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Articles indexed Tuesday October 2 2012

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  • UIMenuController Custom Items

    - by Joshua
    I have created a UIMenuController and have set it a custom menu item like so: UIMenuController *menuController = [UIMenuController sharedMenuController]; UIMenuItem *item1 = [[UIMenuItem alloc] initWithTitle:@"Do This" action:@selector(item1)]; [menuController setMenuItems:[NSArray arrayWithObject:item1]]; But I wanted that object to be the only one to appear so I added this code: - (BOOL)canPerformAction: (SEL)action withSender: (id)sender { BOOL answer = NO; if (action == @selector(item1)) answer = YES; return answer; } The problem is it still shows other## Heading ## items, such as "Select", "Select All" and "Paste". This may have something to do with this being displayed in a UITextView. But how do I stop if from displaying all other items?

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  • What are the best open-source software non-profits for making financial contributions and/or facilitating useful work?

    - by Jason S
    I'm not a great programmer myself (my main job is more electrical engineering) and have never really helped out with any open source projects, but I've benefited greatly from free and/or open-source software (MySQL, OpenOffice, Firefox, Apache, PHP, Java, etc.) and at some point would like to make some modest financial contributions to help keep this stuff going. I'm wondering, what are the best non-profits to make financial contributions? I'm aware of: Open Source Initiative (founded 10 years ago by several prominent figures including programmer and "The Cathedral and the Bazaar" author Eric S. Raymond) Free Software Foundation Mozilla Foundation Apache Foundation Anyone have a particular favorite? Ideally I'd like to give money to a non-profit that would foster some of the smaller but promising open-source and/or free software projects. The big projects like Firefox and Apache are already well-established. There are a few small individual shareware programs I've already paid for directly. But it's those middle-ground projects that I would really like my contributions to support. (one that comes to mind is a good GUI for Subversion or Mercurial.) It's one thing for a single person to donate a little $$ to a small project. It's another for a foundation or something to give larger grants to projects that give a good bang for the buck. Conservation organizations like The Nature Conservancy, or the Trust for Public Lands, have really honed this approach, but I'm not really sure if there's an equivalent model in software-land.

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  • JavaScript Sucks.

    - by Matt Watson
    JavaScript Sucks. Yes, I said it. Microsoft's announcement of TypeScript got me thinking today. Is this a step in the right direction? It sounds like it fixes a lot of problems with JavaScript development. But is it really just duct tape and super glue for a programming model that needs to be replaced?I have had a love hate relationship with JavaScript, like most developers who would prefer avoiding client side code. I started doing web development over 10 years ago and I have done some pretty cool stuff with JavaScript. It has came a long ways and is the universal standard these days for client side scripting in the web browser. Over the years the browsers have become much faster at processing JavaScript. Now people are even trying to use it on the server side via node.js. OK, so why do I think JavaScript sucks?Well first off, as an enterprise web application developer, I don't like any scripting or dynamic languages. I like code that compiles for lots of obvious reasons. It is messy to code with and lacks all kinds of modern programming features. We spend a lot of time trying to hack it to do things it was never really designed for.Ever try to use different jQuery based plugins that require conflicting jQuery versions? Yeah, that sucks.How about trying to figure out how to make 20 javascript include files load quicker as one request? Yeah that sucks too.Performance? Let me just point to the old Facebook mobile app made with JS & HTML5. It sucked. Enough said.How about unit testing JavaScript? I've never tried it, but it sure sounds like fun.My biggest problem with JavaScript is code security. If I make some awesome product, there is no way to protect my code. How can we expect game makers to write apps in 100% JavaScript and HTML5 if they can't protect their intellectual property?There are compiling tools like Closure, unit test frameworks, minify, coffee script, TypeScript and a bunch of other tools. But to me, they all try to make up for the weaknesses and problems with JavaScript. JavaScript is a mess and we spend a lot of time trying to work around all of it's problems. It is possible to program in Silverlight, Java or Flash and run that in the browser instead of JavaScript, but they all have their own problems and lack universal mobile support. I believe Microsoft's new TypeScript is a step forward for JavaScript, but I think we need to start planning to go a whole different direction. We need a new universal client side programming model, because JavaScript sucks.

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  • how to best config for synflood setup in csf but web response still fast

    - by Binh Nguyen
    my server down random every day 4-5 time cause get high load very quick.. I have install csf and with some config server now stable.. load around 5. BUT the big isuse is : the real user very hard to access website specially from IE browser you can test at xaluan.com the flowing is config using in csf: SYNFLOOD = "1" SYNFLOOD_RATE = "100/s" SYNFLOOD_BURST = "10" CONNLIMIT = "80;30" PORTFLOOD = "80;tcp;70;5" CT_LIMIT = "29" # other config may same as default i playing around with this config for a week but still not work around.. If increase the rate SYNFLOOD_RATE = "140/s" or more.. the website response very fast.. be side have bad effect of server load increase so fast normal 20 and may be up to few hundred in peck time .. my need is response time fast but load still low.. please help thanks ps: server runing nginx frontend, apache, mysql, php ,, the home page has around 70 elements which will cached in browser in fist time access..

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  • When pointing to new DNS servers is there any chance of E-mails being lost if the old E-mail hosting service is still up?

    - by LaserBeak
    I am changing webhosts and will be using the new hosts mail servers instead of the old ones. I have created all the correctly named mailboxes on the new service but have also not yet cut ties with the old webhost. I am expecting that even if the new DNS values which point to the new hosts DNS servers and respective SOA\zone file with the new MX values have not yet propagated and an E-mail is directed at the old hosts mail servers as per the mx records in the SOA\zone records which the old hosting provider holds, the E-mail would still come through to the mailbox that's on the old host providers mail servers. So I am just trying to reaffirm if I got this right and it's essentially impossible for me to loose an E-mail since it will hit either the old hosts mail servers or the new ones ? Also is it possible to configure the same E-mail account to check and collect mail from different mail servers by entering multiple pop3 addresses ? And if I choose to keep the old web hosts mail hosting services as a backup by specifying the mx records for it with a lower priority in the SOA records hosted by the new webhost, is it possible to have any incoming E-mails sent to both servers by the mail daemon so I have two copies? Or is my only option having the primary mail server forward the E-mail somehow to the old mailserver ?

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  • Configure Nagios To Alert Depending On Host Group That Service Alert Originates From

    - by StrangeWill
    So my setup: Services are shared between all hosts (CPU/RAM/Disk/Services). Hosts are split into two main groups: "Production" and "Development". We have two contact groups: "Production" and "Development". Lets say my development SQL server runs low on RAM, I want it to only alert those in "Development" contact group (this service is of course assigned to a host in the "Development" host group, using the shared RAM monitoring service). I'm pretty much stumped on this... I can't configure it at the service level (they're shared there), and I can't seem to get escalations to do it for me either... Do I need to use service groups along with escalations and bite the bullet on building that list? Or am I missing something stupidly simple? I'm using Centreon for configuration if that helps.

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  • replica set with multiple primary nodes

    - by miguel
    I am trying to configure a replica set with three nodes: node A, B and C. I execute the rs.add()'s from node A and after that rs.status() shows that the three nodes are PRIMARY. Moreover node B and C have 0 pingMs. If I execute rs.status() from node B or C the only node listed is the self (As PRIMARY). I tried adding an arbiter but it didn't work (it behaved as the nodes B and C). I think this can be a networking problem but I can't figure it out. Edit: This is the output for netstat -anp|grep 27017: tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN - tcp 0 0 10.0.1.211:55772 10.0.1.213:27017 TIME_WAIT - tcp 0 0 127.0.0.1:50509 127.0.0.1:27017 ESTABLISHED - tcp 0 0 127.0.0.1:27017 127.0.0.1:50509 ESTABLISHED - tcp 0 0 10.0.1.211:55774 10.0.1.213:27017 TIME_WAIT - tcp 0 0 10.0.1.211:55776 10.0.1.213:27017 ESTABLISHED - tcp 0 0 10.0.1.211:39180 10.0.1.212:27017 ESTABLISHED - tcp 0 0 10.0.1.211:39178 10.0.1.212:27017 TIME_WAIT - tcp 0 0 10.0.1.211:39176 10.0.1.212:27017 TIME_WAIT - unix 2 [ ACC ] STREAM LISTENING 3291267 - /tmp/mongodb-27017.sock the private ips for the node B and C are 10.0.1.212 and 10.0.1.213 respectively (they appear to have an established connection in the 27017 port according to the netstat output).

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  • Default Gateway solution on NAT'd network (best options)

    - by kwiksand
    I've recently changed a network from a bunch of machines exposed to the net on a network to a more security conscious Firewall-fronted network with a DMZ for public services. Everything's mostly working perfectly now, but I've got the old problem of NAT Loopback where a machine within the LAN wants to access a public service via the public/external IP. I've solved this problem previously in a small/SOHO environment simply using NAT loopback features of the router in use or a simple iptables rule to do the same, but I want to make sure I make the most resilient choice with the least concern. It seems I can: Use iptables as I've said to DNAT and MASQUERADE the change source/destination so the connection works correctly i.e iptables -A PREROUTING -t nat -d ip.of.eth0.here -p tcp --dport 8080 -j DNAT --to 192.168.0.201:8080 iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -p tcp --dport 8080 -d 192.168.0.201 -j MASQUERADE Use split DNS, with internal mappings for public IP's Potentially do some route nastyness by setting the Default Gateway to use a different externally exposed IP to then come back in the public route (messy) Someone mentioned putting the Default Gateway within the DMZ as well (on serverfault), but I can't find the post again. I'm sure this is a common issue for many with NAT'd networks, but I've not really seen the perfect solve all when it comes to fixing this problem. What is your opinion?

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  • KVM virtual machine networking, NAT and bridge together

    - by stoqlt
    I have two running KVM guests on an Ubuntu (Lucid) host. One of them uses the simplest NAT method, and DHCP inside. The other uses the bridge method and static IP inside. Both work fine. Can I mix the networking methods? I'd like to create some set of scripts which used the local 192.168.122.x address, no matter if the guest has or not has an additional bridged LAN interface. Having eth0 and eth1 interfaces inside would be fine. Thanks for your interest.

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  • Nginx: Rewriting entire URI to query string

    - by Doug
    Still pretty new to nginx here, trying to get a simple rewrite to work, but the server just responds '404 not found' My server block server { listen 80; listen [::]:80; server_name pics.example.com; root /home/pics; rewrite ^(.*)$ index.php?tag=$1; location / { try_files $uri $uri/ $uri.php /index.html $uri =404; #try_files $uri =404; fastcgi_split_path_info ^([a-z]+)(/.+)$; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_pass unix:/tmp/php5-fpm.sock; fastcgi_index index.php; } location /doc/ { alias /usr/share/doc/; autoindex on; allow 127.0.0.1; deny all; } } pics.example.com/foobear should rewrite to pics.example.com/index.php?tag=foobear

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  • Passenger throwing undefined method `-@' for "master":String after Puppet 3.0.0 upgrade

    - by Andy Shinn
    My Puppet master is using Passenger to serve. After upgrading to Puppet 3.0.0 I am getting the following error: [ pid=17576 thr=70231398486460 file=utils.rb:176 time=2012-10-01 17:37:12.892 ]: *** Exception NoMethodError in PhusionPassenger::Rack::ApplicationSpawner (undefined method `-@' for "master":String) (process 17576, thread #): from config.ru:7 from /usr/lib/ruby/gems/1.8/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval' from /usr/lib/ruby/gems/1.8/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize' from config.ru:1:in `new' from config.ru:1 My config.ru is as follows: # a config.ru, for use with every rack-compatible webserver. # SSL needs to be handled outside this, though. # if puppet is not in your RUBYLIB: # $LOAD_PATH.unshift('/opt/puppet/lib') $0 = "master" # if you want debugging: # ARGV << "--debug" ARGV << "--rack" # Rack applications typically don't start as root. Set --confdir to prevent # reading configuration from ~/.puppet/puppet.conf ARGV << "--confdir" << "/etc/puppet" # NOTE: it's unfortunate that we have to use the "CommandLine" class # here to launch the app, but it contains some initialization logic # (such as triggering the parsing of the config file) that is very # important. We should do something less nasty here when we've # gotten our API and settings initialization logic cleaned up. # # Also note that the "$0 = master" line up near the top here is # the magic that allows the CommandLine class to know that it's # supposed to be running master. # # --cprice 2012-05-22 require 'puppet/util/command_line' # we're usually running inside a Rack::Builder.new {} block, # therefore we need to call run *here*. run Puppet::Util::CommandLine.new.execute Any idea what may be happening?

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  • When will ANACRONTAB run cron.daily?

    - by johnsam
    My RHEL has the following anacrontab config file, it has START_HOURS_RANGE and RANDOM_DELAY both missing, what hour does cron.daily start everyday? My guess is it is random. Is it true? # /etc/anacrontab: configuration file for anacron # See anacron(8) and anacrontab(5) for details. SHELL=/bin/sh PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root 1 65 cron.daily run-parts /etc/cron.daily 7 70 cron.weekly run-parts /etc/cron.weekly 30 75 cron.monthly run-parts /etc/cron.monthly

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  • How to enable "Sleep" for Windows 2012 server

    - by Ramesh
    I recently installed Windows Server 2012. This will serve as the dev-instance for our engineers and will be accessed in multiple time zones. I therefore plan to run this 24x7 but want to conserve energy by going to sleep mode when not in use & enable Wake-On-Magic-Packet. Based on the previous post it appears that there is no option to sleep Win Server 2012 with Hyper-V. Since I don't care much about virtualization now, I uninstalled Hyper-V. In addition to this, I have done the following 1) Ran powercfg -a. Don't find sleep. 2) Added [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hvboot] "Start"=dword:00000003 to try gaining sleep - no luck! 3) Only see Shutdown and Restart in power options. Please help me sleep and save the planet :-) Thanks, Ramesh

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  • hadoop: port appears open locally but not remotelly

    - by miguel
    I am new to linux and hadoop and I am having the same issue as in this question. I think I understand what is causing it but I don't know how to solve it (Don't know what they mean by "Edit the Hadoop server's configuration file so that it includes its NIC's address."). The other post that they link says that the configuration files should refer to the machine's externally accessible host name. I think I got this right as every hadoop configuration file refers to "master" and the etc/hosts file lists the master by its private IP address. How can I solve this? Edit: I have 5 nodes: master, slavec, slaved, slavee and slavef all running debian. This is the hosts file in master: 127.0.0.1 master 10.0.1.201 slavec 10.0.1.202 slaved 10.0.1.203 slavee 10.0.1.204 slavef this is the hosts file in slavec (it looks similar in the other slaves): 10.0.1.200 master 127.0.0.1 slavec 10.0.1.202 slaved 10.0.1.203 slavee 10.0.1.204 slavef the masters file in master: master the slaves file in master: master slavec slaved slavee slavef the masters and slaves file in slavex has only one line: slavex

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  • Dynamic group membership to work around no nested security group support for Active Directory

    - by Bernie White
    My problem is that I have a number of network administration applications like SAN switches that do not support nested groups from Active Directory Domain Services (AD DS). These legacy administration applications use either LDAP or LDAPS. I am fairly sure I can use Active Directory Lightweight Directory Services (AD LDS) and possibly Windows Authorization Manager to work around this issue; however I am not really sure where to start. I want to end up with: A single group that can be queried over LDAP/LDAPS for all it’s direct members LDAP proxy for user name and password credentials to AD DS Easy way to admin the group, ideally the group would aggregate the nested membership in AD DS. a native solution using freely available components from the Windows stack. If you have any suggestions or solutions that you have previously used to solve this issue please let me know.

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  • Does DKIM works with subdomains?

    - by Feelsgoodman
    ISP's recommend you segment your marketing and transactional emails by using different IPs. I want to start using DKIM, but since DKIM is a domain based reputation system I wonder if signing with the same company.com domain will impact the reputation of transactional emails, since both them and marketing will be signed with the same domain? Is using DKIM with subdomains possible? Would something like this: bulk.company.com and transactional.company.com be a good idea? Thanks!

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  • Amazon EC2 EBS volume scheduled backup/snapshots using puppet / similar tools

    - by Ehrann Mehdan
    I am not a Linux admin, although I wish I was, and I have seen these questions Amazon EC2 Backup Strategy Amazon EC2 + EBS:: Regular backup plan? Simple Backup Strategy for Amazon EC2 instances / volumes? And this suggestion http://alestic.com/2009/09/ec2-consistent-snapshot I tried using command line + crontab (the command line works, but crontab for some reason, doesn't) But I'm still pretty lost, all I want is an automated, rolling backup of my amazon EC2 (EBS) data (by rolling I mean keep 3-4 weeks back, but delete old snapshots as new ones come for cost control) And as things usually go, if there is something that is hard and painful, someone creates a solution for it. My question is simple, is there a way using a tool like Puppet to do it without a painful learning curve? (or via other tools like http://ylastic.com) If yes, how?

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  • How can I set up a 404 error page when people access http://ftp.mydomain.com?

    - by Tim B.
    I am a freelance videographer/developer, and part of my job involves transferring large files over FTP to production houses/television stations. While the majority of people in my industry understand the difference between FTP and HTTP, I've experienced several interactions in the past couple months of people who still open Internet Explorer and try to access http://ftp.mydomain.com, receive an error page served by HostGator, and tell me that they cannot access my FTP server. Instead of spending time delivering instructions via e-mail, I'd much prefer to serve up a custom error page in this instance that instructs them how to download and use an FTP client. I tried setting up a sub-domain in Cpanel hoping I could simply drop in an .htaccess file with the error page, but I got this error: ftp.mydomain.com domainadmin-domainexistsglobal I also tried creating a custom error page in PHP which reads the site URL and serves up the custom content only when http://ftp.mydomain.com is accessed. Unfortunately, the error page works for every subdomain except that one. I'm not entirely sure this is even technically possible, which is why I bring it to the good people of StackOverflow to help. Thanks!

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  • Azure can't ping or telnet VM from client

    - by Raif
    I have a VM on Azure with an instance sqlserver 2012 running on it. From my work computer and my home computer I can't get sqlserver management studio connect to it. I have looked at ALL the settings recommended in numerous articles. everything is setup correctly. endpoint 1433 Private and public sqlserver tcp enabled. sqlserver tcp listening on right port sqlserver using mixed auth windows fire wall, holes poked and then disabled on both client and VM can log in from VM using the credentials that I'm trying to use remotely further more I can't ping the dns or ip or tellnet address from my local machines. I can however hit the iis from a browser using the ip. strange. CS asked me to download MS Network Monitor, which I did and pinged and telneted. I have the results saved but can't really make heads or tails of them. CS hasn't responded yet. I can post some info here that would help. EDIT Never one to shrink from a challenge, I deleted my VM and re-did everything. Now it works although my confidence azure is somewhat shaken.

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  • Wiping out user and/or root password in embedded linux

    - by TryTryAgain
    We have a security camera system running an embedded linux. It boots with Lilo as a bootloader and has no tty access once booted. I don't know any username either. SSH/22 is open, but I don't think brute force is an option. I have tried all the common tricks to reset a linux user password (boot from the bootloader in single user mode = doesn't happen, still prompts for user login, boot to a live cd = can't access the file system...it's all loop files and other binary, etc etc), but they are all not possible as it is an embedded linux setup the way it is. Any help/suggestions would be appreciated. Thanks

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  • Opening and Testing Ports on Modem > Router Connection

    - by JakeTheSnake
    Working off of my last question, I can access my server's FTP over the LAN but not over the internet. I'm using Filezilla on port 666. My router/modem configuration is as such (similar to other post): 1) Modem connects to WAN 2) WAN port on modem connects to LAN port on Router 3) Modem internal IP address is 192.168.0.254 4) Router internal IP address is 192.168.0.1 5) Modem has DHCP turned OFF 6) Router has DHCP turned ON 7) Router is running Tomato firmware and it's set as 'Router' (not 'Gateway') 8) The internet is working (just had to say that) I've set up port forwarding both on the modem and router - both route port 666 to the IP address of 192.168.0.3 (TCP); that is the IP address of the server which has FileZilla running. I don't know if that's hindering anything but I've also tried it with just the modem and just the router...same result. I've also tried setting the server to be DMZ (both on router and modem). Neither router nor modem have anything in their logs about denying inbound traffic on port 666 so my ability to troubleshoot stops there. I've tried contacting my ISP (Telus, running on mobility plan...it's a "Smart" Hub) but they weren't much help. They said they only block port 25 and 80 and maybe a few others, but not most ports. I test whether or not the port is open by going to canyouseeme.org - I don't know whether or not that would produce a 'connection refused' result just based on the fact that the FTP requires a login...I'm not well versed on this matter. FWIW, sometimes I get a 'connection refused' error on canyouseeme.org but mostly it's 'connection timed out'. I don't know what else to do at this point.

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  • Email delivery error

    - by Tim
    I sent an email, but immediately got a reply saying: Final-Recipient: rfc822;[email protected] Action: failed Status: 5.0.0 (permanent failure) Diagnostic-Code: smtp; 5.1.2 - Bad destination host 'DNS Hard Error looking up smtpint.xxx.edu (MX): NXDomain' (delivery attempts: 0) I was wondering what this error report means, where in the delivery route the error happened, who should be contacted to solve this issue and how to solve it? Thanks and regards! I also appreciate if someone can explain a bit more about the mechanism behind the email delivery.

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  • Login failed for user 'XXX' on the mirrored sql server

    - by hp17
    We have 4 web servers that host our asp.net (3.5) application. Randomly, we get error messages like : 1) "Login failed for user 'userid'" 2) "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)" we are running sql2005 and have a principle and a mirror db (sync). When these exceptions are thrown, I look at the SQL error logs on the mirrored db and noticed the failed login messages in there. The principle db is running fine and the other web apps are working great. this will happen for maybe 10 min, then the app pool recycles and it starts hitting the principle db again. Is there a configuration I have incorrect? my theory is that our principle db is forwarding the request to the mirror, but that should never happen. any help??

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  • Instabilities with Bridged and bonded interfaces

    - by Henry-Nicolas Tourneur
    I did post yesterday to get a working setup with several bridged interfaces used for virtual machines (KVM/libvirt). One of the bridged interface is just using eth3 as its ports while the second one (public traffic) is using an ethernet bonded interface. That setup is working but not all the time ! I can start a download from a vm, then it will stop and freeze! So I don't know if my bridge parameters are correct, could you check the below config ? iface eth3 inet manual auto bond0 iface bond0 inet manual slaves eth1 eth2 pre-up ip link set bond0 up down ip link set bond0 down auto br0 iface br0 inet static address 10.160.0.7 netmask 255.255.255.128 bridge_ports eth3 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp on auto br0:1 iface br0:1 inet static address 10.160.0.9 netmask 255.255.255.255 auto br0:2 iface br0:2 inet static address 10.160.0.10 netmask 255.255.255.255 auto br1 iface br1 inet static address 217.4.40.242 netmask 255.255.255.240 gateway 217.4.40.241 pre-up /etc/network/firewall start bridge_ports bond0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp on auto br1:1 iface br1:1 inet static address 217.4.40.252 netmask 255.255.255.255 auto br1:2 iface br1:2 inet static address 217.4.40.253 netmask 255.255.255.255 And yes, it also sometimes speaks about martian on the host: kernel: [249146.055172] martian source 10.160.0.17 from 10.160.0.10, on dev vnet2 kernel: [249146.073122] ll header: ff:ff:ff:ff:ff:ff:54:52:00:76:c3:5c:08:06

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  • MS Access: Why can I no longer right-click to add a hyperlink?

    - by gef05
    I've been working in an MS Access system for a while now. It's a form system where users enter data, add links, contacts etc. Pretty simple. On the form is a hyperlink field. For months I could right-click the field, and from the popup context menu select Hyperlink Add a hyperlink (something like that). This would allow me to browse to a network location, select a folder, click okay, and have the path automatically added to the field. Then it stopped working. It works fine for everyrone else but not me. What's stranger, if I go to another machine and login, I get the functionality back. Any ideas?

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