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• Why doesn't Ubuntu detect my second hard drive?

  - by user93179

  I am new to Linux and to Ubuntu, I was wondering, I have two hard drives setup in SATA ports (non-raid, at least I don't think they are). I installed ubuntu unto the drives fresh without any previous versions or windows at all. However when I got the Ubuntu 12.04 LTS working, all I see is 1 x 120 gigabyte harddrive. Also, not sure if this is important or not, my hard drives are SSD. My computer specs are Asus P9Z77-V-LK Nvidia Geforce GTX 660 TI Intel i5 3570k 3.4 /proc/partitions shows: major minor #blocks name 8 0 117220824 sda 8 1 117219328 sda1 8 16 117220824 sdb 8 17 96256 sdb1 8 18 108780544 sdb2 8 19 8342528 sdb3 11 0 1048575 sr0 and ls -l /sys/block/ | grep -v /virtual/: lrwxrwxrwx 1 root root 0 Sep 27 17:26 sda - ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda lrwxrwxrwx 1 root root 0 Sep 27 17:26 sdb - ../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sdb lrwxrwxrwx 1 root root 0 Sep 27 22:26 sdc - ../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/host6/target6:0:0/6:0:0:0/block/sdc lrwxrwxrwx 1 root root 0 Sep 27 22:04 sr0 - ../devices/pci0000:00/0000:00:1f.2/host3/target3:0:0/3:0:0:0/block/sr0 sudo file -s /dev/sd*: /dev/sda: x86 boot sector; partition 1: ID=0x7, starthead 32, startsector 2048, 234438656 sectors, code offset 0xc0, OEM-ID " ?", Bytes/sector 190, sectors/cluster 124, reserved sectors 191, FATs 6, root entries 185, sectors 64514 (volumes 32 MB) , physical drive 0x7e, dos 32 MB) , FAT (32 bit), sectors/FAT 749, reserved3 0x800000, serial number 0x35361a2b, unlabeled /dev/sdb2: Linux rev 1.0 ext4 filesystem data, UUID=387761ac-5eba-4d0f-93ba-746a82fb541d (needs journal recovery) (extents) (large files) (huge files) /dev/sdb3: data /dev/sdc: x86 boot sector; partition 1: ID=0xc, active, starthead 0, startsector 8064, 30473088 sectors, code offset 0xc0 /dev/sdc1: x86 boot sector, code offset 0x58, OEM-ID "SYSLINUX", sectors/cluster 64, reserved sectors 944, Media descriptor 0xf8, heads 128, hidden sectors 8064, sectors 30473088 (volumes 32 MB) , FAT (32 bit), sectors/FAT 3720, Backup boot sector 8, serial number 0xf90c12e9, label: "KINGSTON " /dev/sda1: x86 boot sector, code offset 0x52, OEM-ID "NTFS ", sectors/cluster 8, reserved sectors 0, Media descriptor 0xf8, heads 255, hidden sectors 2048, dos 32 MB) , FAT (32 bit), sectors/FAT 749, reserved3 0x800000, serial number 0x35361a2b, unlabeled Any help would be greatly appreciated! Thanks Another thing I noticed is, when i use gparted to locate my drives, it seems that sda1 is my second drive that I am not detecting when I boot up and my ubuntu + FAT Boot files are installed in sdb1

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• Help recovering broken OS (permissions issue)

  - by Guandalino

  (At the bottom there is an important update.) I was doing experiments in order to backup a remote account to my local system, Ubuntu 12.04 LTS. I'm not confident with duplicity and probably, due to wrong syntax, some local files have been replaced with remote files. This is just a supposition, I'm not sure this is the real cause of OS corruption. The corruption happened after experimenting with backups, so I think I did something wrong at this regard. I was aware there was a problem when I tried to access a command using sudo: $ sudo ls sudo: unable to open /etc/sudoers: Permission denied sudo: no valid sudoers sources found, quitting sudo: unable to initialize policy plugin This is how /etc/sudoers looks like: $ ls -ald /etc/sudoers -r--r----- 1 root root 788 Oct 2 18:30 /etc/sudoers At this point I tried to reboot and now this is the message I get: The system is running in low graphics mode. Your screen, graphics card and input device settings could not be detected correctly. You will need to configure these yourself. I tried to follow the wizard to configure these settings, but without luck (the system prevents me going on when I press "Next"). The thing that makes me a bit less worried is that all the data on the disk seems readable and I'm able to access them using a live cd. I run memtest and RAM seems to be OK. Do you have any idea about how to recover my system? I'm very glad to provide further information, just let me know what info could be helpful. UPDATE. The issue is about wrong permissions and this is how I discovered: I mounted the root partition of the broken OS on /mnt/broken/ (live CD) and did ls /mnt/broken/. I got a permission denied error, while I expected to have the directory listing. I had to do sudo ls /mnt/broken/ and this worked. Thus without having root permission via sudo it's impossible to access the root of broken os. The current output of ls -ld /mnt/broken/ is: drwxr-x--- 29 1000 812 4096 2012-12-08 21:58 /mnt/broken Any thoughts on how to restore the old (working) set of permissions?

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• Occasional disk I/O errors in SQLite

  - by Alix Axel

  I have a very simple website running PHP and SQLite 3.7.9 (with PDO). After establishing the SQLite connection I immediately execute the following queries: PRAGMA busy_timeout=0; PRAGMA cache_size=8192; PRAGMA foreign_keys=ON; PRAGMA journal_size_limit=67110000; PRAGMA legacy_file_format=OFF; PRAGMA page_size=4096; PRAGMA recursive_triggers=ON; PRAGMA secure_delete=ON; PRAGMA synchronous=NORMAL; PRAGMA temp_store=MEMORY; PRAGMA journal_mode=WAL; PRAGMA wal_autocheckpoint=4096; This website only has one writer and a few occasional readers, so I don't expect any concurrency problems (and I'm even using WAL). Every couple of days, I've seen this error being reported by PHP: Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 10 disk I/O error' in ... Stack trace: #0 ...: PDO-exec('PRAGMA cache_si...') There are several things that make this error very weird to me: it's not a transient problem - no matter how many times I refresh the page, it won't go away the database file is not corrupted - the sqlite3 executable can open the database without problems If the following pragmas are commented out, PHP stops throwing the disk I/O exception: PRAGMA cache_size=8192; PRAGMA synchronous=NORMAL; PRAGMA journal_mode=WAL; Then, after successfully reconnecting to the database, I'm able to reintroduce these pragmas and the code with run smoothly for days - until eventually, the same error will occur without any apparent reason. I wasn't able to reproduce this error so far, so I'm clueless about the origin of it. I'm really curious what may be causing this problem... Any ideas? Environment: Ubuntu Server 12.04 LTS PHP 5.4.15 SQLite 3.7.9 Database size: ? 10MiB Transaction (write) size: ? 1KiB EDIT: Might these symptoms have something to do with busy_timeout?

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• Apache+LDAP auth on Ubuntu says "Can't contact LDAP server" while ldapsearch is perfect

  - by tw79

  Hi Gurus, I'm migrating from an existing apache+LDAP+mysql+php server to a new hardware platform. Old server is running Debian Lenny, which I have no config documentation available (was done by previous sysadmin); New server is running Ubuntu 10.04.2 LTS 32bit. After installing Apache and configured LDAP client on the new server, ldapsearch to the LDAP master (another dedicated server) returns results just fine. However, when using apache with https, logs complain that "Can't contact LDAP server". I'm authenticating using ldaps and can confirm that 636 port is open on the LDAP master. I can't understand why apache would fail while regular ldapsearch is working! Below is part of the virtualhost config: <Directory /> Options FollowSymLinks AllowOverride None #AuthLDAPEnabled on AuthType Basic AuthBasicProvider ldap AuthName "Private" AuthLDAPURL ldaps://master.ldap.organisation.com:636/ou=people,dc=organisation,dc=com?uid AuthzLDAPAuthoritative off require valid-user AddType application/x-httpd-php .php .phtml <IfModule mod_php4.c> php_flag magic_quotes_gpc Off php_flag track_vars On php_value include_path . </IfModule> </Directory> Any help/suggestion is very much appreciated!

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• Gitlab and Nginx not loading gitlab

  - by paperids

  I have just installed gitlab and nginx on Ubuntu LTS 12.04 using this guide: http://blog.compunet.co.za/gitlab-installation-on-ubuntu-server-12-04/ I installed this on another server last night and had absolutely no problems with it (sort of a test run to see how long it would take to get going). I am not getting any errors when restarting gitlab or nginx with /etc/init.d and my error logs are empty. The only thing I know of to go on is the vhost config: upstream gitlab { server unix:/home/gitlab/gitlab/tmp/sockets/gitlab.sock$ } server { listen localhost:80; server_name gitlab.bluringdev.com; root /home/gitlab/gitlab/public; # individual nginx logs for this gitlab vhost access_log /var/log/nginx/gitlab_access.log; error_log /var/log/nginx/gitlab_error.log; location / { # serve static files from defined root folder;. # @gitlab is a named location for the upstream fallback$ try_files $uri $uri/index.html $uri.html @gitlab; } # if a file, which is not found in the root folder is r$ # then the proxy pass the request to the upsteam (gitla$ location @gitlab { proxy_redirect off; # you need to change this to "https", if you set "ssl" $ proxy_set_header X-FORWARDED_PROTO http; proxy_set_header Host gitlab.bluringdev.com:80; proxy_set_header X-Real-IP $remote_addr; proxy_pass http://gitlab; } } If there's any other information that would be helpful, just let me know and I'll get it up asap.

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• Webmin / Virtualmin running php as www-data, is locked out of viewing .htaccess and writing

  - by Kirill

  I've asked this on the virtualmin forums, but haven't had any help from there. Recently, "something" happened and it seems that the apache service has gone a bit weird. What it does: it runs all apache traffic as www-data and sometimes spawns the php5-cgi process as www-data, this is a problem because all the domain users own their directories and default permissions don't let www-data write to these folders (file uploads are dead) or read .htaccess (permalinks are broken in wordpress). I've googled this for about a week straight now, tried pretty much everything I could find and achieved nothing. The only thing that I think might actually be the cause of all this is this page: http:// - i.imgur.com/NYW3x.png (got shut down by the spam filter) So I figured if I set it to "default", this might magically start working again, but all it does is "crash" apache (all websites timeout). I figure it's something to do with the "mpm" module or something, but I can't find anything relevant in the settings to modify for it to work. Can someone please point me in the right direction? System info: Webmin version 1.580 Kernel and CPU Linux 2.6.35.4-rscloud on x86_64 Virtualmin version 3.90.gpl GPL Ubuntu 10.04 LTS (Lucid) A couple screenshots of top http://i.imgur.com/U2DTK.png http://i.imgur.com/sNPKs.png

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• Cannot install jdk 1.5 on Ubuntu 12.04

  - by u123

  I have installed Ubuntu 12.04.1 LTS (GNU/Linux 3.2.0-23-generic x86_64). Some info about the machine: $ grep --color "model name" /proc/cpuinfo model name : Intel(R) Xeon(R) CPU E5430 @ 2.66GHz model name : Intel(R) Xeon(R) CPU E5430 @ 2.66GHz model name : Intel(R) Xeon(R) CPU E5430 @ 2.66GHz model name : Intel(R) Xeon(R) CPU E5430 @ 2.66GHz I need to install jdk5 to support an old application. I have tried: ~$ sudo apt-get install openjdk-5-jdk Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package openjdk-5-jdk I have also tried: ~$ sudo apt-get install sun-java5-jdk Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package sun-java5-jdk So its not available in the repos. I have tried to follow this guide (adding the jaunty repos): http://leonardo-pinho.blogspot.dk/2010/11/java-15-no-ubuntu-1010.html but same result. Then I have tried to download jdk-1_5_0_22-linux-i586.bin from here: http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javase5-419410.html#jdk-1.5.0_22-oth-JPR and do: ~$ chmod a+x jdk-1_5_0_22-linux-i586.bin ~$ sudo ./jdk-1_5_0_22-linux-i586.bin Sun Microsystems, Inc. Binary Code License Agreement yes Unpacking... Checksumming... 0 0 Extracting... ./jdk-1_5_0_22-linux-i586.bin: 424: ./jdk-1_5_0_22-linux-i586.bin: ./install.sfx.19556: not found ./jdk-1_5_0_22-linux-i586.bin: 1: cd: can't cd to jdk1.5.0_22 Any suggestions?

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• mercurial hgwebdir error with basicauth in apache2

  - by Dio

  Hello, I'm having kind of a strange error that I'm trying to track down. I was trying to setup mercurial on my home server this weekend. I seem to have it running up to the point where I'm trying to get repositories published correctly. I'm running Ubuntu 10.04 LTS Mercurial Distributed SCM (version 1.4.3) I followed the hgwebdir guide: http://mercurial.selenic.com/wiki/HgWebDirStepByStep and everything seems to work great, I can pull and push my local repositories. Then I tried to add basic auth changing ScriptAliasMatch ^/hg(.*) /var/hg/hgwebdir.cgi$1 <Directory "/var/hg"> Options ExecCGI FollowSymLinks AllowOverride None </Directory> to ScriptAliasMatch ^/hg(.*) /var/hg/hgwebdir.cgi$1 <Directory "/var/hg"> Options ExecCGI FollowSymLinks AllowOverride None AuthType Basic AuthName hgwebdir AuthUserFile /usr/local/etc/httpd/users Require valid-user </Directory> This works exactly as I'd expect it to when I navigate to the directory via my web browser, but when I hg push get a long section repeating of File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain result = func(*args) File "/usr/lib/python2.6/urllib2.py", line 855, in http_error_401 url, req, headers) File "/usr/lib/python2.6/urllib2.py", line 833, in http_error_auth_reqed return self.retry_http_basic_auth(host, req, realm) File "/usr/lib/python2.6/urllib2.py", line 843, in retry_http_basic_auth return self.parent.open(req, timeout=req.timeout) followed by File "/usr/lib/pymodules/python2.6/mercurial/keepalive.py", line 249, in do_open self._start_transaction(h, req) File "/usr/lib/pymodules/python2.6/mercurial/url.py", line 419, in _start_transaction return keepalive.HTTPHandler._start_transaction(self, h, req) File "/usr/lib/pymodules/python2.6/mercurial/keepalive.py", line 342, in _start_transaction h.endheaders() File "/usr/lib/python2.6/httplib.py", line 904, in endheaders self._send_output() File "/usr/lib/python2.6/httplib.py", line 776, in _send_output self.send(msg) File "/usr/lib/pymodules/python2.6/mercurial/url.py", line 247, in _sendfile connection.send(self, data) File "/usr/lib/pymodules/python2.6/mercurial/keepalive.py", line 519, in safesend self.connect() File "/usr/lib/pymodules/python2.6/mercurial/url.py", line 273, in connect keepalive.HTTPConnection.connect(self) RuntimeError: maximum recursion depth exceeded while calling a Python object I'm a bit at a loss on this one. I'm really not sure why adding the authorization seems to work fine via my web browser but throw these errors from hg. Any help would be greatly appreciated.

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• How to make sysctl network bridge settings persist after a reboot?

  - by user183394

  I am setting up a notebook for software demo purpose. The machine has 8GB RAM, a Core i7 Intel CPU, a 128GB SSD, and runs Ubuntu 12.04 LTS 64bit. The notebook is used as a KVM host and runs a few KVM guests. All such guests use the virbr0 default bridge. To enable them to communicate with each other using multicast, I added the following to the host's /etc/sysctl.conf, as shown below net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 Afterwards, following man sysctl(8), I issued the following: sudo /sbin/sysctl -p /etc/sysctl.conf My understanding is that this should make these settings persist over reboots. I tested it, and was surprised to find out the following: root@sdn1 :/proc/sys/net/bridge# more *tables :::::::::::::: bridge-nf-call-arptables :::::::::::::: 1 :::::::::::::: bridge-nf-call-ip6tables :::::::::::::: 1 :::::::::::::: bridge-nf-call-iptables :::::::::::::: 1 All defaults are coming back! Yes. I can use some kludgy "get arounds" such as putting a /sbin/sysctl -p /etc/sysctl.conf into the host's /etc/rc.local but I would rather "do it right". Did I misunderstand the man page or is there something that I missed? Thanks for any hints. -- Zack

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• User can't SFTP after chroot

  - by Dauntless

  Ubuntu 10.04.4 LTS I'm trying to chroot the user 'sam'. According to all the tutorials out there this should work, but apparently I'm still doing something wrong. The user: sam:x:1005:1006::/home/sam:/bin/false I changed /etc/ssh/sshd_config like this (at the bottom of the file): #Subsystem sftp /usr/lib/openssh/sftp-server # CHROOT JAIL Subsystem sftp internal-sftp Match group users ChrootDirectory %h ForceCommand internal-sftp AllowTcpForwarding no I added sam to the users group: $groups sam sam : sam users I changed the permissions for sam's home folder: $ ls -la /home/sam drwxr-xr-x 11 root root 4096 Sep 23 16:12 . drwxr-xr-x 8 root root 4096 Sep 22 16:29 .. drwxr-xr-x 2 sam users 4096 Sep 23 16:10 awstats drwxr-xr-x 3 sam users 4096 Sep 23 16:10 etc ... drwxr-xr-x 2 sam users 4096 Sep 23 16:10 homes drwxr-x--- 3 sam users 4096 Sep 23 16:10 public_html I restarted ssh and now sam can't log in with SFTP. The session is created, but also closed immediately: Sep 24 12:55:15 ... sshd[9917]: Accepted password for sam from ... Sep 24 12:55:15 ... sshd[9917]: pam_unix(sshd:session): session opened for user sam by (uid=0) Sep 24 12:55:16 ... sshd[9928]: subsystem request for sftp Sep 24 12:55:17 ... sshd[9917]: pam_unix(sshd:session): session closed for user sam Cyberduck says Unexpected end of sftp stream. and other clients give similar errors. What did I forget / what is going wrong? Thanks!

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• Why the system information message when accessing an Ubuntu server doesn't match free -m?

  - by Andres

  Each time I SSH into my AWS Ubuntu servers I see a system information message, showing load, memory usage and packages available to install, like this: Welcome to Ubuntu 12.04.3 LTS (GNU/Linux 3.2.0-51-virtual x86_64) * Documentation: https://help.ubuntu.com/ System information as of Sun Nov 10 18:06:43 EST 2013 System load: 0.08 Processes: 127 Usage of /: 4.9% of 98.43GB Users logged in: 1 Memory usage: 69% IP address for eth0: 10.236.136.233 Swap usage: 100% Graph this data and manage this system at https://landscape.canonical.com/ 13 packages can be updated. 0 updates are security updates. Get cloud support with Ubuntu Advantage Cloud Guest http://www.ubuntu.com/business/services/cloud Use Juju to deploy your cloud instances and workloads. https://juju.ubuntu.com/#cloud-precise *** /dev/xvda1 will be checked for errors at next reboot *** *** System restart required *** My question is about the memory percentage shown. In this case, it's showing a 69% of memory usage, but since the swap usage was 100% I checked it by myself. So when I run free -m I get this: total used free shared buffers cached Mem: 1652 1635 17 0 4 29 -/+ buffers/cache: 1601 51 Swap: 895 895 0 And that's of course closer to 100% than to 69%

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• How do I install OpenStack on a single Ubuntu 12.04 node?

  - by Sam Edwards

  I'm having trouble installing OpenStack in Ubuntu 12.04, for various reasons: The official Ubuntu website recommends Juju and MAAS. However, this is a single node I am trying to get OpenStack installed on, and MAAS requires "two or more nodes" according to the docs. Additionally, I don't have any experience in MAAS and Juju and would rather stick to technologies I am more familiar with so that I can debug problems that arise. I have tried StackGeek but this fails because the node only has a single Ethernet port. The node does, however, have the second hard drive required for the nova storage. I have tried DevStack but cannot log into the dashboard. The login form appears fine, but as soon as I try to submit the page, my browser begins loading indefinitely. I have tried installing straight from packages, but I get an Internal Server Error in the dashboard upon trying to log in, with no helpful logs anywhere in sight to aid me in debugging the issue. Each of these attempts was with a fresh Ubuntu 12.04 LTS setup; I'm finding it really strange that no matter what I try, I cannot get OpenStack installed. Is this even a stable/mature project? Why am I encountering so many bugs?

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• r1soft agent is failing with the error: "write error while sending code: Broken pipe"

  - by curiousguy

  I have an Ubuntu 10.04.4 LTS server with r1soft agent installed in it. Recently, the backups are failing with the following error. -------- write error while sending code: Broken pipe -------- I have reinstalled the buagent but to no avail. On checking the server logs, I could see the following errors listed in it: -------- # tail -f /var/log/messages |grep -i buagent Nov 17 03:35:06 microscope buagent: Need to back up 126 sectors Nov 17 03:35:06 microscope buagent: (Righteous Backup Linux Agent) 1.79.0 build 12433 Nov 17 03:35:06 microscope buagent: allowing control from backup server (10.128.136.195) with valid RSA key Nov 17 03:35:06 microscope buagent: allowing control from backup server (10.128.136.201) with valid RSA key Nov 17 03:35:06 microscope buagent: sending auth challenge for allowed host at (10.128.136.201) port (47890) Nov 17 03:35:06 microscope buagent: host (10.128.136.201) port (47890) authentication successful Nov 17 03:35:06 microscope buagent: Backup request accepted. Starting backup. Nov 17 03:35:06 microscope buagent: Snapshot completed in 0.010 seconds. Nov 17 03:45:03 microscope buagent: Error reading blocks from snapshot. Nov 17 03:45:03 microscope buagent: Reading blocks failed Nov 17 03:45:03 microscope buagent: error backup aborted Nov 17 03:45:03 microscope buagent: backup failed on agent closing connection Nov 17 03:45:03 microscope buagent: Backup failed. Nov 17 03:45:03 microscope buagent: write error while sending code: Broken pipe (32) Nov 17 03:45:03 microscope buagent: tell child write failed -------- I tried changing the 'Timeout' and 'DiskAsPartition' value in '/etc/buagent/agent_config' file but no luck. Also, verified that proper route is added to the backup server. The agent is also running fine. Am I missing anything? Any help would be much appreciated. Note: CDP 2.0 is installed in the backup server.

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• Unable to access Windows share

  - by mbnoimi

  I've installed Alfresco 4.2.d under Ubuntu 12.04 LTS; Everything done fine except I can't access it from Windows share although I got the link from Alfresco explorer which is: file:///%5C%5CECSA%5CAlfresco%5CSites%5Cswsdp%5CdocumentLibrary%5CAgency%20Files%5CImages%5Ccoins.JPG I tried to access it from: \\ECSA but I failed too so I made a ping (192.168.0.70 is server IP) then I got: C:\Users\user>ping 192.168.0.70 Pinging 192.168.0.70 with 32 bytes of data: Reply from 192.168.0.70: bytes=32 time<1ms TTL=64 Reply from 192.168.0.70: bytes=32 time<1ms TTL=64 Reply from 192.168.0.70: bytes=32 time<1ms TTL=64 Reply from 192.168.0.70: bytes=32 time<1ms TTL=64 Ping statistics for 192.168.0.70: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms C:\Users\user>ping ECSA Ping request could not find host ECSA. Please check the name and try C:\Users\user> Some logs of what's going on: C:\Users\user>net view ECSA System error 1707 has occurred. The network address is invalid. C:\Users\user>nbtstat -a 192.168.0.70 Local Area Connection: Node IpAddress: [192.168.0.84] Scope Id: [] NetBIOS Remote Machine Name Table Name Type Status --------------------------------------------- ECSA <20> UNIQUE Registered ECSA <00> UNIQUE Registered WORKGROUP <00> GROUP Registered MAC Address = 00-00-00-00-00-00 C:\Users\user> CIFS Server Configuration in file-servers.properties ### CIFS Server Configuration - file-servers.properties ### cifs.enabled=true cifs.serverName=${localname}A cifs.domain= cifs.broadcast=255.255.255.255 cifs.bindto=192.168.0.70 cifs.ipv6.enabled=false cifs.hostannounce=true cifs.disableNIO=false cifs.disableNativeCode=false cifs.sessionTimeout=900 cifs.maximumVirtualCircuitsPerSession=16 cifs.tcpipSMB.port=445 cifs.netBIOSSMB.sessionPort=139 cifs.netBIOSSMB.namePort=137 cifs.netBIOSSMB.datagramPort=138 cifs.WINS.autoDetectEnabled=true cifs.WINS.primary=192.168.0.70 cifs.WINS.secondary=192.168.0.1 cifs.sessionDebug= cifs.pseudoFiles.enabled=true cifs.pseudoFiles.explorerURL.enabled=true cifs.pseudoFiles.explorerURL.fileName=__Alfresco.url cifs.pseudoFiles.shareURL.enabled=false cifs.pseudoFiles.shareURL.fileName=__Share.url How can I fix this issue?

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• High mysql server load, sar output

  - by eric

  I have a MySQL Server that should be performing better than it seems to be. We're running ubuntu on a Amazon Cluster Compute (cc1.4xlarge) Linux ip-10-0-1-60 3.2.0-25-virtual #40-Ubuntu SMP Wed May 23 22:20:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: 12.04 Codename: precise I have several output files from sar that i'm not really sure how to interpret. For example, I ran: # Individual block device I/O activities sar -d 1 180 > logs/block_device_io.log & which gave me what looks like really high utilisation of my disk (turns out this block device maps to /dev/xvdh on /var/lib/mysql type ext4 (rw,_netdev) The output from my log: 10:48:59 PM DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util 10:49:00 PM dev202-16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10:49:00 PM dev202-32 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10:49:00 PM dev8-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10:49:00 PM dev202-112 1008.00 31040.00 1416.00 32.20 1.02 1.01 0.89 90.00 10:49:00 PM dev202-80 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Am I wrong in thinking this is a problem? I have it above 90% almost the entire time we're seeing slowness. Or does this just mean MySQL is doing what it's supposed to do?

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• Network connection to Firebird 2.1 became slow after upgrading to Ubuntu 10.04

  - by lyle

  We've got a setup that we're using for different clients : a program connecting to a Firebird server on a local network. So far we mostly used 32bit processors running Ubuntu LTS (recently upgraded to 10.04). Now we introduced servers running on 64bit processors, running Ubuntu 10.04 64bit. Suddenly some queries run slower than they used to. In short: running the query locally works fine on both 64bit and 32bit servers, but when running the same queries over the network the 64bit server is suddenly much slower. We did a few checks with both local and remote connections to both 64bit and 32bit servers, using identical databases and identical queries, running in Flamerobin. Running the query locally takes a negligible amount of time: 0.008s on the 64bit server, 0.014s on the 32bit servers. So the servers themselves are running fine. Running the queries over the network, the 64bit server suddenly needs up to 0.160s to respond, while the 32bit server responds in 0.055s. So the older servers are twice as fast over the network, in spite of the newer servers being twice as fast if run locally. Apart from that the setup is identical. All servers are running the same installation of Ubuntu 10.04, same version of Firebird and so on, the only difference is that some are 64 and some 32bit. Any idea?? I tried to google it, but I couldn't find any complains that Firebird 64bit is slower than Firebird 32bit, except that the Firebird 2.1 change log mentions that there's a new network API which is twice as fast, as soon as the drivers are updated to use it. So I could imagine that the 64bit driver is still using the old API, but that's a bit of a stretch, I guess. Thanx in advance for any replies! :)

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• apache pointing to the wrong version of python on ubuntu how do I change?

  - by one

  I am setting up a flask application on and Ubuntu 12.04.3 LTS EC2 instance and everything seemed to be working well (i.e. I could get to the webpage via the publicly available url) until I tried to import a module (e.g. numpy) and realised the apache python differs from the one I used to compile the mod_wsgi and also the one I am using I am running apache2. The apache2 logs show the warnings (specifically the last line shows the path hasnt changed): [warn] mod_wsgi: Compiled for Python/2.7.5. [warn] mod_wsgi: Runtime using Python/2.7.3. [warn] mod_wsgi: Python module path '/usr/lib/python2.7/:/usr/lib/python2.7/plat-linux2:/usr/lib/python2.7/lib-tk:/usr/lib$ I have tried to set the path in my virtual host conf (my python is located in /home/ubuntu/anaconda/bin along with all of the other libraries): WSGIPythonHome /home/ubuntu/anaconda WSGIPythonPath /home/ubuntu/anaconda <VirtualHost *:80> ServerName xx-xx-xxx-xxx-xxx.compute-1.amazonaws.com ServerAdmin [email protected] WSGIScriptAlias / /var/www/microblog/microblog.wsgi <Directory /var/www/microblog/app/> Order allow,deny Allow from all </Directory> Alias /static /var/www/microblog/app/static <Directory /var/www/FlaskApp/FlaskApp/static/> Order allow,deny Allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> But I still get the warnings and the apache python path hasnt changed - where do I need to put the relevant directives to point apache at my python version and modules (e.g. scipy, numpy etc)? Separately, could I have avoided this using virtual environments? Thanks in advance.

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• ISPConfig dovecot status=bounced (user unknown)

  - by Ivan Dokov

  Before you point me to Google or serverfault search I want to tell you that I've searched a lot, did some "fixes". They didn't help. I have ISPConfig 3 installed on Ubuntu 12.04 LTS Server The server has several domains and lets call the main domain: example.com. I have also demo.com I have several emails on each domain. The status of the email sent between the emails: [email protected] - [email protected] (Success) [email protected] - [email protected] (Failure) The failure is with error: postfix/pipe[31311]: 8E72ED058D: to=<[email protected]>, relay=dovecot, delay=0.1, delays=0.03/0/0/0.07, dsn=5.1.1, status=bounced (user unknown) I saw the fix for removing the example.com from: mydestination = localhost, localhost.localdomain in /etc/postfix/main.cf It didn't help. Also an important thing is that the example.com MX records are Google's. We are using Google Apps for this domain in order to use Gmail servers. I think the problem is that the mail server is not looking for the MX records of the domain. It knows the domain is set on this server and it searches for the destination email on the local server, not on Google's servers. For several days I'm really lost! Thanks for your help in advance!

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• Acer Aspire One getting extremely hot

  - by ascom

  I have an Acer Aspire One D250-1197. I really better type fast before it overheats again... For some reason, I'm having a problem with heat on my netbook only when I run Joli OS (Ubuntu 9.10 LTS?). When I leave it idle, with nothing running (other than the regular Joli OS desktop and a couple of doing-nothing terminals), heat slowly builds up to the point where the netbook is burning hot to the touch. I have never had this problem when running Windows 7 Starter (even though it gives me plenty of other headaches). It seems that the fan is spinning, but not fast enough to keep up with the heat buildup. Is there something wrong with the fan drivers? The computer doesn't seem to recognize that it is overheating. What can I do to solve this problem (other than shut it off or use Windows)? I'm currently on the wrong side of Earth (I mean, on vacation), so I just need a temporary fix, such as a driver I can install. Also, I have to use Linux, because I have to share out the wired connection in hotels wirelessly to the iPhones. EDIT: I'm switching from Joli OS to a more "proper" and up to date distribution (Xubuntu 13.04). I'll see if it still has the heat problem and try @nod's cpufreq idea.

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• sql developer cannot establish connection to oracle db with listener running

  - by lostinthebits

  I am working from home and connected to my work's vpn. I have tried to connect to the work db with sql developer (the latest version and the previous version) on the following environments: mac os x 10.8.5 (with sql developer launched and installed directly on the iMac. sql developer launched and installed directly on a vm on same computer (guest Ubuntu 12.04 LTS) sql developer launched and installed directly on a vm on same computer (guest Windows 7.0 Professional) I get Status Failure Test Failed : IO Error - The Network Adapter could not establish the connection. I have read dba forums and googled and the most common suggestion is that the oracle listener is not up and running. I can conclusively say this is not the case because I have the option of using remote desktop and accessing the oracle db in question on my work computer. If the listener was down, according to my DBA, no one would be able to connect. My sysadmin and dba are stumped so I assume it is something unique to my home system. The reason I do not want to continue with the remote desktop workaround is because remote desktop has an annoying (infuriating often) lag.

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• RSA keys - virtual hosts

  - by Bosworth99

  Pardon my noobness, but I just got started with VPS (linux) hosting; setting up passwordless ssh for multiple users has proved to be kind of a pain. Currently I'm the single user of this ubuntu 10.04 LTS VPS (linode.com). I was able to establish a single rsa passkey under my home/user/.ssh/authorized_keys location. Fine. PuTTy works as expected, and Filezilla (sftp) links up as required. I've been working on a single site that this user owns, and thats not been a problem. Now, I want to set up some other sites, and I've chosen Webmin with the VirtualMin plugin to make this work. I made another user (or, rather, virtualmin did), but I've been unable to get FileZilla to link up to this new user. Could anyone with experience here explain what the setup is supposed to look like? IE - can I use a single rsa key pair for all accounts (if, for example, I give ownership of files to the original user?). Or is it standard practice to create a separate key pair for each user, and establish a separate putty/filezilla login for each? I've spent enough time dinking around with this to be frustrated. "Sever rejected the provided key" error sucks after the fifth hour. I'm about to set up an ftp server and call it a day. Any thoughts would be most welcome -

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• A separate user for each task?

  - by Mark Tomlin

  I just got a VPS sver the other day, I'm new to server administration, but not that new to Ubuntu (11.04). I use it in my living room as the HTPC, and I had a previous VPS that I used on and off for a team speak server. This one I'm setting up for long term use. So I would like to know the best practice when it comes to websites and tasks that I have the server proforming. I understand that it could be beneficial to separate each website into it's own usergroup or under its own username. I would setup nginx so that it could read all of the users directors (and thus each website) but could not touch anything else. The same with the TeamSpeak, should I make a user for TeamSpeak so that it operates within its own confined area or is this overkill? I do have access to root on the sever and my current plan is to run about 4 websites and a TeamSpeak server. My stack is Linux (Ubuntu 11.04 LTS), nginx, and PHP 5.4.3 (using the PDO SQLite 3 built in driver for the database). Should PHP have it's own user group or is it ok to place it in with nginx?

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• Migrating to Amazon AWS etc: What key statistics/questions should be analyzed and asked?

  - by cerd

  I searched SOverflow pretty extensively for something similar to this set of questions. BACKGROUND: We are a growing 'big(ish)' data chemical data company that are outgrowing our lab and our dedicated production workhorses. Make no mistake, we need to do some serious query optimization. Our data (It comes from a certain govt. agency so the schema and lack of indexing is atrocious). So yes, I know, AWS or EC2 is not a silver bullet in the face of spending time to maybe rework your queries/code entirely 'out of the box'. With that said I would appreciate any input on the following questions: We produce on CentOS and lab on Ubuntu LTS which I prefer especially with their growing cloud / AWS integration. If we are mysql centric, and our biggest problem is these big cartesian products that produce slow queries, should we roll out what we know after more optimization with respect to Ubuntu/mySQL with the added Amazon horsepower? Or is there some merit to the NoSQL and other technologies they offer? What are the key metrics I need to gather from apache and mysql other than like: Disk I/O operations, Data up/down avgs and trends and special high usage periods/scenarios? I've reviewed AWS/EC2 fine print, but want 2nd opinions. What other services aside from the basic web/database have proven valuable to you? I know nothing of Hadoop or many other technologies they offer, echoing my prev. question, do you sometimes find it worth it (Initially having it be a gamble aside from basic homework) to dive/break into a whole new environment and try to/or end up finding a way of more efficiently producing your data/site product? Anything I should watch out for in projecting costs, or any other general advice when working with AWS folks from anyone else where your company is very niche and very very technical (Scientifically - or anybody for that matter)? Thanks very much for your input - I think this thread could be valuable to others as well.

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• VMware virtual machine network devices malfunctioning

  - by sheepz

  I'm running Ubuntu 10.04 LTS and VMvware workstation 7.0.1 build-227600. The virtual machine i'm running in VMware is a custom distribution built on Debian Linux version 3.1. I'm still pretty much a beginner with UNIX administration. After having messed around with the vmware (changed only the name of the folder, the vmx and and other .v* files accordingly in which the .vmx was situated, and the configuration in the vmx file accordingly), the network devices on the virtual machine do not work anymore. The virtual machine is used for securely sending messages. The virtual machine: As far as I know, this perl file called proxy-gen-ifalias eth0 is responsible for properly setting up the two virtual network devices eth0 and eth1. The Virtual machine comes with a GUI interface in which I have set up two ethernet network devices, one internal, the other external. Now, after having messed around with this, the UI gives me this error message: perl proxy-gen-ifalias eth0 /etc/modprobe.d/alias-eth0 /sbin/update-modules perl proxy-gen-ifalias eth1 /etc/modprobe.d/alias-eth1 /sbin/update-modules ifdown eth0 ifdown: interface eth0 not configured ifdown eth1 ifdown: interface eth1 not configured perl proxy-gen-netcfg /etc/network/interfaces ifup eth0 SICCSIFADDR: No such device eth0: ERROR while getting interface flags: No such device SIOCSIFNETMASK: No such device eth0: ERROR while getting interface flags: No such device Failed to bring up eth0. ifconfig eth0 eth0: error fetching interface information: Device not found make: *** [/etc/network/interfaces] Error 1 ~ Here are the contents of the two perl files referred to in the message: paste.pocoo.org/show/2AMzAYhoCRZqlGY7wUFk/ proxy-gen-netcfg

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• Wordpress hacked. Disabled hacked site but bad traffic continues [closed]

  - by tetranz

  Possible Duplicate: My server's been hacked EMERGENCY My Ubuntu 10.04 LTS VPS has been hacked, probably via a WordPress site. I was alerted to it when I noticed the incoming traffic was unusually high. A WordPress site was littered with eval(base64_decode(...)) code in lots of files. My fault, I had some files writeable by www-data which shouldn't have been. I've disabled that site (a2dissite ... and restart Apache). This has reduced it but I am still getting some malware type traffic. My server runs several WordPress and Drupal sites and a home grown PHP site. I have captured traffic with tcpdump and looked at it Wireshark. It's reaching out to the login page of some Joomla sites, trying multiple logins. The traffic stops when I stop Apache. If I a2dissite every site and reload (not restart) Apache the traffic continues. At that point I have no virtual hosts running and no DocumentRoot in my apache2.conf so I don't know how Apache is still running something. I have searched the other sites with grep for likely looking php code with no success. I may have missed it but I haven't found anything suspicious in the Apache logs. I have mod-status running. I haven't really seen anything much there except that someone is still trying to do a POST to the theme page on the disabled WordPress site but they now get a 404. What should I be looking for? Are there any tools or whatever which would give me more info about how Apache is generating that traffic? Thanks

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