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• VLAN support on Juniper EX - 2200 switches

  - by liv2hak

  I have 6 Juniper switches (EX - 2200) connected to each other as shown in the network topology below. I have two PC's that I am using PC1 - (used for configuring the 6 switches via minicom) PC2 - to monitor the traffic between the switches via the Ports that are marked with arrows in the diagram. STEP 1: I create a new vlan On Switch 3 (SW3) that includes Port 12 and Port 22. I also assign l3-interface to the vlan (vlan_2) with ip address - 192.168.1.7. Now I plug-in Port 0 of Switch 3 on PC2. Now I try pinging 192.168.1.7 from PC2 (192.168.1.10) I want to know what will happen? My postulation is that I will not be able to ping SW3 from PC2.This is because SW3 (Port 12 and Port 22) is a part of a vlan_2 and vlan_2 logically breaks up broadcast domains and so 192.168.1.7 will not be reachable from 192.168.1.10. Now I have an l3-interface on SW1 with IP 192.168.1.1 using default vlan( vlan-id 0). Similarly I have enabled IP on SW2 - 192.168.1.2 SW3 - 192.168.1.3 SW4 - 192.168.1.4 SW5 - 192.168.1.5 SW6 - 192.168.1.6 all using default vlan. Now I plug in Port 12 of SW3 (blue cable) into the PC2. I try to ping 192.168.1.1 from PC2. What will happen at this stage.? My postulation is that I will be able to ping switch 1.Is this correct? Also another question is that can a single port on a Switch be added multiple VLANS? I am a beginner at network configuration? Any help would be highly appreciated. (Please ignore the CISCO symbol on the switches in the diagram.All swithes are Junper EX 22-00.)

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• SSH Tunnel for Remote Desktop via Intermediary Server Part II

  - by Mihai Todor

  I asked previously how to configure 2 SSH tunnels using an intermediary server in order to run Remote Desktop through them and I managed to make it work. Now, I'm trying to do the same, using the same machines, but in reverse order. Here's the setup: Windows 7 PC in a private network, sitting behind a firewall. Public access Linux server, which has access to the PC. Windows 7 laptop, at home, on which I wish to do Remote Desktop from the PC. I use Putty on the laptop to create a reverse tunnel from it to the Linux server: R60666 localhost:3389. I use Putty on the PC to create a regular tunnel from it to the Linux server: L60666 localhost:60666. I SSH to the Linux sever and I run telnet localhost 60666 and it seems to produce the expected output, as described in the debugging tips that I received here. I try to connect Remote Desktop from the PC to the laptop: localhost:60666. It asks for my username and password, I click OK and it locks my current session on the laptop (so I see the welcome screen on the laptop instead of my desktop), it shows the "Welcome" message in the Remote Desktop screen and then it just goes black. It doesn't disconnect, it doesn't provide any error and I'm not able to perform any actions in the Remote Desktop screen. I tried the same setup with a Windows XP laptop and I'm experiencing the same symptoms. I also tried to use different ports than 60666, but nothing changed. Does anybody have any idea what I'm doing wrong? Update: As pointed out by @jwinders, I'm not able to run telnet PC 3389 from the Linux server directly. Since Windows Firewall has a rule to allow all connections on port 3389, I have no idea what is blocking it. Fortunately, I'm able to create a SSH tunnel from the Linux machine to the PC ssh 3389:localhost:3389 'domain\user'@PC.

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• Nginx dynamic upstream configuration / routing

  - by Dan Sosedoff

  I was experimenting with dynamic upstream configuration for nginx and cant find any good solution to implement upstream configuration from third-party source like redis or mysql. The idea behind it is to have a single file configuration in primary server and proxy requests to various app servers based on environment conditions. Think of dynamic deployments where you have X servers that are running Y workers on different ports. For instance, i create a new app and deploy. App manager selects a server and then rolls out a worker (Ruby/PHP/Python) and then reports the ip:port to the central database with status "up". At this time when i go to the given url nginx should proxy all requests to the specified ip:port upstream. The whole thing is pretty similar to what heroku does, except this proof-of-concept is not supposed to be production ready, mostly for internal needs. The easiest solution i found was using resolver with ruby-based DNS server. It works, nginx gets the IP address correctly, but the only problem is that you cant define port number for that IP. Second solution (which i havent tried yet) is to roll something else as a proxy server, maybe written in Erlang. In this case we need to use something to serve static content. Any ideas how to implement this in more flexible and stable way? P.S. Some research options: http://openresty.org/#DynamicRoutingBasedOnRedis https://github.com/nodejitsu/node-http-proxy

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• PXE with WDS & Windows Server 2012 - no filename option in DHCP lease?

  - by user1799

  I'm trying to configure Windows Server 2012 (a virtual box VM) with WDS so I can PXE boot some Windows 7 VMs (also virtual box). All the machines involved are only attached to the "host only network", 192.168.56.0/24. The Server 2012 machine has been setup as an AD DS machine, has DNS installed and working along with DHCP with option 60 - PXEClient - set and WDS is set to not listen on DHCP ports. I've followed http://technet.microsoft.com/en-us/library/jj648426.aspx very closely. I've used the boot.wim and install.wim files from the Win 7 installation DVD and they're configured as 'boot' and 'installation' images respectively. When I boot the target machine, it gets an IP address, but I simply get 'no filename' and the boot won't proceed any further. I've tried setting option 66 to 192.168.56.2 (the WDS server) and option 67 to both Boot\x64\wdsnbp.com and Boot\x64\pxeboot.n12 but all to no avail. I can't seem to see anything in the event log, either. Can anyone out there spot what I'm doing wrong? Or give tips to narrow down a diagnostic?

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• Address (url) forwarding with Vyatta

  - by Trikks

  Hi Got this kind of noob question i suppose. I got this very basic network setup and need help to set up some address forwarding. As seen in my illustration below all traffic enters via the eth0 interface (85.123.32.23). The external dns is setup to direct all hosts to this ip as well. Now, how on earth do I filter the incoming requests to each box? The Ip's are static! Se the network layout here: http://vyatta.org/files/u11160/setup.png I do not wish to solve this by assigning tons of ports etc. In my wishful thinking something like this would be nice :) set service nat rule 10 type destination set service nat rule 10 inbound-interface eth0 set service nat rule 10 destination address ftp.myhost.com set service nat rule 10 inside-address address 192.168.100.20 This way ALL traffic to the address ftp.myhost.com (at eth0) should be routed to the internal ip, 192.168.100.20. Right, is there anyone who could point in some direction? Maybe it's wrong to use nat? Please help me! :)

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• Nginx + uWSGI on a fresh Ubuntu install - bind error port 80

  - by knuckfubuck

  I know this is a common problem usually having to do with apache or another service already running on port 80 and I have done a lot of searching and running netstat and still have not figured out why I am getting this error. I rebuilt my slice, did a fresh install of Ubuntu 10.04 and setup nginx + uwsgi. It worked and I was able to see my Django site. I then installed Postgres8.4 and the rest of the stack needed for Geodjango from this link. After that was done I tried to restart nginx and I get this error: sudo /etc/init.d/nginx start Starting nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok configuration file /usr/local/nginx/conf/nginx.conf test is successful [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use) [emerg]: still could not bind() I have nginx set to listen 80. Here's an output from netstat -l --numeric-ports | grep 80: tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:8000 0.0.0.0:* LISTEN Output from sudo lsof +M -i4: nginx 2330 root 8u IPv4 3195 0t0 TCP *:www (LISTEN) nginx 2331 www-data 8u IPv4 3195 0t0 TCP *:www (LISTEN) uwsgi 2335 s 4u IPv4 3259 0t0 TCP localhost:8000 (LISTEN) uwsgi 2352 s 4u IPv4 3259 0t0 TCP localhost:8000 (LISTEN) uwsgi 2353 s 4u IPv4 3259 0t0 TCP localhost:8000 (LISTEN) uwsgi 2354 s 4u IPv4 3259 0t0 TCP localhost:8000 (LISTEN) uwsgi 2355 s 4u IPv4 3259 0t0 TCP localhost:8000 (LISTEN) Anyone have any other ideas how I can figure out what is blocking port 80? edit Paste of my /etc/init.d/nginx script here: http://dpaste.com/hold/400937/

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• Address (url) forwarding with Vyatta

  - by Trikks

  Got this kind of noob question i suppose. I got this very basic network setup and need help to set up some address forwarding. As seen in my illustration below all traffic enters via the eth0 interface (85.123.32.23). The external dns is setup to direct all hosts to this ip as well. Now, how on earth do I filter the incoming requests to each box? The Ip's are static! My network layout: I do not wish to solve this by assigning tons of ports etc. In my wishful thinking something like this would be nice :) set service nat rule 10 type destination set service nat rule 10 inbound-interface eth0 set service nat rule 10 destination address ftp.myhost.com set service nat rule 10 inside-address address 192.168.100.20 This way ALL traffic to the address ftp.myhost.com (at eth0) should be routed to the internal ip, 192.168.100.20. Right, is there anyone who could point in some direction? Maybe it's wrong to use nat? Please help me! :)

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• Error 720 on VPN (PPTP) attempt

  - by Andy Shulman

  When I attempt to connect to a server running XP x64 (so essentially Server 2003) using a PPTP connection, it fails with client-side error Registering your computer on the network... Error 720: A connection to the remote computer could not be established. You might need to change the network settings for this configuration. and server-side error Event ID: 20050 The user WINSERV3\Andy connected to port VPN8-1 has been disconnected because no network protocols were successfully negotiated. I have configured the router to pass both TCP packets on 1723 and GRE packets. I have used Wireshark (filtering out ARP, UDP, and all TCP ports other than 1723) to observe the packets received by the server. Wireshark does not explicitly name any protocol GRE, but it does tell me the server sent and received TCP, PPTP, PPP LCP, PPP CHAP, PPP CBCP, and PPP IPCP. The connection seems to go wrong at packet 30, where the protocol is PPP LCP, with the payload of the packet being labeled "Protocol Reject". Obviously, this is going from server to client. This would seem to lead to the conclusion that there is something wrong with my client, which runs Windows 7 Ultimate x64. However, it is able to connect to my house's router, which runs the DD-WRT firmware and is thus a PPTP endpoint. I'm thoroughly at a loss. Please help!

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• Apache2 config problem

  - by Hellnar

  For using my Debian VPS for multiple domains , I did such actions: removed the default one from sites-enabled/ and sites-available/ (config and the symbolic link) and I added this under sites-available/www.mysite.com : <VirtualHost MYIP:80> ServerName mysite.com ServerAlias www.mysite.com Alias /media/ /home/myuser/mysite/media/ Alias /admin_media/ /home/myuser/django/Django-1.2/django/contrib/admin/media/ WSGIScriptAlias / /home/myuser/mysite/wsgi.py ErrorLog /home/myuser/mysite/logs/error.log CustomLog /home/myuser/mysite/logs/access.log combined </VirtualHost> And I have changed my ports.conf to: NameVirtualHost MYIP:80 Listen 80 <IfModule mod_ssl.c> # SSL name based virtual hosts are not yet supported, therefore no # NameVirtualHost statement here Listen 443 </IfModule> Lastly I enabled the new domain via the command: a2ensite www.mysite.com After restart I get this error: myuser:~# /etc/init.d/apache2 restart Restarting web server: apache2apache2: Syntax error on line 281 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/sites-enabled/www.birertek.com: /etc/apache2/sites-enabled/www.birertek.com:1: <VirtualHost> was not closed. failed! Please help this poor soul.

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• IIS URL Rewrite HTTP to HTTPS with Port

  - by Andy Arismendi

  My website has two bindings: 1000 and 1443 (port 80/443 are in use by another website on the same IIS instance). Port 1000 is HTTP, port 1443 is HTTPS. What I want to do is redirect any incoming request using "htt p://server:1000" to "htt ps://server:1443". I'm playing around with IIS 7 rewrite module 2.0 but I'm banging my head against the wall. Any insight is appreciated! BTW the rewrite configuration below works great with a site that has an HTTP binding on port 80 and HTTPS binding on port 443, but it doesn't work with my ports. P.S. My URLs intentionally have spaces because the 'spam prevention mechanism' kicked in. For some reason google login doesn't work anymore so I had to create an OpenID account (No Script could be the culprit). I'm not sure how to get XML to display nicely so I added spaces after the opening brackets. < ?xml version="1.0" encoding="utf-8"? < configuration < system.webServer < rewrite < rules < rule name="HTTP to HTTPS redirect" stopProcessing="true" < match url="(.*)" / < conditions trackAllCaptures="true" < add input="{HTTPS}" pattern="off" / < /conditions < action type="Redirect" redirectType="Found" url="htt ps: // {HTTP_HOST}/{R:1}" / < /rule < /rules < /rewrite < /system.webServer < /configuration

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• Getting 400 Bad Request when requesting by server name on nginx/uwsgi

  - by Marc Hughes

  I'm trying to run 2 different sites on nginx via different ports (they each have a load balancer that points to the appropriate port). The first site work perfectly. The second site... If I access http://localhost:81/ it works correctly If I access http://127.0.01:81/ it works correctly If I access the hostname http://THEHOSTNAME:81/ it fails with a 400 error If I access the public IP http://x.x.x.x:81/ it fails with a 400 error I've set the error_log to info, but the only lines I get in the log when this happens is: ==> /var/log/nginx/access.log <== 10.183.38.141 - - [24/Aug/2014:21:03:28 +0000] "GET / HTTP/1.1" 400 37 "-" "curl/7.36.0" "-" ==> /var/log/nginx/error.log <== 2014/08/24 21:03:28 [info] 7029#0: *5 client 10.183.38.141 closed keepalive connection In my uwsgi log, I only see this: [pid: 6870|app: 0|req: 87/92] 10.28.23.224 () {32 vars in 380 bytes} [Sun Aug 24 21:05:21 2014] GET / => generated 26 bytes in 1 msecs (HTTP/1.1 400) 2 headers in 82 bytes (1 switches on core 2) What should be my next step in debugging this?

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• How can I filter /var/adm/wtmpx on Solaris 10?

  - by Yanick Girouard

  Some of our Solaris 10 servers are monitored using SiteScope, which uses Telnet to probe certain ports (SSH is one of them) every few minutes. This is creating an insane amount of lines in /var/adm/wtmpx, and eventually make it so big (2,5G+) that we can no longer run the last command, or that the uptime command is unable to accurately show the true uptime of the server. The error we get when trying to run the last command is this: /var/adm/wtmpx: Value too large for defined data type I have found ways we can clean this accounting log using a cron job (with the command /usr/lib/acct/fwtmp), and this works. This is not the issue. I was wondering if there would be a way to simply prevent connections from the monitoring user (in our case, user monsite) from creating entries in this accounting log at all. Is this possible, and if so, how can I do it? I've looked around and searched Google for a while, but couldn't find an answer to this question. NOTE: We are very well aware that the monitoring solution we employ is perhaps not the best one, but we cannot change it at this time. Therefore, suggesting that we change it is not pertinent to this question. If you want to read more on the Sitescope monitoring solution we employ for those servers, please see its documentation here and look for Port Monitor, and Connecting to remote UNIX servers, which explains how it works.

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• HP ProCurve & Cisco switches interoperability

  - by Kamil Z

  I have a couple of questions regarding Cisco and HP ProCurve interoperability. Here's a link to pdf with my network topology. Can someone help me with basic VLAN configuration in such topology? Below there are some details of my configuration: # m_management_2 interface FastEthernet0/43 switchport access vlan 250 switchport mode access spanning-tree port-priority 32 spanning-tree cost 100 # MTA2-swmgmt1 vlan 1 name "DEFAULT_VLAN" untagged 1-48 ip address 10.10.249.190 255.255.255.128 exit # MTA2-swtr1 vlan 1 name "DEFAULT_VLAN" untagged 1-14,16-48 no ip address no untagged 15 exit vlan 100 name "MTA Mgmt" untagged 15 ip address 10.10.249.188 255.255.255.128 exit # MTA2-swtr2 vlan 1 name "DEFAULT_VLAN" untagged 1-14,16-48 no ip address no untagged 15 exit vlan 100 name "MTA Mgmt" untagged 15 ip address 10.10.249.189 255.255.255.128 exit I don't post MTA2-bcsw[12] configuration, because I wasn's successfull in this one yet. Every time I configure VLANs on MTA2-bcsw[12] Fa0/24 interface on m_management_2 goes down bacause of receiving tagged BPDUs on access port (there are no VLANs configured on MTA2-swmgmt1 because of fact that only 250 VLAN is allowed in this switch. Is it correct?). Can someone provide me some basic configuration for this topology? Second thing I want to ask is concept of connection from MTA2-swmgmt1 to MTA2-swtr[12] HP switches for the sake of management. How to configure such ports on HP switches (managed switch and manager switch). Is my actual configuration correct?

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• Outbound HTTP performance tuning recommendations

  - by Richard Gadsden

  I'll detail my exact setup below, but general recommendations for a better web-browsing experience will be useful. A nice checklist of things to try would be great! I have 600 users on a single site with an 8MB leased line. I get a lot of moans about the performance of "the internet" (ie web-browsing). What recommendations do the community have for speeding things up without just throwing more bandwidth at it? I expect I will end up buying some more, but good management tips are always valuable. My setup is this: Cisco PIX (515E) firewall on the edge of the network. It's just doing some basic NAT, and opening up a handful of ports to various bastion hosts (aka DMZ servers). The DMZ is just a switch that the servers are plugged into. ISA 2006 Enterprise array (two servers) connecting DMZ to the internal LAN, with WebSense Web Security filtering HTTP traffic so users can't look at porn or waste bandwidth on YouTube during working hours. I've done a few things - I've just switched my internal DNS over to use root hints, which halved DNS query latency from 500ms to 250ms. Well worth doing. I'm trying to cache more aggressively, but so much more of the internet is AJAXy and doesn't cache very well as compared to five years ago. Plus the 70GB of cache which felt like a lot a few years ago really isn't any more. I'm getting about 45% cache hits by number of requests, but only about 22% by size, ie larger objects are less likely to be cached. Latency seems to be part of the problem. Is that attributable to the bandwidth problem, or are there things I can look at to try to reduce latency even on heavily-loaded bandwidth?

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• TomTom GO & Ubuntu Linux: impersonating a GPRS phone with dund

  - by Broam

  Background: I've called TomTom support, and they don't support Linux. I can get my GO 730 to mount Mass Storage, and I found a shell script that will allow me to install maps (haven't tried it; will update when I do.). As of note: USB 2.0 only. 1.1 ports will not work. However--I still can't update the TomTom or take advantage of any traffic services. The GO will connect to a mobile phone, but I don't have one that supports tethering. However, I've found a site that claims to know a way to get a Linux Machine to impersonate a phone advertising GPRS services and it apparently works in Fedora as old as FC4. I'm having some serious trouble getting this to work on Ubuntu 9.10 Karmic, mainly because I think some of the built-in bluetooth stuff is getting in the way. Changing the class bits in main.conf (hcid.conf does not exist) doesn't crash..., and dund starts and listens, but the TomTom device never seems to want to connect to my machine. I haven't played around much with sdcptool (I think that's the name, not in front of a Linux machine right now) but maybe I have to advertise the DUN profile...I'm not very sure. My Question: I have no way to diagnose the problems. What are some diagnostic tools I can use to help dig down and figure out what's going on? Update: apparently dund is a legacy tool that's going away. What replaces it?

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• Virtual Win XP Mode stopped HP LJ Pro M1212nf MFP printing in Win 7 Pro

  - by Dee

  Virtual Win XP Mode stopped HP LJ Pro M1212nf MFP printing in Win 7 Pro: I am running Windows 7 Pro with Virtual Windows XP Mode. My printer is HP LaserJet Pro M1212nf MFP attached directly to a USB port of the computer. This printer was working fine in Windows 7, until I tried to attach the printer to the Virtual Windows XP Mode in order to load the printer driver in the Virtual Windows XP Mode. At that point, the printer disappeared from the list of USB devices on the toolbar at the top of the window of the Virtual Windows XP Mode. After installing the printer driver in the Virtual Windows XP Mode, the printer did not work in that mode and also no longer worked in Windows 7. In Windows 7 and in the Virtual Windows XP Mode, print files are sent to the print queue, but are never printed. In Windows 7, the print queue states that the printer is offline. In the Virtual Windows XP Mode, the printer can be toggled from "Print Offline" to "Print Online", but no print files are ever printed from the print queue. The printer acts as though it is no longer connected to the computer, even though it is still physically connected to the USB port of the computer. How can I get the printer to work again in Windows 7? (At this point, I am no longer interested in using the Virtual Windows XP Mode.) I have tried a large number of things to find and fix the printer problem, but have had no success. Device Manager cannot see the printer even though it is physically connected via USB port (have tried different USB ports) to the computer. Restoring Win 7 and Virtual Win XP Mode to times before the problem does not fix the problem. How can I get the computer to see the printer, so that I can print again in Win 7?

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• Windows XP SP3 Keyboard stops working

  - by Kevin K

  Here's the strangest thing I have yet to see in 20+ yrs of computer repairs. My in-laws Windowsx XP SP3 has stopped recognizing keyboards. The keyboards work fine in the BIOS, during the boot select process to boot normally, etc. but once Windows comes up it will not recognize any USB keyboard. The USB mouse works fine, have tried different USB ports, different keyboards, etc. nothing works. I can log into the machine via VNC and use the remote keyboard just fine, but not connected locally. Tried a system restore, it says nothing changed. I am about to just re-install Windows at this point, except I am afraid it will happen again. I have googled for this and it is not unheard of, but I have not found any solution other than nuking it. Anyone have any ideas? I have re-installed the USB drivers for the M/B. Gone into devices and deleted them for a re-install, etc. Keyboard works off a Linux live boot CD, and in the BIOS setup so it is not a hardware issue, and I have tried a few keyboards all of which I know are good and work fine on other systems.

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• Port forwarding + shared connection with Ubuntu

  - by Joey Adams

  Because my wireless router's ethernet ports are defective, I set up a shared wireless connection from my laptop (which has wifi) to my eMac (which does not) via a crossover ethernet cable. The laptop is behind a router as 192.168.1.131, and the eMac is behind the laptop as 10.42.43.1 . The laptop is running Ubuntu 9.10 (Karmic). I achieved the shared connection through NetworkManager Applet. I right-clicked on the network icon at the topright, went to Edit Connections, selected the Wired connection named "Auto eth0", clicked "Edit...", went to the "IPv4 Settings" tab, and selected the Method "Shared to other computers". The eMac can now access the Internet. Now I want to enable port forwarding. There's a game I want to play that needs port 6112 forwarded (both TCP and UDP) in order to host games. I set up the router to enable port forwarding for 192.168.1.131 (the laptop), but port forwarding still isn't available on the eMac. I suppose I need to pretend my laptop is a router and configure port forwarding on it, indicating that incoming connections to the laptop (192.168.1.131) should be forwarded to the eMac on the shared connection (10.42.43.1 ). Thus, packets coming into the router on port 6112 would be redirected to the laptop (by the router), then to the eMac (by the laptop). My question is, how would I do that on Ubuntu (in light of NetworkManager's presence)? Also, if I can't get this to work, does anyone mind hosting a comp stomp? :D

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• MySQL socket connections working, but not port connections

  - by Neil

  I installed MySQL community 5.1.45 on my Snow Leopard 10.6, using the pkg from their site. I had previously installed a MySQL binary from entropy.ch. In the previous installation, the connections were working fine before I upgrade to Snow Leopard. In Snow Leopard, both the installations are problematic. Using an app called Sequel Pro, if I connect with the socket operation, it connects properly. However, a standard connection with the same credentials doesn't work. From what I've understood, socket connections happen on the machine itself between processes, whereas normal connections occur over the network/ports, in this case a loopback to my machine, since the server and client are both on the same machine. My new CakePHP installation isn't being able to connect to the db with the root credentials I provided. Btw, I've been starting the MySQL server using the Preference Pane. When I tried running mysqld from terminal, it gave me: 100323 1:54:37 [Warning] Can't create test file /usr/local/mysql-5.1.45-osx10.6-x86_64/data/mbp.lower-test 100323 1:54:37 [Warning] Can't create test file /usr/local/mysql-5.1.45-osx10.6-x86_64/data/mbp.lower-test mysqld: Can't change dir to '/usr/local/mysql-5.1.45-osx10.6-x86_64/data/' (Errcode: 13) 100323 1:54:37 [ERROR] Aborting 100323 1:54:37 [Note] mysqld: Shutdown complete mbp is the name of my machine. How do I fix this so that my webserver can connect to the mysql server?

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• Traffic Shaping using tc

  - by Simon

  Hi guys, I have a 1.5 Mbit/s link that i want to share with 150 users. My setup is the following: Linux box with 3 NICs eth0 - public ip eth1 - subnet A - 50 users (static ips) eth2 - subnet B - 100 users (via dhcp) I am using squid as a transparent proxy on port 3128. dhcp server using ports 67 and 68. I was creating, but I think packets are not going to the right queues #!/bin/bash DEV=eth0 RATE_MAIN=2048kbit CEIL_MAIN=2048kbit BURST=1b CBURST=1b RATE_DEFAULT=1024kbit CEIL_DEFAULT=$CEIL_MAIN PRIO_DEFAULT=3 RATE_P2P=1024Kbit CEIL_P2P=$CEIL_MAIN PRIO_P2P=4 RATE_IND=32kbit CEIL_IND=$CEIL_DEFAULT tc qdisc del dev $DEV root tc qdisc add dev $DEV root handle 1: htb default 30 tc class add dev $DEV parent 1: classid 1:1 htb rate $RATE_MAIN ceil $CEIL_MAIN tc class add dev $DEV parent 1:1 classid 1:10 htb rate $RATE_DEFAULT ceil $CEIL_MAIN burst $BURST cburst $CBURST prio $PRIO_WEB ## some other sub class for p2p other traffic tc class add dev $DEV parent 1:1 classid 1:20 htb rate $RATE_P2P ceil $CEIL_P2P burst $BURST cburst $CBURST prio $PRIO_P2P $IPS_NET1=50 $IPS_NET2=100 let $IPS=$IPS_NET1+$IPS_NET2 for ((i=1; i<= $IPS; i++)) do let CLASSID=($i+100) let HANDLE=($i+100) tc class add dev $DEV parent 1:10 classid 1:$CLASSID htb rate $RATE_IND ceil $CEIL_IND tc qdisc add dev $DEV parent 1:$CLASSID handle $HANDLE: sfq perturb 10 done ## Generate IP addresses ## IP_ADDRESSES="" # Subnet A BASE_IP=10.10.10. for ((i=2; i<=$IPS_NET1+1; i++)) do TEMP="$BASE_IP$i" IP=ADDRESSES="$IP_ADDRESSES $TEMP" done # Subnet B BASE_IP=192.168.0. for ((i=2; i<=$IPS_NET2+1; i++)) do TEMP="$BASE_IP$i" IP_ADDRESSES="$IP_ADDRESSES $TEMP" done ## FILTERS ## j=1 U32="tc filter add dev $DEV protocol ip parent 1:0 prio $PRIO_DEFAULT u32" for NET in $IP_ADDRESSES; do let CLASSID=($j+100) $U32_DEFAULT match ip src $NET/32 flowid 1:$CLASSID $U32_DEFAULT match ip dst $NET/32 flowid 1:$CLASSID let j=j+1 done Can you guys help me figure out what's wrong with it? basically I want my classes to be 1:1 (1.5 Mbit ) 1:10 (1024 Kbit) 1:20 (1024 Kbit) (200 ips each with 32 kbit)

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• QT Creator 64-bit Snow Leopard

  - by quadelirus

  I have a bunch of libraries that I need to link against that I installed via macports. They are 64-bit libraries. I'm working on an application written with QT Creator and the .pro is set up. I downloaded the QT SDK for Mac OS X, but it is 32-bit and so the compiled code won't link against the 64-bit binaries that I got from macports. Ok. So I downloaded the QT SDK source and built from source using -arch x86_64. Now I have a 64-bit version of the SDK (I think) but it didn't build a QT Creator app. So. I need to know one of 4 things: Either, 1.) I'm guessing that a simple make command will convince the QT SDK to build the creator for me. If this is true, then what is the command (make creator?). barring that, I need to know 2.) The easiest way to get MacPorts to redownload the libraries that I installed with a 32-bit version (I keep seeing a "+universal" mentioned, but I haven't seen it on a line, and simply calling ports +universal install XYZ doesn't seem to work--perhaps I need to uninstall and reinstall the package?). Also, is this a stupid idea? or 3.) Someone who actually has a prebuilt 64-bit QT SDK installer so I don't have to mess with this. It is ridiculous that QT doesn't already have this available, in my opinion--SL has been out since, what, last August? 4--and this would take the cake.) I don't understand why I can't simply put a "compile-for-64-bit stupid" command directly into the QT pro file and have it build. There isn't really a reason why a compiler compiled in 32-bits couldn't compile to 64-bits is there? Thanks.

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• NVidia ION and /dev/mapper/nvidia_... issues.

  - by Ritsaert Hornstra

  I have an NVidia ION board with 4 SATA ports and want to use that to run a Linux Server (CentOS 5.4). I first hooed up 3 HDs (that will be a RAID5 array) and a forth small boot HD. I first started to use the onboard RAID capability but that does not work correctly under Linux: the raid capacity is not a real RAID but uses lvm to define some arays. After setting the BIOS back to normal SATA mode and whiping the HDs, the first boot harddisk (/dev/sda) is seen as /dev/sda BEFORE mounting and after mounting as /dev/mapper/nvidia_. CentOS is unable to install on it (and grub is not installable on it either). So somehow the harddisk is still seen as if it belongs to some lvm volume. I tried to clean out the HD by issuing a few dd if=/dev/zero of=/dev/sda commands to wipe the starting cylinders and final cylinders but to no avail. Did anyone see this problem and did anyone find a solution? UPDATE When I create only a single ext3 partition on the first HD (/dev/mapper/nvidia_...) no LVM partitions are seen and I can boot from /dev/mapper/nvidia_.... Now the next step is to see how I can get rid of this folly.

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• How do multiple displays work on a AMD 785G / ATI HD 4200 motherboard?

  - by aireq

  I just ordered a ASUS M4A785TD-V EVO which has the AMD 785G chipset and HD4200 integrated graphic. The board has VGA, DVI, and HDMI outputs. I'm wondering how many outputs I can run at once, and from what connectors? My guess is that I can only use the VGA, and either the DVI or the HDMI in a dual setup. But not the HDMI and the DVI at the same time. Is this correct? If I have devices plugged into both the HDMI and the DVI ports is there a way to choose between which port I want to use? I have a dual 19" monitor setup, as well as a LCD TV. I'd like to run the VGA and the DVI into my two monitors, and then the HDMI to my TV. Then when I want to watch something on the TV I'd like to be able to switch over from the DVI to the HDMI. Is this possible with out crawling under my desk and unplugging/plugging things in? Update I found the following in the manual off ASUS's website, which confirms my original suspicion that HDMI and DVI can't be used at the same time. But I'd still like to know if it's possible through software to switch between using the HDMI and DVI.

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• Cisco SG200 vlan issue in ESXi VSA cluster

  - by George

  I have three Cisco SG200-26 switches, and I also have two ESXi hosts that I have connected like shown in the below "best practice" map by VMware: http://communities.vmware.com/servlet/JiveServlet/previewBody/17393-102-1-22458/VSA_networking_map.pdf Even though I created the VLANs in the SG200 and I set the two VLANs (508 and 608) as allowed for these untagged ports (where my ESX NIC's are connected), I can not ping from host 1 to host 2 when configuring the NIC's to use 608 VLAN. Am I missing something? my IP's are all in the 192.168. range, and the only reason I need the VLANs is to isolate the traffic of VSA back-end internally, only the two hosts will be using the VLANs. So I think I do not have to create virtual interfaces on my router since that's the case, is my understanding correct? Also sending my switch config screenshot below.. all 3 switches have the latest firmware (it seems these were originally linksys and got rebranded as cisco after the acquisition) http://img31.imageshack.us/img31/2503/switch.gif Any ideas what to change on the Cisco SG200 to make this work , would be appreciated! The second VLAN (608) only needs two IP's: 192.168.0.1 and 192.168.0.2 The first VLAN (508) will have about 15 IP's for ESXi Management and VSA cluster service, I could use either 192.168.1.xx or 10.0.1.xx The rest of my network (about 50 clients) is in 192.168.1.xx range VMware also states that the VLAN protocol on the physical switch must be 802.1Q, not ISL, anyone knows which of the two my SG200-26 uses? In addition to that, the only requirement from VSA is that my two hosts: -Are in the same subnet. -Have static IP addresses set. -Have the same Default Gateway configured. If I need inter-vlan routing for this, I suppose I have to create virtual interfaces on my sonicwall, and assign an IP for each VLAN, and then set routes between them? Thank you for your time!

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• SIP and NAT routers?

  - by OverTheRainbow

  Hello SIP was not built with NAT routers in mind, and I'd like to get to the bottom of this issue to check what needs to be done on all devices so it works with NAT routers, and understand in what context it just can't be used and I should check more NAT-friendly alternatives like IAX. A picture being worth a thousand words, here's the layout I need to use: http://img62.imageshack.us/img62/4077/sipandnatrouters.jpg The PBX server is located in the private LAN behind a NAT router connected to the Internet (I know it'd be easier if it were located in the public network, but this router doesn't support DMZ's so the server has to be in the private network) A couple of (soft|hard)phones are located on the same LAN and connected to the PBX server, along with a PSTN gateway (Linksys 3102 or a Digium PCI card) Remote users using (soft|hard)phones are located somewhere on the Net with dynamic IP's and are also located behind NAT routers I may or may not have control over the local NAT router where the PBX server is located, but I have no control over the remote NAT routers, either because the users don't have the computer knowledge to map ports or because the routers are off-limit (eg. web cafés, hotel LAN's, etc.) Is it possible to configure the PBX server, the (soft|hard)phones, and the PSTN gateway so that the all conversations work fine, no matter the endpoints (POTS caller/local phone, POTS caller/remote phone, local phones, remote phone/local phone)? In which cases may I expect problems, and are there solutions? FWIW, I'm leaning toward using Freeswitch, but I could end up using Asterisk if there are technical advantages to it in this context. Thank you for any info.

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