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• Can I shorten my directory commands in ubuntu?

  - by Spencer Cooley

  When working on a rails app I like to open all of my files through the command line like so cd my_app gedit app/views/user/show.html.erb Is there a way that I could shorten this so that I could just write something like gedit user_views/show.html.erb ? I would like the console to stay in the main directory, I just don't like having to type out app/controller/user_controler.rb every time I want to open the user controller. I know that I could just open the file with my mouse, but I feel like moving from keyboard to mouse breaks my focus a little bit. When I can just tap away at the keyboard it seems like I have a more smooth workflow.

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• nginx with stub_status.. need help with nginx.conf

  - by Amar

  Hello I am trying to setup nginx with stub status so I can monitor nginx requests etc.. with serverdensity.com. I needed to put something like this in nginx.conf server { listen 82.113.147.xxx; location /nginx_status { stub_status on; access_log off; allow 82.113.147.xxx; deny all; } } And with this monitoring acctualy works. However It seems I lost "include" part in my nginx.conf and now none of vhosts in sites-enabled work. Here is a bit more of my nginx.conf http { include /etc/nginx/mime.types; default_type application/octet-stream; server_tokens off; access_log /var/log/nginx/access.log; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_comp_level 2; gzip_proxied any; gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript; include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; server { listen 82.113.147.226; location /nginx_status { stub_status on; access_log off; allow 82.113.147.226; deny all; } } } Hope someone can help me with this , as I belive its minor issue, its just that "I dont see it" ty

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• s3cmd fails too many times

  - by alfish

  It used to be my favorite backup transport agent but now I frequently get this result from s3cmd on the very same Ubuntu server/network: root@server:/home/backups# s3cmd put bkup.tgz s3://mybucket/ bkup.tgz -> s3://mybucket/bkup.tgz [1 of 1] 36864 of 2711541519 0% in 1s 20.95 kB/s failed WARNING: Upload failed: /bkup.tgz ([Errno 32] Broken pipe) WARNING: Retrying on lower speed (throttle=0.00) WARNING: Waiting 3 sec... bkup.tgz -> s3://mybucket/bkup.tgz [1 of 1] 36864 of 2711541519 0% in 1s 23.96 kB/s failed WARNING: Upload failed: /bkup.tgz ([Errno 32] Broken pipe) WARNING: Retrying on lower speed (throttle=0.01) WARNING: Waiting 6 sec... bkup.tgz -> s3://mybucket/bkup.tgz [1 of 1] 28672 of 2711541519 0% in 1s 18.71 kB/s failed WARNING: Upload failed: /bkup.tgz ([Errno 32] Broken pipe) WARNING: Retrying on lower speed (throttle=0.05) WARNING: Waiting 9 sec... bkup.tgz -> s3://mybucket/bkup.tgz [1 of 1] 28672 of 2711541519 0% in 1s 18.86 kB/s failed WARNING: Upload failed: /bkup.tgz ([Errno 32] Broken pipe) WARNING: Retrying on lower speed (throttle=0.25) WARNING: Waiting 12 sec... bkup.tgz -> s3://mybucket/bkup.tgz [1 of 1] 28672 of 2711541519 0% in 1s 15.79 kB/s failed WARNING: Upload failed: /bkup.tgz ([Errno 32] Broken pipe) WARNING: Retrying on lower speed (throttle=1.25) WARNING: Waiting 15 sec... bkup.tgz -> s3://mybucket/bkup.tgz [1 of 1] 12288 of 2711541519 0% in 2s 4.78 kB/s failed ERROR: Upload of 'bkup.tgz' failed too many times. Skipping that file. This happens even for files as small as 100MB, so I suppose it's not a size issue. It also happens when I use put with --acl-private flag (s3cmd version 1.0.1) I appreciate if you suggest some solution or a lightweight alternative to s3cmd. Thanks

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• Cacti dskIndex RHEL

  - by andyh_ky

  I'm attempting to use includeAllDisks in my snmpd.conf for RHEL 4 and RHEL 5 machines, but no data is being returned on the Cacti Data Query. snmpwalk isn't giving me any results. $ snmpwalk -v 2c -c public 172.19.4.140 .1.3.6.1.4.1.2021.9.1.1 UCD-SNMP-MIB::dskIndex = No Such Instance currently exists at this OID If I add disk / to snmpd.conf snmpwalk gives me the right results. $ snmpwalk -v 2c -c public 172.19.4.140 .1.3.6.1.4.1.2021.9.1.1 UCD-SNMP-MIB::dskIndex.1 = INTEGER: 1 I am wanting to deploy this to many systems using the same snmpd.conf (via Satellite). The disk configuration varies among systems and manually configuring snmpd.conf is not an optimal solution. Is there a way to get includeAllDisks to work? My snmpd.conf file: rocommunity public <cacti server IP> dontPrintUnits true includeAllDisks

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• How to disable "sender non-delivery notification" in postfix?

  - by David MZ

  I want postfix to stop sending non-delivery notifications to my local account, here is example from my log 17:47:08 A727B62C6F61: message-id=<20121124174708.A727B62C6F61@mail.***********> 17:47:08 F151362C6F5F: sender non-delivery notification: A727B62C6F61 17:47:08 A727B62C6F61: from=<>, size=4676, nrcpt=1 (queue active) 17:47:08 F151362C6F5F: removed 17:47:08 warning: dict_nis_init: NIS domain name not set - NIS lookups disabled 17:47:08 A727B62C6F61: to=<**********>, relay=local, delay=0.01, delays=0/0.01/0/0, ... How can I configure this in my main.cf?

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• Debian and Multipath IO problem

  - by tearman

  Basically the situation is, I have a box running Debian, the box internally has an Intel SCSI RAID controller which is controlling 2 hard drives in RAID1 mode which is where the OS is installed. Further, I have a QLogic fiber channel adapter that connects the unit to a Fiber Channel SAN. My process of installation is I'll install Debian to the local drives, and leave the QLogic firmware out of it for the time being. Then once I get the unit online, I'll install the firmware drivers. This flops my internal drives from /dev/sda to /dev/sdc, which is a bit annoying, but recoverable. Probably should address these by UUID anyways. Once I get back online, I have to install multipath-tools (the framework is a multipath framework). However, once I reboot the machine again, it fails on boot after discovering multipath targets, saying my local drives are busy and cannot be mounted to /root. Any help in what may be the problem here? Or at least how to disable multipath until after the unit boots and then ignores the internal drives?

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• amanda backup problem

  - by hossam alkhalili

  hello, i installed amanda on centos 5.5 to backup windows 7 and windows server 2008 over network and i used 15 minutes instillation guide but when i type amcheck DailySet1 i got request failed then if i type amservice when i amandabackup account to define the problem i got Permission denied and on root account i got OPTIONS features=ff7fffff9cfeffffd3cf1300; i use zwc on windows 7 as an agent can anyone help me thanks -sh-3.2$ amcheck DailySet1 Amanda Tape Server Host Check Holding disk /dumps/amanda: 1791315968 KB disk space available, using 1791213568 KB slot 1: volume 'DailySet1-01' Will write to volume 'DailySet1-01' in slot 1. NOTE: skipping tape-writable test NOTE: conf info dir /etc/amanda/DailySet1/curinfo does not exist NOTE: it will be created on the next run. NOTE: index dir /etc/amanda/DailySet1/index does not exist NOTE: it will be created on the next run. Server check took 0.880 seconds Amanda Backup Client Hosts Check WARNING: jrcbs01.jrc.local: selfcheck request failed: Connection refused Client check: 1 host checked in 10.020 seconds. 1 problem found. amservice 192.168.1.1 bsdtcp noop [root@jrcbs01 ~]# amservice 192.168.1.5 bsdtcp noop

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• Mail troubleshooting

  - by Jason Swett

  I'm just trying to send myself an e-mail. On on Ubuntu using sendmail. For some reason, it doesn't work. Here's the command I'm running and what shows up when I run it: jason@ve:~$ echo "Subject: test" | /usr/lib/sendmail -v [email protected] [email protected]... Connecting to [127.0.0.1] via relay... 220 ve.5wrvhfxg.vesrv.com ESMTP Sendmail 8.14.3/8.14.3/Debian-9.1ubuntu1; Wed, 29 Dec 2010 13:51:49 -0800; (No UCE/UBE) logging access from: localhost.localdomain(OK)-localhost.localdomain [127.0.0.1] >>> EHLO ve.5wrvhfxg.vesrv.com 250-ve.5wrvhfxg.vesrv.com Hello localhost.localdomain [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-EXPN 250-VERB 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP >>> VERB 250 2.0.0 Verbose mode >>> MAIL From:<[email protected]> SIZE=14 250 2.1.0 <[email protected]>... Sender ok >>> RCPT To:<[email protected]> >>> DATA 250 2.1.5 <[email protected]>... Recipient ok 354 Enter mail, end with "." on a line by itself >>> . 050 <[email protected]>... Connecting to 205.186.165.157. via esmtp... 050 <[email protected]>... Deferred: Connection refused by 205.186.165.157. 250 2.0.0 oBTLpnEj012261 Message accepted for delivery [email protected]... Sent (oBTLpnEj012261 Message accepted for delivery) Closing connection to [127.0.0.1] >>> QUIT 221 2.0.0 ve.5wrvhfxg.vesrv.com closing connection It seems to me that the "Connection refused by 205.186.165.157" part is where things are going wrong, but I have no idea where or how to begin troubleshooting. Any advice?

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• CentOS Backup BASH Script

  - by user1062058

  I just wrote this script for backing up everything into a tar.gz file. Does it look okay? How can I get the tar file to transfer itself over to another server after executing? FTP from itself? I'm going to put this script into a weekly cron. #!/bin/bash rm ~/backup.tar.gz #removes old backup BACKUP_DIRS=$HOME #$HOME is builtin, it goes to /home/ and all child dirs tar -cvzf backup.tar.gz $BACKUP_DIRS # run tar -zxvf to extract backup.tar.gz Thanks.

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• SSL certificates work fine from command line but fails in script

  - by jrallison

  I'm trying to setup email notifications for my continuous integration server. I have a script which uses nail to send the email when the build works: #!/bin/bash echo "Build Worked!" | nail -A myisp -s 'Build Success' [email protected] When I run this from the command line with sh build-worked, it works and I receive the email. However, when I start the continuous integration server which executes the same script, I get the following error: nail: /opt/bitnami/common/lib/libssl.so.0.9.8: no version information available (required by nail) nail: /opt/bitnami/common/lib/libcrypto.so.0.9.8: no version information available (required by nail) Error with certificate at depth: 0 issuer = /C=ZA/ST=Western Cape/L=Cape Town/O=Thawte Consulting cc/OU=Certification Services Division/CN=Thawte Premium Server CA/[email protected] subject = /C=US/ST=California/L=Mountain View/O=Google Inc/CN=smtp.gmail.com err 20: unable to get local issuer certificate Continue (y/n)? could not initiate SSL/TLS connection: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed . . . message not sent. I must be messing some configuration, any ideas?

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• Installed ASUS HD4670, now unable to install ANY Debian due to low memory corruption

  - by Alfabravo

  I have a desktop PC which initially had the Intel D946gzis mobo, its chipset as video controller, some RAM and so. There I installed Debian without a problem alongside WindowsXP. I've bought an ASUS HD 4670 video card, installed it on the PC and now the installed Debian does not work, while the Ubuntu live CD refuses to run no matter if I set acpi, apic on or off... it throws me some low memory corruption at position just like shown here. With normal configuration, Debian throws kernel panic (keyboard lights blinking). Anyone have faced this before? Ideas? Thanks!! (meanwhile, debian hides in a virtualbox :'( ) Edited: Tried Ubuntu 9.10 x64 (due to the fact i've a core2duo at 2GHz) and it throws a kernel-panic to me (flashing caps and num LEDs). On screen, can be read different lines with things like: ... [ 1.957161] [] rb_erase+0xd6/0x160 [ 1.957266] [] page_fault+0x25/0x30 Could it be something about this new video card having ddr3?

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• Nighthacking with James Gosling

  - by Yolande Poirier

  Java Evangelist Stephen Chin is back on the road for a new NightHacking Tour. He is meeting with James Gosling at Kona, Hawaii, the launch base of the Wave Glider. The Glider is an aquatic robot which communicates real-time data from the surface of the ocean. It runs on an ARM chip using Java SE Embedded.  "During this broadcast we will show some of the footage of his aquatic robots, talk through the technologies he is hacking on daily, and do Q&A with folks on the live chat" explains Stephen Chin.  Sign up for the live stream on Wednesday, October 23rd at:  8AM Hawaii Time 11AM PST 2PM EST 20:00 CET Follow @nighthackingtv for the next Nighthacking events

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• How to remotely open gedit with SFTP URL in Gnome through SSH?

  - by Álvaro Justen

  My setup is weird and I can't change it now. I have two machines: local-machine: it's my desktop running Ubuntu with Gnome remote-machine: it's one virtual machine, also running Ubuntu but without X In both machines I have my private and public SSH keys. I need to run SSH from remote-machine to local-machine and run gedit (in local-machine, under the default $DISPLAY) but openning a file in remote-machine throught SFTP. Something like this: myuser@remote-machine:~$ ssh local-machine "DISPLAY=:0.0 gedit sftp://remote-machine/some/file" The command above doesn't work. gedit shows this message: Could not open the file sftp://remote-machine/some/file. gedit cannot handle sftp: locations. Note that: /some/file exists on remote-machine. I can SSH normally from remote-machine to local-machine using my SSH key without any problems! I can run the command DISPLAY=:0.0 gedit sftp://remote-machine/some/file in a terminal on local-machine and gedit opens the file on remote-machine without any problems - but the terminal in which I executed the command is running in DISPLAY :0 (really, it's gnome-terminal). I also tried -t option of SSH client (to force pseudo-tty allocation) but it didn't work. If I try to run DISPLAY=:0.0 gedit sftp://remote-machine/some/file in local-machine but under a tty (for example in tty1, by pressing <Ctrl>+<Alt>+<F1>) it doesn't not work - I get the same error when running from remote-machine. I found that if I pass the environment variable DBUS_SESSION_BUS_ADDRESS with a correct value, it works! So, if I do something like that: myuser@local-machine:~$ env | grep DBUS_SESSION_BUS_ADDRESS > env.txt myuser@local-machine:~$ scp env.txt remote-machine: and then: myuser@remote-machine:~$ ssh local-machine "DISPLAY=:0.0 $(cat env.txt) gedit sftp://remote-machine/some/file" it works! The problem is that I'm not on local-machine so I can't get the correct value for this env variable. Is there any other way to make this work?

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• XAMPP with PostgreSQL

  - by fred smith

  I'm looking for a package like XAMPP, but instead of MySQL it would use PostgreSQL. I've done some searching and haven't turned up anything other than doing a full server setup of both.

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• Thinking of Adopting the PRINCE2™ Project Management Methodology? Consider Using PeopleSoft Projects to Help

  - by Megan Boundey

  Ever wondered what the PRINCE2™ project management methodology is? Ever wondered if you could use PeopleSoft Projects (ESA) to manage your projects using PRINCE2™?  Published by the Office of Government Commerce in the UK, PRINCE2™ is a scalable, business case and product description-driven Project Management methodology based upon managing by exception. Project activities are organized around fulfilling and meeting the product description. Quality assurance, configuration control and risk management are all based upon ensuring that the product delivered accurately meets the product description. PRINCE2™ is built upon seven principles and seven themes, each underpinning the PRINCE2™project management processes. Important for today’s business environment, the focus throughout PRINCE2™ is on the Business Case, which describes the rationale and business justification for a project. The Business Case drives all the project management processes from initial project setup to successful finish. PRINCE2™, as a method and a certification, is adopted in many countries worldwide, including the UK, Western Europe and Australia. We’ve just released a new white paper, which provides you with an overview of the principles, themes and project management processes associated with PRINCE2™. It also shows how these map to the functionality available within PeopleSoft Projects (ESA). In the time it takes to drink a coffee, you can learn about PRINCE2™ and determine whether it might help you deliver better project results. We encourage you to take a look.

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• Thomas Kurian's COLLABORATE Keynote: Process not Product

  - by Aaron Lazenby

  Right off the bat, Oracle's Senior Vice President, Server Technologies Development made his purpose very clear: demonstrate how the elements of the Oracle product stack are evolving (and integrating) together. There are some great details about the new functionality of each Oracle application line and how the different products sync and interact. The lifecycle charts in Kurian's presentation illustrate how data can flow from an Oracle Demantra into Oracle E-Business Suite and back out to an Oracle Agile system to support value chain planning. With so many products at play in the enterprise, Kurian shows that if you trust that your systems can work together, IT strategy becoming much more about managing business process than managing software product.

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• How do I make some files on my machine accessible via HTTP using Apache?

  - by Lazer

  I did a wget on the source and built the apache binaries correctly. Now what do I need to do to get some documents accessible using HTTP (start some services?)? Also, do I need to group all the files I want to make accessible in some directory and make the directory and its contents accessible or can I just make the individual documents available? I will be providing these links to my colleagues and do not want them to be down, so need to make sure that the apache services are up automatically after a reboot. Does apache have some inbuilt support for this?

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• Don’t miss the Procurement AME New Features and Setup for Purchase Orders Webcast on December 6th and Follow up Live Chat

  - by MargaretW

  Webcast This one-hour session on December 6th is recommended for technical and functional users who are interested to know more about the new 12.1.3 features for Procurement with Approval Management Engine (AME). TOPICS WILL INCLUDE: Scope and limitations of AME functionality for purchase orders Setup and use of AME for purchase orders PO Review and PO E-Sign new features Demonstrations will be included See DocID 1456150.1 to sign up now! Live Chat There will be a live chat in the Procurement Community on December 13th for follow up questions and answers.  Join us to share and gain knowledge!

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• ssh_exchange_identification: Connection closed by remote host

  - by Charlie Epps

  First: $ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa $ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys Connecting to SSH servers gives this message: $ ssh -vvv localhost OpenSSH_5.3p1, OpenSSL 0.9.8m 25 Feb 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to localhost [127.0.0.1] port 22. debug1: Connection established. debug1: identity file /home/charlie/.ssh/identity type -1 debug1: identity file /home/charlie/.ssh/id_rsa type -1 debug3: Not a RSA1 key file /home/charlie/.ssh/id_dsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /home/charlie/.ssh/id_dsa type 2 ssh_exchange_identification: Connection closed by remote host My /etc/hosts.allow is as following: sshd: ALLOW /etc/hosts.deny is as following: ALL: ALL: DENY I have changed my /etc/ssh/sshd_conf as following: ListenAddress 0.0.0.0 Protocol 2 # HostKey for protocol version 1 #HostKey /etc/ssh/ssh_host_key # HostKeys for protocol version 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key RSAAuthentication yes PubkeyAuthentication yes #AuthorizedKeysFile .ssh/authorized_keys PasswordAuthentication no

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• Unicode paragraph end/line break breaking space / non breaking space aware text editor

  - by martinr

  I want one of those to write my blog articles with. I'm tired of manually converting breaks from rough notes to either paragraphs or line breaks for release as HTML, and tired of converting spaces to breaking or non-breaking ones. There are standard Unicode code points for the difference - what editor lets me use almost plain ASCII text but with builtin support and understanding for Unicode paragraph and non-breaking space characters? And ideally will let me save straight to either plain text UTF8 or to a file of plain HTML paragraphs?

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• VirtualBox guest responds to ping but all ports closed in nmap

  - by jeremyjjbrown

  I want to setup a test database on a vm for development purposes but I cannot connect to the server via the network. I've got Ubuntu 12.04vm installed on 12.04 host in Virtualbox 4.2.4 set to - Bridged network mode - Promiscuous Allow All When I try to ping the virtual guest from any network client I get the expected result. PING 192.168.1.209 (192.168.1.209) 56(84) bytes of data. 64 bytes from 192.168.1.209: icmp_req=1 ttl=64 time=0.427 ms ... Internet access inside the vm is normal But when I nmap it I get nothin! jeremy@bangkok:~$ nmap -sV -p 1-65535 192.168.1.209 Starting Nmap 5.21 ( http://nmap.org ) at 2012-11-15 18:39 CST Nmap scan report for jeremy (192.168.1.209) Host is up (0.0032s latency). All 65535 scanned ports on jeremy (192.168.1.209) are closed Service detection performed. Please report any incorrect results at http://nmap.org/submit/ Nmap done: 1 IP address (1 host up) scanned in 0.88 seconds ufw and iptables on VM... jeremy@jeremy:~$ sudo service ufw stop [sudo] password for jeremy: ufw stop/waiting jeremy@jeremy:~$ sudo iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination I have scanned around and have no reason to believe that my router is blocking internal ports. jeremy@bangkok:~$ nmap -v 192.168.1.2 Starting Nmap 5.21 ( http://nmap.org ) at 2012-11-15 18:44 CST Initiating Ping Scan at 18:44 Scanning 192.168.1.2 [2 ports] Completed Ping Scan at 18:44, 0.00s elapsed (1 total hosts) Initiating Parallel DNS resolution of 1 host. at 18:44 Completed Parallel DNS resolution of 1 host. at 18:44, 0.03s elapsed Initiating Connect Scan at 18:44 Scanning 192.168.1.2 [1000 ports] Discovered open port 445/tcp on 192.168.1.2 Discovered open port 139/tcp on 192.168.1.2 Discovered open port 3306/tcp on 192.168.1.2 Discovered open port 80/tcp on 192.168.1.2 Discovered open port 111/tcp on 192.168.1.2 Discovered open port 53/tcp on 192.168.1.2 Discovered open port 5902/tcp on 192.168.1.2 Discovered open port 8090/tcp on 192.168.1.2 Discovered open port 6881/tcp on 192.168.1.2 Completed Connect Scan at 18:44, 0.02s elapsed (1000 total ports) Nmap scan report for 192.168.1.2 Host is up (0.0017s latency). Not shown: 991 closed ports PORT STATE SERVICE 53/tcp open domain 80/tcp open http 111/tcp open rpcbind 139/tcp open netbios-ssn 445/tcp open microsoft-ds 3306/tcp open mysql 5902/tcp open vnc-2 6881/tcp open bittorrent-tracker 8090/tcp open unknown Read data files from: /usr/share/nmap Nmap done: 1 IP address (1 host up) scanned in 0.08 seconds Answer... Turns out all of the ports were open to the network. I installed open ssh and confirmed it. Then I edited my db conf to listen to external IP's and all was well.

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• Install notify-osd on Opensuse 11.2

  - by Rafael

  Is it possible to use the notify-osd instead of libnotify in Opensuse 11.2 ? if it's possible then how ? should i just install notify-osd over libnotify ?? Thanks in advance.

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• MaxStartups and MaxSessions configurations parameter for ssh connections?

  - by Webby

  I am copying the files from machineB and machineC into machineA as I am running my below shell script on machineA. If the files is not there in machineB then it should be there in machineC for sure so I will try copying the files from machineB first, if it is not there in machineB then I will try copying the same files from machineC. I am copying the files in parallel using GNU Parallel library and it is working fine. Currently I am copying 10 files in parallel. Below is my shell script which I have - #!/bin/bash export PRIMARY=/test01/primary export SECONDARY=/test02/secondary readonly FILERS_LOCATION=(machineB machineC) export FILERS_LOCATION_1=${FILERS_LOCATION[0]} export FILERS_LOCATION_2=${FILERS_LOCATION[1]} PRIMARY_PARTITION=(550 274 2 546 278) # this will have more file numbers SECONDARY_PARTITION=(1643 1103 1372 1096 1369 1568) # this will have more file numbers export dir3=/testing/snapshot/20140103 find "$PRIMARY" -mindepth 1 -delete find "$SECONDARY" -mindepth 1 -delete do_Copy() { el=$1 PRIMSEC=$2 scp david@$FILERS_LOCATION_1:$dir3/new_weekly_2014_"$el"_200003_5.data $PRIMSEC/. || scp david@$FILERS_LOCATION_2:$dir3/new_weekly_2014_"$el"_200003_5.data $PRIMSEC/. } export -f do_Copy parallel --retries 10 -j 10 do_Copy {} $PRIMARY ::: "${PRIMARY_PARTITION[@]}" & parallel --retries 10 -j 10 do_Copy {} $SECONDARY ::: "${SECONDARY_PARTITION[@]}" & wait echo "All files copied." Problem Statement:- With the above script at some point I am getting this exception - ssh_exchange_identification: Connection closed by remote host ssh_exchange_identification: Connection closed by remote host ssh_exchange_identification: Connection closed by remote host And I guess the error is typically caused by too many ssh/scp starting at the same time. That leads me to believe /etc/ssh/sshd_config:MaxStartups and MaxSessions is set too low. But my question is on which server it is pretty low? machineB and machineC or machineA? And on what machines I need to increase the number? On machineA this is what I can find - root@machineA:/home/david# grep MaxStartups /etc/ssh/sshd_config #MaxStartups 10:30:60 root@machineA:/home/david# grep MaxSessions /etc/ssh/sshd_config And on machineB and machineC this is what I can find - [root@machineB ~]$ grep MaxStartups /etc/ssh/sshd_config #MaxStartups 10 [root@machineB ~]$ grep MaxSessions /etc/ssh/sshd_config #MaxSessions 10

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• How to generate customized sudoers files in puppet depending on the environment they're deployed to?

  - by gozu

  the sysadmins are present in the sudoers files of all environments, but other sudoers are not. Different environments all have slightly different sudoers. Most of the time, 90% of users are the same, and 10% vary so we cannot have only one sudoers file for everything. Right now, we are using puppet with 10 different files with names like sudoers.production1, sudoers.production2, sudoers.production3, sudoers.testing1, sudoers.staging1 and so forth. Puppet then picks the file to deploy based on the server's $domain (ex: dbserver.staging1.acme.com) or $hardwaremodel. It works fine but it's a nightmare to maintain so many files. I'd like to autogenerate sudoers files based on the server's domain and have only one big file with all the sudoers permissions for all users and all environments. Something that looks like: User_Alias ADMINS = abe, bob, carol, dave case $domain { "staging1.acme.com" { #add dev1,dev2,tester1,tester2 to sudoers file } "testing2.acme.com" { #add tester1, tester3, tester4 to sudoers file } What's the best way to go about this? Suggestions for alternatives are welcome. I'd appreciate any tips. Update 1: For security reasons, we'd rather not concatenate a bunch of files from a folder located on a puppet client in case someone puts a file in there (maliciously or not) and either breaks the combined file or inserts something in it. Most importantly, for usability, we'd like to keep the number of sudoers related files (fragment or complete) on puppet server to either 3 (prod/stage/test) or preferably 1 file. this file would (somehow) generate sudoers files on the puppet server and send one customized file to each puppet client. The purpose of this would be only searching for a username in a single file and removing it quicker than doing it on 11 files. When adding a user to a bunch of environments, it won't be as quick, but only one file would need to be opened and looked at, greatly reducing the chances of an omission. our Sudo version is 1.6.9p8 so we can't use /sudoers.d folder, only a sudoers file.

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• how to resolve error in ubuntu

  - by Bipul

  i m using ubuntu 9.04. when i m running any command like sudo apt-get update ,i get following error message"E: Type 'l.com/ubuntu' is not known on line 45 in source list /etc/apt/sources.list E: The list of sources could not be read. ".due to this problem i m not able to download anything.please help

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