Other System Events" Key file operation. Subject: Security ID: {MyDOMAIN}\{MyID} Account Name: {MyID} Account Domain: {MyDOMAIN} Logon ID: 0xbXXXXXXX Cryptographic Parameters: Provider Name: Microsoft Software Key Storage Provider Algorithm Name: Not Available. Key Name: {CE885431-9B4F-47C2-8415-2D766B999999} Key Type: User key. Key File Operation Information: File Path: C:\Users\{MyID}\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-4585646465656-260371901-2912106767-1207\66099999999991e891f187e791277da03d_dfe9ecd8-31c4-4b0f-9b57-6fd3cab90760 Operation: Read persisted key from file. Return Code: 0x0[/code] Event ID 5061: Audit Faillure, "System Intergrity" [code]Cryptographic operation. Subject: Security ID: {MyDOMAIN}\{MyID} Account Name: {MyID} Account Domain: {MyDOMAIN} Logon ID: 0xbXXXXXXX Cryptographic Parameters: Provider Name: Microsoft Software Key Storage Provider Algorithm Name: RSA Key Name: {CE885431-9B4F-47C2-8415-2D766B999999} Key Type: User key. Cryptographic Operation: Operation: Open Key. Return Code: 0x8009000b Could this be related to this error from the CryptAcquireContext function NTE_BAD_KEY_STATE 0x8009000BL The user password has changed since the private keys were encrypted. The problem is that the users I using at the moment can not change their password.

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• Can't write to samba share

  - by Tiddo

  I try to setup a samba file server, but whatever I do I can't get write access to work (reading works fine). This is my current situation: I have a local fileserver with 3 harddisks mounted at /mnt/share/disk<nr>. 2 of these use the ext4 filesystem, the third one is ntfs. This file server runs Fedora 18 32-bit. The root folders of these harddisks are owned by superman:superman, and testparm outputs the following: [global] workgroup = WORKGROUP netbios name = FILE_SERVER server string = Samba Server Version %v interfaces = lo, eth0, 192.168.123.191/8 log file = /var/log/samba/log.%m max log size = 50 unix extensions = No load printers = No idmap config * : backend = tdb hosts allow = 192.168.123. cups options = raw wide links = Yes [share] comment = Home Directories path = /home/share/ write list = superman, @users force user = superman read only = No create mask = 0777 directory mask = 0777 inherit permissions = Yes guest ok = Yes I've tried a lot to get this to work: the disk are chmodded to 777, I've tried turning off selinux, I've added the samba_share_t label to the disks and as can be seen in the above output I tried to make the smb config as permissive as I could, but still I cannot write to the share (tried from Windows 7 and another Fedora installation). What can I try to be able to write to the shares? EDIT: The replies I got so far are mostly concerned with the smb.conf. I have however tried a lot of different setup, ready made configs, and solutions to similar problems for the smb.conf file, so I suspect that the real problem is somewhere else.

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• 553-Message filtered - HELO Name issue?

  - by g18c

  I am having major issues sending from my SBS2011 machine to Message labs server-13.tower-134.messagelabs.com #553-Message filtered. Refer to the Troubleshooting page at 553-http://www.symanteccloud.com/troubleshooting for more 553 information. (#5.7.1) ## I have changed the IP and hostnames from the below. I am not on any IP or domain blacklists. I have setup SPF (which includes mailchimp servers): v=spf1 mx a ip4:95.74.157.22/32 a:remote.mydomain.com include:servers.mcsv.net ~all I am sure i have setup my HELO names correctly under the Exchange Management console, sending a test email from the SBS server and looking at the header shows the following: X-Orig-To: [email protected] X-Originating-Ip: [95.74.157.22] Received: from [95.74.157.22] ([95.74.157.22:52194] helo=remote.mydomain.com) by smtp50.gate.ord1a.rsapps.net (envelope-from <[email protected]>) (ecelerity 2.2.3.49 r(42060/42061)) with ESMTP id 11/90-10010-E529C835; Mon, 02 Jun 2014 11:04:09 -0400 Received: from MYSBSSVR.mydomain.local ([fe80::3159:95a6:23f:1bef]) by MYSBSSVR.mydomain.local ([fe80::3159:95a6:23f:1bef%10]) with mapi id 14.01.0438.000; Mon, 2 Jun 2014 19:03:56 +0400 Is is the main helo name there OK and do i need to worry about the second Received block where the MYSBSVR.mydomain.local is mentioned? I have asked the ISP to set the reverse DNS for my IP to remote.mydomain.com but they have instead put remote.MYDOMAIN.com - would this case cause HELO lookups to classify this as not matching? Anything else I can do to find out why i am being filtered?

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• Terminal Server 2008 Login: Access Denied

  - by user1236435

  When I try to RDP into a Server 2008 Terminal Server, I get a message that says "Access Denied" and an OK button. I setup the licensing mode correctly (per user) and also have setup to allow all remote connections. I get the following in the security event log: Log Name: Security Source: Microsoft-Windows-Security-Auditing Date: 28/06/2012 12:01:16 Event ID: 4656 Task Category: File System Level: Information Keywords: Audit Failure User: N/A Computer: 0BraApps1.brenntagLA.hou Description: A handle to an object was requested. Subject: Security ID: BRENNTAGLA\jaadmin Account Name: jaadmin Account Domain: BRENNTAGLA Logon ID: 0xbbe3f Object: Object Server: Security Object Type: File Object Name: C:\Windows\System32\ServerManager.msc Handle ID: 0x0 Process Information: Process ID: 0x60c Process Name: C:\Windows\System32\mmc.exe Access Request Information: Transaction ID: {00000000-0000-0000-0000-000000000000} Accesses: READ_CONTROL SYNCHRONIZE WriteData (or AddFile) AppendData (or AddSubdirectory or CreatePipeInstance) WriteEA ReadAttributes WriteAttributes Access Reasons: READ_CONTROL: Granted by D:(A;;0x1200a9;;;BA) SYNCHRONIZE: Granted by D:(A;;0x1200a9;;;BA) WriteData (or AddFile): Not granted AppendData (or AddSubdirectory or CreatePipeInstance): Not granted WriteEA: Not granted ReadAttributes: Granted by ACE on parent folder D:(A;;0x1301bf;;;BA) WriteAttributes: Not granted Access Mask: 0x120196 Privileges Used for Access Check: - Restricted SID Count: 0 Event Xml: 4656 1 0 12800 0 0x8010000000000000 1535565 Security 0BraApps1.brenntagLA.hou S-1-5-21-205301047-3902605089-2438454170-21511219 jaadmin BRENNTAGLA 0xbbe3f Security File C:\Windows\System32\ServerManager.msc 0x0 {00000000-0000-0000-0000-000000000000} %%1538 %%1541 %%4417 %%4418 %%4420 %%4423 %%4424 %%1538: %%1801 D:(A;;0x1200a9;;;BA) %%1541: %%1801 D:(A;;0x1200a9;;;BA) %%4417: %%1805 %%4418: %%1805 %%4420: %%1805 %%4423: %%1811 D:(A;;0x1301bf;;;BA) %%4424: %%1805 0x120196 - 0 0x60c C:\Windows\System32\mmc.exe Any ideas?

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• Is there any way to synchronize Outlook RSS Feeds with BlackBerry?

  - by nvuono

  Does anyone know how I can view the contents of my Outlook 2007 RSS Feeds from a corporate-issued BlackBerry? Our Inbox and Calendar are already integrated with corporate exchange servers but it looks like nobody cares too much about the RSS Feeds. Is there some setting on my Blackberry or in Outlook I could possibly tweak to include these updates? I know there are many standalone RSS readers available for blackberry (Google Reader for example) but I mention Outlook RSS Feeds specifically in my question because I am subscribing to a number of RSS feeds I've setup on my intranet for various version control systems that would be inaccessible to an external RSS reader. It seems like I might have to setup some sort of email commit notifications if I want anything from my blackberry but I much prefer the 'pull' method of an RSS feed viewer over receiving streams of emails. Please feel free to suggest any alternatives! Edit: I've additionally tried moving my "SVN Repository" folder directly into my Mailbox instead of keeping it as a child of the RSS Feeds folder. This allows me to view the SVN Repository folder on my blackberry where previously the RSS Feeds folder and all children were hidden but unfortunately it never seems to get populated with the items that are displaying in Outlook. I've even made a fresh commit to make sure that the SVN Repository folder still works correctly in Outlook from outside the RSS Feeds folder but no luck on the BlackBerry end of things. BlackBerry Model Details: BlackBerry 8310 smartphone (EDGE) v4.2.2.170 Platform 2.5.0.30

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