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• Symbolic link not allowed or link target not accessible

  - by TK Kocheran

  I can't seem to get a symlink working in my Apache VirtualHost, no matter what I try and I see the following error in the error log: Symbolic link not allowed or link target not accessible: /var/www/carddesigner I can browse the actual symlink from Linux with no problems whatsoever: $ ls -l /var/www | grep "carddesigner" lrwxrwxrwx 1 rfkrocktk rfkrocktk 64 2011-02-28 16:52 carddesigner -> /home/rfkrocktk/Documents/Projects/Work/carddesigner/build/main/ Additionally, I've made sure that the my VirtualHost allows the FollowSymLinks option: /etc/apache2/sites-enabled/000-localhost: <VirtualHost 127.0.0.1:80> ServerAdmin ########## DocumentRoot /var/www <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Deny from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel debug CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> RewriteEngine On RewriteLog "/var/log/apache2/mod_rewrite.log" RewriteLogLevel 9 </VirtualHost> I can't seem to find any other configuration files that seem to override this and/or prevent symlinks from being loaded. Any ideas? Here are my permissions on the actual referenced files: $ ls -l ~/Documents/Projects/Work/carddesigner/build/main total 12 drwxrwxrwx 5 rfkrocktk rfkrocktk 4096 2011-02-28 16:11 advanced drwxrwxrwx 2 rfkrocktk rfkrocktk 4096 2011-02-28 16:10 core drwxrwxrwx 2 rfkrocktk rfkrocktk 4096 2011-02-28 16:10 simple Seems like the permissions are good to go, right?

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• No external src ip in log files (my router ip appears instead)

  - by bongo_fury

  I recently retired my workhorse WRT54G router/AP in favor of a Linksys EA2700. Since then, all inbound traffic (bound to an Ubuntu 10.02 box running LAMP)logged to Syslog, Apache's error and access logs, etc. (all behind said router) is getting logged with a src ip of 192.168.1.1, that of the router's internal ip. For example, here is an old entry from apache's access.log: 74.82.68.20 - - [22/Feb/2011:10:14:34 -0600] "GET /assets/css/style.css HTTP/1.1" 304 154 "http://example.com/view.php?event_id=1" "BlackBerry8520/5.0.0.822 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/100" And here is one since switching the router: 192.168.1.1 - - [05/Oct/2012:21:29:25 -0500] "GET /somedir/print.css HTTP/1.1" 200 650 "http://example.com/somedir/" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1"** That first field is the problem. Each and every entry in every log shows an "external" IP of 192.168.1.1, which isn't very helpful. Any ideas? Much thanks from a n00b!

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• Apache 403 after configuring varnish

  - by w0rldart

  I just don't know where else to look and what else to do. I keep getting a 403 error on all my vhosts after setting varnish 3.0 Apacher log: [error] [client 127.0.0.1] client denied by server configuration: /etc/apache2/htdocs Headers: http://domain.com/ GET / HTTP/1.1 Host: domain.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Connection: keep-alive Cookie: __utma=106762181.277908140.1348005089.1354040972.1354058508.6; __utmz=106762181.1348005089.1.1.utmcsr=OTHERDOMAIN.com|utmccn=(referral)|utmcmd=referral|utmcct=/galerias/cocinas Cache-Control: max-age=0 HTTP/1.1 403 Forbidden Vary: Accept-Encoding Content-Encoding: gzip Content-Type: text/html; charset=iso-8859-1 X-Cacheable: YES Content-Length: 223 Accept-Ranges: bytes Date: Sat, 01 Dec 2012 20:35:14 GMT X-Varnish: 1030961813 1030961811 Age: 26 Via: 1.1 varnish Connection: keep-alive X-Cache: HIT ---------------------------------------------------------- /etc/default/varnish: DAEMON_OPTS="-a ip.ip.ip.ip:80 \ -T localhost:6082 \ -f /etc/varnish/main.domain.vcl \ -S /etc/varnish/secret \ -s file,/var/lib/varnish/$INSTANCE/varnish_storage.bin,1G" #-s malloc,256m" My vcl file: http://pastebin.com/axJ57kD8 So, any ideas what I could be missing? Update Just so you know, ports: NameVirtualHost *:8000 Listen 8000 and <VirtualHost 205.13.12.12:8000>

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• How to configure TFTPD32 to ignore non PXE DHCP requests?

  - by Ingmar Hupp

  I want to give our Windows guy a way of easily PXE booting machines for deployment by plugging his laptop into one of our site networks. I've set up a TFTPD32 configuration which does just that, and our normal DHCP server ignores the PXE DHCP requests due to them having some magic flag, so this part works as desired. However I'm not sure how to configure TFTPD32 to only respond to PXE DHCP requests (the ones with the magic flag) and ignore all normal DHCP requests (so that the production machines don't get a non-routed address from the PXE server). How do I configured TFTPD32 to ignore these non-PXE DHCP requests? Or if it can't, is there another equally easy to use piece of software that he can run on his Windows laptop? Since the TFTPD part is working fine, a DHCP server with the ability to serve PXE only would do. Worst case I'll have to set up a virtual machine with all this, but I'd much prefer a small, simple solution. I'm not interested in solutions that involve using the existing DHCP servers or separating machines on the network for deployment, the whole point is to be simple and stand-alone.

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• Internet connection & IIS stopped on windows xp after VMware server 2 installation

  - by Eduardo Xavier

  Hi, I'm running a local network. My IP ranges from 192.168.1.2 to 192.168.1.15. All IP are static ones. And my router's IP is 192.168.1.1 and I provide it as default gateway and preferred DNS server on client machines. Everything worked fine on this scenario. I could use internet and reach services on other machines. BUT I have installed VMware server 2 on the windows XP to host windows 2003 Virtual Machine (VM). I set the following configuration: Windows XP's => 192.168.1.11. Windows 2003 => 192.168.1.12. (virtual machine) This approach worked just fine as it used to work with Microsoft Virtual PC. I can access mysql & IIS websites on the windows 2003 virtual machine. BUT two things doesn't work anymore on the Windows XP: internet connection - but I can see the MAC address on the wireless router IIS - Ping on 127.0.0.1 it's ok as I can hit localhost:8222 nor localhost Does anyone knows how to fix any of this? (at least the internet connection)

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• Static file serving only works if root is a subfolder under public

  - by lulalala

  I am trying to serve static cache files using nginx. There are index.html files under the rails_root/public/cache directory. I tried the following configuration first, which doesn't work: root <%= current_path %>/public; # $uri always contains one slash(the first slash but not the last) try_files /cache$uri/index.html /cache$uri.html @rails; This give error: [error] 4056#0: *13503414 directory index of "(...)current/public/" is forbidden, request: "GET / HTTP/1.1" I then tried root <%= current_path %>/public/cache; # $uri always contains one slash(the first slash but not the last) try_files $uri/index.html $uri.html @rails; And to my surprise this works. Why is it that I can do the latter not the former( since they point to the same location) The permissions of the folders are: 775 public 755 cache 644 index.html The thing is that my favicon sitting under public/ is served correctly: # asset server server { listen 80; server_name assets.<%= server_name %>; expires max; add_header Cache-Control public; charset utf-8; root <%= current_path %>/public; }

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• GlusterFS on VMWare ESXi 5

  - by Dharmavir

  I want to build network file system on top of my VMWare ESXi based virtual nodes which are running Ubuntu 12.04 LTS. I am evalaluating options and found that GlusterFS (http://www.gluster.org/) can turn out to be a good choice. Purpose: I have about 2 dozen VM nodes with different configurations, on 2 physical nodes which has following configuration: 16 core Intel Xeon 1 TB 48 GB RAM Now as I said earlier each Physical server has about 1TB hdd and I can increase if I want additional so for now I have 2TB disk space available, these space is distributed in VM nodes I have created on which about 2 dozen VM nodes live. Now some of them being application server and mgmt server, they have plenty of free disk space which I want to utilize for some heavy storage which I can not design if I do that individually on single VM node. This way if my storage is distributed between dozens of VM nodes and about 2 or more physical nodes I have some sort of backup as well. I do not mind if data gets stored redundently but per my knowledge it might hapeen that individual VM nodes will not be able to store all of the data because complete data size for example if we take 100GB will exceed VM disk size of 70GB and then VM will also have system and program files on it. I need some suggestion that will GlusterFS be the solution for which I am looking forward to or I should go with something like hadoop? I am not too sure. But yes, I would like to utilize my free space on each VM node and while doing that if I get store data redundently I am okay because it will give me data security.

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• Apache 2 proxy for Tomcat 7

  - by hsnm

  Following the how-to, I wanted to make a proxy for traffic to the address /app to be processed by Tomcat 7. I added this to my httpd.conf: LoadModule proxy_module {path-to-modules}/mod_proxy.so LoadModule deflate_module modules/mod_deflate.so ProxyPass /app http://localhost:8081 ProxyPassReverse /app http://localhost:8081 I also have this on my server.xml: <Connector port="8081" enableLookups="false" acceptCount="100" connectionTimeout="20000" proxyName="localhost" proxyPort="80"/> And I have the folder /var/lib/tomcat7/webapps/app with my application files. I restarted both Tomcat 7 and Apache 2 after doing the configurations above. Problem: When navigating to my webpage.com/app, I get the error 500. I consulted apache logs, it says: [warn] proxy: No protocol handler was valid for the URL /app. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule. Update: This is running in ubuntu. I resolved this by adding LoadModule proxy_http_module modules/mod_proxy_http.so to my httpd.conf. Now I have another question: How can I make this proxy to work on SSL through port 443?

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• Nginx ignores HTTP Authentication for WordPress login directory

  - by MrNerdy

  I am running WordPress in a subfolder of my domain for testing and development purposes on a VPS LEMP-stack. In order to password-protect the wp-login.php with an etxra layer, I used HTTP authentication for the wp-admin folder. The problem is that the http authentication is ignored. When the wp-login.php or wp-admin-folder is called, it goes directly to the normal WordPress-login. I installed everything from the command line in the following way: sudo apt-get install apache2-utils sudo htpasswd -c /var/www/bitmall/wp-admin/.htpasswd exampleuser New password: Re-type new password: Adding password for user exampleuser My Nginx configuration file looks like this: server { listen 80; root /var/www; index index.php index.html index.htm; server_name example.com; location / { try_files $uri $uri/ /index.html; } location /bitmall/wp-admin/ { auth_basic "Restricted Section"; auth_basic_user_file /var/www/bitmall/wp-admin/.htpasswd; } location ~ /\.ht { deny all; } error_page 404 /404.html; error_page 500 502 503 504 /50x.html; location = /50x.html { root /var/www; } # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 location ~ \.php$ { try_files $uri =404; fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } I would appreciate your advive on this.

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• ssh timeout issue connecting to an EC2 instance on OS X

  - by mamusr

  I am new to AWS and not a networking expert but curious to know more about it. I created a VPC with a public subnet only. Then i created an EC2 instance using an Ubuntu 14.04 64-bit pv AMI image (ami-e84d8480) as well generating the key pair needed to connect to it through ssh. I followed amazon's instructions to connect to an EC2 instance via ssh which did not work. Here is my attempted input and debug log: Running on OS X 10.9.4 user$ ssh -vvv -i key.pem [email protected] OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 102: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port 22. debug1: connect to address xxx.xxx.xxx.xxx port 22: Operation timed out ssh: connect to host xxx.xxx.xxx.xxx port 22: Operation timed out To attempt to resolve the issue: I enabled the SSH port. Tried different usernames other than ubuntu, like ec2-user and root. Initially set an inbound ssh rule in the security group to connect to only my ip address. When that did not work, i changed it to allow any ip to connect. But those actions did not fix the problem. Here are my guesses as to what i am missing in getting the EC2 instance connection to work. My etc/ssh_config file may be preventing the connection from taking place. I may have missed an important networking detail when setting up the VPC. I do not have a public ip address specified for the instance. I am connecting through the private ip address. My questions for the community: Am i going about it the wrong way connecting to the instance through the private ip address? if so, do i need to specify a public ip address for it to connect or some other method?

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• Linux NIC Bonding Issue (CentOS 4 / RHEL 3)

  - by jinanwow

  I am having an issue with bonding NICs on CentOS 4. It appears the bonding driver does work, but it is stuck in round-robin mode and I am trying to get to active-backup. The current config is: ifcfg-bond0 DEVICE=bond0 IPADDR=192.168.204.18 NETMASK=255.255.255.0 ONBOOT=yes BOOTPROTO=none USERCTL=no TYPE=Bonding BONDING_OPTS="mode=1 miimon=100" ifcfg-eth1 DEVICE=eth1 BOOTPROTO=none ONBOOT=yes TYPE=Ethernet MASTER=bond0 SLAVE=yes ifcfg-eth3 DEVICE=eth3 ONBOOT=yes BOOTPROTO=none TYPE=Ethernet MASTER=bond0 SLAVE=yes cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v2.6.3-rh (June 8, 2005) Bonding Mode: load balancing (round-robin) MII Status: up MII Polling Interval (ms): 0 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:17:a4:8f:94:b1 Slave Interface: eth3 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:1b:21:56:b8:69 cat /etc/modprobe.conf alias eth0 tg3 alias eth1 tg3 alias eth3 e1000 alias eth2 e1000 alias bond0 bonding options bond0 mode=1 miimon=100 I have tried moving the bonding information out of the ifcfg-bond0 into the modprobe configuration file. It seems that it is stuck in RR and I am trying to get it into the Active-backup (mode 1) state. Any ideas what would be causing this issue?

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• Bridged network on OS X only gets UDP broadcast traffic

  - by a paid nerd

  I've created a bridged network Mac OS X 10.8.5 using ifconfig and TUNTAP for OS X to bridge my wireless connection, en0, with a virtual interface, tap0, which I can use for guest VMs: $ sudo sysctl -w net.inet.ip.forwarding=1 $ sudo sysctl -w net.link.ether.inet.proxyall=1 $ sudo sysctl -w net.inet.ip.fw.enable=1 $ sudo ifconfig bridge0 create $ sudo ifconfig bridge0 addm en0 addm tap0 $ sudo ifconfig bridge0 up $ ifconfig en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 28:cf:xx:xx:xx:xx inet6 xxxx::xxxx:xxxx:xxxx:xxxx%en0 prefixlen 64 scopeid 0x4 inet 192.168.100.64 netmask 0xffffff00 broadcast 192.168.100.1 media: autoselect status: active bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether ac:de:xx:xx:xx:xx Configuration: priority 0 hellotime 0 fwddelay 0 maxage 0 ipfilter disabled flags 0x2 member: en0 flags=3<LEARNING,DISCOVER> port 4 priority 0 path cost 0 member: tap0 flags=3<LEARNING,DISCOVER> port 8 priority 0 path cost 0 tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 ether ca:3d:xx:xx:xx:xx open (pid 88244) However, if I tcpdump -i tap0, I only see broadcast traffic. Shouldn't I see a mirror of everything on en0? (192.168.100.33, the host doing the broadcasting, is another unrelate, noisy server on my LAN.) (I asked a similar question here and will probably close it.)

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• Secondary IP (eth0:0) acts like main server IP

  - by George Tasioulis

  I have a CentOS server, configured with 4 consecutive IPs: eth0 5.x.x.251 eth0:0 5.x.x.252 eth0:1 5.x.x.253 eth0:2 5.x.x.254 The problem is that all traffic goes out to the internet with eth0:0 (5.x.x.252) as the source IP, instead of eth0. # curl ifconfig.me 5.x.x.252 How can I fix this, so that all traffic goes out via eth0, ie my main IP? PS: My server is VPS running on a Xen dom0, the latter being configured in routed mode networking. Thanks in advance! Server configuration # ifconfig eth0 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.251 Bcast:5.x.x.255 Mask:255.255.255.255 inet6 addr: fe80::x:x:x:x/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:14675569 errors:0 dropped:0 overruns:0 frame:0 TX packets:9463227 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4122016502 (3.8 GiB) TX bytes:25959110751 (24.1 GiB) Interrupt:23 eth0:0 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.252 Bcast:5.x.x.255 Mask:255.255.255.224 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:23 eth0:1 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.253 Bcast:5.x.x.255 Mask:255.255.255.224 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:23 eth0:2 Link encap:Ethernet HWaddr 00:x:x:x:x:AE inet addr:5.x.x.254 Bcast:5.x.x.255 Mask:255.255.255.224 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:23 # cat /etc/hosts 127.0.0.1 localhost.localdomain localhost 5.x.x.251 [fqdn] [hostname] # cat ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static ONBOOT=yes IPADDR=5.x.x.251 NETMASK=255.255.255.224 SCOPE="peer 5.x.y.82" # cat ifcfg-eth0:0 DEVICE=eth0:0 BOOTPROTO=static ONBOOT=yes IPADDR=5.x.x.252 NETMASK=255.255.255.224 # cat route-eth0 ADDRESS0=0.0.0.0 NETMASK0=0.0.0.0 GATEWAY0=5.x.y.82 # netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 5.x.y.82 0.0.0.0 255.255.255.255 UH 0 0 0 eth0 5.x.x.224 0.0.0.0 255.255.255.224 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 5.x.y.82 0.0.0.0 UG 0 0 0 eth0

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• Patching Synaptics Driver In Ubuntu

  - by danben

  I've got an HP Envy with the new Synaptics Clickpad - the device is not supported out of the box by Ubuntu, so I downloaded this patch (https://patchwork.kernel.org/patch/67335/), applied it to synaptics.c in the linux kernel source, rebuilt the kernel and booted from it. Nothing changed. I'm new to Linux and don't know much about driver configuration; how can I check that the newly-produced synaptics.o file is actually being used somewhere? Or if it is obvious, what step did I leave out? Separately, I tried following the instructions in this thread: http://georgia.ubuntuforums.org/showpost.php?p=8989185&postcount=11 There, someone posted the patch along with a Makefile and instructions for installation. When I followed those, my mouse stopped working altogether. Not desirable, but at least I know it had some effect. The Makefile is posted below; I get the gist of what it's doing, but don't have enough knowledge to figure out why it would cause the device to stop responding entirely. obj-m := psmouse.o psmouse-objs := psmouse-base.o synaptics.o psmouse-$(CONFIG_MOUSE_PS2_ALPS) += alps.o psmouse-$(CONFIG_MOUSE_PS2_ELANTECH) += elantech.o psmouse-$(CONFIG_MOUSE_PS2_OLPC) += hgpk.o psmouse-$(CONFIG_MOUSE_PS2_LOGIPS2PP) += logips2pp.o psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) += lifebook.o psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT) += trackpoint.o psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT) += touchkit_ps2.o KDIR := /lib/modules/$(shell uname -r)/build PWD := $(shell pwd) default: $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules install: @cp psmouse.ko /lib/modules/$(shell uname -r)/kernel/drivers/input/mouse/

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• RRAS VPN on windows 2k3 AD, can access rras server only.

  - by nopsax

  I'm setting up a test lab and here is the current configuration: 192.168.86.201 - a windows 2003 machine acting as PDC with AD/DNS/DHCP/WINS. 192.168.86.62 - windows 2003 machine is the RRAS server with IAS, also a file/print server. 192.168.86.6 - gateway/router to internet 192.168.86.21 - Windows XP Workstation Everything works on the internal network, File/Print/AD etc. Whenever a user connects via vpn to the RRAS server remotely using their domain credentials, they are assigned an ip address from the 192.168.86.201 machine along with the wins server address etc. The vpn user can then ping/access resources on the RRAS server, but cannot ping/access resources of any other machines by name or ip. However, if I ping by name, it does resolve to the correct ip address, just no replies. I did notice that on the RRAS server the 'internal' interface gets an ip address of 192.168.86.75 when a remote user connects, and the remote user is assigned, for example 192.168.86.71 . The RRAS server responds on both the .62 and .75 ip addresses. The client also unchecks the 'use remote default gateway option'. Also, I tried connecting a laptop to the physical network, joining the domain, then going remote and dialing the connection before domain login, and everything seems to work, e.g. browse-able shares via network neighborhood. But I can't really join the domain remotely if I cannot access any other resources. I really need to monitor traffic to see whats happening to those packets but won't be able to until this weekend. Any help is appreciated, will provide whatever configurations are needed.

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• MySQL -- enable connection to remote server via local /tmp/mysql.sock

  - by Kevin

  Hey all, I run a shared hosting provider and we're looking to move to a High Availability (replicated across multiple datacenters) setup for our hosting. We have created a replicated MySQL setup with failover that works wonderfully, and we'd like to move all of our clients' databases to it. The only trouble is that we have many many customers, all of whom have configured their Wordpress, Drupal, etc. installations to connect to MySQL via a local socket, not to the address of the remove server. I would hate to have to go through manually and change the connection statement in all of our clients' sites. What I'd ideally love to see is a program that listens on /tmp/mysql.sock and forwards connections there to the remote server I specify. I've seen SQL Relay, but it seems to require that I hardcode all of the database names and usernames and passwords into its configuration file. This is not going to work for me because our users add new databases dynamically all of the time, and I'd rather not have to write code to updated SQLRelay's config file every time. Does anyone have an idea on how to do this? Alternatively, I'd accept idea on how to handle this at the PHP level. (i.e. redirect any attempted calls to mysql_connect() to use that hostname rather than localhost) Thanks, Kevin

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• SQL Server Installaion error 0x84B40000

  - by Kurtevich

  I have a problem installing SQL Server 2008 R2. Long time ago I had it installed, and then uninstalled. It was left in "Add/remove programs", but I didn't pay attention on that. I had 2005 installed. And now there is a need to install 2008. I removed 2005 and started installing 2008, but it says that space on C: is not enough. That's when I found out that "Add/remove programs" shows it occupying more than 4 gigabytes, though I used to uninstall it. So I click "Remove", it shows all those many screens and validations, shows that removal completed, but the size of Program Files folder is still more than 4 GB. I removed (from "Add\remove programs" everything that had "SQL Server" in it's name, but that main "SQL Server 2008" item is still there and still 4 GB and uninstalling does nothing. Because installation of SQL Server did not show existing instances, and I don't see any running services related to SQL server (well, almost any, more details in the end), I though that this folder contains just some leftover staff and data and deleted it manually. Then agreed to removing of the item in "Add/remove programs" and everything looks clean. Now every time I try to install SQL Server (even in the minimum configuration), I receive the following error: SQL Server Setup has encountered the following error: The specified credentials that were provided for the SQL Server service are not valid. To continue, provide a valid account and password for the SQL Server service. Error code 0x84B40000. What is this service mentioned here? This error looks like I'm trying to add features to existing server and it can't login. But the setup didn't ask me for any credentials, except one username that couldn't be changed. Here are the services shown that can be related, both disabled and pointing to non-existing executables: SQL Active Directory Helper Service SQL Full-text Filter Daemon Launcher (MSSQLSERVER) I understand that this must be because of my manual deletion, but is there a way to clean it up now?

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• Tomcat web application intermittent freeze

  - by tinny

  I have a Grails web application (just a standard war file) deployed on a Ubuntu 10.10 server running on tomcat 6. My database is postgresql. The problem is that every so often (once or twice a day after inactivity) when I try to log into this web application it just freezes. I can navigate to the login page but when I try and login (first time the DB is hit, might be a clue..?) the application just freezes indefinitely, no 500 response code... the browser just waits and waits. I followed the instructions detailed here because the problem described sounded the same as mine. My GC logging showed no long running GC, all sub sec. When the application freezes a jmap heap output is... using parallel threads in the new generation. using thread-local object allocation. Concurrent Mark-Sweep GC Heap Configuration: MinHeapFreeRatio = 40 MaxHeapFreeRatio = 70 MaxHeapSize = 536870912 (512.0MB) NewSize = 21757952 (20.75MB) MaxNewSize = 87228416 (83.1875MB) OldSize = 65404928 (62.375MB) NewRatio = 7 SurvivorRatio = 8 PermSize = 21757952 (20.75MB) MaxPermSize = 85983232 (82.0MB) Heap Usage: New Generation (Eden + 1 Survivor Space): capacity = 19595264 (18.6875MB) used = 11411976 (10.883308410644531MB) free = 8183288 (7.804191589355469MB) 58.23843965562291% used Eden Space: capacity = 17432576 (16.625MB) used = 9249296 (8.820816040039062MB) free = 8183280 (7.8041839599609375MB) 53.05754009046053% used From Space: capacity = 2162688 (2.0625MB) used = 2162680 (2.0624923706054688MB) free = 8 (7.62939453125E-6MB) 99.99963008996212% used To Space: capacity = 2162688 (2.0625MB) used = 0 (0.0MB) free = 2162688 (2.0625MB) 0.0% used concurrent mark-sweep generation: capacity = 101556224 (96.8515625MB) used = 83906080 (80.01907348632812MB) free = 17650144 (16.832489013671875MB) 82.62032270912317% used Perm Generation: capacity = 85983232 (82.0MB) used = 62866832 (59.95448303222656MB) free = 23116400 (22.045516967773438MB) 73.1152232100324% used Anyone know what "From Space:" is? Any ideas on further fault finding ideas? I dont have much experience with this type of fault finding.

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• Fetch videos from sony handycam to linux

  - by bstpierre

  I've got a Sony Handycam DCR-DVD101. When I plug connect the USB cable to my laptop (Ubuntu 10) it doesn't mount any storage device. If I run usb-devices, I see: T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 6 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=054c ProdID=00c1 Rev=01.00 S: Manufacturer=SONY S: Product=Storage Device C: #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=2mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=05 Prot=50 Driver=usb-storage The driver says usb-storage, but I'm not sure how to get the device mounted. Is there a way to make this work? Update: checking dmesg, I see: [259072.576559] usb 2-1.1: new high speed USB device using ehci_hcd and address 6 [259072.687200] usb 2-1.1: configuration #1 chosen from 1 choice [259072.836188] Initializing USB Mass Storage driver... [259072.836476] scsi5 : SCSI emulation for USB Mass Storage devices [259072.836632] usb-storage: device found at 6 [259072.836636] usb-storage: waiting for device to settle before scanning [259072.836660] usbcore: registered new interface driver usb-storage [259072.836666] USB Mass Storage support registered. [259077.830410] usb-storage: device scan complete [259077.832343] scsi 5:0:0:0: CD-ROM SONY DDX-A1010 R1.0 PQ: 0 ANSI: 0 [259077.888167] sr1: scsi3-mmc drive: 0x/0x pop-up [259077.888446] sr 5:0:0:0: Attached scsi CD-ROM sr1 [259077.888593] sr 5:0:0:0: Attached scsi generic sg2 type 5 [259080.002079] sr 5:0:0:0: [sr1] Unhandled sense code [259080.002085] sr 5:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [259080.002091] sr 5:0:0:0: [sr1] Sense Key : Blank Check [current] [259080.002097] sr 5:0:0:0: [sr1] Add. Sense: No additional sense information [259080.002104] sr 5:0:0:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 00 00 [259080.002117] end_request: I/O error, dev sr1, sector 0 [259080.002123] Buffer I/O error on device sr1, logical block 0 [259080.002128] Buffer I/O error on device sr1, logical block 1 Those I/O errors don't look good, is there any hope?

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• ULogd2.x - Documents - IPFIX data generation

  - by Gomathivinayagam

  I would like to generate IPFIX data from the packets that are coming to my local system as part of experimentation. It seems ULogd is a good tool to do that. I am able to capture PCAP data. But there are very less documents available on ULogd2.x about IPFIX format data generation.(There are very few examples provided in ulogd.conf). Can you provide me any links that describes about how to generate IPFIX data using ulogd2.x? 1) What are the options available? I saw there is polling interval configuration. But I have no idea how does it work? 2) If I set hash_enable = 0, and uncomment the polling_interval value, I'm getting an exception as NFCT plugin requires hash table, evne though I have specified hash_buckets and hash_max_entries. Could you help on this? 3) In general, I would like to know how NFCT plugin works in ulogd2.x. I sent mail to ulogd mailing list, but there are no replies. Could you shed some light?

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• running red5 on port 80

  - by ArneLovius

  I have a red5 application http://code.google.com/p/openmeetings that runs under red5, and is accessible on port 5080 and 8443 I've installed it on Ubuntu 10.04 The eventual aim is to have it accessible via https on 443 instead of 8443, but I thought I would initially try on 80 so that any issues were just down to the port configuration and not SSL certificates. I've tried changing the port from 5080 to 80 in the red5.properties file, but it fails to start. In the red5.log I have seen ERROR o.a.coyote.http11.Http11Protocol - Error initializing endpoint java.net.BindException: Permission denied /0.0.0.0:80 In the error.log I have seen ERROR o.a.coyote.http11.Http11Protocol - Error initializing endpoint java.net.BindException: Permission denied /0.0.0.0:80 and ERROR org.red5.server.tomcat.TomcatLoader - Error loading tomcat, unable to bind connector. You may not have permission to use the selected port org.apache.catalina.LifecycleException: Protocol handler initialization failed: java.net.BindException: Permission denied /0.0.0.0:80 There is nothing else installed or running on port 80, so I presume that this is a "needs to be root" situation. I would rather not run an Internet accessible web service as root. I know that Tomcat can run on port 80 by changing “#AUTHBIND=no” to “AUTHBIND=yes” in /etc/default/tomcat6 but I have not been able to find anything similar for red5. Am I on a hiding to nothing, or is there better way than running as root ? Thanks!

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• Apache 403 Forbidden Error when accessing local web server using local IP address

  - by amjo324

  I have an odd problem when attempting to browse to pages stored on a local web server (Apache 2.2). The pages are served as expected when I browse to localhost or 127.0.0.1 on port 80. Yet when I attempt to browse to the same pages by referencing the local IP address (192.168.x.x), I receive a HTTP 403 (Forbidden) error. In essence, http://localhost:80 works but 192.168.x.x:80 doesn't even though I'm specifying the IP of the local machine. You may be thinking "who cares? just use localhost". However, this is the first step in troubleshooting why I cannot remotely access these pages from different hosts on my LAN. I'm presuming this can't be a firewall issue as I'm only connecting to the local machine. Even so, I verified there was no iptables rules that could be having an effect. I've checked the Apache error logs and the corresponding line of relevance is: [Sat Oct 19 07:38:35 2013] [error] [client 192.168.x.x] client denied by server configuration: /var/www/ I've inspected most of the apache config files and they don't appear to differ from what you would expect with a default install. I can't see anything in apache2.conf that would be a problem and httpd.conf is an empty file. This is an excerpt from /etc/apache2/sites-enabled/000-default: <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /var/www <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> Any insight as to where I can look next to find a solution ? Thanks in advance.

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• Active Directory LDAP and user issues (using apache2 for svn access)

  - by CaCl

  I currently have a setup where I work that lets users use their active directory domain logins and passwords to authenticate and authorize access to Subversion. Currently I need to allow application accounts the same access. So our IT group creates application accounts in the active directory for us to use. But they want to be "secure" so they set the "Workstations Allowed" to be only a limited number of workstations. So when an application account hits the apache2 server for authentication they can't login for some reason and I'm having a heck of a time trying to debug. The error logs only show me: [Tue Apr 06 11:24:25 2010] [warn] [client 24.24.24.24] [3469] auth_ldap authenticate: user appuser13 authentication failed; URI /svn [ldap_simple_bind_s() to check user credentials failed][Invalid credentials] [Tue Apr 06 11:24:25 2010] [error] [client 24.24.24.24] user appuser13: authentication failure for "/svn": Password Mismatch I've checked the password numerous times and it appears to be correct but I can't seem to get the user to authenticate properly. Below is a snippet of the apache configuration for ldap: # Auth providers # Active Directory <AuthnProviderAlias ldap ldap1> AuthBasicProvider ldap AuthLDAPURL "ldap://dmain.company.com:389/dc=dmain,dc=company,dc=com?sAMAccountName?sub?(objectClass=*)" AuthLDAPBindDN "CN=svnuser13,OU=Application Accounts,dc=dmain,dc=teradata,dc=com" AuthLDAPBindPassword secret3 </AuthnProviderAlias> # Another set of users from a different group <AuthnProviderAlias ldap ldap2> AuthBasicProvider ldap AuthLDAPURL ldap://diffldapserver:389/dc=specialusers,dc=com?uid </AuthnProviderAlias> # Another set of users from a different group <AuthnProviderAlias file file1> AuthUserFile /var/svn/auth/htpasswd </AuthnProviderAlias> <Location /svn> DAV svn SVNPath /var/svn Satisfy Any Require valid-user AuthType Basic AuthName "SVN Repository" AuthBasicProvider ldap1 file1 ldap2 AuthzSVNAccessFile /var/svn/auth/access AuthzLDAPAuthoritative on Require valid-user </Location> Any help, like tips for debugging is appreciated!

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• Security in shared hosting vs VPS 'virtual appliances'

  - by Pedro Loureiro

  I have to change my hosting provider. Right now I have a shared hosting account but I'm considering trying the LAMP stack appliance from turnkeylinux.org. I'm very comfortable with using linux, I've been using it for a long time. I have no problem ssh'ing into remote machines and do whatever I have to do (coding, reading logs, moving files, deploying, etc). The problem is that none of those tasks have involved securing the server/firewall. My experience has been as a desktop user or developer deploying apps/files in remote servers. Ignoring the security in the application logic (read: any scripts, frameworks, websites I might have created or installed) - I'm worried about things like base configuration of deamons, firewall, ports, executable scripts being readable from the outside and whatnot. My question is: how do you compare the (expected) out of the box security of the LAMP stack from turnkey and the (expected) security of a "regular" shared hosting provider? I was hoping to find some guides with a list of steps to do to protect my server but the only documentation I found was simply referring to ubuntu's documentation.

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• svn using nginx Commit failed: path not found

  - by Alaa Alomari

  I have built svn server on my nginx webserver. my nginx configuration is server { listen 80; server_name svn.mysite.com; location / { access_log off; proxy_pass http://svn.mysite.com:81; proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; include fastcgi_params; } } Now, i can svn co and svn up normally without having any problem and when i try to commit i get error: $svn up At revision 1285. $ svn info Path: . URL: http://svn.mysite.com/elpis-repo/crons Repository Root: http://svn.mysite.com/elpis-repo Repository UUID: 5303c0ba-bda0-4e3c-91d8-7dab350363a1 Revision: 1285 Node Kind: directory Schedule: normal Last Changed Author: alaa Last Changed Rev: 1280 Last Changed Date: 2012-04-29 10:18:34 +0300 (Sun, 29 Apr 2012) $svn st M config.php $svn ci -m "Just a test, add blank line to config" config.php Sending config.php svn: Commit failed (details follow): svn: File 'config.php' is out of date svn: '/elpis-repo/!svn/bc/1285/crons/config.php' path not found if i try to svn co on port 81 (my proxy_pass which is apache) and then svn ci, it will work smoothly! but why it doesn't work when i use nginx to accomplish it? any idea is highly appreciated.

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