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  • Ubuntu - why would /var/log/dmesg stop updating after boot? does not show panic/cpu_hung errors which the console shows

    - by Tom G
    So I have an Ubuntu 10.04 install VM on a host. Latest 2.6.38-15-server kernel . /var/log/dmesg displays only the bootup but will stop recording after that. It will not show the trace/cpu_hung errors I am trying to troubleshoot. /var/log/dmesg.0 , dmesg.1 nothing - I did a string search for the text that displays on the console during the crash and NOTHING gets logged anywhere in /var/log/* . I have to call into the provider and ask them to take a screenshot of the console since nothing shows in dmesg. Why would /var/log/dmesg not record kernel panics, or such?

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  • NGINX : Proxy pass intercepting 5xx errors - Possible to differentiate between ones fired by backed vs ones fired by nginx itself?

    - by anonymous-one
    We use proxy_intercept_errors ( http://wiki.nginx.org/HttpProxyModule#proxy_intercept_errors ) with our backends. We intercept a number of status codes, including a few 5xx ones. Our 5xx (each 500 has its own) handler has an access_log so we can see all the 5xx errors returned to the user in a nice clean logged format. The issue with this is that as it stands now, we cannot tell weather a 5xx was returned to the user by nginx or intercepted from our backend. Is there any way to differentiate between the two? Thanks.

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  • How to style content in jQuery Facebox

    - by musoNic80
    I'm using jQuery Facebox plugin to create some modal windows. One situation is to display errors that might occur. If JS is disabled, I do this by displaying any errors in a normal div that is styled by CSS using a class selector. If the user does have JS enabled however, that div is hidden and the info is displayed in a facebox. The problem I have is that all the CSS styling is lost when the data is displayed within a facebox window. I understand that you can attach extra classes if you're calling facebox from a rel attribute in an anchor tag, but I'm using it programatically. Is there a way I can bind something to the facebox method? Here's my js code (the HTML should be self-explanatory): $(document).ready(function() { $(".errors").hide(); // hides the non-js error div $.errors = $(".errors").html(); // get the html from the error div if($.errors!==''){ $.facebox($.errors); // if there are any errors, display them in facebox } });

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  • How to avoid Master Browser errors, MRxSmb Event ID 8003?

    - by Sanoj
    I have a domain with Windows SBS 2003 as domain controller. It's very common to get Master Browser errors in the logs, MRxSmb Event ID 8003. How can I avoid that? What have I done wrong? I know how to solve this: Stop the Computer Browser service on clients, but I don't know how to avoid this since the problem comes back every time I add a new client and I forget to stop the Computer Browser service. Error message: The master browser has received a server announcement from the computer [computer] that believes that it is the master browser for the domain on transport NetBT_Tcpip_{#######-####-####-#. The master browser is stopping or an election is being forced. Is there an configuration of the server to avoid this problem?

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  • How come ftp protocol produces transmission errors sometimes if the data is using TCP, which is checksummed?

    - by Cray
    Every once in a while, downloading (especially large) files through ftp will produce errors. I am guessing that's also partly the reason why all major sites are publishing external checksums along with their downloads. How is this possible if ftp goes through TCP, which has checksum inbuilt and resends data if it is transmitted corruptly? One could argue that this is due to the short length of the CRC in the TCP protocol (which is 16bit I think, or something like that), and the collisions are simply happening too often. but 1) for this to be true, not only must there be a CRC collision, but also the random network error must modify both the CRC in the packet, and the packet itself so that the CRC will be valid for the new packet... Even with 16 bitCRC, is that so likely? 2) There are seemingly not many errors in, say, browsing the web which also goes through TCPIP.

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  • What CPAN module can send all warnings and errors to a log file?

    - by mithaldu
    I'm maintaining some website code that currently dumps all errors and warnings into the apache log. This is a problem for me as i cannot access that due to lack of root. As such I am looking to redirect all warnings and errors to a specified log file under my control. I'd like to do so without preventing those messages from going through their usual patch of execution. Now, before i spend a lot of time fiddling with the Perl internals and possibly breaking things unawares I thought I'd look for a CPAN module that does this. However, I either do not know how to properly search for this, or I am overlooking something and thus cannot find any module that seems suitable. Thus my asking here: What CPAN module would i use for this task?

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  • IPTables masquerading with one NIC

    - by Tuinslak
    Hi, I am running an OpenVPN server with only one NIC. This is my current layout: public.ip > Cisco firewall > lan.ip > OpenVPN server lan.ip = 192.168.22.70 The Cisco firewall forwards the requests to the oVPN server, thus so far everything works and clients are able to connect. However, all clients connected should be able to access 3 networks: lan1: 192.168.200.0 (vpn lan) > tun0 lan2: 192.168.110.0 (office lan) > eth1 (gw 192.168.22.1) lan3: 192.168.22.0 (server lan) > eth1 (broadcast network) So tun0 is mapped to eth1. Iptables output: # iptables-save # Generated by iptables-save v1.4.2 on Wed Feb 16 14:14:20 2011 *filter :INPUT ACCEPT [327:26098] :FORWARD DROP [305:31700] :OUTPUT ACCEPT [291:27378] -A INPUT -i lo -j ACCEPT -A INPUT -i tun0 -j ACCEPT -A INPUT -i ! tun0 -p udp -m udp --dport 67 -j REJECT --reject-with icmp-port-unreachable -A INPUT -i ! tun0 -p udp -m udp --dport 53 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -d 192.168.200.0/24 -i tun0 -j DROP -A FORWARD -s 192.168.200.0/24 -i tun0 -j ACCEPT -A FORWARD -d 192.168.200.0/24 -i eth1 -j ACCEPT COMMIT # Completed on Wed Feb 16 14:14:20 2011 # Generated by iptables-save v1.4.2 on Wed Feb 16 14:14:20 2011 *nat :PREROUTING ACCEPT [302:26000] :POSTROUTING ACCEPT [3:377] :OUTPUT ACCEPT [49:3885] -A POSTROUTING -o eth1 -j MASQUERADE COMMIT # Completed on Wed Feb 16 14:14:20 2011 Yet, clients are unable to ping any ip (including 192.168.200.1, which is the oVPN's IP) When the machine was directly connected to the internet, with 2 NICs, it was quite simply solved with masquerading and adding static routes in the oVPN client's config. However, as masquerading won't accept virtual interfaces (eth0:0, etc) I am unable to get masquerading to work again (and I'm not even sure whether I need virtual interfaces). Thanks. Edit: OpenVPN server: # ifconfig eth1 Link encap:Ethernet HWaddr ba:e6:64:ec:57:ac inet addr:192.168.22.70 Bcast:192.168.22.255 Mask:255.255.255.0 inet6 addr: fe80::b8e6:64ff:feec:57ac/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6857 errors:0 dropped:0 overruns:0 frame:0 TX packets:4044 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:584046 (570.3 KiB) TX bytes:473691 (462.5 KiB) Interrupt:14 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:334 errors:0 dropped:0 overruns:0 frame:0 TX packets:334 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:33773 (32.9 KiB) TX bytes:33773 (32.9 KiB) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:192.168.200.1 P-t-P:192.168.200.2 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) ifconfig on a client: # ifconfig eth0 Link encap:Ethernet HWaddr 00:22:64:71:11:56 inet addr:192.168.110.94 Bcast:192.168.110.255 Mask:255.255.255.0 inet6 addr: fe80::222:64ff:fe71:1156/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3466 errors:0 dropped:0 overruns:0 frame:0 TX packets:1838 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:997924 (974.5 KiB) TX bytes:332406 (324.6 KiB) Interrupt:17 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:37847 errors:0 dropped:0 overruns:0 frame:0 TX packets:37847 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2922444 (2.7 MiB) TX bytes:2922444 (2.7 MiB) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:192.168.200.30 P-t-P:192.168.200.29 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:689 errors:0 dropped:18 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 B) TX bytes:468778 (457.7 KiB) wlan0 Link encap:Ethernet HWaddr 00:16:ea:db:ae:86 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:704699 errors:0 dropped:0 overruns:0 frame:0 TX packets:730176 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:520385963 (496.2 MiB) TX bytes:225210422 (214.7 MiB) static routes line at the end of the client's config (I've been playing around with the 192.168.200.0 -- (un)commenting to see if anything changes): route 192.168.200.0 255.255.255.0 route 192.168.110.0 255.255.255.0 route 192.168.22.0 255.255.255.0 route on a vpn client: # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.200.29 0.0.0.0 255.255.255.255 UH 0 0 0 tun0 192.168.22.0 192.168.200.29 255.255.255.0 UG 0 0 0 tun0 192.168.200.0 192.168.200.29 255.255.255.0 UG 0 0 0 tun0 192.168.110.0 192.168.200.29 255.255.255.0 UG 0 0 0 tun0 192.168.110.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.110.1 0.0.0.0 UG 0 0 0 eth0 edit: Weirdly enough, if I set push "redirect-gateway def1" in the server config, (and thus routes all traffic through VPN, which is not what I want), it seems to work.

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  • OpenVPN Server Ethernet Bridging Question

    - by Hooplad
    Hello All, I am having a difficult time properly configuring an ethernet bridge using OpenVPN 2.0.9 install on CentOS 5 ( VPN server ). The goal that I am trying to complete is to connect a VM ( instance running on the same CentOS machine ) acting as a Microsoft Business Contact Manager server. I would then like this "BCM server" to serve Windows XP clients on 192.168.1.0/24 network as well as clients connecting from VPN ( 10.8.0.0/24 ). The setup as it is now was based off a known working configuration. The problem with the working configuration was that it would allow to the client to connect and access everything running on the VPN server ( SVN, Samba, VM Server ) but not any computers on the 192.168.1.0/24 network. I must disclose that the VPN server is behind a router/firewall. Ports are being forwarded correctly ( again, clients were able to connect to the VPN server with no problem. netcat confirms the udp port is open as well ). current ifconfig output br0 Link encap:Ethernet HWaddr 00:21:5E:4D:3A:C2 inet addr:192.168.1.169 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::221:5eff:fe4d:3ac2/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:846890 errors:0 dropped:0 overruns:0 frame:0 TX packets:3072351 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:42686842 (40.7 MiB) TX bytes:4540654180 (4.2 GiB) eth0 Link encap:Ethernet HWaddr 00:21:5E:4D:3A:C2 UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:882641 errors:0 dropped:0 overruns:0 frame:0 TX packets:1781383 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:82342803 (78.5 MiB) TX bytes:2614727660 (2.4 GiB) Interrupt:169 eth1 Link encap:Ethernet HWaddr 00:21:5E:4D:3A:C3 UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:650 errors:0 dropped:0 overruns:0 frame:0 TX packets:1347223 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:67403 (65.8 KiB) TX bytes:1959529142 (1.8 GiB) Interrupt:233 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:17452058 errors:0 dropped:0 overruns:0 frame:0 TX packets:17452058 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:94020256229 (87.5 GiB) TX bytes:94020256229 (87.5 GiB) tap0 Link encap:Ethernet HWaddr DE:18:C6:D7:01:63 inet6 addr: fe80::dc18:c6ff:fed7:163/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:3086 errors:0 dropped:166 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:315099 (307.7 KiB) vmnet1 Link encap:Ethernet HWaddr 00:50:56:C0:00:01 inet addr:192.168.177.1 Bcast:192.168.177.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:4224 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vmnet8 Link encap:Ethernet HWaddr 00:50:56:C0:00:08 inet addr:192.168.55.1 Bcast:192.168.55.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:4226 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) current route table Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.55.0 * 255.255.255.0 U 0 0 0 vmnet8 192.168.177.0 * 255.255.255.0 U 0 0 0 vmnet1 192.168.1.0 * 255.255.255.0 U 0 0 0 br0 current iptables output Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere Chain OUTPUT (policy ACCEPT) target prot opt source destination server_known_working.conf local banshee port 1194 proto udp dev tap0 ca ca.crt cert banshee_server.crt key banshee_server.key dh dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt push "route 192.168.1.0 255.255.255.0" client-to-client keepalive 10 120 tls-auth ta.key 0 user nobody group nobody persist-key persist-tun status openvpn-status.log verb 4 The following is the current CentOS server config file. server_ethernet_bridged.conf ( current ) local 192.168.1.169 port 1194 proto udp dev tap0 ca ca.crt cert server.crt key server.key dh dh1024.pem ifconfig-pool-persist ipp.txt server-bridge 192.168.1.169 255.255.255.0 192.168.1.200 192.168.1.210 push "route 192.168.1.0 255.255.255.0 192.168.1.1" client-to-client keepalive 10 120 tls-auth ta.key 0 user nobody group nobody persist-key persist-tun status openvpn-status.log verb 6 The following is one of the client's config file that was used with the known working configuration. client.opvn client dev tap proto udp remote XXX.XXX.XXX 1194 resolv-retry infinite nobind persist-key persist-tun ca client.crt cert client.crt key client.key tls-auth client.key 1 verb 3 I have tried the HOWTO provided by OpenVPN as well as others http://www.thebakershome.net/openvpn%5Ftutorial?page=1 with no success. Any help or suggestions would be appreciated.

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  • Bridging LXC containers to host eth0 so they can have a public IP

    - by Vianney Stroebel
    UPDATE: I found the solution there: http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge#No_traffic_gets_trough_.28except_ARP_and_STP.29 # cd /proc/sys/net/bridge # ls bridge-nf-call-arptables bridge-nf-call-iptables bridge-nf-call-ip6tables bridge-nf-filter-vlan-tagged # for f in bridge-nf-*; do echo 0 $f; done But I'd like to have expert opinions on this: is it safe to disable all bridge-nf-*? What are they here for? END OF UPDATE I need to bridge LXC containers to the physical interface (eth0) of my host, reading numerous tutorials, documents and blog posts on the subject. I need the containers to have their own public IP (which I've previously done KVM/libvirt). After two days of searching and trying, I still can't make it work with LXC containers. The host runs a freshly installed Ubuntu Server Quantal (12.10) with only libvirt (which I'm not using here) and lxc installed. I created the containers with : lxc-create -t ubuntu -n mycontainer So they also run Ubuntu 12.10. Content of /var/lib/lxc/mycontainer/config is: lxc.utsname = mycontainer lxc.mount = /var/lib/lxc/test/fstab lxc.rootfs = /var/lib/lxc/test/rootfs lxc.network.type = veth lxc.network.flags = up lxc.network.link = br0 lxc.network.name = eth0 lxc.network.veth.pair = vethmycontainer lxc.network.ipv4 = 179.43.46.233 lxc.network.hwaddr= 02:00:00:86:5b:11 lxc.devttydir = lxc lxc.tty = 4 lxc.pts = 1024 lxc.arch = amd64 lxc.cap.drop = sys_module mac_admin mac_override lxc.pivotdir = lxc_putold # uncomment the next line to run the container unconfined: #lxc.aa_profile = unconfined lxc.cgroup.devices.deny = a # Allow any mknod (but not using the node) lxc.cgroup.devices.allow = c *:* m lxc.cgroup.devices.allow = b *:* m # /dev/null and zero lxc.cgroup.devices.allow = c 1:3 rwm lxc.cgroup.devices.allow = c 1:5 rwm # consoles lxc.cgroup.devices.allow = c 5:1 rwm lxc.cgroup.devices.allow = c 5:0 rwm #lxc.cgroup.devices.allow = c 4:0 rwm #lxc.cgroup.devices.allow = c 4:1 rwm # /dev/{,u}random lxc.cgroup.devices.allow = c 1:9 rwm lxc.cgroup.devices.allow = c 1:8 rwm lxc.cgroup.devices.allow = c 136:* rwm lxc.cgroup.devices.allow = c 5:2 rwm # rtc lxc.cgroup.devices.allow = c 254:0 rwm #fuse lxc.cgroup.devices.allow = c 10:229 rwm #tun lxc.cgroup.devices.allow = c 10:200 rwm #full lxc.cgroup.devices.allow = c 1:7 rwm #hpet lxc.cgroup.devices.allow = c 10:228 rwm #kvm lxc.cgroup.devices.allow = c 10:232 rwm Then I changed my host /etc/network/interfaces to: auto lo iface lo inet loopback auto br0 iface br0 inet static bridge_ports eth0 bridge_fd 0 address 92.281.86.226 netmask 255.255.255.0 network 92.281.86.0 broadcast 92.281.86.255 gateway 92.281.86.254 dns-nameservers 213.186.33.99 dns-search ovh.net When I try command line configuration ("brctl addif", "ifconfig eth0", etc.) my remote host becomes inaccessible and I have to hard reboot it. I changed the content of /var/lib/lxc/mycontainer/rootfs/etc/network/interfaces to: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 179.43.46.233 netmask 255.255.255.255 broadcast 178.33.40.233 gateway 92.281.86.254 It takes several minutes for mycontainer to start (lxc-start -n mycontainer). I tried replacing gateway 92.281.86.254 by : post-up route add 92.281.86.254 dev eth0 post-up route add default gw 92.281.86.254 post-down route del 92.281.86.254 dev eth0 post-down route del default gw 92.281.86.254 My container then starts instantly. But whatever configuration I set in /var/lib/lxc/mycontainer/rootfs/etc/network/interfaces, I cannot ping from mycontainer to any IP (including the host's) : ubuntu@mycontainer:~$ ping 92.281.86.226 PING 92.281.86.226 (92.281.86.226) 56(84) bytes of data. ^C --- 92.281.86.226 ping statistics --- 6 packets transmitted, 0 received, 100% packet loss, time 5031ms And my host cannot ping the container: root@host:~# ping 179.43.46.233 PING 179.43.46.233 (179.43.46.233) 56(84) bytes of data. ^C --- 179.43.46.233 ping statistics --- 5 packets transmitted, 0 received, 100% packet loss, time 4000ms My container's ifconfig: ubuntu@mycontainer:~$ ifconfig eth0 Link encap:Ethernet HWaddr 02:00:00:86:5b:11 inet addr:179.43.46.233 Bcast:255.255.255.255 Mask:0.0.0.0 inet6 addr: fe80::ff:fe79:5a31/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:64 errors:0 dropped:6 overruns:0 frame:0 TX packets:54 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4070 (4.0 KB) TX bytes:4168 (4.1 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:32 errors:0 dropped:0 overruns:0 frame:0 TX packets:32 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2496 (2.4 KB) TX bytes:2496 (2.4 KB) My host's ifconfig: root@host:~# ifconfig br0 Link encap:Ethernet HWaddr 4c:72:b9:43:65:2b inet addr:92.281.86.226 Bcast:91.121.67.255 Mask:255.255.255.0 inet6 addr: fe80::4e72:b9ff:fe43:652b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1453 errors:0 dropped:18 overruns:0 frame:0 TX packets:1630 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:145125 (145.1 KB) TX bytes:299943 (299.9 KB) eth0 Link encap:Ethernet HWaddr 4c:72:b9:43:65:2b UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3178 errors:0 dropped:0 overruns:0 frame:0 TX packets:1637 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:298263 (298.2 KB) TX bytes:309167 (309.1 KB) Interrupt:20 Memory:fe500000-fe520000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:6 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:300 (300.0 B) TX bytes:300 (300.0 B) vethtest Link encap:Ethernet HWaddr fe:0d:7f:3e:70:88 inet6 addr: fe80::fc0d:7fff:fe3e:7088/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:54 errors:0 dropped:0 overruns:0 frame:0 TX packets:67 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4168 (4.1 KB) TX bytes:4250 (4.2 KB) virbr0 Link encap:Ethernet HWaddr de:49:c5:66:cf:84 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) I have disabled lxcbr0 (USE_LXC_BRIDGE="false" in /etc/default/lxc). root@host:~# brctl show bridge name bridge id STP enabled interfaces br0 8000.4c72b943652b no eth0 vethtest I have configured the IP 179.43.46.233 to point to 02:00:00:86:5b:11 in my hosting provider (OVH) config panel. (The IPs in this post are not the real ones.) Thanks for reading this long question! :-) Vianney

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  • OpenVPN and PPTP on XEN VPS

    - by amiv
    I have Debian based system (Ubuntu 11.10) on XEN VPS. I've installed OpenVPN and works great. I need to install PPTP too, so did it and clients can connect, but they have no internet on client side. If I connect to VPN over PPTP I can ping and access to only my VPS by its IP, but ony that. There's no "internet" on client side. It looks it's not DNS problems (I'm using 8.8.8.8) because I can't ping known IPs. I bet the solution is simple, but don't have any idea. Any guess? /etc/pptpd.conf option /etc/ppp/pptpd-options logwtmp localip 46.38.xx.xx remoteip 10.1.0.1-10 /etc/ppp/pptpd-options name pptpd refuse-pap refuse-chap refuse-mschap require-mschap-v2 require-mppe-128 ms-dns 8.8.8.8 ms-dns 8.8.4.4 proxyarp nodefaultroute lock nobsdcomp /etc/ppp/ip-up [...] ifconfig ppp0 mtu 1400 /etc/sysctl.conf [...] net.ipv4.ip_forward=1 Command which I run: iptables -t nat -A POSTROUTING -j SNAT --to-source 46.38.xx.xx (IP of my VPS) The client can connect, first one gets IP 10.1.0.1 and DNS from Google. I bet it's iptables problem, am I right? I'm iptables noob and I don't have idea what's wrong. And here's the ifconfig and route command before client connect via PPTP: root@vps3780:~# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default xx.xx.tel.ru 0.0.0.0 UG 100 0 0 eth0 10.8.0.0 10.8.0.2 255.255.255.0 UG 0 0 0 tun0 10.8.0.2 * 255.255.255.255 UH 0 0 0 tun0 46.38.xx.0 * 255.255.255.0 U 0 0 0 eth0 root@vps3780:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:16:3e:56:xx:xx inet addr:46.38.xx.xx Bcast:0.0.0.0 Mask:255.255.255.0 inet6 addr: fe80::216:xx:xx:dfb6/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:22671 errors:0 dropped:81 overruns:0 frame:0 TX packets:2266 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1813358 (1.8 MB) TX bytes:667626 (667.6 KB) Interrupt:24 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:100 errors:0 dropped:0 overruns:0 frame:0 TX packets:100 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:10778 (10.7 KB) TX bytes:10778 (10.7 KB) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.8.0.1 P-t-P:10.8.0.2 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:602 errors:0 dropped:0 overruns:0 frame:0 TX packets:612 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:90850 (90.8 KB) TX bytes:418904 (418.9 KB) And here's the ifconfig and route command after client connect via PPTP: root@vps3780:~# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default xx.xx.tel.ru 0.0.0.0 UG 100 0 0 eth0 10.1.0.1 * 255.255.255.255 UH 0 0 0 ppp0 10.8.0.0 10.8.0.2 255.255.255.0 UG 0 0 0 tun0 10.8.0.2 * 255.255.255.255 UH 0 0 0 tun0 46.38.xx.0 * 255.255.255.0 U 0 0 0 eth0 root@vps3780:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:16:3e:56:xx:xx inet addr:46.38.xx.xx Bcast:0.0.0.0 Mask:255.255.255.0 inet6 addr: fe80::216:xx:xx:dfb6/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:22989 errors:0 dropped:82 overruns:0 frame:0 TX packets:2352 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1841310 (1.8 MB) TX bytes:678456 (678.4 KB) Interrupt:24 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:112 errors:0 dropped:0 overruns:0 frame:0 TX packets:112 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:12102 (12.1 KB) TX bytes:12102 (12.1 KB) ppp0 Link encap:Point-to-Point Protocol inet addr:46.38.xx.xx P-t-P:10.1.0.1 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1400 Metric:1 RX packets:66 errors:0 dropped:0 overruns:0 frame:0 TX packets:15 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:10028 (10.0 KB) TX bytes:660 (660.0 B) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.8.0.1 P-t-P:10.8.0.2 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:602 errors:0 dropped:0 overruns:0 frame:0 TX packets:612 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:90850 (90.8 KB) TX bytes:418904 (418.9 KB) And ugly iptables --list output: root@vps3780:~# iptables --list Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT all -- 10.8.0.0/24 anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable ACCEPT all -- 10.1.0.0/24 anywhere ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT all -- 10.1.0.0/24 anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT all -- 10.8.0.0/24 anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable And ugly iptables -t nat -L output: root@vps3780:~# iptables -t nat -L Chain PREROUTING (policy ACCEPT) target prot opt source destination Chain INPUT (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain POSTROUTING (policy ACCEPT) target prot opt source destination SNAT all -- 10.8.0.0/24 anywhere to:46.38.xx.xx MASQUERADE all -- 10.1.0.0/24 anywhere SNAT all -- 10.1.0.0/24 anywhere to:46.38.xx.xx SNAT all -- 10.8.0.0/24 anywhere to:46.38.xx.xx SNAT all -- 10.1.0.0/24 anywhere to:46.38.xx.xx MASQUERADE all -- anywhere anywhere SNAT all -- anywhere anywhere to:46.38.xx.xx SNAT all -- 10.8.0.0/24 anywhere to:46.38.xx.xx MASQUERADE all -- anywhere anywhere MASQUERADE all -- 10.1.0.0/24 anywhere MASQUERADE all -- anywhere anywhere MASQUERADE all -- 10.1.0.0/24 anywhere As I said - OpenVPN works very good. 10.8.0.0/24 for OpenVPN (on tun0). PPTP won't work. 10.1.0.0/24 for PPTP (on ppp0). Clients can connect, but they haven't "internet". Any suggestions will be appreciated. Second whole day fighting with no results. EDIT: iptables -t filter -F - it resolved my problem :-)

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  • "ref" vs "out" keyword errors using the sql-net and C# Sqlite combination for windows phone 7.1

    - by param
    I am getting some "ref" vs "out" keyword errors using the sql-net and C# Sqlite combination for windows phone 7.1. Is this due to a wrong combination of libraries that I am using? App Type: Windows Phone 7.1 Using: 1) sql-net Version 1.0.5, Source Nuget thru Visual Studio 2) C# Sqlite for WP7 (wp7sqlite) ( Community.CSharpSqlite.WP7) Version 0.1.1, Source Nuget thru Visual Studio. The exact error I receive is below **Error 5 The best overloaded method match for Community.CsharpSqlite.Sqlite3.sqlite3_open(string, ref Community.CsharpSqlite.Sqlite3.sqlite3)' has some invalid arguments C:\Dev\Learning\SQLite.cs Line:2492 Column: 29 ** The next error then hints that it is related to the parameter being passed as "out" type instead of "ref" type. Error 6 Argument 2 must be passed with the 'ref' keyword C:\Dev\Learning\SQLite.cs Line: 2492 Column: 64 I can make the compile errors go away by replacing the "out" keyword with the "ref" keyword, but that is likely to lead to other issues. Given that I do not see much complain about this issue - I may be doing something wrong but not able to detect easily. Thanks, Parmeshwar

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  • how to add special class for labels and errors on zend form elements?

    - by user1400
    hello how we could add a special class for labels and errors for a zend-form-element for example html output code before add classes <dt id="username-label"><label for="username" class="required">user name:</label></dt> <dd id="username-element"> <input type="text" name="username" id="username" value="" class="input" /> <ul class="errors"><li>Value is required and can't be empty</li></ul></dd> and code after we add classes <dt id="username-label"><label for="username" **class="req-username"**>user name:</label></dt> <dd id="username-element"> <input type="text" name="username" id="username" value="" class="input" /> <ul **class="err-username"**><li>Value is required and can't be empty</li></ul></dd> thanks

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  • Rails and jQuery - how do you get server-side validation errors to your view after an ajax request

    - by adam
    Ive searched this site but questions are usually regarding doing client-side validations or for different frameworks. I have a tasks list whose items can be edited inline. Upon submitting the inline edit form the item is updated all thanks to jQuery, ajax and rails. But I want to handle bad input from the user. HTML requests redisplay the view and errors are displayed thanks to rails helpers. But how do I insert that information after an ajax call? Heres my update method in my controller def update @task = Task.find(params[:id]) respond_to do |format| if @task.update_attributes(params[:task]) flash[:notice] = 'Task was successfully updated.' format.html { redirect_to(@task) } format.xml { head :ok } format.js else format.html { render :action => "edit" } format.xml { render :xml => @task.errors, :status => :unprocessable_entity } #format.js ...hmmm... either go to js.erb file or do stuff inline end end end

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  • what type of errors can we handle using system define unnamed exception in sqlplus?

    - by Aspirant
    I have been trying to access the below code DECLARE N_DEPTNO DEPT.DEPTNO %TYPE :=&DEPT_NUM; V_DNAME DEPT.DNAME %TYPE; NOT_ENOUGH_VALUES EXCEPTION; PRAGMA EXCEPTION_INIT(NOT_ENOUGH_VALUES,-06502); BEGIN SELECT DNAME,LOC INTO DNAME FROM DEPT WHERE DEPTNO = N_DEPTNO; DBMS_OUTPUT.PUT_LINE('Successfully Fetched !!'); EXCEPTION WHEN NOT_ENOUGH_VALUES THEN DBMS_OUTPUT.PUT_LINE('No Enough Values ... '); END; It is still showing error message after specified it in EXCEPTION block. Can i handle these type of errors using PRAGMA EXCEPTION_INIT i.e not providing enough values in the select statement... If not what type of errors can be handled in System Defined Unnamed Exception using PRAGMA EXCEPTION_INIT.

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  • How to show / debug PEAR::DB errors in webpage?

    - by Markus Ossi
    I am connecting to MySQL database on my webpage and have this copy-pasted code for errors: if(DB::isError($db)) die($db->getMessage()); I have the connection code in an outside file called connection.inc that I include at the beginning of my page before the DOCTYPE and html tags. For debugging purposes, how can I print the database errors on my webpage? I thought I could do something like this: echo 'Could not connect to database. The error was:' . $db->getMessage(); but this returns: Fatal error: Call to undefined method DB_mysql::getMessage()

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  • Is there a browser-agnostic way to detect client-side script errors with Watin?

    - by Michael
    We're using WatiN to test our web portals. During the course of an E2E test, we'll occasionally see client-side script errors on the IE status bar. I'd like to chain a handler onto the script error event and record the error for later analysis and bug filing. Problem is, I don't know that there's a global script error event or how to chain into it. And if there's not a browser-agnostic way to accomplish this, I can create MyIE and MyFF subclasses but then this becomes two browser-specific questions. In essence, I'm thinking of something like this entirely made-up call: browser.ScriptEngine.SetCustomErrorHandler(LogScriptingError); ... where LogScriptErrors is my code that does the obvious. Many of our client-side scripting errors don't necessarily prevent the test from continuing (a pretty UI element didn't animate, for example, but the underlying form is still submittable), so I'd like to log the error and forge ahead in most cases.

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  • Objects instead of global variables in Perl

    - by Gaurav Dadhania
    I don't know if this is the right thing to do. But I'm lookig for tutorials/articles on using objects instead of global variables to store state. For eg. package something # some code here... # that generates errors and uses # something::errors to track errors. package something::errors sub new { my ($this) = @_; bless $this; return $this; } sub setErrors{ my ($this, @errors) = @_; $this->{errors} = \@errors; } sub getErrors{ my ($this) = @_; return $this->{errors}; } Is this better than using global varibles? Any down-sides to this? Any approach which might be better? Thanks.

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  • How to read modelstate errors when returned by Json?

    - by user281180
    How can I display modelstate errors returned by Json ? I want to do somthing like that... if (!ValidateLogOn(Name, currentPassword)) { ModelState.AddModelError("_FORM", "Username or password is incorrect."); //Return a json object to the javascript return Json(new { ModelState }); } What must be my code in the view to read the modelstate errors and display them? My actual code in the view is as follows to read the Json values: function createCategoryComplete(e) { var obj = e.get_object(); alert(obj.Values); }

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  • Why am I getting 'File in use by Another User' and 'Application Sharing Violation' errors when trying to open & and save files?

    - by GollyJer
    We're getting this a lot lately. Windows 2008 Server Windows 7 & Vista Client PC's Microsoft Office 2007 When a user tries opening a file on our network drive (word doc, excel spreadsheet, etc) the software reports the file is locked by 'another user' even when it's not. They're also seeing random 'Sharing Violation' errors when trying to save files to the network. Possibly the same manifestation of the problem shows up when a user tries saving a local, on their own drive, non-network files and they get 'Can not save due to a Sharing Violation'.

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  • Array Conversion in Xstream Parser

    - by Avidev9
    Hi am trying to convert the following xml into object using Xstream parser. I tried using the below code to convert the xml but am getting Duplicate field ERRORS ---- Debugging information ---- field : ERRORS class : com.avidev9.Fees.GCSFeesResponse$DebitsWSDS required-type : com.avidev9.Fees.GCSFeesResponse$DebitsWSDS converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter path : /DebitsWSDS/ERRORS[2] line number : 1 version : null The Code I used xstream.alias("DebitsWSDS", GCSFeesResponse.DebitsWSDS.class); xstream.alias("ERRORS", GCSFeesResponse.ERRORS.class); xstream.alias("ERROR_ID", String.class); xstream.alias("TABLE_NAME", String.class); xstream.alias("TABLE_ID", String.class); xstream.alias("ROW_ID", String.class); xstream.alias("ERROR_TEXT", String.class); xstream.alias("ERROR_CODE", String.class); xstream.alias("COLUMN_ID", String.class); xstream.alias("ERROR_TYPE", String.class); GCSFeesResponse.DebitsWSDS gcsFeesResponse =(GCSFeesResponse.DebitsWSDS)xstream.fromXML(result.get_any()[0].getAsString()); XML <DebitsWSDS xmlns=""> <DEBITS> <DEBIT_ID>-1</DEBIT_ID> <ACCOUNT_ID>12321312313</ACCOUNT_ID> <EFFECTIVE_DATE>2012-12-12T00:00:00-06:00</EFFECTIVE_DATE> <DAY_OF_MONTH>12</DAY_OF_MONTH> <DEBIT_TYPE>S</DEBIT_TYPE> <OCCURS_NUM>1</OCCURS_NUM> <DEBIT_AMOUNT>750</DEBIT_AMOUNT> <MEMO>S</MEMO> <ACTIVE_FLAG>Y</ACTIVE_FLAG> <MODIFIED_BY/> <DEBIT_AUTHORIZED/> <DEBIT_AUTHORIZED_BY/> <REMAINING_OCCURRENCES>0</REMAINING_OCCURRENCES> </DEBITS> <ERRORS> <ERROR_ID>1</ERROR_ID> <TABLE_NAME>Debits</TABLE_NAME> <TABLE_ID>-1</TABLE_ID> <ROW_ID>0</ROW_ID> <COLUMN_ID>EXCEPTION</COLUMN_ID> <ERROR_TYPE>E</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>This debit type is not allowed for this company and policy group</ERROR_TEXT> </ERRORS> <ERRORS> <ERROR_ID>2</ERROR_ID> <TABLE_NAME>Clients</TABLE_NAME> <TABLE_ID/> <ROW_ID>0</ROW_ID> <COLUMN_ID>CLOSE_SCHED_DATE</COLUMN_ID> <ERROR_TYPE>E</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>Client has been closed. Cannot Authorize Draft.</ERROR_TEXT> </ERRORS> <ERRORS> <ERROR_ID>3</ERROR_ID> <TABLE_NAME>Debits</TABLE_NAME> <TABLE_ID>-1</TABLE_ID> <ROW_ID>0</ROW_ID> <COLUMN_ID>EXCEPTION</COLUMN_ID> <ERROR_TYPE>E</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>Cannot Schedule a Debit or Draft. Client has been closed.</ERROR_TEXT> </ERRORS> <ERRORS> <ERROR_ID>1</ERROR_ID> <TABLE_NAME>Debits</TABLE_NAME> <TABLE_ID>-1</TABLE_ID> <ROW_ID>0</ROW_ID> <COLUMN_ID>ACTIVE_FLAG</COLUMN_ID> <ERROR_TYPE>W</ERROR_TYPE> <ERROR_CODE>4</ERROR_CODE> <ERROR_TEXT>Creating debit on inactive Client account.</ERROR_TEXT> </ERRORS> </DebitsWSDS> My class structure. package com.avidev9.Fees; import java.util.List; public class GCSFeesResponse { public DebitsWSDS DebitsWSDS; public class DebitsWSDS { public List<ERRORS> ERRORS; public String xmlns; public DEBITS DEBITS; } public class ERRORS { public String TABLE_NAME; public Integer TABLE_ID; public Integer ERROR_ID; public Integer ROW_ID; public String ERROR_TEXT; public Integer ERROR_CODE; public String COLUMN_ID; public String ERROR_TYPE; } public class DEBITS { public String EFFECTIVE_DATE; public String ACTIVE_FLAG; public Long ACCOUNT_ID; public String DEBIT_AUTHORIZED_BY; public Integer DAY_OF_MONTH; public Integer DEBIT_ID; public String MEMO; public Integer REMAINING_OCCURRENCES; public String DEBIT_TYPE; public Integer OCCURS_NUM; public Integer DEBIT_AMOUNT; public String DEBIT_AUTHORIZED; public String MODIFIED_BY; } }

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  • How do you log php errors with CakePHP when debug is 0?

    - by Justin
    I would like to log PHP errors on a CakePHP site that has debug = 0. However, even if I turn on the error log, like this: error_reporting = E_ALL & ~E_NOTICE & ~E_DEPRECATED log_errors = On it doesn't log errors. The problem is that even for a parse error that should cause the CakePHP environment to not load completely (I think), it still blocks the error from being logged. If I set debug to 3, it logs to the file without issue. I am using CakePHP 1.2. I know this is apparently made easier in 1.3, but I'm not ready to upgrade.

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  • How do I completely disable JavaScript errors using VS2008 and IE?

    - by TheHurt
    I am trying to prevent VS from breaking on JS errors. I have the following settings: In IE, under Tools-Internet Settings-Advanced (tab)-Browsing Disable script debugging (Internet Explorer) is checked. Disable script debugging (Other) is checked. In VS, under Debug-Exceptions-Common Language Runtime Exceptions JScript Exceptions (thrown and user-unhandled) are unchecked. In VS, under Tools-Options-Debugging-Just-In-Time Script is unchecked. There are some JavaScript errors that I just don't care about and it is driving me insane having to deal with them.

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