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• RDP Connection to Windows 7 stays really slow

  - by Pavlo

  I have an Issue with connecting to Windows 7 via RDP. I can open an RDP Session, but regardless of any settings, the responce times are really long. This in particulary is the case when opening a web page in a browser. I've tried IE, Firefox and Google Chrome. I also use RDP connection to a Windows 2008 Server from the same client machine, and the speed is very normal with all features turned on. We have Gigabit Ethernet here. So I think it can not be the client's fault. What concerns Windows 7 Machine, I've tried shutting all the sraphic features off and turning the color levels to 256 colors. Result - the same. If I work locally on the machine - I can not see any lags. What else have I tried: Using old RDP 5 Client from Microsoft Setting network autotuninglevel as seen here Do You have some ideas? Thanks in advance! Update the problem seems to be with rendering window contents. All the window borders and pannes are rendered pretty quickly, but the content shows up very slowly. Also mouse movements are recognised by the Win 7 box only after some period. Are there some hidden settings in the RDP, where one could turn some advanced features off or turn some caching on? I use Bitmap Caching, but this apparently doesn't help.

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• not able to register sip user on red5server, using red5phone

  - by sunil221

  I start the red5, and then i start red5phone i try to register sip user , details i provide are username = 999999 password = **** ip = asteriskserverip and i got --- Registering contact -- sip:[email protected]:5072 the right contact could be --- sip :99999@asteriskserverip this is the log: SipUserAgent - listen -> Init... Red5SIP register [SIPUser] register RegisterAgent: Registering contact <sip:[email protected]:5072> (it expires in 3600 secs) RegisterAgent: Registration failure: No response from server. [SIPUser] SIP Registration failure Timeout RegisterAgent: Failed Registration stop try. Red5SIP Client leaving app 1 Red5SIP Client closing client 35C1B495-E084-1651-0C40-559437CAC7E1 Release ports: sip port 5072 audio port 3002 Release port number:5072 Release port number:3002 [SIPUser] close1 [SIPUser] hangup [SIPUser] closeStreams RTMPUser stopStream [SIPUser] unregister RegisterAgent: Unregistering contact <sip:[email protected]:5072> SipUserAgent - hangup -> Init... SipUserAgent - closeMediaApplication -> Init... [SIPUser] provider.halt RegisterAgent: Registration failure: No response from server. [SIPUser] SIP Registration failure Timeout please let me know if i am doing anything wrong. regards Sunil

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• Remote Socket Read In Multi-Threaded Application Returns Zero Bytes or EINTR (104)

  - by user39891

  Hi. Am a c-coder for a while now - neither a newbie nor an expert. Now, I have a certain daemoned application in C on a PPC Linux. I use PHP's socket_connect as a client to connect to this service locally. The server uses epoll for multiplexing connections via a Unix socket. A user submitted string is parsed for certain characters/words using strstr() and if found, spawns 4 joinable threads to different websites simultaneously. I use socket, connect, write and read, to interact with the said webservers via TCP on their port 80 in each thread. All connections and writes seems successful. Reads to the webserver sockets fail however, with either (A) all 3 threads seem to hang, and only one thread returns -1 and errno is set to 104. The responding thread takes like 10 minutes - an eternity long:-(. *I read somewhere that the 104 (is EINTR?), which in the network context suggests that ...'the connection was reset by peer'; or (B) 0 bytes from 3 threads, and only 1 of the 4 threads actually returns some data. Isn't the socket read/write thread-safe? I use thread-safe (and reentrant) libc functions such as strtok_r, gethostbyname_r, etc. *I doubt that the said webhosts are actually resetting the connection, because when I run a single-threaded standalone (everything else equal) all things works perfectly right, but of course in series not parallel. There's a second problem too (oops), I can't write back to the client who connect to my epoll-ed Unix socket. My daemon application will hang and hog CPU 100% for ever. Yet nothing is written to the clients end. Am sure the client (a very typical PHP socket application) hasn't closed the connection whenever this is happening - no error(s) detected either. Any ideas? I cannot figure-out whatever is wrong even with Valgrind, GDB or much logging. Kindly help where you can.

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• Windows EFS file sharing anomaly

  - by wbkang

  Fyi, I can confirm this happening in Windows Vista (Business) and Windows 7 Professional in WORKGROUP mode (as both a client and a server). I am not totally sure if this is a Superuser question or a ServerFault question. So there are two PCs, let's call them C (client) and S (server). Both servers have a user called U with the same password. Both C and S has the same private/public key pair for EFS. S shares a folder F with U given full permission. Also locally, the user U has the full permission on F. Now, U, from C, connects to F at the server S, everything works totally fine. I can read,write, delete files and create/delete folders in S. Things go weird from here. I encrypt the folder F in S. I can delete/modify files fine (so the files in F decrypted OK). However, U from C, cannot create a folder, or create a file getting Access Denied. But this Access Denied is very special. It takes over 10 seconds at C to receive the error and the explorer freezes while trying to create a folder, eventually returning error. In S, I can watch the folder created at the same time, and what I see is "New Folder" blinking like crazy and eventually disappearing when the client receives the error. i.e. it's created and deleted in a really rapid manner. What I do not understand is that permissions look fine, I can modify/delete files, and it looks like there is no problem with EFS because I can read/write files fine. Yet it fails to create a file or a folder. Any help is appreciated. Thanks, wbkang

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• Amazon EC2, fastest way to get a node into an existing cluster

  - by imaginative

  I'm new to Amazon AWS. A lot of the time I hear about people folks spawning instances and almost instantly putting them behind a load balancer and into an existing cluster. In the traditional world of managed machines, this would include provisioning hardware, installing an OS, configuring the network on the machine and once the network is available, use a tool of your choice such as CFengine, Puppet or Chef to bootstrap the machine based on its class. It seems like there are "shortcuts" that are able to get a server of a particular class up and running in Amazon EC2. If I have a particular stack running on my server, such as erlang, tomcat6 etc.. what's the fastest way to get these up and running and hooked into Amazon's load balancer? From network, to software stack to kernel tuning? Is it a combination of creating an AMI then running a tool like Puppet against the new instance? Any idea

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• Local SSL connections are causing redirect loop (after Ubuntu update)

  - by codeinthehole

  Following a recent Ubuntu update, my local websites are no longer serving their pages over SSL. For example, my .htaccess file attempts to ensure /sign-in is always served over HTTPS: RewriteEngine On RewriteCond %{HTTPS} off RewriteCond %{REQUEST_URI} /sign-in RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,QSA,R=301] However when I make a request to /sign-in on the domain site2-local , I get the error "The page isn't redirecting properly" with the following in /var/log/apache2/error.log [Tue Jun 08 12:20:57 2010] [info] [client 127.0.1.1] Connection to child 0 established (server site1-local:443) [Tue Jun 08 12:20:57 2010] [info] Seeding PRNG with 656 bytes of entropy [Tue Jun 08 12:20:57 2010] [info] Initial (No.1) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.2) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.3) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.4) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.5) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.6) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.7) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.8) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.9) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.10) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:21:12 2010] [info] [client 127.0.1.1] (70007)The timeout specified has expired: SSL input filter read failed. [Tue Jun 08 12:21:12 2010] [info] [client 127.0.1.1] Connection closed to child 0 with standard shutdown (server site2-local:443) There is a connection to site1-local (another site on my machine which shares the certificate), which I don't understand. Anyone know what is causing this issue?

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• SSH into remote server using Public-private keys

  - by maria

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

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• Want to use something like Citrix XenDesktop, Free Alternative?

  - by Chris

  I'm looking to go into IT, general office server management, and it looks like XenDesktop would be a awesome tool to use. If I get it right, you would store a central image of the OS you want to deploy (in an iso file) on the main server. Then use XenDesktop to pull that image down to the client, and it will then boot the OS inside of the virtual machine. Does it download the image of the OS and store it locally (like cloning the VM onto the client?) I'd love to find a free (possibly open source?) alternative to this, I keep on hearing about KVM in Linux and PXE booting a minimalistic OS to use remote KVMs.... Would that be what I'm looking for? Ideally, I'd like a system.. - That allows me to manage one central image for multiple clients (virtualized hardware) - Easily boot a thin client OS that connected to XenDesktop. Would those things be possible with some kind of free alternative? Some guidance would be greatly appreciated.

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• Cisco IOS BVI ACL: Only allow established UDP

  - by George Bailey

  Related: Cisco IOS ACL: Don't permit incoming connections just because they are from port 80 I know we can use the established keyword for TCP.. but what can we do for UDP (short of replacing a Bridge or BVI with a NAT)? Answer I found out what "UDP has no connection" means. DNS uses UDP for example.. named (DNS server) is lisenting on port 53 nslookup (DNS client) starts listening on some random port and sends a packet to port 53 of the server and notes the source port in that packet. nslookup will retry 3 times if necessary. Also the packets are so small that it does not have to worry about them coming in the wrong order. If nslookup receives a response on that port that comes from the servers IP and port then it stops listening. If the server tried to send two responses (for example a response and a response to the retry) then the server would not care if either of them made it because the client has the job to retry. In fact.. unless ICMP 3/3 packet gets through the server would not know about a failure. This is different from TCP where you get connection closed or timed out errors. DNS allows for an easy retry from the client as well as small packets.. so UDP is an excellent choice because it is more efficient. In UDP you would see nslookup sends request named sends answer In TCP you would see nslookup's machine sends SYN named's machine sends SYN-ACK nslookup's machine sends ACK and the request named's machine sends the response That is much more than is necessary for a tiny DNS packet

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• Juniper’s Network Connect ncsvc on Linux: “host checker failed, error 10”

  - by hfs

  I’m trying to log in to a Juniper VPN with Network Connect from a headless Linux client. I followed the instructions and used the script from http://mad-scientist.us/juniper.html. When running the script with --nogui switch the command that gets finally executed is $HOME/.juniper_networks/network_connect/ncsvc -h HOST -u USER -r REALM -f $HOME/.vpn.default.crt. I get asked for the password, a line “Connecting to…” is printed but then the programm silently stops. When adding -L 5 (most verbose logging) to the command line, these are the last messages printed to the log: dsclient.info state: kStateCacheCleaner (dsclient.cpp:280) dsclient.info --> POST /dana-na/cc/ccupdate.cgi (authenticate.cpp:162) http_connection.para Entering state_start_connection (http_connection.cpp:282) http_connection.para Entering state_continue_connection (http_connection.cpp:299) http_connection.para Entering state_ssl_connect (http_connection.cpp:468) dsssl.para SSL connect ssl=0x833e568/sd=4 connection using cipher RC4-MD5 (DSSSLSock.cpp:656) http_connection.para Returning DSHTTP_COMPLETE from state_ssl_connect (http_connection.cpp:476) DSHttp.debug state_reading_response_body - copying 0 buffered bytes (http_requester.cpp:800) DSHttp.debug state_reading_response_body - recv'd 0 bytes data (http_requester.cpp:833) dsclient.info <-- 200 (authenticate.cpp:194) dsclient.error state host checker failed, error 10 (dsclient.cpp:282) ncapp.error Failed to authenticate with IVE. Error 10 (ncsvc.cpp:197) dsncuiapi.para DsNcUiApi::~DsNcUiApi (dsncuiapi.cpp:72) What does host checker failed mean? How can I find out what it tried to check and what failed? The HostChecker Configuration Guide mentions that a $HOME/.juniper_networks/tncc.jar gets installed on Linux, but my installation contains no such file. From that I concluded that HostChecker is disabled for my VPN on Linux? Are the POST to /dana-na/cc/ccupdate.cgi and “host checker failed” connected or independent? By running the connection over a SSL proxy I found out that the POST data is status=NOTOK (Funny side note: the client of the oh-so-secure VPN does not validate the server’s SSL certificate, so is wide open to MITM attacks…). So it seems that it’s the client that closes the connection and not the server.

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• ssh_exchange_identification: Connection closed by remote host

  - by rick

  Firstly, I know that this question has been asked a million times, and I have read everything I can find and still cannot fix the problem. i am encountering this issue when ssh'ing in from my mac to my Ubuntu server on a fresh install of Ubuntu (I reinstalled because of this issue). I have SSH portmapped to 7070 because my ISP is blocking 22. On the client: bash: ssh -p 7070 -v [email protected] debug1: Reading configuration data /etc/ssh_config debug1: Connecting to address.org port 7070. debug1: Connection established. debug1: identity file /home/me/.ssh/identity type -1 debug1: identity file /home/me/.ssh/id_rsa type 1 debug1: identity file /home/me/.ssh/id_dsa type -1 ssh_exchange_identification: Connection closed by remote host Here's what I have done to try to resolve the issue: Made sure my maxstartups is ok: bash: grep MaxStartups /etc/ssh/sshd_config #MaxStartups 10:30:60 Made sure hosts.deny is clear of denials. Made sure hosts.allow has my client IP. Clear out known_hosts on client Changed ownership of /var/run to root Made sure etc/run/ssh is Made sure /var/empty exists Reinstall openssh-server Reinstall ubuntu When I run telnet localhost, I get this: telnet localhost Trying ::1... Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection refused When I run /usr/sbin/sshd -t Could not load host key: /etc/ssh/ssh_host_rsa_key Could not load host key: /etc/ssh/ssh_host_dsa_key When I regenerate the keys with ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key I get the same error. I am pretty sure this is the issue. Can anyone help?

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• SVN hangs on commit - any suggestions for troubleshooting?

  - by Richard Beier

  We're having a problem with SVN... Subversion clients such as TortoiseSVN hang when we commit any more than a few files at a time to our server. Everything appears to actually be committed successfully to the repository; but the client hangs after all the data has been transmitted. We're using version 1.4.4 of the SVN server. We use the svn:// protocol rather than http to connect. We've reproduced this problem with several clients: TortoiseSVN (1.6.10), AnkhSVN (2.1), and the Silk command-line client (1.6.12). This is happening for everyone on the team, though some people seem to be more affected than others. If someone commits only a few files, it often works; but with more than half a dozen files, it usually hangs. Does anyone have troubleshooting suggestions? This has been happening sporadically for a while, but it's become pretty consistent lately. We've been working around the issue by killing the hung SVN client, doing "svn cleanup", and then doing "svn up"; but sometimes that causes tree conflicts. Another workaround is to blow away the workspace and check it out again after every commit; but of course that's pretty annoying. Are there any diagnostics that could help us troubleshoot this? We're considering upgrading to SVN 1.6 server, and installing the server on a new machine; but we're wondering if there's an easier solution. Thanks for your help, Richard

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• Postfix enable SSL 465 failed

  - by user221290

  I have installed the Postfix and enabled SSL/TLS, just tested, I can sent email from port 25, 578, but cannot sent email from port 465, the log is: May 26 17:24:06 mail postfix/smtpd[28721]: SSL_accept:SSLv3 write server hello A May 26 17:24:06 mail postfix/smtpd[28721]: SSL_accept:SSLv3 write certificate A May 26 17:24:06 mail postfix/smtpd[28721]: SSL_accept:SSLv3 write server done A May 26 17:24:06 mail postfix/smtpd[28721]: SSL_accept:SSLv3 flush data May 26 17:24:06 mail postfix/smtpd[28721]: SSL3 alert read:fatal:certificate unknown May 26 17:24:06 mail postfix/smtpd[28721]: SSL_accept:failed in SSLv3 read client certificate A May 26 17:24:06 mail postfix/smtpd[28721]: SSL_accept error from unknown[10.155.36.240]: 0 May 26 17:24:06 mail postfix/smtpd[28721]: warning: TLS library problem: 28721:error:14094416:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate unknown:s3_pkt.c:1197:SSL alert number 46: May 26 17:24:06 mail postfix/smtpd[28721]: lost connection after CONNECT from unknown[10.155.36.240] May 26 17:24:06 mail postfix/smtpd[28721]: disconnect from unknown[10.155.36.240] My email server is: 10.155.34.117, and email client is: 10.155.36.240, the client error is: Could not connect to SMTP host: 10.155.34.117, port: 465. My Master.cf: smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes My main.cf: smtpd_use_tls = yes smtpd_tls_auth_only = no smtpd_tls_key_file = /etc/pki/myca/mail.key smtpd_tls_cert_file = /etc/pki/myca/mail.crt smtpd_tls_CAfile = /etc/pki/myca/cacert_new.pem smtpd_tls_loglevel = 2 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s smtpd_tls_session_cache_database = btree:/etc/postfix/smtpd_scache Seems it's my certificate issue, but I have tried to grant the file many times...I have no idea on this, please help!

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• In an environment with multiple WiFi access points, do wireless clients sometimes connect to both at the same time?

  - by Bobby Burgess

  This is more of a curiosity than a problem, but in this new office I have two D-link DAP-2553's connected in a master/slave array (this just means the master keeps certain configuration options aligned with the slave). The network is set to 802.11n-only, and each AP has the same SSID and WPA2 key. The only difference is that they are on different channels (1 and 11). The WiFi network itself is working well. Users can roam around and the signal/speed is fairly consistent. However, I notice that when I look at the 802.11 client list in the web admin page for each of the 2 APs, I see that certain clients are connected to both, for extended periods of time, but I assume they are only passing data through one of them. Not every client is seen on each AP, but at any given time the same MAC address of a WiFi adapter can be associated (and remain associated) with both APs. The client list auto-refreshes every few seconds so I believe I'm looking at the most recent rather than stale information. One of the WiFi adapters that consistently associates with both APs is an Intel Centrino Wireless-N 1030 (laptop chip). Is it part of the WiFi standard that more than one association per WiFi card can be established concurrently on separate APS?

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• Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most

  - by Henno

  Problem Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most. Topology Facts ESXi5 version is 5.0.0.504890 VM has the latest Vmware Tools installed VM is using E1000 network driver Physical box has Win Srv 2008 R2 as the OS CrystalDiskMark says the drive on physical box can read/write 100MB/s vCenter is another vm on esx both vm and physical box are showing 1Gbps link speed Configuration Networking shows vmnic0 as 1000 Full NTttcp is a client/server tool from Microsoft for measuring pure network throughput Here's what I've done so far: Test1: VM is running Filezilla FTP Server (default settings, one user account made) Physical box is running Filezilla FTP Client (default settings) Physical box is uploading a big file to FTP server Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Physical box is downloading that file from FTP server Transfer speed (as observed by Windows Task Manager on both machines): still ~11MB/s (bad) Could it be disk performance issue? Test2: Physical box is running ntttcpr.exe -a 6 -m 6,0,VM_IP_ADDRESS VM is running ntttcps.exe -a 6 -m 6,0,PHY_BOX_IP_ADDRESS Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Could it be switch performance issue? Test3: physical box is running vSphere Client I open Summary Storage datastore Browse Datastore... from physical box and upload a file to datastore Transfer speed (as observed by Windows Task Manager on physical box): ~26-36MB/s (good) Could it be a vm specific issue? Test4: Installed ntttcp to another vm on the same esx server Measured network performance between vms on the same esx server with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~90-120MB/s (excellent :) Test5: I have another esx server on the same site, connecting to the same datastore and same switch. Those two ESX servers have both 2 NICs. One NIC goes to switch while the other goes directly to the other ESX server. vMotioned one of the testing vms off to the other ESX host Measured network performance between vms on different esx servers with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~11MB/s (bad) While I'm aware of these: ESXi 4.1 slow file transfer ESXi 5 network performance is slow Debian Etch and ESXi slow network speeds VMWare ESXi slow file copy to guest they did not help (or I must have been missed something)

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• PHP displays blank white page even with all error reporting enabled

  - by Andy Shinn

  I am trying to debug a broken page in a Drupal application and am having a hard time getting PHP to spit anything useful out. I have the following set: error_reporting = E_ALL display_errors = On display_startup_errors = On log_errors = On error_log = /var/log/php/php_error.log I have a file showing me phpinfo() which confirms these variables are set correctly for the environment. I have increased memory_limit to 256M (which should be more than enough). Yet, the only indication I get is a status 500 code in the apache access log and a blank white page from PHP. The Apache virtual host has LogLevel set to debug and the error log only outputs: [Sat Jun 16 20:03:03 2012] [debug] mod_deflate.c(615): [client 173.8.175.217] Zlib: Compressed 0 to 2 : URL /index.php, referer: http://ec2-174-129-192-237.compute-1.amazonaws.com/admin/reports/updates [Sat Jun 16 20:03:03 2012] [error] [client 173.8.175.217] File does not exist: /var/www/favicon.ico [Sat Jun 16 20:03:03 2012] [debug] mod_deflate.c(615): [client 173.8.175.217] Zlib: Compressed 42 to 44 : URL /favicon.ico The PHP error log outputs nothing at all. kernel and syslog show nothing related to Apache or PHP. I have also tried installing suphp and checking its log just confirms the user is executing correctly: [Sat Jun 16 20:02:59 2012] [info] Executing "/var/www/index.php" as UID 1000, GID 1000 [Sat Jun 16 20:05:03 2012] [info] Executing "/var/www/index.php" as UID 1000, GID 1000 This is on Ubuntu 12.04 x86_64 with the following PHP modules: ii php5 5.3.10-1ubuntu3.1 server-side, HTML-embedded scripting language (metapackage) ii php5-cgi 5.3.10-1ubuntu3.1 server-side, HTML-embedded scripting language (CGI binary) ii php5-cli 5.3.10-1ubuntu3.1 command-line interpreter for the php5 scripting language ii php5-common 5.3.10-1ubuntu3.1 Common files for packages built from the php5 source ii php5-curl 5.3.10-1ubuntu3.1 CURL module for php5 ii php5-gd 5.3.10-1ubuntu3.1 GD module for php5 ii php5-mysql 5.3.10-1ubuntu3.1 MySQL module for php5 So, what am I missing here? Why no error reporting?

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• Why did my zpool replace never finish and what should I do now?

  - by Josh

  I have a ZFS zpool with two disks in a mirror configuration, da0 and da1. da1 failed, and so I replaced it with da2 using zpool replace BearCow da1 da2 This ran for a few hours, during which zpool status showed that the array was being resilvered. When that finished, zpool status showed that the resilver was completed, but the array was still degraded... I tried a zpool scrub and a zpool clear, but the array still shows as degraded: [root@chef] ~# zpool status BearCow pool: BearCow state: DEGRADED scrub: scrub completed after 0h20m with 0 errors on Tue Oct 9 16:13:27 2012 config: NAME STATE READ WRITE CKSUM BearCow DEGRADED 0 0 0 mirror DEGRADED 0 0 0 da0 ONLINE 0 0 0 replacing DEGRADED 0 0 0 da1 OFFLINE 0 0 0 da2 ONLINE 0 0 0 errors: No known data errors I can't zpool replace BearCow da1 da2 anymore because da2 is already a member of BearCow... This is FreeBSD (FreeNAS) running ZFS pool version 15. How do I get my array to show as healthy again?

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• mount multiple folders with nfs4 on centos

  - by microchasm

  I'm trying to get nfs4 working here. Machine 1 (server) I have a folder and in it 2 other folders I'm trying to share independently. /shared/folder1 /shared/folder2 Problem is, I can't seem to figure out how to mount the folders independently on the client. (Machine 1 - server) /etc/exports: /var/shared/folder1 192.168.200.101(rw,fsid=0,sync) /var/shared/folder2 192.168.200.101(rw,fsid=0,sync) ... exportfs -ra (Machine 2 - client) /etc/fstab: 192.168.200.201:/folder1/ /home/nfsmnt/folder1 nfs4 rw 0 0 ... mount /home/nfsmnt/folder1 mount.nfs4: 192.168.200.201:/folder1/ failed, reason given by server: No such file or directory The folder is there. I'm positive. I think there is something simple I'm missing, but I'm totally missing it. It seems like there should be a way in fstab to tell nfs which folder on the server I want to mount. But I can only find references to what looks like a root mount point (e.g. 192.168.1.1:/) which I assume is handled by exports on the server. But even with the folders set up in exports, there doesn't seem to be an apparent way to pich and choose which gets mounted. Is it not possible to mount separate folders from the same server to different mount points on the client? Any help appreciated.

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• SVN hangs on commit - any suggestions for troubleshooting?

  - by Richard Beier

  We're having a problem with SVN... Subversion clients such as TortoiseSVN hang when we commit any more than a few files at a time to our server. Everything appears to actually be committed successfully to the repository; but the client hangs after all the data has been transmitted. We're using version 1.4.4 of the SVN server. We use the svn:// protocol rather than http to connect. We've reproduced this problem with several clients: TortoiseSVN (1.6.10), AnkhSVN (2.1), and the Silk command-line client (1.6.12). This is happening for everyone on the team, though some people seem to be more affected than others. If someone commits only a few files, it often works; but with more than half a dozen files, it usually hangs. Does anyone have troubleshooting suggestions? This has been happening sporadically for a while, but it's become pretty consistent lately. We've been working around the issue by killing the hung SVN client, doing "svn cleanup", and then doing "svn up"; but sometimes that causes tree conflicts. Another workaround is to blow away the workspace and check it out again after every commit; but of course that's pretty annoying. Are there any diagnostics that could help us troubleshoot this? We're considering upgrading to SVN 1.6 server, and installing the server on a new machine; but we're wondering if there's an easier solution. Thanks for your help, Richard

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• Secure data from a server to a workstation using jumper hosts

  - by apalsson

  Hello. I have a WWW-server, my problem is that the content is sensitive and should not be accessible for people without proper credentials. How can I improve the ease of use but still maintain security following scenario; The Server is accessed through a "jumper host", i.e. the client connects to the jumper using VPN-connection and uses RemoteDesktop to access the jumper. From the jumper he uses RemoteDesktop again to access the Server. Finally on the Server the user can access content using a WWW-browser. All the way from the VPN-client to the WWW-browser requires authentication using a SmartCard-token. This seems quite secure to me. Content only gets mirrored on the RemoteDesktop between Server and jumper, no cached files to worry about. Connection between jumper and client is protected using VPN(ssl), so no eavesdropping. But it is quite cumbersome for the clients with many steps and connections to open. :( So, how can I improve the user experience accessing my server without compromising security? Thanks.

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• Why is Outlook 2007 resizing images in outgoing and incoming HTML email? How can I fix this?

  - by Mikuso

  In my Outlook 2007 client, embedded images in incoming emails appear resized when the message is viewed. The incoming images are resized to 198px wide, despite the original size. If it was larger, it will be shrunk; if it was smaller, it will be enlarged; the aspect ratio remains the same (the image is not stretched). This is local to my client only (i.e. another Outlook 2007 client reading the same IMAP inbox will see the image in the correct size. Similarly, viewing the email message in a browser will display the correct size). This happens regardless of whether width/height attributes are set on the image tag in the HTML. Zoom is set to 100% in my message window; text and other elements are not distorted from the original. In addition to this, outgoing HTML messages with images embedded in the same way are resized as they are sent. The outgoing images are all scaled to have a width of 247px. The source HTML of the outgoing message is changed after pressing Send so that the tag's width attribute is 247 pixels and the image file itself is also resized. These problems only occur with HTML messages; Rich Text messages do not have the same problem. I have already tried reinstalling Outlook and have it fully patched up to date. Why is this happening and how can I stop this?

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• Connect by Wifi to Sql Server from another computer

  - by Bronzato

  I try to connect by Wifi to Sql Server with Sql Server Management Studio from another computer but it failed. I have a computer with Windows Seven & Sql Server 2008 (lets say the server computer). Next to it, I have a fresh installed computer with Windows Seven & Sql Server Management Studio (let's say the client computer). What I do on the server computer: configure firewall by enabling port 1433 enabled network protocols (TCP/IP) inside Sql Server Configuration Manager checked "Allow remote connections to this server" on server properties in Sql Server Management. started Sql Server Browser restarted services (Sql Server Browser is stopped but I think it is not neccessary, isn't it?) Next, I successfully tested a ping on the port 1433 from my client computer with a tool named tcping (ex: tcping 192.168.1.4 1433). But I still cannot connect from my client computer to Sql Server on my other computer. Ok, something new on this problem: until now, I successfully connected to my "server computer" with Management Studio. What I do is typing the computer name in the server name field in the connection window of Management Studio. My previous (failed) attempt was to type the computer name followed by the instance of sql server (ex: COMPUTER_NAME\SQL2008). I don't know why I only have to type the computer name... Nevermind. Now my new challenge is to succeed connecting my VB6 application to this remote database located on my "computer server". I have a connection string for this but it failed to connect. Here is my connection string: "Provider=SQLOLEDB.1;Password=mypassword;User ID=sa;Initial Catalog=TPB;Data Source=THIERRY-HP\SQL2008" Any idea what's wrong? Thanks

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• Samba Does Not List Files In Shared Directory

  - by Sean M

  I am running Samba on a CentOS server, and I am experiencing a problem where it allows me to connect to the server and see a share, but shows the share as an empty directory. I find this behavior strange. Here is the stanza in my smb.conf for the given share: [seanm] path = /home/seanm writeable = yes valid users = seanm, root read only = No Here's what I see on the server side: [seanm@server ~]$ ls -l -rw-r--r-- 1 seanm seanm 40 Jan 4 13:45 pangram.txt And yet: [seanm@client ~]$ smbclient //server/seanm -U seanm -W WORKGROUP Enter seanm's password: Domain=[WORKGROUP] OS=[Unix] Server=[Samba 3.0.33-3.29.el5_5.1] smb: \> ls . D 0 Fri Jan 7 10:08:55 2011 .. D 0 Fri Jan 7 07:58:31 2011 58994 blocks of size 262144. 50356 blocks available This behavior is present on both a Windows client and a Linux client system. The behavior is present with the firewall on and with the firewall off, so it's not that. Neither /var/log/messages nor /var/log/secure have any complaints about Samba. I doubt that SELinux is a problem: just in case, here are the relevant settings. [root@server ~]# getsebool -a | grep samba samba_domain_controller --> off samba_enable_home_dirs --> on samba_export_all_ro --> off samba_export_all_rw --> off samba_share_fusefs --> off samba_share_nfs --> off use_samba_home_dirs --> on virt_use_samba --> off What am I doing wrong here, and what can I do to fix it?

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• Group Policy for DNS Server Addresses

  - by John

  This question deals strictly with the methodology of using Active Directory to publish DNS settings and controlling the DNS server address order to domain attached clients. This is not asking about if this is the right function, role, or best use of group policy; but rather, how to make it work. I would like to be able to publish in group policy DNS addresses and possibly control the order in which the client consumes the addresses. I have tried following the information from this site without success. I set the following setting within group policy, but the client never shows the settings within the TCP/IP properties. Computer Configuration/Administrative Templates/Network/DNS Client/DNS Servers I did list them as a single space separated list. For example, the following: 192.168.0.1 192.168.10.3 192.168.34.2 192.168.2.67 192.168.56.99 192.168.99.23 This would be for Windows 7, Windows Server 2003, and Windows Server 2008 clients. I am not sure what I am doing wrong or how to get this to work. Am I missing a setting? Do I need to set something differently?

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• IIS not responding with SSL Server Hello

  - by Damien_The_Unbeliever

  I'm having difficulty getting a particular IIS machine to "do" SSL. This is a test environment (one of many) which we've set up "the same" as we have many times previously, but it just doesn't seem to be working. The server is Windows Server 2003 (Version 5.2 (Build 3790.srv03_sp2_gdr.100216-1301 : Service Pack 2)) IIS is hosting 4 sites (including the default site), but only one site is configured for SSL. We're using the same SSL certificate we use on all of our other servers (it's a wildcard cert). (Don't think this is relevant, but including anyway) We've configured the site to require SSL, it has a subdirectory that doesn't require SSL but has an asp page that redirects into SSL. The 403;4 error page for the site is hooked up to this asp page (this is how we do our non-HTTPS into HTTPS transition). Using Microsoft Network Monitor (3.3), I've just run a session against a server where SSL is working. It can pull apart the SSL exchange as the following messages: SSL: Client Hello SSL: Server Hello. Certificate. Server Hello Done SSL: Client Key Exchange. Change Cipher Spec. Encrypted Handshake Message. SSL: Change Cipher Spec. Encrypted Handshake Message However, on our problem server, I only see: SSL: Client Hello. The next packet from the server (from port 443, so it's listening and responding there) contains only 60 bytes, and just seems to have the Tcp headers and not much else (but I'm by no means an expert at deciphering these things). So, where do I look next? Or what additional information do I need to add to this question, and where do I find it?

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