Search Results

Search found 1178 results on 48 pages for 'roman ivanov'.

Page 9/48 | < Previous Page | 5 6 7 8 9 10 11 12 13 14 15 16  | Next Page >

• How to use Bonjour?

  - by Roman

  First, what exactly Bonjour does (pleas read my guesses written bellow)? Here I found out that Bonjour enables automatic discovery of computers, devices, and services on IP networks. But I thought that it not only "discovers devices on IP network" it also creates an IP network by assigning IP addresses to devices where Bonjour is running. Am I right? And I still miss the essence. Does it work in the following way? First I connect devices (for example laptops) physically so that they potentially can communicate with each other. Then, let say, on some laptops I have Bonjour running and then, as a consequence, these laptops assign IP addresses to them self in automatic way. So, laptops (where Bonjour is running) build an IP network. Does it work in this way? Or may be a computer running Bonjour is not considered as a service and it does not broadcast itself just because Bonjour is running on this computer. I mean that the applications running on the computers need to use Bonjour to broadcast themself. So, it is applications that broadcast themself (not computers) and it is not done automatically (application needs to broadcast themself explicitly). Is it right? How exactly my application can broadcast itself? Can I use command line to register an service (so that all applications using Bonjour knows that a new service appeared)? Further, I would like to have an application which use the IP network created by Bonjour. For that my application needs to know which devices/services are present in the network. In more details, my application needs to have a list of services. Each service in the list should have a name, the IP address where it is running and the port which is used by the application. Can Bonjour provide this information in some way? If it is the case, how exactly it works. How my program can get this information from Bonjour? Can my program read some file created by Bonjour and containing the above mentioned information? Can I use some commands in command line to retrieve this information? I have a special interest in accessing the information about services from files, environment variables or commands in command line. These options seems to me to be the simplest! Since in these case I do not need to use any additional libraries to communicate with Bonjour from a particular programming language. P.S. Pleas ask questions if something is not clear in my question. I will try to formulate my question in a more clear way. P.P.S. I use Windows 7. ADDED: I plan to write my applications in PHP. Every computer should run a Apache web server. And I want to use Bonjour to help computer discover each other (computers are working in a local network).

  Read the article

• Gearman too many processes issue

  - by Roman Newaza

  I use Net_Gearman from PECL, Gearmand 1.1.11 and Gearman Manager. Every time I add background job, I can see new worker listed with no Function, nor Id in Ggearman-Monitor: If I add many messages in the bash loop, after some time it becomes very slow. for i in $(seq 0 9999); do php Client.php && echo $i; done Yesterday, the situation was even worse - I had many error messages in Gearmand log regarding Too many open files and once I added --file-descriptors=49152 as an option and swithched to 1.1.11 from 1.0.6, these errors gone. Here is lsof -p $(cat /var/run/gearman/gearmand.pid) output: COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME gearmand 2020 gearman cwd DIR 8,2 4096 2 / gearmand 2020 gearman rtd DIR 8,2 4096 2 / gearmand 2020 gearman txt REG 8,2 3852472 3672962 /opt/sbin/gearmand gearmand 2020 gearman mem REG 8,2 52120 9961752 /lib/x86_64-linux-gnu/libnss_files-2.15.so gearmand 2020 gearman mem REG 8,2 47680 9961756 /lib/x86_64-linux-gnu/libnss_nis-2.15.so gearmand 2020 gearman mem REG 8,2 97248 9961768 /lib/x86_64-linux-gnu/libnsl-2.15.so gearmand 2020 gearman mem REG 8,2 35680 9961750 /lib/x86_64-linux-gnu/libnss_compat-2.15.so gearmand 2020 gearman mem REG 8,2 92720 9964871 /lib/x86_64-linux-gnu/libz.so.1.2.3.4 gearmand 2020 gearman mem REG 8,2 109288 11014600 /usr/lib/x86_64-linux-gnu/libsasl2.so.2.0.25 gearmand 2020 gearman mem REG 8,2 1030512 9961759 /lib/x86_64-linux-gnu/libm-2.15.so gearmand 2020 gearman mem REG 8,2 1930616 9964982 /lib/x86_64-linux-gnu/libcrypto.so.1.0.0 gearmand 2020 gearman mem REG 8,2 382896 9964977 /lib/x86_64-linux-gnu/libssl.so.1.0.0 gearmand 2020 gearman mem REG 8,2 1815224 9961748 /lib/x86_64-linux-gnu/libc-2.15.so gearmand 2020 gearman mem REG 8,2 88384 9964865 /lib/x86_64-linux-gnu/libgcc_s.so.1 gearmand 2020 gearman mem REG 8,2 962656 11014043 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.16 gearmand 2020 gearman mem REG 8,2 199600 11016157 /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0 gearmand 2020 gearman mem REG 8,2 31752 9961755 /lib/x86_64-linux-gnu/librt-2.15.so gearmand 2020 gearman mem REG 8,2 14768 9961763 /lib/x86_64-linux-gnu/libdl-2.15.so gearmand 2020 gearman mem REG 8,2 414280 9183971 /usr/lib/libboost_program_options.so.1.46.1 gearmand 2020 gearman mem REG 8,2 283832 9183656 /usr/lib/libevent-2.0.so.5.1.4 gearmand 2020 gearman mem REG 8,2 664504 11014432 /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6 gearmand 2020 gearman mem REG 8,2 135366 9961757 /lib/x86_64-linux-gnu/libpthread-2.15.so gearmand 2020 gearman mem REG 8,2 3534240 9175810 /usr/lib/libmysqlclient.so.18.1.0 gearmand 2020 gearman mem REG 8,2 149280 9961760 /lib/x86_64-linux-gnu/ld-2.15.so gearmand 2020 gearman 0u CHR 1,3 0t0 1029 /dev/null gearmand 2020 gearman 1u CHR 1,3 0t0 1029 /dev/null gearmand 2020 gearman 2u CHR 1,3 0t0 1029 /dev/null gearmand 2020 gearman 3w REG 8,2 9381897 3409366 /var/log/gearman-job-server/gearman.log gearmand 2020 gearman 4r FIFO 0,8 0t0 38869143 pipe gearmand 2020 gearman 5w FIFO 0,8 0t0 38869143 pipe gearmand 2020 gearman 6u 0000 0,9 0 6826 anon_inode gearmand 2020 gearman 7u unix 0xffff880230fdf500 0t0 38869144 socket gearmand 2020 gearman 8u unix 0xffff880230fdde40 0t0 38869145 socket gearmand 2020 gearman 9u IPv4 38869146 0t0 TCP localhost:4730 (LISTEN) gearmand 2020 gearman 10r FIFO 0,8 0t0 38869147 pipe gearmand 2020 gearman 11w FIFO 0,8 0t0 38869147 pipe gearmand 2020 gearman 12u 0000 0,9 0 6826 anon_inode gearmand 2020 gearman 13u unix 0xffff880230fde4c0 0t0 38869148 socket gearmand 2020 gearman 14u unix 0xffff880230fdeb40 0t0 38869149 socket gearmand 2020 gearman 15r FIFO 0,8 0t0 38869150 pipe gearmand 2020 gearman 16w FIFO 0,8 0t0 38869150 pipe gearmand 2020 gearman 17u 0000 0,9 0 6826 anon_inode gearmand 2020 gearman 18u 0000 0,9 0 6826 anon_inode gearmand 2020 gearman 19u unix 0xffff880230fdb400 0t0 38869151 socket gearmand 2020 gearman 20u unix 0xffff880230fdaa40 0t0 38869152 socket gearmand 2020 gearman 21r FIFO 0,8 0t0 38869153 pipe gearmand 2020 gearman 22w FIFO 0,8 0t0 38869153 pipe gearmand 2020 gearman 23u unix 0xffff880203cfce00 0t0 38868290 socket gearmand 2020 gearman 24u unix 0xffff880203cfdb00 0t0 38868291 socket gearmand 2020 gearman 25r FIFO 0,8 0t0 38868292 pipe gearmand 2020 gearman 26w FIFO 0,8 0t0 38868292 pipe gearmand 2020 gearman 27u 0000 0,9 0 6826 anon_inode gearmand 2020 gearman 28u unix 0xffff880203cf9040 0t0 38868293 socket gearmand 2020 gearman 29u unix 0xffff880203cfaa40 0t0 38868294 socket gearmand 2020 gearman 30r FIFO 0,8 0t0 38868295 pipe gearmand 2020 gearman 31w FIFO 0,8 0t0 38868295 pipe gearmand 2020 gearman 32u IPv4 38868324 0t0 TCP localhost:4730->localhost:57954 (ESTABLISHED) gearmand 2020 gearman 33u IPv4 38868325 0t0 TCP localhost:4730->localhost:57955 (ESTABLISHED) gearmand 2020 gearman 34u IPv4 38901247 0t0 TCP localhost:4730->localhost:38594 (ESTABLISHED) gearmand 2020 gearman 35u IPv4 38868327 0t0 TCP localhost:4730->localhost:57957 (ESTABLISHED) gearmand 2020 gearman 36u IPv4 38867483 0t0 TCP localhost:4730->localhost:57959 (ESTABLISHED) gearmand 2020 gearman 37u IPv4 38867484 0t0 TCP localhost:4730->localhost:57958 (ESTABLISHED) gearmand 2020 gearman 38u IPv4 38901248 0t0 TCP localhost:4730->localhost:38595 (CLOSE_WAIT) gearmand 2020 gearman 39u IPv4 38901249 0t0 TCP localhost:4730->localhost:38597 (ESTABLISHED) gearmand 2020 gearman 40u IPv4 38869201 0t0 TCP localhost:4730->localhost:57979 (ESTABLISHED) gearmand 2020 gearman 41u IPv4 38900437 0t0 TCP localhost:4730->localhost:38599 (ESTABLISHED) gearmand 2020 gearman 42u IPv4 38900438 0t0 TCP localhost:4730->localhost:38602 (ESTABLISHED) gearmand 2020 gearman 43u IPv4 38868375 0t0 TCP localhost:4730->localhost:57987 (ESTABLISHED) gearmand 2020 gearman 44u IPv4 38900468 0t0 TCP localhost:4730->localhost:38606 (CLOSE_WAIT) gearmand 2020 gearman 45u IPv4 38868381 0t0 TCP localhost:4730->localhost:57999 (ESTABLISHED) gearmand 2020 gearman 46u IPv4 38868388 0t0 TCP localhost:4730->localhost:58007 (ESTABLISHED) gearmand 2020 gearman 47u IPv4 38868393 0t0 TCP localhost:4730->localhost:58011 (ESTABLISHED) gearmand 2020 gearman 48u IPv4 38903950 0t0 TCP localhost:4730->localhost:38609 (ESTABLISHED) gearmand 2020 gearman 49u IPv4 38870276 0t0 TCP localhost:4730->localhost:58019 (ESTABLISHED) gearmand 2020 gearman 50u IPv4 38903955 0t0 TCP localhost:4730->localhost:38613 (ESTABLISHED) gearmand 2020 gearman 51u IPv4 38900477 0t0 TCP localhost:4730->localhost:38617 (CLOSE_WAIT) gearmand 2020 gearman 52u IPv4 38867630 0t0 TCP localhost:4730->localhost:58031 (ESTABLISHED) gearmand 2020 gearman 53u IPv4 38867633 0t0 TCP localhost:4730->localhost:58035 (ESTABLISHED) gearmand 2020 gearman 54u IPv4 38867636 0t0 TCP localhost:4730->localhost:58039 (ESTABLISHED) gearmand 2020 gearman 55u IPv4 38900536 0t0 TCP localhost:4730->localhost:38619 (ESTABLISHED) gearmand 2020 gearman 56u IPv4 38868419 0t0 TCP localhost:4730->localhost:58047 (ESTABLISHED) gearmand 2020 gearman 57u IPv4 38869263 0t0 TCP localhost:4730->localhost:58051 (ESTABLISHED) gearmand 2020 gearman 58u IPv4 38900537 0t0 TCP localhost:4730->localhost:38621 (ESTABLISHED) gearmand 2020 gearman 59u IPv4 38869271 0t0 TCP localhost:4730->localhost:58059 (ESTABLISHED) gearmand 2020 gearman 60u IPv4 38900538 0t0 TCP localhost:4730->localhost:38623 (ESTABLISHED) gearmand 2020 gearman 61u IPv4 38870319 0t0 TCP localhost:4730->localhost:58067 (ESTABLISHED) gearmand 2020 gearman 62u IPv4 38900540 0t0 TCP localhost:4730->localhost:38628 (ESTABLISHED) gearmand 2020 gearman 63u IPv4 38869289 0t0 TCP localhost:4730->localhost:58075 (ESTABLISHED) ... gearmand 2020 gearman 2229u IPv4 38903885 0t0 TCP localhost:4730->localhost:38572 (ESTABLISHED) gearmand 2020 gearman 2230u IPv4 38901211 0t0 TCP localhost:4730->localhost:38576 (ESTABLISHED) gearmand 2020 gearman 2234u IPv4 38901237 0t0 TCP localhost:4730->localhost:38588 (ESTABLISHED)

  Read the article

• How to troubleshoot a remote wmi query/access failure?

  - by Roman

  Hi I'm using Powershell to query a remote computer in a domain for a wmi object, eg: "gwmi -computer test -class win32_bios". I get this error message: Value does not fall within the expected range Executing the query local under the same user works fine. It seems to happen on both windows 2003 and also 2008 systems. The user that runs the shell has admin rights on the local and remote server. I checked wmi and dcom permissions as far as I know how to do this, they seem to be the same on a server where it works, and another where it does not. I think it is not a network issue, all ports are open that are needed, and it also happens within the same subnet. When sniffing the traffic we see the following errors: RPC: c/o Alter Cont Resp: Call=0x2 Assoc Grp=0x4E4E Xmit=0x16D0 Recv=0x16D0 Warning: GssAPIMechanism is not found, either caused by not reassembled, conversation off or filtering. And an errormessage from Kerberos: Kerberos: KRB_ERROR - KDC_ERR_BADOPTION (13) The option code in the packet is 0x40830000 Any idea what I should look into?

  Read the article

• Collectd on ubuntu with perl plugin support

  - by Roman

  For days I am struggling with enabling perl plugin support for collectd. I have installed colllectd 5.4.0 on a Aws ubuntu 13.04. Configured compiled. I have even installed libperl-dev. But when i run ./configure from collectd installation , it still says that "perl ....(needs libperl)" Now enabling the perl plugins from collectd.conf didnt help much. In logs i see that : plugin_load: Could not find plugin "perl" in /opt/collectd/lib/collectd and indeed there is not perl.so or whatever in that folder. Can someone help me out with that ?

  Read the article

• Error "fileid changed" when accessing files over NFS

  - by Roman Prikhodchenko

  I have an nfs-kernel-server configured and running on Ubuntu 10.04 Server. /export THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) /export/ebs THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,nohide,insecure,no_subtree_check,async) I mounted the exported folder to the second server: mount -t nfs4 -o proto=tcp,port=2049 NFS_SERVER_IP_HERE:/ebs /ebs and it works just fine. I mounted it to the third server but I cannot access files from it. ls -l /ebs ls: reading directory /ebs: Stale NFS file handle total 0 The syslog on the third server says: kernel: [11575.483720] NFS: server NFS_SERVER_IP_HERE error: fileid changed kernel: [11575.483722] fsid 0:14: expected fileid 0x2, got 0x6e001 Some info: uname -r 2.6.32-312-ec2 uname -m i686

  Read the article

• Authentication required by wireless network.

  - by Roman

  I would like to use a wireless network from Ubuntu. In the network drop-down menu I select a network (this is a University network I have an account there). Then I get a windows with the following fields: Wireless Security: [WPA&WPA2 Enterprise] Authentication: [Tunneled TLS] Anonymous Identity: [] CA Certificate: [(None)] Inner Authentication: [some letters] User Name: [] Password: [] I put there my user name and password and do not change default value and leave "Anonymous Identity"blank. As a result of that I get "Authentication required by wireless network". How can I solve this problem? I think it is important to notice that our system administrator tried to find some files (which are probably needed to be used as "CA Certificate"). He said that he does not know where this file is located on Ubuntu (he support only Windows). So, probably this is direction I need to go. I need to find this file. But may be I am wrong. May be something else needs to be done. Could you pleas help me with that?

  Read the article

• Mounting Replicated Gluster Multi-AZ Storage

  - by Roman Newaza

  I have Replicated Gluster Storage which is used by Auto scaling Servers. Both, Auto scaling and Storage are allocated in two Availability zones. Gluster: Number of Bricks: 4 x 2 = 8 Transport-type: tcp Bricks: Brick1: gluster01:/storage/1a # Zone A Brick2: gluster02:/storage/1b # Zone B Brick3: gluster03:/storage/2a # Zone A Brick4: gluster04:/storage/2b # Zone B Brick5: gluster01:/storage/3a # Zone A Brick6: gluster02:/storage/3b # Zone B Brick7: gluster03:/storage/4a # Zone A Brick8: gluster04:/storage/4b # Zone B I used Round Robin DNS for Gluster entry point, so DNS name resolves to all of the storage server addresses which are returned in different order all the time: # host storage.domain.com storage.domain.com has address xx.xx.xx.x1 storage.domain.com has address xx.xx.xx.x2 storage.domain.com has address xx.xx.xx.x3 storage.domain.com has address xx.xx.xx.x4 The Storage is mounted with Native Gluster Client: # grep storage /etc/fstab storage.domain.com:/storage /storage glusterfs defaults,log-level=WARNING,log-file=/var/log/gluster.log 0 0 I have heard Gluster might be mounted with the first Server IP and after that it will fetch its configuration with the rest of Servers. Personally, I never tested single Server mount setup and I don't know how Gluster handles this. On EC2, traffic among single Availability zone is free and between different zones is not. When Client in zone A writes to storage and IP of Storage in zone B is returned, it will cost me twice more for data transfer: Client (Zone A) - Storage Server (Zone B) - Replication to Storage Server (Zone A). Question: Would it be better to mount Storage Server of the same zone, so that data transfer charges apply only for replication (A - A - B)?

  Read the article

• Gluster bricks are offline and errors in logs

  - by Roman Newaza

  I have substituted all the IP addresses with hostnames and renamed configs (IP to hostname) in /var/lib/glusterd by my shell script. After that I restarted Gluster Daemon and the volume. Then I checked if all the peers are connected: root@GlusterNode1a:~# gluster peer status Number of Peers: 3 Hostname: gluster-1b Uuid: 47f469e2-907a-4518-b6a4-f44878761fd2 State: Peer in Cluster (Connected) Hostname: gluster-2b Uuid: dc3a3ff7-9e30-44ac-9d15-00f9dab4d8b9 State: Peer in Cluster (Connected) Hostname: gluster-2a Uuid: 72405811-15a0-456b-86bb-1589058ff89b State: Peer in Cluster (Connected) I could see mounted volumes size change on all the nodes when I execute df command, so new data is coming. But recently I noticed error messages in app log: copy(/storage/152627/dat): failed to open stream: Structure needs cleaning readfile(/storage/1438227/dat): failed to open stream: Input/output error unlink(/storage/189457/23/dat): No such file or directory Finally, I have found out some bricks are offline: root@GlusterNode1a:~# gluster volume status Status of volume: storage Gluster process Port Online Pid ------------------------------------------------------------------------------ Brick gluster-1a:/storage/1a 24009 Y 1326 Brick gluster-1b:/storage/1b 24009 N N/A Brick gluster-2a:/storage/2a 24009 N N/A Brick gluster-2b:/storage/2b 24009 N N/A Brick gluster-1a:/storage/3a 24011 Y 1332 Brick gluster-1b:/storage/3b 24011 N N/A Brick gluster-2a:/storage/4a 24011 N N/A Brick gluster-2b:/storage/4b 24011 N N/A NFS Server on localhost 38467 Y 24670 Self-heal Daemon on localhost N/A Y 24676 NFS Server on gluster-2b 38467 Y 4339 Self-heal Daemon on gluster-2b N/A Y 4345 NFS Server on gluster-2a 38467 Y 1392 Self-heal Daemon on gluster-2a N/A Y 1402 NFS Server on gluster-1b 38467 Y 2435 Self-heal Daemon on gluster-1b N/A Y 2441 What can I do about that? I need to fix it. Note: CPU and Network usage of all the four nodes are about the same.

  Read the article

• Can IIS7 execute php files?

  - by Roman

  I have IIS7 on my computer. It can display html files. But if I put a PHP program in the corresponding folder and then try to open it with the Chrome browser I do not see the expected page. Instead Chrome "downloads" this file. Is it beacuse IIS7 cannot display the PHP files?

  Read the article

• Mounting GlusterFS share under www-data user

  - by Roman Newaza

  Problem: After directory is auto-mounted, Web Server has no write permissions to it. Question: How to auto-mount GlusterFS endpoint via /etc/fstab so that mount point belongs to www-data after it's mounted? For now, the mount point belongs to www-data, but after mounting it turns to root. # /etc/fstab foo.com:/st /st glusterfs defaults 0 0 Seams like I cannot define user / group as mount options for GlusterFS, at least I don't see it when man glusterfs. Thanks!

  Read the article

• Why class 'SQLiteDatabase' is not found in /var/www/*.php?

  - by Roman

  I am trying to use sqlite from PHP. I have the following simple code: <?php $db = new SQLiteDatabase("test2.sdb"); unset($db); ?> As the result of this code (which I execute in the command line "php test2.php") I get: Fatal error: Class 'SQLiteDatabase' not found in /var/www/test2.php on line 3 Does anybody know how can I make PHP able to use sqlite? P.S. Here I found out that "SQLite support is enabled by default on a standard Linux PHP compilation starting with PHP 5.0." And I have "PHP Version = 5.2.6-2ubuntu4.6". So, sqlite should be enabled unless the "--disable-sqlite". In my case output of "phpinfo();" does not contain "sqlite" at all.

  Read the article

• Running bridged-networking vmware player on a Linux machine with 2 interfaces

  - by Roman D

  I have got a laptop running Arch Linux with 2 interfaces: wireless (wlan0) and ethernet (eth0). I use wlan0 to access internet (static IP, networking is configured using netcfg), and I connect a second PC to the eth0. Now, whenever I start vmware player (v. 4.0.4), it chooses wlan0 to connect its bridged virtual NIC to, but I need it to connect to eth0 (I want my guest machine to be able to talk to the second physical PC on eth0). So, I disable the wlan0 interface (netcfg -d wireless) and restart vmware. Now, it connects to eth0, and everything works fine; I can ping the host PC from the virtual one, and I can ping the virtual PC from the second physical PC connected to eth0. Then, if I try to reenable the wlan0 interface (netcfg -u wireless), all of the connectivity between the host and the guest (and between the second physical PC and the guest) gets lost, until I disable wlan0 again. Can someone please give me a hint on what's going on?

  Read the article

• How can I unregister a service with dns-sd?

  - by Roman

  I am trying to use "dns-sd" command line tool on my Windows 7 machine. I can already do something. For example I can register a service using "dns-sd -R ...". I also can browser (see) registered services using "dns-sd -B ...". What I still miss, is how to unregister a service. At the moment when I type "dns-sd -R ..." the dns-sd does not return me to the command prompt. To return to the command prompt I need to press Ctrl-C. And the service stays registered till I press Ctrl-C. What I want is to run "dns-sd -R ..." in the background regime and then I would like to have a possibility to unregister a service from the command line. One more thing which I do not understand yet is what "to look up a service" means. In my picture it should be sufficient to register a service, to see it and then to unregister it. But apparently I need to look up a service. What does it mean and why I need to do it? ADDED: As it is asked, I clarify. I refer to "dns-sd" command line tool which I use in Windows 7. I think this command is part of Bonjour software for Windows (from Apple). Well, I did not checked if I had this command before I installed Bonjour, but I assume I did not have it. So, my question is about this command.

  Read the article

• How do I install the latest version of packages in Ubuntu?

  - by Roman

  For example I want to install the latest version of "numpy". I type the following: "sudo apt-get install python-numpy". When I type this the first time it installs something and if I type this the second time it writes that I have already the latest version of numpy. However, I see that my version of numpy is 1.1.1. and I know that it NOT the latest version. Why it happens and how this problem can be solved? I can find the *tar.gz file with the latest version, I can extract files with the archive and than I need to rune one of the scripts which will be somewhere among the extracted files. But I do not like this way. It is too complicated. I do not know where I should put all these files, I do not know which dependencies I should install before I run the script for the installation of numpy, I do not know where numpy will be put after installation and so on. Is there an easy way to get the latest version of numpy?

  Read the article

• What WYSIWYG software can I use to create a web page?

  - by Roman

  I always made web pages by writing HTML code but now I would like to try to use some WYSIWYG approach. Can anybody recommend me a program which I can use for that? I mean a program in which you can move buttons, tables, pictures by mouse. You can change size and shape by mouse. You can use nice templates for "block of text", buttons, background and so on. I am using Windows 7. May be I already have something pre-installed?

  Read the article

• Error "fileid changed" when accessing files over NFS

  - by Roman Prikhodchenko

  I have an nfs-kernel-server configured and running on Ubuntu 10.04 Server. /export THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) /export/ebs THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,nohide,insecure,no_subtree_check,async) I mounted the exported folder to the second server: mount -t nfs4 -o proto=tcp,port=2049 NFS_SERVER_IP_HERE:/ebs /ebs and it works just fine. I mounted it to the third server but I cannot access files from it. ls -l /ebs ls: reading directory /ebs: Stale NFS file handle total 0 The syslog on the third server says: kernel: [11575.483720] NFS: server NFS_SERVER_IP_HERE error: fileid changed kernel: [11575.483722] fsid 0:14: expected fileid 0x2, got 0x6e001 Some info: uname -r 2.6.32-312-ec2 uname -m i686

  Read the article

• How can I unregister a service with dns-sd?

  - by Roman

  I am trying to use "dns-sd" command line tool on my Windows 7 machine. I can already do something. For example I can register a service using "dns-sd -R ...". I also can browser (see) registered services using "dns-sd -B ...". What I still miss, is how to unregister a service. At the moment when I type "dns-sd -R ..." the dns-sd does not return me to the command prompt. To return to the command prompt I need to press Ctrl-C. And the service stays registered till I press Ctrl-C. What I want is to run "dns-sd -R ..." in the background regime and then I would like to have a possibility to unregister a service from the command line. One more thing which I do not understand yet is what "to look up a service" means. In my picture it should be sufficient to register a service, to see it and then to unregister it. But apparently I need to look up a service. What does it mean and why I need to do it?

  Read the article

• Web Service gets unavailable after several concurrent calls

  - by Roman

  We are testing GoDaddy Virtual Data Center and came to a very strange issue when our web site gets unavailable. GoDaddy Support keeps saying the issue is in our web server settings, but looking at the result of our tests I doubt it. TEST ENVIRONMENT Virtual DataCenter with Windows hosted at GoDaddy.com. All servers have Windows Server 2008 R2 Datacenter, IIS 7. Server One with IP address 10.1.0.4 Server Two with IP address 10.1.0.3 Both servers are in private network not visible from outside. Port Forward with IP address 50.62.13.174. Port Forward is assigned to Server One TEST DESCRIPTION JMeter is used as a Client App to simulate 30 concurrent users sending 100 SOAP requests each. Interval between requests is 1 second. Http link used for testing: http://50.62.13.174/v2/webservices.asmx TEST ONE Test is run from a computer in our office. After JMeter starts running test, almost immediately, the link above becomes unavailable in a browser. After test completion, the link is not available in a browser for about 5 more minutes. Remote Desktop is working well, so we can connect to Server One remotely. After about 5 minutes since test completion, the link becomes available in a browser again. TEST TWO Test is run from Server Two (that is part of our virtual data center). Test works very well, no visible delays in processing. The link is available in a browser all the time. TEST THREE Test is run from Server One using localhost. The result is the same as in TEST TWO - no issues. TEST FOUR We repeated TEST ONE from other computers that we have located in different countries, all with the same result as TEST ONE. CONCLUSION As the test works well from Server Two, but does not work from outside our virtual data center, we feel there are issues with the network or its capacity. The whole behaviour looks like out requests from outside get stuck somewhere before reaching our virtual data center. Has anybody had similar issues in the past? Are there chances that something is wrong with our server settings?

  Read the article

• How do I register a service with Bonjour?

  - by Roman

  I am trying to start to use Bonjour. Here I found a manual how to register a service with Bonjour. The following is written there: The network services architecture in Bonjour includes an easy-to-use mechanism for publishing, discovering, and using IP-based services. Well let's see how to register a service. In the very beginning it is written: To publish a service, an application or device must register the service with a Multicast DNS responder But how?!?! First of all I do not know what is the Multicast DNS responder. Second, it is not written how do I do it. Where and what should I type? Should I use command line? Should I use some programming languages? What exactly should I type... Is there an easy way to start to use Bonjour? Well, it was emphasized several times how easy it should be to use it. But I cannot start to use it for several day. So, can anybody, pleas, help me with that?

  Read the article

• How can I find out if a port is opened or not?

  - by Roman

  I have installed Apache server on my Windows 7 computer. I was able to display the default index.php by typing http://localhost/ in the address line of my browser. However, I am still unable to see this page by typing IP address of my computer (neither locally (from the same computer) no globally (from another computer connected to the Internet)). I was told that I need to open port 80. I did it (in a way described here) but it did not solve the problem. First of all I would like to check which ports are opened and which are not. For example I am not sure that my port 80 was closed before I tried to open. I am also not sure that it is opened after I tried to open it. I tried to run a very simple web server written in Python. For that I used port 81 and it worked! And I did not try to open the port 81. So, it was opened by default. So, if 81 is opened by default, why 80 is not? Or it is? ADDITIONAL INFORMATION: 1. In my httpd.conf file I have "Listen 80". 2. This site tells me that port 80 on my computer is opened. 3. I get different responses if I try http://myip:80 and http://myip:81. In the last case browser (Chrome) writes me that link is broken. In the first case I get: Forbidden You don't have permission to access / on this server. 4. IE writes that "The website declined to show this webpage".

  Read the article

• How to add ISAPI web service extensions on IIS 5.1 using command line

  - by Roman Prikhodchenko

  Hi! I need to install an ISAPI extension on IIS 5.1 using command line. On windows server 2003 there is a script iisext.vbs but on windows xp it's not present.

  Read the article

• What technologies allow bidirectional streaming of video?

  - by Roman

  Wikipedia says that Flash allows "bidirectional streaming of audio and video". Is it possible to do that with other technologies (for example with JavaScript)? In other words, I want to transfer video from one user of web-site to another one in real time. I want to have something that is already installed by many users or easy to install (Flash fulfills this requirements). And I want to have something free.

  Read the article

• Insufficient channel capacity of 1GBit

  - by Roman S

  There is a Caching Server (Varnish): it receives data from Amazon S3 on request, saves it for some time and gives it to the client. We have encountered the problem of insufficient channel capacity of 1GBit. Peak load within 4 hours completely chokes the channel. Server performance is sufficient for now. Approximately 4.5TB of data are transmitted per day. More than 100TB are accumulated per month. The first thought that comes to mind is simply to add one more 1GBit port and sleep peacefully until 2GBit are not enough (it may happen quite quickly) or one server is not able to handle it. And then we just need to add new Caching Servers. But now we need a Load Balancer, which will send requests on one and the same URL, always on one and the same server (to avoid multiple copies of the same cached objects). Here are the questions: Does a Balancer need a band equal to sum of all bands of Caching Servers? What shall we do in case there are no ports in a Balancer? Should we add more Balancers or solve the problem by means of Round robin DNS? What are the standard approaches to such problems? Can anyone advise hosting-companies, which can solve this problem? We are interested in American and European markets.

  Read the article

• Rules to choose hardware for OLTP systems (sql server)

  - by Roman Pokrovskij

  Ok. We know database size, number of concurrent users, number of transactions per minute; should choose number of processors, RAID, RAM, mirroring and clustering. There are no exact rule.. but may be there are no rules at all? In my practice in every case I have "legacy" system, and after some inspections and interview I can form an opinion how hardware and design can be improved. But every time when I meet "absolutely" new system (I guess there are no new systems, but sometimes are such tasks) I can't say anything trustful. So I'm interesting how people deal with such tasks? They map task on theirs experience or have some base formulas?

  Read the article

• How to troubleshoot a remote wmi query/access failure?

  - by Roman

  I'm using Powershell to query a remote computer in a domain for a wmi object, eg: "gwmi -computer test -class win32_bios". I get this error message: Value does not fall within the expected range Executing the query local under the same user works fine. It seems to happen on both windows 2003 and also 2008 systems. The user that runs the shell has admin rights on the local and remote server. I checked wmi and dcom permissions as far as I know how to do this, they seem to be the same on a server where it works, and another where it does not. I think it is not a network issue, all ports are open that are needed, and it also happens within the same subnet. When sniffing the traffic we see the following errors: RPC: c/o Alter Cont Resp: Call=0x2 Assoc Grp=0x4E4E Xmit=0x16D0 Recv=0x16D0 Warning: GssAPIMechanism is not found, either caused by not reassembled, conversation off or filtering. And an errormessage from Kerberos: Kerberos: KRB_ERROR - KDC_ERR_BADOPTION (13) The option code in the packet is 0x40830000 Any idea what I should look into?

  Read the article

< Previous Page | 5 6 7 8 9 10 11 12 13 14 15 16  | Next Page >