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  • kvm and qemu host: Is there a limit for max CPUs (Ubuntu 10.04)?

    - by Valentin
    Today we encountered a really strange behaviour on two identical kvm and qemu hosts. The host systems each have 4 x 10 Cores, which means that 40 physical cores are displayed as 80 within the operating system (Ubuntu Linux 10.04 64 Bit). We started a Windows 2003 32 Bit VM (1 CPU, 1 GB RAM, we changed those values multiple times) on one of the nodes and noticed that it took 15 minutes until the boot process began. During those 15 minutes, a black screen is shown and nothing happens. libvirt and the host system show that the qemu-kvm process for the guest is almost idling. stracing this process only shows some FUTEX entries, but nothing special. After those 15 minutes, the Windows VM suddenly starts booting and the Windows logo occurs. After a few seconds, the VM is ready to be used. The VM itself is very performant, so this is no performance issue. We tried to pin the CPUs with the virsh and taskset tools, but this only made things worse. When we boot the Windows VM with a Linux Live CD there is also a black screen for several minutes, but not as long as 15. When booting another VM on this host (Ubuntu 10.04) it also has the black screen problem, and also here the black screen is only shown for 2-3 minutes (instead of 15). So, summerinzing this: Each guest on each of those identical nodes suffers from idling a few minutes after being started. After a few minutes, the boot process suddenly starts. We have observed that the idling time happens right after the bios of the guest was initialized. One of our employees had the idea to limit the amount of CPUs with maxcpus=40 (because of 40 physical cores existing) within Grub (kernel parameter) and suddenly the "black-screen-idling"-behaviour disappeared. Searching the KVM and Qemu mailing lists, the internet, forums, serverfault and other various sites for known bugs etc. showed no useful results. Even asking in the dev IRC channels brought no new ideas. The people there recommend us to use CPU pinning, but as stated before it didn't help. My question is now: Is there a sort of limit of CPUs for a qemu or kvm host system? Browsing the source code of those two tools showed that KVM would send a warning if your host has more than 255 CPUs. But we are not even scratching on that limit. Some stuff about the host system: 3.0.0-20-server kvm 1:84+dfsg-0ubuntu16+0.14.0+noroms+0ubuntu4 kvm-pxe 5.4.4-7ubuntu2 qemu-kvm 0.14.0+noroms-0ubuntu4 qemu-common 0.14.0+noroms-0ubuntu4 libvirt 0.8.8-1ubuntu6 4 x Intel(R) Xeon(R) CPU E7-4870 @ 2.40GHz, 10 Cores

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  • What presentation software suits my needs?

    - by claws
    Background: I'm teaching biology to 12th grade students. The syllabus I'm teaching is huge. I mean literally, very huge. There is a lot for students to remember. There are no less than 1000 facts (weird names, dates etc) for students to remember. They'll have to remember all of them, they don't have a choice. The notes I compiled for their learning itself is upto 80 printed pages(Just the bullet outline & facts). That's just one chapter. We have 34 chapters. Also my students are very hardworking, they study upto 8-10hrs per day (Yeah! we are from India :). So, I want to ensure maximum retaining by the students at each and every stage (Teaching & Learning). I'm trying to as many memory training techniques as possible. I'm trying to incorporate, mnemonics, strong visual aids (pictures, 3D-animations, real videos etc.), spaced repetition etc. I think MS powerpoint is not suitable for my needs: There are about 200 slides per chapter. Its very easy for students to get lost while teaching. Because the problem with powerpoint is that it gives facts (as bullets) but it doesn't exploit the association & organization (Concept Map) of the content, which helps students learn quickly. I found an amazing software called XMind. You can see the screenshot here. Problem is that it is not as powerpoint in terms of powerpoint. This software can be used for just for concept maps. In the above screenshot, each topic occupies a single slide. I have an Image/picture(Detailed huge picture) and about 5-10 bullet points and probably a video or an animation of somethings. And this XMind is not good at presenting, in terms that it doesn't allow me to set what to present after what. I want to present a top down view, with a slide for each topic. PS: I Don't like prezi.com. I tried but it simply is too confusing for my students. It zooms here and there. I didn't tried it but I've seen few presentations.

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  • DNS settings for resolving Host name to IP not working?

    - by Hasas Ali Khan
    I want to access my IIS hosted application over LAN. First I installed a DNS server. The DNS configuration steps are: Go to DNS Manager - right click on System Name - click on configure a DNS Server. DNS Server wizard open -, click on next button - Select radio button "forward lookup zone" click on next button. In the second window. click on radio button "The server maintains the zone" and then click next. Give the zone name "example.com" Click on radio button, "Do Not allow dynamic updates". and then click next button. In the next window, click on radio button "No it should not forward query" and then click next button. Complete the configure a DNS server wizard and then click on finish button. After it is managing the DNS records: In DNS server wizard. open tree of forward lookup zone and right click on the new zone name "example.com" - properties and click on "Start of authority" and write values on text boxes serial number=1 primary server=systemname.domainname responsible person=hostmaster.domainname Click on server name, highlight domain name, click on edit button and enter IP address of the server where I host my application. Highlight new zone name and right click on it and click "New Host" option. In this window there are three text boxes: Name(user parent name if blank)=scoring Fully Qualified Domain Name=scoring.example.com IP Address= My IP Address and check on "Create associated pointer(PTR) record" and click on "Add Host" Host button and then click done button. I have host header for my application is "scoring" on port 80 and its working fine on server my application setting are I have change its, Advance setting --> Application Pool Identity --> Local System application can access on server with host name "scoring" but it can not access on machines on LAN. When I change LAN machine host file that is under, C:/windows/system32/driver/etc/host and edit it and enter host name with hosted machine IP like this: scoring 192.168.1.20 By making these changes I can run the application over LAN machines as I mentioned above DNS setting by which I can run App over LAN with out editing the client's host file. What mistake am I doing in this configuration?

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  • dd-wrt router firmware QoS troubleshooting

    - by Jeff Atwood
    I've been using the dd-wrt firmware on my router and I like it a lot! But -- I'm not sure the quality of service (QoS) is working on it. I have it set up as follows: http, port 80 -- Premium bittorrent, port 6969 -- Bulk https, port 443 -- Premium dns, port 53 -- Premium Per the QoS documentation, these levels are: bandwidth is allocated based on the following percentages of uplink and downlink values for each class: Exempt: 100mbps - ignores global limits. Premium: 75% - 100% Express: 15% - 100% Standard: 10% - 100% Bulk: 1.5% - 100% This doesn't entirely seem to work, though -- with busy torrents going I get major pauses in my web browsing which sucks! The QoS documentation gives some steps to check the QoS ... What you'll be interested to look at will be the first set of source and destination IP, including the port numbers. Next the presence of l7proto and the "mark" field. The entries indicate the current live connection QoS priority applied on them based on the "mark" field. The "mark" values correspond to the following Exempt: 100 Premium: 10 Express: 20 Standard: 30 Bulk: 40 (no QoS matched): 0 You may see "mark=0" for some l7proto service even though they are in configured in the list of QoS rules. This may mean that the layer 7 pattern matching system didn't match a new or changed header for that protocol. Custom service on port matches will usually take care of these. On port 6969 (bittorrent) I see a weird mixture of stuff with mark=0 and mark=40 like so cat /proc/net/ip_conntrack udp 17 105 src=98.162.182.42 dst=1.2.3.4 sport=64512 dport=6969 packets=3 bytes=290 src=10.0.0.2 dst=98.162.182.42 sport=6969 dport=64512 packets=4 bytes=202 [ASSURED] mark=0 secmark=0 use=1 tcp 6 117 TIME_WAIT src=98.248.173.174 dst=1.2.3.4 sport=51114 dport=6969 packets=12 bytes=704 src=10.0.0.2 dst=98.248.173.174 sport=6969 dport=51114 packets=10 bytes=440 [ASSURED] mark=40 secmark=0 use=1 tcp 6 598 ESTABLISHED src=165.132.128.201 dst=1.2.3.4 sport=57218 dport=6969 packets=8024 bytes=9919881 src=10.0.0.2 dst=165.132.128.201 sport=6969 dport=57218 packets=4211 bytes=239607 [ASSURED] mark=0 secmark=0 use=1 tcp 6 586 ESTABLISHED src=68.46.9.24 dst=1.2.3.4 sport=64688 dport=6969 packets=6 bytes=490 src=10.0.0.2 dst=68.46.9.24 sport=6969 dport=64688 packets=8 bytes=944 [ASSURED] mark=40 secmark=0 use=1 udp 17 45 src=222.254.228.38 dst=1.2.3.4 sport=25438 dport=6969 packets=5 bytes=454 src=10.0.0.2 dst=222.254.228.38 sport=6969 dport=25438 packets=3 bytes=154 [ASSURED] mark=0 secmark=0 use=1 ( full file visible at http://pastebin.com/AZE6EtWm ) I've been playing around with this log for a little while and I can't see any patterns! Why is some port 6969 bittorrent traffic tagged mark=0 (not matched) by dd-wrt's QoS while others are tagged mark=40 (Bulk) .. any ideas?

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  • FreeBSD jail with IPFW with loopback - unable to connect loopback interface

    - by khinester
    I am trying to configure a one IP jail with loopback interface, but I am unsure how to configure the IPFW rules to allow traffic to pass between the jail and the network card on the server. I have followed http://blog.burghardt.pl/2009/01/multiple-freebsd-jails-sharing-one-ip-address/ and https://forums.freebsd.org/viewtopic.php?&t=30063 but without success, here is what i have in my ipfw.rules # vim /usr/local/etc/ipfw.rules ext_if="igb0" jail_if="lo666" IP_PUB="192.168.0.2" IP_JAIL_WWW="10.6.6.6" NET_JAIL="10.6.6.0/24" IPF="ipfw -q add" ipfw -q -f flush #loopback $IPF 10 allow all from any to any via lo0 $IPF 20 deny all from any to 127.0.0.0/8 $IPF 30 deny all from 127.0.0.0/8 to any $IPF 40 deny tcp from any to any frag # statefull $IPF 50 check-state $IPF 60 allow tcp from any to any established $IPF 70 allow all from any to any out keep-state $IPF 80 allow icmp from any to any # open port ftp (20,21), ssh (22), mail (25) # ssh (22), , dns (53) etc $IPF 120 allow tcp from any to any 21 out $IPF 130 allow tcp from any to any 22 in $IPF 140 allow tcp from any to any 22 out $IPF 150 allow tcp from any to any 25 in $IPF 160 allow tcp from any to any 25 out $IPF 170 allow udp from any to any 53 in $IPF 175 allow tcp from any to any 53 in $IPF 180 allow udp from any to any 53 out $IPF 185 allow tcp from any to any 53 out # HTTP $IPF 300 skipto 63000 tcp from any to me http,https setup keep-state $IPF 300 skipto 63000 tcp from any to me http,https setup keep-state # deny and log everything $IPF 500 deny log all from any to any # NAT $IPF 63000 divert natd ip from any to any via $jail_if out $IPF 63000 divert natd ip from any to any via $jail_if in but when i create a jail as: # ezjail-admin create -f continental -c zfs node 10.6.6.7 /usr/jails/node/. /usr/jails/node/./etc /usr/jails/node/./etc/resolv.conf /usr/jails/node/./etc/ezjail.flavour.continental /usr/jails/node/./etc/rc.d /usr/jails/node/./etc/rc.conf 4 blocks find: /usr/jails/node/pkg/: No such file or directory Warning: IP 10.6.6.7 not configured on a local interface. Warning: Some services already seem to be listening on all IP, (including 10.6.6.7) This may cause some confusion, here they are: root syslogd 1203 6 udp6 *:514 *:* root syslogd 1203 7 udp4 *:514 *:* i get these warning and then when i go into the jail environment, i am unable to install any ports. any advice much appreciated.

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  • Why isn't this rewrite rule (nginx) applied? (trying to setup Wordpress multisite)

    - by Brian Park
    Hi, I'm trying to setup Wordpress multisite (subfolder structure) with nginx, but having a problem with this rewrite rule. Below is the Apache's .htaccess, which I have to translate into nginx configuration. RewriteEngine On RewriteBase /blogs/ RewriteRule ^index\.php$ - [L] # uploaded files RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L] # add a trailing slash to /wp-admin RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L] RewriteCond %{REQUEST_FILENAME} -f [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^ - [L] RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L] RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L] RewriteRule . index.php [L] Below is what I came up with: server { listen 80; server_name example.com; server_name_in_redirect off; expires 1d; access_log /srv/www/example.com/logs/access.log; error_log /srv/www/example.com/logs/error.log; root /srv/www/example.com/public; index index.html; try_files $uri $uri/ /index.html; # rewriting uploaded files rewrite ^/blogs/(.+/)?files/(.+) /blogs/wp-includes/ms-files.php?file=$2 last; # add a trailing slash to /wp-admin rewrite ^/blogs/(.+/)?wp-admin$ /blogs/$1wp-admin/ permanent; if (!-e $request_filename) { rewrite ^/blogs/(.+/)?(wp-(content|admin|includes).*) /blogs/$2 last; rewrite ^/blogs/(.+/)?(.*\.php)$ /blogs/$2 last; } location /blogs/ { index index.php; #try_files $uri $uri/ /blogs/index.php?q=$uri&$args; } location ~ \.php$ { include /etc/nginx/fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /srv/www/example.com/public$fastcgi_script_name; } # static assets location ~* ^.+\.(manifest)$ { access_log /srv/www/example.com/logs/static.log; } location ~* ^.+\.(ico|ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|css|rss|atom|js|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ { # only set expires max IFF the file is a static file and exists if (-f $request_filename) { expires max; access_log /srv/www/example.com/logs/static.log; } } } In the above code, I believe rewrite ^/blogs/(.+/)?(.*\.php)$ /blogs/$2 last; has no effect because when I look at the access_log file, I see the following line: 2010/09/15 01:14:55 [error] 10166#0: *8 "/srv/www/example.com/public/blogs/test/index.php" is not found (2: No such file or directory), request: "GET /blogs/test/ HTTP/1.1" (Here, 'test' is the second blog created using multisite feature) What I'm expecting is that /blogs/test/index.php gets rewritten to /blogs/index.php, but it doesn't seem to do that... Am I overlooking something obvious? Thanks!

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  • Recover harddrive data

    - by gameshints
    I have a dell laptop that recently "died" (It would get the blue screen of death upon starting) and the hard drive would make a weird cyclic clicking noises. I wanted to see if I could use some tools on my linux machine to recover the data, so I plugged it into there. If I run "fdisk" I get: Disk /dev/sdb: 20.0 GB, 20003880960 bytes 64 heads, 32 sectors/track, 19077 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Disk identifier: 0x64651a0a Disk /dev/sdb doesn't contain a valid partition table Fine, the partition table is messed up. However if I run "testdisk" in attempt to fix the table, it freezes at this point, making the same cyclical clicking noises: Disk /dev/sdb - 20 GB / 18 GiB - CHS 19078 64 32 Analyse cylinder 158/19077: 00% I don't really care about the hard drive working again, and just the data, so I ran "gpart" to figure out where the partitions used to be. I got this: dev(/dev/sdb) mss(512) chs(19077/64/32)(LBA) #s(39069696) size(19077mb) * Warning: strange partition table magic 0x2A55. Primary partition(1) type: 222(0xDE)(UNKNOWN) size: 15mb #s(31429) s(63-31491) chs: (0/1/1)-(3/126/63)d (0/1/32)-(15/24/4)r hex: 00 01 01 00 DE 7E 3F 03 3F 00 00 00 C5 7A 00 00 Primary partition(2) type: 007(0x07)(OS/2 HPFS, NTFS, QNX or Advanced UNIX) (BOOT) size: 19021mb #s(38956987) s(31492-38988478) chs: (4/0/1)-(895/126/63)d (15/24/5)-(19037/21/31)r hex: 80 00 01 04 07 7E FF 7F 04 7B 00 00 BB 6F 52 02 So I tried to mount just to the old NTFS partition, but got an error: sudo mount -o loop,ro,offset=16123904 -t ntfs /dev/sdb /mnt/usb NTFS signature is missing. Ugh. Okay. But then I tried to get a raw data dump by running dd if=/dev/sdb of=/home/erik/brokenhd skip=31492 count=38956987 But the file got up to 59885568 bytes, and made the same cyclical clicking noises. Obviously there is a bad sector, but I don't know what to do about it! The data is still there... if I view that 57MB file in textpad... I can see raw data from files. How can I get my data back? Thanks for any suggestions, Solution: I was able to recover about 90% of my data: Froze harddrive in freezer Used Ddrescue to make a copy of the drive Since Ddrescue wasn't able to get enough of my drive to use testdisk to recover my partitions/file system, I ended up using photorec to recover most of my files

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  • php-fpm or nginx: bad gateway

    - by John Tate
    I'm getting a bad gateway error all the sudden for a site. I didn't change the configuration for the site, I just added a new server config where I put them under /etc/nginx/servers and it stopped working. The new server works, and there is no conflict between the php-fpm listen addresses. server { listen 80; server_name obfuscated.onion; location = / { root /var/www/sites/obfuse; index index.php; } location / { root /var/www/sites/obfuse; index index.php; if (!-f $request_filename) { rewrite ^(.*)$ /index.php?q=$1 last; break; } if (!-d $request_filename) { rewrite ^(.*)$ /index.php?q=$1 last; break; } } error_page 404 /index.php; location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico)$ { root /var/www/sites/obfuse; access_log off; expires 30d; } location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /var/www/sites/obfuse$fastcgi_script_name; fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param PATH_INFO $fastcgi_script_name; include fastcgi_params; } } There is nothing unusual in php-fpm's log even when I raised the level to debug. [24-Jun-2013 09:10:37.357943] DEBUG: pid 6756, fpm_scoreboard_init_main(), line 40: got clock tick '100' [24-Jun-2013 09:10:37.358950] DEBUG: pid 6756, fpm_event_init_main(), line 333: event module is kqueue and 1 fds have been reserved [24-Jun-2013 09:10:37.358978] NOTICE: pid 6756, fpm_init(), line 83: fpm is running, pid 6756 [24-Jun-2013 09:10:37.359009] DEBUG: pid 6756, main(), line 1832: Sending "1" (OK) to parent via fd=5 [24-Jun-2013 09:10:37.389215] DEBUG: pid 6756, fpm_children_make(), line 421: [pool cyruserv] child 22288 started [24-Jun-2013 09:10:37.391343] DEBUG: pid 6756, fpm_children_make(), line 421: [pool cyruserv] child 21911 started [24-Jun-2013 09:10:37.391914] DEBUG: pid 6756, fpm_event_loop(), line 362: 5776 bytes have been reserved in SHM [24-Jun-2013 09:10:37.391941] NOTICE: pid 6756, fpm_event_loop(), line 363: ready to handle connections [24-Jun-2013 09:10:38.393048] DEBUG: pid 6756, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool cyruserv] currently 0 active children, 2 spare children, 2 running children. Spawning rate 1 [24-Jun-2013 09:10:39.403032] DEBUG: pid 6756, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool cyruserv] currently 0 active children, 2 spare children, 2 running children. Spawning rate 1 [24-Jun-2013 09:10:40.413070] DEBUG: pid 6756, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool cyruserv] currently 0 active children, 2 spare children, 2 running children. Spawning rate 1 I don't know why this has started happening, but the logs are not telling me anything. Please ask for more information than this, you'll probably need it.

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  • Apache Alias subfolder and starting with dot

    - by MauricioOtta
    I have a multi purpose server running ArchLinux that currently serves multiple virtual hosts from /var/www/domains/EXAMPLE.COM/html /var/www/domains/EXAMPLE2.COM/html I deploy those websites (mostly using Kohana framework) using a Jenkins job by checking out the project, removes the .git folder and ssh-copy the tar.gz to /var/www/domains/ on the server and untars it. Since I don't want to have to re-install phpMyAdmin after each deploy, I decided to use an alias. I would like the alias to be something like /.tools/phpMyAdmin/ so I could have more "tools" later if I wanted to. I have tried just changing the default httpd-phpmyadmin.conf that was installed by following the official WIKI: https://wiki.archlinux.org/index.php/Phpmyadmin Alias /.tools/phpMyAdmin/ "/usr/share/webapps/phpMyAdmin" <Directory "/usr/share/webapps/phpMyAdmin"> AllowOverride All Options FollowSymlinks Order allow,deny Allow from all php_admin_value open_basedir "/var/www/:/tmp/:/usr/share/webapps/:/etc/webapps:/usr/share/pear/" </Directory> Changing only that, doesn't seem to work with my current setup on the server, and apache forwards the request to the framework which 404s (as there's no route to handle /.tools/phpAdmin). I have Mass Virtual hosting enable and setup like this: # # Use name-based virtual hosting. # NameVirtualHost *:8000 # get the server name from the Host: header UseCanonicalName On # splittable logs LogFormat "%{Host}i %h %l %u %t \"%r\" %s %b" vcommon CustomLog logs/access_log vcommon <Directory /var/www/domains> # ExecCGI is needed here because we can't force # CGI execution in the way that ScriptAlias does Options FollowSymLinks ExecCGI AllowOverride All Order allow,deny Allow from all </Directory> RewriteEngine On # a ServerName derived from a Host: header may be any case at all RewriteMap lowercase int:tolower ## deal with normal documents first: # allow Alias /icons/ to work - repeat for other aliases RewriteCond %{REQUEST_URI} !^/icons/ # allow CGIs to work RewriteCond %{REQUEST_URI} !^/cgi-bin/ # do the magic RewriteCond %{SERVER_NAME} ^(www\.|)(.*) RewriteRule ^/(.*)$ /var/www/domains/${lowercase:%2}/html/$1 ## and now deal with CGIs - we have to force a MIME type RewriteCond %{REQUEST_URI} ^/cgi-bin/ RewriteRule ^/(.*)$ /var/www/domains/${lowercase:%{SERVER_NAME}}/cgi-bin/$1 [T=application/x-httpd-cgi] There is also nginx running on this server on port 80 as a reverse proxy for Apache: location ~ \.php$ { proxy_pass http://127.0.0.1:8000; } Everything else was setup by following the official WIKI so I don't think those would cause trouble. Do I need to have the alias for phpMyAdmin setup along the mass virtual hosting or can it be in a separate include file for that alias to work?

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  • High load on X3220 Quad Core Linux Apache server

    - by John Templar
    I'm seriously in need of help. My sites are now nearly impossible to use because of massive loads on my server. I'm already a month late on my mortgage and this really isn't helping my situation. I've been working on fixing this intermittent load problem for months (never this bad). I'm suspecting some kind of attack since I'm under DDOS attack a lot! I've been trying to figure out what is causing the load but I'm afraid I just don't have the experience or knowledge to understand all the data I've been looking at. I don't even know where to begin or how to test for the large array of attacks out there. Here's some data you might find useful... Server: Xeon X3220 Quad Core 2.4 GHz - Linux, FreeBSD 500 GB HD and 8 Gig of Ram. Runs Centos release 5.7 Server Version: Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 mod_qos/9.74 Warning: All sites are softcore adult sites - mostly fantasy art like elves and amazons. 1) Sites may run fine for weeks or just days at less than 10 load then start jumping to 40-80 load - no idea why. Same sites, same mods, same amount of traffic - just WHAM! 2) I get an email almost every day that says: "Large Number of Failed Login Attempts from IP (different each time)". My webhost (who almost never helps me) told me it was a udp flood or something. 3) I've changed the port for MySQL from the default. If I ever put it back to the default - I get Loads of over 100 from what must be a constant mysql port flood. 4) I've reconfigured MYSQL. Link: http://www.deadlyamazons.com/logs/mycnf.txt 5) I have 3 Joomla Jomsocial networks. I've spent a couple weeks turning all the mods/plugins off, waiting a day and then turning them back on the next day or later if there isn't any change (there hasn't been). For example, on Thursday I'll turn off videos, on Friday I'll turn off chat.. etc and nothing changes the load appreciably. 6) Joomla info: All SEF turned off - sh404sef completely disabled and removed. Components: Joomla 1.5.22, Jomsocial 2.0.5, Kunena 1/31/2011, HWDMediashare 11/22/2010 and JBolo Chat 2.7.3, Comet Chat or Envolve Chat. Page Compression is on, Cache is on 15 mins. Please click on this forum to see links to all my reports: http://forum.joomla.org/viewtopic.php?f=433&t=706035&p=2777500#p2777500 Any help would be highly appreciated.

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  • Nginx Proxying to Multiple IP Addresses for CMS' Website Preview

    - by Matthew Borgman
    First-time poster, so bear with me. I'm relatively new to Nginx, but have managed to figure out what I've needed... until now. Nginx v1.0.15 is proxying to PHP-FPM v.5.3.10, which is listening at http://127.0.0.1:9000. [Knock on wood] everything has been running smoothly in terms of hosting our CMS and many websites. Now, we've developed our CMS and configured Nginx such that each supported website has a preview URL (e.g. http://[WebsiteID].ourcms.com/) where the site can be, you guessed it, previewed in those situations where DNS doesn't yet resolve to our server, etc. Specifically, we use Nginx's Map module (http://wiki.nginx.org/HttpMapModule) and a regular expression in the server_name of the CMS' server{ } block to 1) lookup a website's primary domain name from its preview URL and then 2) forward the request to the "matched" primary domain. The corresponding Nginx configuration: map $host $h { 123.ourcms.com www.example1.com; 456.ourcms.com www.example2.com; 789.ourcms.com www.example3.com; } and server { listen [OurCMSIPAddress]:80; listen [OurCMSIPAddress]:443 ssl; root /var/www/ourcms.com; server_name ~^(.*)\.ourcms\.com$; ssl_certificate /etc/nginx/conf.d/ourcms.com.chained.crt; ssl_certificate_key /etc/nginx/conf.d/ourcms.com.key; location / { proxy_pass http://127.0.0.1/; proxy_set_header Host $h; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } (Note: I do realize that the regex in the server_name should be "tighter" for security reasons and match only the format of the website ID (i.e. a UUID in our case).) This configuration works for 99% of our sites... except those that have a dedicated IP address for an installed SSL certificate. A "502 Bad Gateway" is returned for these and I'm unsure as to why. This is how I think the current configuration works for any requests that match the regex (e.g. http://123.ourcms.com/): Nginx looks up the website's primary domain from the mapping, and as a result of the proxy_pass http://127.0.0.1 directive, passes the request back to Nginx itself, which since the proxied request has a hostname corresponding to the website's primary domain name, via the proxy_set_header Host $h directive, Nginx handles the request as if it was as direct request for that hostname. Please correct me if I'm wrong in this understanding. Should I be proxying to those website's dedicated IP addresses? I tried this, but it didn't seem to work? Is there a setting in the Proxy module that I'm missing? Thanks for the help. MB

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  • Impact of the L3 cache on performance - worth a dual-processor system?

    - by Dan Nissenbaum
    I will be purchasing a new high-end system, and I would like to have a better sense of whether a dual-processor Xeon system (I am looking at the new, high-end Xeon E5-2687W) might, realistically, provide a noticeable performance improvement due to the doubling of the L3 cache (20 MB per CPU). (This is in addition to the occasional added advantage due to the doubling of cores and RAM.) My usage scenario is, roughly, that I have many background applications running at any time - 3 or 4 data compression/backup applications, a low-impact web server, one or two virtual machines at any given time (usually fairly idle), and perhaps 20 utility programs that utilize a noticeable (but small) portion of the CPU cores. In total, when I am not actively using the computer, about 25% of the total CPU power is utilized in my current i7-970 6-core (12 thread) system. When I am doing routine work, the CPU utilization often exceeds 50%, and occasionally hits 75%-80%. The Xeon E5-2687W is not only a second-generation i7 (so should improve performance for that reason), but also has 8 cores (16 threads), rather than 6 cores. For this reason, I expect to run into the 75% CPU range even less frequently. Nonetheless, the ability to double the cores and the RAM is a consideration. However, in the end, I believe this decision comes down to whether the doubling of the L3 cache will provide a noticeable improvement. There are many benchmarks, and a lot of discussion, regarding CPU power. However, I find very little discussion of L3 cache utilization, and how increases in the L3 cache (such as doubling it with dual processors) affect performance. For example: If there are only two processes running, but each benefits from a large L3 cache (such as might be the case for background processes that frequently scan the file system), perhaps the overall system performance might noticeably improve with dual CPU's - even if only a single core is active on each CPU - due to each process having double the effective L3 cache. I am hoping that someone has a sense of the benefits of increasing (or doubling) the L3 cache size. Note: the CPU I am considering (the Xeon E5-2687W) has 20 MB L3 cache, so a system with dual CPU's would have 40 MB L3 cache.

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  • nginx can't see MySQL

    - by user135235
    I have a fully working Joomla 2.5.6 install driven by a local MySQL server, but I'd like to test nginx to see if it's a faster web serving experience than Apache. \ PHP 5.4.6 (PHP54w) \ CentOS 6.2 \ Joomla 2.5.6 \ PHP54w-fpm.i386 (FastCGI process manager) \ php -m shows: mysql & mysqli modules loaded Nginx seems to have installed fine via yum, it can process a PHP-info file via FastCGI perfectly OK (http://37.128.190.241/php.php) but when I stop Apache, start nginx instead and visit my site I get: "Database connection error (1): The MySQL adapter 'mysqli' is not available." I've tried adjusting my Joomla configuration.php to use mysql instead of mysqli but I get the same basic error, only this time "Database connection error (1): The MySQL adapter 'mysql' is not available" of course! Can anyone think what the problem might be please? I did try explicitly setting extension = mysqli.so and extension = mysql.so in my php.ini to try and force the issue (despite php -m showing they were both successfully loaded anyway) - no difference. I have a pretty standard nginx default.conf: server { listen 80; server_name www.MYDOMAIN.com; server_name_in_redirect off; access_log /var/log/nginx/localhost.access_log main; error_log /var/log/nginx/localhost.error_log info; root /var/www/html/MYROOT_DIR; index index.php index.html index.htm default.html default.htm; # Support Clean (aka Search Engine Friendly) URLs location / { try_files $uri $uri/ /index.php?q=$uri&$args; } # deny running scripts inside writable directories location ~* /(images|cache|media|logs|tmp)/.*\.(php|pl|py|jsp|asp|sh|cgi)$ { return 403; error_page 403 /403_error.html; } location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include /etc/nginx/fastcgi.conf; } # caching of files location ~* \.(ico|pdf|flv)$ { expires 1y; } location ~* \.(js|css|png|jpg|jpeg|gif|swf|xml|txt)$ { expires 14d; } } Snip of output from phpinfo under nginx: Server API FPM/FastCGI Virtual Directory Support disabled Configuration File (php.ini) Path /etc Loaded Configuration File /etc/php.ini Scan this dir for additional .ini files /etc/php.d Additional .ini files parsed /etc/php.d/curl.ini, /etc/php.d/fileinfo.ini, /etc/php.d/json.ini, /etc/php.d/phar.ini, /etc/php.d/zip.ini Snip of output from phpinfo under Apache: Server API Apache 2.0 Handler Virtual Directory Support disabled Configuration File (php.ini) Path /etc Loaded Configuration File /etc/php.ini Scan this dir for additional .ini files /etc/php.d Additional .ini files parsed /etc/php.d/curl.ini, /etc/php.d/fileinfo.ini, /etc/php.d/json.ini, /etc/php.d/mysql.ini, /etc/php.d/mysqli.ini, /etc/php.d/pdo.ini, /etc/php.d/pdo_mysql.ini, /etc/php.d/pdo_sqlite.ini, /etc/php.d/phar.ini, /etc/php.d/sqlite3.ini, /etc/php.d/zip.ini Seems that with Apache, PHP is loading substantially more additional .ini files, including ones relating to mysql (mysql.ini, mysqli.ini, pdo_mysql.ini) than nginx. Any ideas how I get nginix to also call these additional .ini's ? Thanks in advance, Steve

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  • Old CRT screen's high resolution doesn't work anymore on windows 7

    - by Mixxiphoid
    One year ago I decided to switch from Windows XP to Windows 7. I had a 17" CRT monitor with a screen resolution of 1600x1200 which worked fine on Windows XP. While installing Windows 7 everything went well until Windows 7 was going to install the video card its driver. Windows 7 puts the screen to its recommended resolution and my screen became black. I waited a few minutes to be sure the installation was finished. I turned off the computer by hand and restarted the computer on a resolution of 800x640. When windows 7 was done installing I went to screen resolutions and the resolution of 1600x1200 was on the top of the list with '(recommended)' next to it. I tried putting it on 1600x1200 but again my screen went black. I installed all windows 7 updates including the video card driver from the NVidia site (NOT from Windows 7). I tried about everything to make it work on 1600x1200 but with no succes. The highest resolution I got with the crt monitor was 1280x1024. I had a TFT screen which had 1280x1024 as max resolution and had better colors, so I used that one till today. My video card is 9600GT and my power supply is beyond sufficient. I even tried to install the driver I had on XP to see if it worked, but no results. I tried classic mode on windows 7, changed the dpi, the frequentie and the monitor settings, but nothing worked. I really like a vertical resolution of 1200, but it seems today I'm bound to all those standard monitors with a resolution of 1980x1024... Can anybody explain to me what the cause is that it worked on Windows XP but not on Windows 7? And maybe a solution to the problem (I actually gave up on getting it fixed...) Thanks a lot in advance. SOLUTION I downloaded the according monitor driver and installed it. Next I rebooted my computer on low resolution (800x640) and connected the CRT monitor. When Windows 7 booted successfully I went to computer management and 'update the driver' of my monitor. I manually selected 'Generic PnP monitor' and made that one active. I want to advanced settings at 'Screen resolution' and selected the mode '1600x1200 (32-bit) 80 Hertz (95 Hertz did not work). Now I had my resolution on 1600x1200. I repeated the earlier step to select the original monitor again instead of the Generic monitor. Quite a way to solve this problem, but it worked! Thanks a lot you all.

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  • WordPress 3.5 Multisite and nginx siteurl issues

    - by Florin Gogianu
    I'm setting up multisite on localhost in subdirectories. The problem is that when I'm trying to access the dashboard of a site I just created ( localhost/wptest/site/wp-admin ) I get "This webpage has a redirect loop" and when I try to access the actual website ( localhost/wptest/site ) the page loads but without assets, such as css. When I access the network dashboard, or the primary site dashboard on localhost/wptest everything is just fine. Also when I edit the permalink of the second site in the network dashboard, to be like this: localhost/site it also runs fine. How to make it work with the default permalink structure localhost/wptest/site? The wordpress files are in /usr/share/html/wptest The wp-config.php is as follows: define('WP_ALLOW_MULTISITE', true); define('MULTISITE', true); define('SUBDOMAIN_INSTALL', false); define('DOMAIN_CURRENT_SITE', 'localhost'); define('PATH_CURRENT_SITE', '/wptest/'); define('SITE_ID_CURRENT_SITE', 1); define('BLOG_ID_CURRENT_SITE', 1); And the server block / virtual host is like this: server { ##DM - uncomment following line for domain mapping listen 80 default_server; #server_name example.com *.example.com ; ##DM - uncomment following line for domain mapping #server_name_in_redirect off; access_log /var/log/nginx/example.com.access.log; error_log /var/log/nginx/example.com.error.log; root /usr/share/nginx/html/wptest; index index.html index.htm index.php; if (!-e $request_filename) { rewrite /wp-admin$ $scheme://$host$uri/ permanent; rewrite ^(/[^/]+)?(/wp-.*) $2 last; rewrite ^(/[^/]+)?(/.*\.php) $2 last; } location / { try_files $uri $uri/ /index.php?$args ; } location ~ \.php$ { try_files $uri /index.php; include fastcgi_params; fastcgi_pass unix:/var/run/php5-fpm.sock; } location ~* ^.+\.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|rss|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ { access_log off; log_not_found off; expires max; } location = /robots.txt { access_log off; log_not_found off; } location ~ /\. { deny all; access_log off; log_not_found off; } } And finally here's an error log: 2013/06/29 08:05:37 [error] 4056#0: *52 rewrite or internal redirection cycle while internally redirecting to "/index.php", client: 127.0.0.1, server: example.com, request: "GET /nginx HTTP/1.1", host: "localhost"

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  • Can't save screen resolution setting.

    - by Searock
    Hi, My screen resolution in windows and previous version of Ubuntu (9.04) was 1152 x 864. But in Ubuntu 10.04 it gives me an option of 1024 x 786 and 1360 x 786. I have some how managed to add 1152x684 resolution by using xrandr command. searock@searock-desktop:~$ cvt 1152 864 1152x864 59.96 Hz (CVT 1.00M3) hsync: 53.78 kHz; pclk: 81.75 MHz Modeline "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync searock@searock-desktop:~$ xrandr --newmode "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync searock@searock-desktop:~$ xrandr --addmode S-video 1152x864 xrandr: cannot find output "S-video" searock@searock-desktop:~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1360x768 59.8 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9 59.9 1152x864_60.00 (0x124) 81.0MHz h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.3KHz v: height 864 start 867 end 871 total 897 clock 59.4Hz searock@searock-desktop:~$ xrandr --addmode VGA1 1152x864_60.00 But the problem is when ever I restart my computer I get this message. Could not apply the stored configuration for the monitors. Could not find a suitable configuration of screens. And then it comes back to 1024 x 786 My graphic card details : Intel(R) 82945G Express Chipset Family. Is there any way I can fix this once for all ? Thanks. Edit 1 : rumtscho has suggested me to modify xorg.conf file. But I am not sure what HorizSync means? is it Horizontal frequency ? My monitor model is Acer v173. Here's my specification. So what should be HorizSync and VertRefresh ? Edit 2 : I have edited my Xorg.conf file as follows : Section "Monitor" Identifier "Configured Monitor" HorizSync 30-80 VertRefresh 55-75 EndSection then I added the resolution and restarted my computer and still I am facing the same problem. Is there something that I am missing? Edit 3 : For now I have edited /etc/gdm/Init/Default(gdm startup scripts) to include following xrandr commands, just below line initctl -q emit login-session-start DISPLAY_MANAGER=gdm xrandr --newmode "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync xrandr --addmode VGA1 1152x864_60.00<br/> xrandr -s 1152x864_60.00 This has solved my problem, but this commands have increased my computer's boot time. I think I will have to edit xorg file properly. Edit 4 : Instead of adding this files to gdm startup scripts I have created a shell script and added it to startup (System - Preference - Startup Applications) #!/bin/bash xrandr --newmode "1152x864_60.00" 81.75 1152 1216 1336 1520 864 867 871 897 -hsync +vsync xrandr --addmode VGA1 1152x864_60.00 xrandr -s 1152x864_60.00 And don't forget to add execution rights. (Right Click - Properties - Permission - Allow executing file as program)

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  • Why can't I connect to remote Microsoft SQL Server through SSH tunnel?

    - by Alexander
    I have at home a D-Link DIR-615 C1 router with DD-WRT. I set up the SSH server on the router, and log on through an SSH2-RSA passphrase-protected key. That router is the gateway between the local network and the internet. One of the computers on that network has Microsoft SQL Server 2008 installed, with TCP/IP protocol enabled through port 1433. I've set up port forwarding on the router, so that remote connections are possible and are, in fact, working (some developers log on remotely without problems). I am part of another network, that has internet access through a proxy server, which only has ports 80 and 443 opened. I can't connect to that MSSQL server on that remote server because 1433 port is closed on this network. I connected (using Putty) through 443 port to my router's SSH server, and set up 2 tunnels. One is for RDP (3389), and it's working. The other is for 1433 port, to connect to the server. I can't connect through the SSH tunnel to the MS SQL Server, neither through telnet, or through GUI clients. Am I missing something? Additional details: on connect, I get this error from SQL Server Management Studio: TITLE: Connect to Server Cannot connect to localhost:14330. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 3) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=3&LinkId=20476 BUTTONS: OK The tunnel is configured like this: L14330 192.168.0.103:1433 192.168.0.103 is the permanent address of the SQL Server on the LAN. I also successfully forwarded TCP traffic of 3389 port to that IP, so tunneling is working to that IP address. When connecting without tunnel, through Microsoft SQL Server Management Studio, using the same method the connection establishes. Too bad my proxy doesn't allow 1433 port traffic, I wouldn't have this headache.

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  • iptables : how to correctly allow incoming and outgoing traffic for certain ports?

    - by Rubytastic
    Im trying to get incoming and outgoing traffic to be enabled on specific ports, because I block everything at the end of the iptables rules. INPUT and FORWARD reject. What would be the appropiate way to open certain ports for all traffic incoming and outgoing? From docs I found below but one has to really define both lines? iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT I try to open ports for xmpp service and some other deamons running on server. Rules: *filter # Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0 -A INPUT -i lo -j ACCEPT -A INPUT -d 127.0.0.0/8 -j REJECT # Accept all established inbound connections -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # Allow all outbound traffic - you can modify this to only allow certain traffic -A OUTPUT -j ACCEPT # Allow HTTP # Prevent DDOS attacks (http://blog.bodhizazen.net/linux/prevent-dos-with-iptables/) # Disallow HTTPS -A INPUT -p tcp --dport 80 -m state --state NEW -m limit --limit 50/minute --limit-burst 200 -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -m limit --limit 50/second --limit-burst 50 -j ACCEPT -A INPUT -p tcp --dport 443 -j DROP # Allow SSH connections # The -dport number should be the same port number you set in sshd_config -A INPUT -p tcp -s <myip> --dport ssh -j ACCEPT -A INPUT -p tcp -s <myip> --dport 5984 -j ACCEPT -A INPUT -p tcp --dport ssh -j REJECT # Attempt to block portscans # Anyone who tried to portscan us is locked out for an entire day. -A INPUT -m recent --name portscan --rcheck --seconds 86400 -j DROP -A FORWARD -m recent --name portscan --rcheck --seconds 86400 -j DROP # Once the day has passed, remove them from the portscan list -A INPUT -m recent --name portscan --remove -A FORWARD -m recent --name portscan --remove # These rules add scanners to the portscan list, and log the attempt. -A INPUT -p tcp -m tcp --dport 139 -m recent --name portscan --set -j LOG --log-prefix "Portscan:" -A INPUT -p tcp -m tcp --dport 139 -m recent --name portscan --set -j DROP -A FORWARD -p tcp -m tcp --dport 139 -m recent --name portscan --set -j LOG --log-prefix "Portscan:" -A FORWARD -p tcp -m tcp --dport 139 -m recent --name portscan --set -j DROP # Stop smurf attacks -A INPUT -p icmp -m icmp --icmp-type address-mask-request -j DROP -A INPUT -p icmp -m icmp --icmp-type timestamp-request -j DROP -A INPUT -p icmp -m icmp -j DROP # Drop excessive RST packets to avoid smurf attacks -A INPUT -p tcp -m tcp --tcp-flags RST RST -m limit --limit 2/second --limit-burst 2 -j ACCEPT # Don't allow pings through -A INPUT -p icmp -m icmp --icmp-type 8 -j DROP # Log iptables denied calls -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 # Reject all other inbound - default deny unless explicitly allowed policy -A INPUT -j REJECT -A FORWARD -j REJECT COMMIT

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  • Cannot Send Item error in Outlook - permissions to registry?

    - by Tim Alexander
    The issue I am trying to solve is to do with users getting a Cannot Send Item error in Outlook 2007 connecting to Exchange 2007. Basically if there is an image in the email (either one they have pasted in or one from another email in the chain) they get a "Cannot Send Item" error. Initially thought it was a citrix issue but users get it when they RDP to a server as well. Changing the message to Rich Text works 80% of the time but I do not think this is a solution but more of a temporary workaround. After some troubleshooting we found that the error can be fixed by adding the user as a member of the local power users group. of course this is not really a fix. My thoughts were that the ability of a power user to add/remove software may give them more access to the registry which might allow them to get round a restriction that is in place for a normal user. I have tried going through a procmon but the wealth of information is confusing. It initially looked like it may be an Outlook 2007 email security setting but this does not change between power user and normal user (set to 1 in the registry, "Use the security setting from Outlook Security Settings Public Folders"). I am struggling to fine tune my troubleshooting to work out exactly what is blocking it. Has anyone had an experience with an error similar to this? Or are there any tips for trying to track down issues via procmon as I must admit my approach seems somewhat lacking :) EDIT: So I have trawled through the two logs we have from process monitor (one as a power user and one a normal user). annoyingly I can find no obvious difference where something is denied access. There are more access denied events in the normal user log but these are quickly followed by sucessful entries to the same path fractions of a second later. The only thing that does stand out is an access denied to HKCR.html. This does not even appear in the power user version of the log. From what I understand this helps determine the default browser which ties in nicely with the fact that 9 out of 10 times you can send the message as Rich Text. EDIT: Looks like KB2509470 was causing the issue. Not really sure why but when I can work out what it does and why it causes the problem will post here unless anyone beats me to it!

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  • Why can't I connect to remote Microsoft SQL Server through SSH tunnel?

    - by Alexander
    I have at home a D-Link DIR-615 C1 router with DD-WRT. I set up the SSH server on the router, and log on through an SSH2-RSA passphrase-protected key. That router is the gateway between the local network and the internet. One of the computers on that network has Microsoft SQL Server 2008 installed, with TCP/IP protocol enabled through port 1433. I've set up port forwarding on the router, so that remote connections are possible and are, in fact, working (some developers log on remotely without problems). I am part of another network, that has internet access through a proxy server, which only has ports 80 and 443 opened. I can't connect to that MSSQL server on that remote server because 1433 port is closed on this network. I connected (using Putty) through 443 port to my router's SSH server, and set up 2 tunnels. One is for RDP (3389), and it's working. The other is for 1433 port, to connect to the server. I can't connect through the SSH tunnel to the MS SQL Server, neither through telnet, or through GUI clients. Am I missing something? Additional details: on connect, I get this error from SQL Server Management Studio: TITLE: Connect to Server Cannot connect to localhost:14330. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 3) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=3&LinkId=20476 BUTTONS: OK The tunnel is configured like this: L14330 192.168.0.103:1433 192.168.0.103 is the permanent address of the SQL Server on the LAN. I also successfully forwarded TCP traffic of 3389 port to that IP, so tunneling is working to that IP address. When connecting without tunnel, through Microsoft SQL Server Management Studio, using the same method the connection establishes. Too bad my proxy doesn't allow 1433 port traffic, I wouldn't have this headache.

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  • POSTFIX bouncing when destination is my domain

    - by ZeC
    I am using provider mail hosting to send emails. On my Webserver I also have Postfix running and configured. Here is my main.cf smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no append_dot_mydomain = yes readme_directory = no smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache myhostname = 2-5-8.bih.net.ba alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = bhcom.info, 2-5-8.bih.net.ba, localhost.bih.net.ba, localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_command = mailbox_size_limit = 10485760 recipient_delimiter = + inet_interfaces = 80.65.85.114 When I try sending email to my hosted domain name, every message gets bounced with this error: Nov 4 20:38:34 2-5-8 postfix/pickup[802]: 1492A3E0C6C: uid=0 from=<[email protected]> Nov 4 20:38:34 2-5-8 postfix/cleanup[988]: 1492A3E0C6C: message-id=<[email protected]> Nov 4 20:38:34 2-5-8 postfix/qmgr[803]: 1492A3E0C6C: from=<[email protected]>, size=348, nrcpt=1 (queue active) Nov 4 20:38:34 2-5-8 postfix/local[990]: 1492A3E0C6C: to=<[email protected]>, relay=local, delay=0.12, delays=0.08/0.01/0/0.04, dsn=5.1.1, status=bounced (unknown user: "info") Nov 4 20:38:34 2-5-8 postfix/cleanup[988]: 28ED53E0C6D: message-id=<[email protected]> Nov 4 20:38:34 2-5-8 postfix/qmgr[803]: 28ED53E0C6D: from=<>, size=2056, nrcpt=1 (queue active) Nov 4 20:38:34 2-5-8 postfix/bounce[991]: 1492A3E0C6C: sender non-delivery notification: 28ED53E0C6D Nov 4 20:38:34 2-5-8 postfix/qmgr[803]: 1492A3E0C6C: removed Nov 4 20:38:34 2-5-8 postfix/local[990]: 28ED53E0C6D: to=<[email protected]>, relay=local, delay=0.06, delays=0.03/0/0/0.02, dsn=5.1.1, status=bounced (unknown user: "razvoj") Nov 4 20:38:34 2-5-8 postfix/qmgr[803]: 28ED53E0C6D: removed However, when I try to @gmail.com, it sends message without problems, and here is log. What might be the issue? Nov 4 20:41:23 2-5-8 postfix/pickup[802]: B2EC63E0C6C: uid=0 from=<[email protected]> Nov 4 20:41:23 2-5-8 postfix/cleanup[1022]: B2EC63E0C6C: message-id=<[email protected]> Nov 4 20:41:23 2-5-8 postfix/qmgr[803]: B2EC63E0C6C: from=<[email protected]>, size=350, nrcpt=1 (queue active) Nov 4 20:41:23 2-5-8 postfix/smtp[1024]: connect to gmail-smtp-in.l.google.com[2a00:1450:4001:c02::1a]:25: Network is unreachable Nov 4 20:41:24 2-5-8 postfix/smtp[1024]: B2EC63E0C6C: to=<[email protected]>, relay=gmail-smtp-in.l.google.com[173.194.70.26]:25, delay=0.97, delays=0.08/0.01/0.27/0.62, dsn=2.0.0, status=sent (250 2.0.0 OK 1352058066 f7si2180442eeo.46) Nov 4 20:41:24 2-5-8 postfix/qmgr[803]: B2EC63E0C6C: removed

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  • unable to access a NAT'ed IP via a VPN on Windows 7

    - by crmpicco
    I connect to a range of servers hosted by one provider via a VPN. I can connect to the VPN fine, however when I then go and try and connect to the server(s) it fails. A NAT'ed IP address that has worked up until today, has stopped working either via SSH/SFTP. As you can see below, if I try and ping the IP then it responds with Destination host unreachable, but, for some reason it says the reply is from 192.168.0.8? If it enter this IP address in my browser, I get nothing. Where is this IP coming from and is there any good reason why I cannot access the IP I am trying to ping? C:\Users\crmpicco>ping 172.26.100.x Pinging 172.26.100.x with 32 bytes of data: Reply from 192.168.0.8: Destination host unreachable. Reply from 192.168.0.8: Destination host unreachable. Reply from 192.168.0.8: Destination host unreachable. Reply from 192.168.0.8: Destination host unreachable. Ping statistics for 172.26.100.x: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), I have the VPN remote host address of 80.75.67.x, which shows me as being connected. But i'm unsure if there is a config issue at the server side or my end that has caused this issue? I have had some recent Win7 (automatic) updates, but it's hard to tell if that's caused this problem. This is my output from arp: C:\Users\cmorton>arp -a Interface: 192.168.0.8 --- 0xe Internet Address Physical Address Type 192.168.0.1 00-18-4d-b9-68-5e dynami 192.168.0.6 00-f4-b9-68-0c-9a dynami 192.168.0.7 08-00-27-f2-9f-d6 dynami 192.168.0.255 ff-ff-ff-ff-ff-ff static 224.0.0.22 01-00-5e-00-00-16 static 224.0.0.251 01-00-5e-00-00-fb static 224.0.0.252 01-00-5e-00-00-fc static 239.255.255.250 01-00-5e-7f-ff-fa static 255.255.255.255 ff-ff-ff-ff-ff-ff static Interface: 192.168.56.1 --- 0x15 Internet Address Physical Address Type 192.168.56.255 ff-ff-ff-ff-ff-ff static 224.0.0.22 01-00-5e-00-00-16 static 224.0.0.251 01-00-5e-00-00-fb static 224.0.0.252 01-00-5e-00-00-fc static 255.255.255.255 ff-ff-ff-ff-ff-ff static

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  • Nginx fastcgi problems with django

    - by wizard
    I'm deploying my first django app. I'm familiar with nginx and fastcgi from deploying php-fpm. I can't get python to recognize the urls. I'm also at a loss on how to debug this further. I'd welcome solutions to this problem and tips on debugging fastcgi problems. Currently I get a 404 page regardless of the url and for some reason a double slash For http://www.site.com/admin/ Page not found (404) Request Method: GET Request URL: http://www.site.com/admin// My urls.py from the debug output - which work in the dev server. Using the URLconf defined in ahrlty.urls, Django tried these URL patterns, in this order: ^listings/ ^admin/ ^accounts/login/$ ^accounts/logout/$ my nginx config server { listen 80; server_name beta.ahrlty.com; access_log /home/ahrlty/ahrlty/logs/access.log; error_log /home/ahrlty/ahrlty/logs/error.log; location /static/ { alias /home/ahrlty/ahrlty/ahrlty/static/; break; } location /media/ { alias /usr/lib/python2.6/dist-packages/django/contrib/admin/media/; break; } location / { include /etc/nginx/fastcgi_params; fastcgi_pass 127.0.0.1:8001; break; } } and my fastcgi_params fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_param REQUEST_URI $request_uri; fastcgi_param DOCUMENT_URI $document_uri; fastcgi_param DOCUMENT_ROOT $document_root; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param GATEWAY_INTERFACE CGI/1.1; fastcgi_param SERVER_SOFTWARE nginx/$nginx_version; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; fastcgi_param PATH_INFO $fastcgi_script_name; # PHP only, required if PHP was built with --enable-force-cgi-redirect fastcgi_param REDIRECT_STATUS 200; And lastly I'm running fastcgi from the commandline with django's manage.py. python manage.py runfcgi method=threaded host=127.0.0.1 port=8080 pidfile=mysite.pid minspare=4 maxspare=30 daemonize=false I'm having a hard time debugging this one. Does anything jump out at anybody?

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  • Nginx + Wordpress Multisite 3.4.2 + subdirectories + static pages and permalinks

    - by UrkoM
    I am trying to setup Wordpress Multisite, using subdirectories, with Nginx, php5-fpm, APC, and Batcache. As many other people, I am getting stuck in the rewrite rules for permalinks. I have followed these two guides, which seem to be as official as you can get: http://evansolomon.me/notes/faster-wordpress-multisite-nginx-batcache/ http://codex.wordpress.org/Nginx#WordPress_Multisite_Subdirectory_rules It is partially working: http://blog.ssis.edu.vn works. http://blog.ssis.edu.vn/umasse/ works. But other permalinks, like these two to a post or to a static page, don't work: http://blog.ssis.edu.vn/umasse/2008/12/12/hello-world-2/ http://blog.ssis.edu.vn/umasse/sample-page/ They either take you to a 404 error, or to some other blog! Here is my configuration: server { listen 80 default_server; server_name blog.ssis.edu.vn; root /var/www; access_log /var/log/nginx/blog-access.log; error_log /var/log/nginx/blog-error.log; location / { index index.php; try_files $uri $uri/ /index.php?$args; } # Add trailing slash to */wp-admin requests. rewrite /wp-admin$ $scheme://$host$uri/ permanent; # Add trailing slash to */username requests rewrite ^/[_0-9a-zA-Z-]+$ $scheme://$host$uri/ permanent; # Directives to send expires headers and turn off 404 error logging. location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ { expires 24h; log_not_found off; } # this prevents hidden files (beginning with a period) from being served location ~ /\. { access_log off; log_not_found off; deny all; } # Pass uploaded files to wp-includes/ms-files.php. rewrite /files/$ /index.php last; if ($uri !~ wp-content/plugins) { rewrite /files/(.+)$ /wp-includes/ms-files.php?file=$1 last; } # Rewrite multisite '.../wp-.*' and '.../*.php'. if (!-e $request_filename) { rewrite ^/[_0-9a-zA-Z-]+(/wp-.*) $1 last; rewrite ^/[_0-9a-zA-Z-]+.*(/wp-admin/.*\.php)$ $1 last; rewrite ^/[_0-9a-zA-Z-]+(/.*\.php)$ $1 last; } location ~ \.php$ { # Forbid PHP on upload dirs if ($uri ~ "uploads") { return 403; } client_max_body_size 25M; 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 /etc/nginx/fastcgi_params; } } Any ideas are welcome! Have I done something wrong? I have disabled Batcache to see if it makes any difference, but still no go.

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  • routing through multiple subinterfaces in debian

    - by Kstro21
    my question is as simple as the title, i have a debian 6 , 2 NICs, 3 different subnets in a single interface, just like this: auto eth0 iface eth0 inet static address 192.168.106.254 netmask 255.255.255.0 auto eth0:0 iface eth0:0 inet static address 172.19.221.81 netmask 255.255.255.248 auto eth0:1 iface eth0:1 inet static address 192.168.254.1 netmask 255.255.255.248 auto eth1 iface eth1 inet static address 172.19.216.3 netmask 255.255.255.0 gateway 172.19.216.13 eth0 is conected to a swith with 3 differents vlans, eth1 is conected to a router. No iptables DROP, so, all traffic is allowed. Now, passing the traffic through eth0 is OK, passing the traffic through eth0:0 is OK, but, passing the traffic through eth0:1 is not working, i can ping the ip address of that sub interface from a pc where this ip is the default gateway, but can't get to servers in the subnet of the eth1 interface, the traffic is not passing, even when i set the iptables to log all the traffic in the FORWARD chain and i can see the traffic there, but, the traffic is not really passing. And the funny is i can do any the other way around, i mean, passing from eth1 to eth0:1, RDP, telnet, ping, etc, doing some work with the iptable, i manage to pass some traffic from eth0:1 to eth1, the iptables look like this: iptables -t nat PREROUTING -d 192.168.254.1/32 -p tcp -m multiport --dports 25,110,5269 -j DNAT --to-destination 172.19.216.1 iptables -t nat PREROUTING -d 192.168.254.1/32 -p udp -m udp --dport 53 -j DNAT --to-destination 172.19.216.9 iptables -t nat PREROUTING -d 192.168.254.1/32 -p tcp -m tcp --dport 21 -j DNAT --to-destination 172.19.216.11 iptables -t nat POSTROUTING -s 172.19.216.0/24 -d 172.19.221.80/29 -j SNAT --to-source 172.19.221.81 iptables -t nat POSTROUTING -s 172.19.216.0/24 -d 192.168.254.0/29 -j SNAT --to-source 192.168.254.1 iptables -t nat POSTROUTING -s 172.19.216.0/24 -o eth0 -j SNAT --to-source 192.168.106.254 dong this is working, but,it is really a headache have to map each port with the server, imagine if i move the service from server, so, now i have doubts: can debian route through multiple subinterfaces?? exist a limit for this?? if not, what i'm doing wrong when i have the same setup with other subnets and it is working ok?? without the iptables rules in the nat, it doesn't work thanks and i hope good comments/answers

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