Failesafe, Fallback, and redundant ideal config?

Greetings Folks..
I have a client that would like to use their 2 xServe units as a fault-tolerant mail/www solution, with a little FTP. They currently have one Dual G5 xServe, and one Single G5 unit. They require a failsafe/fallback system, and I am posting this to see if I can obtain the help of the combined wisdom on here
What I am envisioning is:
The main (dual G5) xserve is the main machine.. and the single processor machine is the backup. (Perhaps even just mirroring the two systems with different IP addresses, or IP Failover. We would prefer to not have an external RAID or other storage, but perhaps to RAID 1 two internal 80 Gig SATA drives in each box. (Using this internal RAID 1 has saved their bacon once already... and they are happy with a pair of drives in each box, serving as a RAID 1.)
I am thinking one of several options would work well, and I am curious as to whether Open Directory or Rsync (Or some other equally good solution) is the way to go with this.
Should I build up one box to be the Open Directory Master, and the other to feed user accts and the like from the the master? Should I attempt to mirror them completely, and/or use a form of IP failover solution? Perhaps just keep both machines on separate IP addresses, and change DNS routing in the Primary and Secondary DNS servers if things go awry?
I am curious as to how others have done this.. and if the preferred solution is to use Apple's tools, or a more mundane Unix solution like rSync. Any advice out there? All advice and guidance would be much appreciated folks.
Thanks in advance...
Chris
Lots of Macs.. too numerous to mention Mac OS X (10.4.8) xServe redundancy and Fault Tolerance.

We have seen too many issues in the past with servers using redundant interfaces.
We always end up recommending not to use such a solution and to insert at least 1 switch between the CSS and the servers.
Gilles.

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We have a 2951 router connected to an RPS2300 remote power supply. On the router there are two commands applied in global config mode, "redundancy inter-device" and "redundancy". The engineer who set up the router originally states that these commands are necessary for the RPS2300 to work properly with the 2951, but the documentation for the "redundancy inter-device" and "redundancy" commands do not seem to be related to the RPS at all. Can anyone tell me if either of these commands are required for RPS, or if there is any other config that must be added to the 2951 for the RPS2300 to function properly?
An excerpt from the 2951 config:
vtp mode transparent
username <detail removed>
username <detail removed>
redundancy inter-device
redundancy
controller T1 0/0/0
As you can see, there is no additional configuration under either of the "redundancy" commands.
Thanks
-Mat

To clarify, the 2951 router has an RPS-ADPTR-2921-51 module installed which connects to the RPS2300 unit.
-Mat

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The below is an example using the ASA - but the principle remains the same:-
http://www.cisco.com/en/US/customer/products/ps6120/products_configuration_example09186a0080975e83.shtml
HTH>

Purpose of Retention Policy Recovery Window and Redundancy

Hi,
Good Evening,
I have some queries regarding the RMAN Retention Policy Recovery Window and Redundancy.
1. Any condition is there to set the Retention Policy Recovery Window and Redundancy and control_file_record_keep_time?What is the relationship between these 3 parameters?
2. Explain the scenario if i set the control_file_record_keep_time=4 Redundancy=3 and Recovery Window=7?
3. If i set the Redundancy=3 and Recovery Window=7 means my backup place only have 3 copies of backup based on the redundancy then what is the purpose of Recovery Window=7 please give some example.
4. If i change the values for Recovery Window=3 and Redundancy=7 what will happened, how many days backup will be available in my FRA location?Explain with one scenario?
Thanks in advance.
Vijay.

Hi,
Take a look of the above doc contents:
Configuring the Backup Retention Policy
As explained in "Backup Retention Policies", the backup retention policy specifies which backups must be retained to meet your data recovery requirements. This policy can be based on a recovery window or redundancy. Use the CONFIGURE RETENTION POLICY command to specify the retention policy.
so you have option to choose either recovery windows or redundancy based you can set the configuration like
read in the Doc What it said for both:
Recovery Window-Based Retention Policy ==>RMAN does not consider any full or level 0 incremental backup as obsolete if it falls within the recovery window. Additionally, RMAN retains all archived logs and level 1 incremental backups that are needed to recover to a random point within the window.
Redundancy-Based Retention Policy==>The REDUNDANCY parameter of the CONFIGURE RETENTION POLICY command specifies how many full or level 0 backups of each datafile and control file that RMAN should keep. If the number of full or level 0 backups for a specific datafile or control file exceeds the REDUNDANCY setting, then RMAN considers the extra backups as obsolete. The default retention policy is REDUNDANCY 1.
RMAN> show RETENTION POLICY;
using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name DDTEST are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
RMAN> CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
old RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
new RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
new RMAN configuration parameters are successfully stored
RMAN> show RETENTION POLICY;
RMAN configuration parameters for database with db_unique_name DDTEST are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
old RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO REDUNDANCY 3;
new RMAN configuration parameters:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
new RMAN configuration parameters are successfully stored
RMAN> show RETENTION POLICY;
RMAN configuration parameters for database with db_unique_name DDTEST are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
CONTROL_FILE_RECORD_KEEP_TIME:This parameter applies only to records in the control file that are circularly reusable (such as archive log records and various backup records) ref Doc:CONTROL_FILE_RECORD_KEEP_TIME
1. Any condition is there to set the Retention Policy Recovery Window and Redundancy and control_file_record_keep_time?What is the relationship between these 3 parameters?
2. Explain the scenario if i set the control_file_record_keep_time=4 Redundancy=3 and Recovery Window=7?
3. If i set the Redundancy=3 and Recovery Window=7 means my backup place only have 3 copies of backup based on the redundancy then what is the purpose of Recovery Window=7 please give some example.
4. If i change the values for Recovery Window=3 and Redundancy=7 what will happened, how many days backup will be available in my FRA location?Explain with one scenario?
so i believe you can get the Answer from Your Question from Above details.
HTH

Redundancy management IP and Redundancy port IP unreachable issue

Hi, all
I got one interesting issue with wireless 5508 controller. we have ordered two WLCs, one is air5508-12-k9, Anther one is air5508-HA-k9.
Now, we are going to form HA mode and HA box will become standby mode. One issue we are seeing now. after configuring redundancy management IP and Redundancy port IP to both WLCs. primary WLC are working well that we can ping it's all of IPs successfully, however standby WLC are not working well. even it can't ping itself. management IP has no problem.
Problem is only for redundancy management IP and redundancy Port IP. One interesting thing is our switch can't learn redundancy port's MAC address even it's connecting and interface shows UP. Primary has no this issue.
Has anyone have the same issue before or appreciate any suggestions and inputs.
WLC 1
(Cisco Controller) >show redundancy sum
            Redundancy Mode = SSO ENABLED
                Local State = ACTIVE
                 Peer State = UNKNOWN - Communication Down
                       Unit = Primary
                    Unit ID = 7C:0E:CE:64:43:80
           Redundancy State = Non Redundant
               Mobility MAC = 7C:0E:CE:64:43:80
Redundancy Management IP Address................. 25.16.228.252
Peer Redundancy Management IP Address............ 25.16.228.253
Redundancy Port IP Address....................... 169.254.228.252
Peer Redundancy Port IP Address.................. 169.254.228.253
WLC 2 HA
(Cisco Controller) >show redundancy sum
Redundancy Mode = SSO DISABLED
     Local State = ACTIVE
      Peer State = N/A
            Unit = Primary
         Unit ID = 7C:0E:CE:4A:23:40
Redundancy State = N/A
    Mobility MAC = 7C:0E:CE:4A:23:40
Redundancy Management IP Address................. 25.16.228.253
Peer Redundancy Management IP Address............ 25.16.228.252
Redundancy Port IP Address....................... 169.254.228.253
Peer Redundancy Port IP Address.................. 169.254.228.252
Thank you so much indeed.

thank you very much that makes sense, so I will need to change service port address ( maybe a class A or C ) or disconnect that port from the network ...
thank you again very much your help is really appreciated

WCS and WLC WLAN Config not fully in sync

Hi,
We're facing the issue WCS and WLC WLAN Config is not fully in sync. WLC showing server 1 is IP:10.160.22.151, Port:1812 but WCS server showing none even after click on “Audit” button. Any idea how to resolve this issue? Is this causing any wireless problem? Attached is screen captured. Thanks for your help.

You mentioned "audit". Have you done a WCS audit so the WLC and WCS are in SYNC?
If you make a change on the WLC you will not see it in WCS UNLESS they are SYNC. You will see the term "mismatch".
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
‎"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."

Firefox users cannot presently exercise choice, to opt-in or out of "data collected for improving services." As a result, Firefox is constantly dialing home, sometimes four times a day or more up to 48 times a day. There is some over-stepping and redunda

I understand the charter on this is to "check-in" once every time the program is turned on, and then once every 6 hours after that, or, once every 24 hours presumably. But the phone-home-effect is over-stepping these basic parameters. If a user turns their browser off and then on, Firefox is still obligated to "check-in" even if it just checked in 3 minutes prior. If the coding is not pre-designed to overstep, or act excessively in a redundant focus, the instance of once every six hours or once every 24 hours, is still overmuch if a user has been doing this (non-voluntarily-participating) for 9 months or longer.
== This happened ==
Every time Firefox opened
== This started when Firefox took up the initiative of "improving service. to end users" or similar idea, making the web safer for novice users, etcetera.

Opening question was truncated. Should read: "Firefox users cannot presently exercise choice, to opt-in or out of "data collected for improving services." As a result, Firefox is constantly dialing home, sometimes four times a day or more up to 48 times a day. There is some over-stepping and redundancy here. It would seem the practice of "improving service" has been accomplished with as much information as Mozilla has gathered in the last 6-18 months about its users habits. '''Isnt it about time to give users the option to opt out of that now that most the heavy liftiing has been accomplished?'''"

2 ISP load balancing and redundancy

Hello!!
Our small company has about 40 branches spreaded within city. Branches are connected by optic wire supplied by our ISP. So in ISP our branches are located in one VLAN. From every branch we created VPN tunnel to our server room in central office. Central office is like a cetner point. If optic wire fails to central office, there would no VPN tunnels and no network to all branches. Moreover, all the traffice goes through central office.
Now we decided to pave one more optic line to our central office. And that will increase bandwidth and redundancy.
Private network topology: There are no default gateways and ip-addresses. For examle, at first branch I will plug computer directly into media converter and at the second branch plug another computer to the media converter. After that this two computers became in one network. And can assign any ip addresses to them.
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3700 series routers.

Sorry for upping 1 year old threat.
We talked to our Network Provider. They said "these two cables are coming from two different places, so there is no way to use etherchannel. You must use active-standby solution."
Relying on STP we just put two cables into 3750 stack. But with default STP settings, connection was very unstable, many packet losses and disconnections. So we found easy solution with "flex links", making one interface backup of the other. And only now I recognized that this is not a failover solution. Because, if network beyond media converter will down, link from media converter to switch would still up.
What could I do to make our L2 WAN redundant? Are there any additional STP settings.

Active/Standby Failover with pair of 5510s and redundant L2 links

Hi
I just got two ASA5510-SEC-BUN-K9 and I'm wondering is it possible to implement an Active/Standby Failover configuration (Routed mode) with two ASA5510 and redundant pair of switches from both inside and outside interfaces? In other words, I would like to have two L2 links from each ASA (in pair od ASAa) to each L2 switch (in pair of redundant L2 Switches). The configuration I would like to achive is just like one in Cisco Security Appliance Command Line Configuration Guide, page B-23, figure B-8, with only difference that I wouldn't go with multiple security contexts (I want Active/Standby failover).
Thanks in advance
Zoran Milenkovic

Hello Zoran,
Absolutely. You can have 2 ASAs configured in Active/Standby mode. For reference, here is a link which has a network connectivity diagram based on PIX, however, connectivity would still be same with ASAs-
http://www.cisco.com/en/US/docs/security/pix/pix63/configuration/guide/failover.html#wp1053462
The difference is that on ASA, you can only have LAN-Based failover, hence you'll need to use one additional interface on both ASAs for failover-link. You can connect these two failover-link interfaces directly using a cross cable.
Apart from this, please refer to following link on how to go with configuration of Lan-based Active/Standby failover-
http://www.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/failover.html#wp1064158
Also make sure that both ASAs have required hardware/software/license based on following link-
http://www.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/failover.html#wp1047269
Hope this helps.
Regards,
Vibhor.

I cant uninstall my itunes off my computer, i have followed instructions and i still have errors, including error 2330 and redundance cyclic. the only software i have left is itunes.exe and file es.lproj which is located in the ituneshelpresources folder

I cant uninstall my itunes off my computer, i have followed instructions and i still have errors, including error 2330 and redundance cyclic. the only software i have left is itunes.exe and file es.lproj which is located in the ituneshelpresources folder. i recently installed a second hard drive and that let me uninstall everything. I just want to get itunes off my computer and reinstall itunes, i have deleted everything i can and i ran "chkdsk" this did nothing. I would have just updated the oild itunes to the newest version but it didnt ley me do that. installing/ uninstalling or deleting just lets me get half way and shows me these errors. Please help, thank you.
JPHowarth

the only software i have left is itunes.exe and file es.lproj which is located in the ituneshelpresources folder.
If the chkdsk isn't fixing the damage, and those are the only iTunes that can't be deleted, try renaming the "iTunes" folder that they are contained in (in your Program files) to iTunesOLD.
Now try another install. Does it go through without the 2330 this time?

Multiple WLC and AP secondary config

Hi all, we have 2 WLC, each licensed for 12 AP's. Here is the issue, we will have up to 20 Ap in our enviroment. No problem getting each AP assigned to a primary controller. My question is assinging an AP to a secondary. If I assign 10 AP's to each as a primary, and then have each assigned to the other controller as a secondary, in the event we lose 1 controller the other will now have 20 AP's associating with it. How does the WLC handle this situation? Just accept the first 2 requests then ignore all the other 8 request?

Hi Jeffrey,
Just to add a note to the great tips from Dan and Leo (+5 points each guys!)
One of the recommended designs for WLC/AP failover and redundancy is referred to as the "n+1" rule. So in your design you would add a third WLC that had no AP's associated to it. It would be licensed for either 12 or 25 AP's. 12 in case one of your WLC's fails or 25 in case both active WLC's fail :)
WLAN Controller Failover for Lightweight Access Points Configuration Example
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008064a294.shtml#c4
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How to install drivers for ati radeon 3200?and how to config xorg.co ?

how to install drivers for ati radeon 3200?and how to config xorg.conf?

mawch wrote:how to install drivers for ati radeon 3200?and how to config xorg.conf?
Hello
I am using ati hd 3200 which is integrated with my motherboard. If you are using arch you can download & install through pacman. The package is named like catalyst*. You can install them by issuing as root user
#pacman -Sy
#pacman -S -l | grep -i catalyst
#pacman -S catalyst catalyst-utils
After installation reboot your machine in runlevel 1. (single mode). Ensure "fglrx" module is loaded correctly using
#lsmod | grep -i fglrx
If the resultant output have "fglrx" part the module is loaded correctly. The next step is to create a working /etc/X11/xorg.conf. Backup your current xorg.conf if needed.
#cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bkup
Then issue
#aticonfig --initial --input=/etc/X11/xorg.conf
This will create a new xorg.conf file. Now we can test our confign.
#telinit 3
I am using runlevel 3 to avoid graphic messup!!
issue
#gdm
If you graphical login screen works correctly there is nothing to do more except adjust your monitor resoloution as you like.
To know your ati driver is working correctly issue as root
#fgl_glxgears
If gears are rolling happily it seems correct. You can also know more about installed ati driver
#fglrxinfo
Now the installed driver version is in the output
If there is any problem try following
##### Soloutions to solve various display problems using ATI Catalyst Drivers in Linux #####
yes video playback is choppy until i ran :-
sudo aticonfig --overlay-type=Xv
Try adding the following to the 'Device' section in /etc/X11/xorg.conf
Option "TexturedVideo" "true"
### This is a half solution for mythtv problems. Run mythtv in window (no full screen) If You have a screen resolution of 1024x768 try the command;
mythfrontend --geometry 800x600
Append the "Device" Section of /etc/X11/xorg.conf file as follows;
Section "Device"
Identifier "Videocard0"
Driver "fglrx"
Option "OpenGLOverlay" "off"
Option "VideoOverlay" "on"
Option "TexturedVideo" "on"
Option "TexturedVideoSync" "on"
Option "Capabilities" "0x00000800"
BusID "PCI:1:0:0"
EndSection
Add following in the .bashrc of each user or /etc/bashrc file* Most Effective In My Case!!
export LIBGL_ALWAYS_INDIRECT=true
####### Arch Linux - Add the "nopat" option to the /boot/grub/menu.lst or /boot/grub/grub.conf
####### as in the following example
title Archlinux Ice Kernel
root (hd0,1)
kernel /boot/vmlinuz26-ice root=/dev/sda2 ro resume=/dev/sda3 quiet splash nopat
initrd /boot/kernel26-ice.img
NB: REGULAR DISCLAIMER IS ALSO APPLICABLE TO THE ABOVE MATTER; USE IT AT YOUR OWN RISK !!! ALL THE ABOVE INFORMATION IS COLLECTED FROM VARIOUS POSTINGS IN THE FORUM AND FROM MY OWN EXPERIENCE
Wish U good luck
mvdvarrier

Workgroup Bridge and local Wifi Config

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What I'm trying to config is to have a standalone local WLAN (Built into a VAN) running on the 2.4ghz and then also have a workgroup bridge on the 5ghz to the corporate lan.
Setup is this:
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So far I have the bridge working, the 1142 connects to a ssid on the 1131 using psk. I can see the 1142 as an assosiated client on the wlc and I can ping the the lan from the 1142 so I'm happy the bridge is working.
Clients connected to the 2.4ghz ssid on the 1142 can only ping through as far as the AP(1142) I can't seem to get the traffic to pass across the bridge, is there something I need to do to link the 2.4 to the 5ghz bridge link?
Any help always appreciated, cheers.

dmantill - Thanks for your link. I have read through and checked my config but my plan is to have a number of clients, all dhcp assigned, connecting to the do0 int for local wlan breakout.
I'm not sure that the passive config will help me there.
Steven - I have enabled the wgb on the do1 int and I am connecting clients on the do0 int for local wlan breakout. Enabling the WGB has not disabled the other radio on my setup.
I was running 7.0.98.0 but have today upgraded to 7.0.98.218 on my WLC but that has not helped.
From what I can tell it looks like my problem just lies with routing traffic across the 2 radios. My local clients can ping as far as the WGB and if I CLI into the WGB AP I can ping the corporate lan on the otherside of the bridge and can also ping from the lan to the WGB. I just cannot seem to get the 2 ssid's to route between each other.
Here's my WGB config, hope this brings some more ideas!!
Cheers,
Jason.
Current configuration : 1555 bytes
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname XXX
logging rate-limit console 9
enable secret 5 $1$ujWI$HMYMAjMfJV2J2WaGa1/JJ0
no aaa new-model
dot11 syslog
dot11 ssid XXX
   authentication open
   authentication key-management wpa
   guest-mode
   wpa-psk ascii 7 105A0C0A11001D1908
dot11 ssid XXX
   authentication open
   authentication key-management wpa
   guest-mode
   wpa-psk ascii 7 080F15480C090D1221
username Cisco password 7 02250D480809
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
encryption mode ciphers tkip
ssid XXX
antenna gain 0
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface Dot11Radio1
no ip address
no ip route-cache
encryption mode ciphers tkip
ssid XXX
antenna gain 0
station-role workgroup-bridge
bridge-group 1
bridge-group 1 spanning-disabled
interface GigabitEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
no keepalive
bridge-group 1
bridge-group 1 spanning-disabled
interface BVI1
ip address dhcp
no ip route-cache
ip http server
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
bridge 1 route ip
bridge 1 aging-time 216000
line con 0
line vty 0 4
login local
end

Bpel-config.xml and soa-infra-config.xml file location in SOA 11g Pre-built

Hi frnds,
I have downloaded and started Oracle SOA 11g Pre-built from http://www.oracle.com/technetwork/middleware/soasuite/learnmore/vmsoa-172279.html and trying to configure it according to my requirements to upgrade from SOA 10g to 11g. But I can't find bpel-config.xml and soa-infra-config.xml files in BPEL domain home (i.e. /oracle/fmwhome/user_projects/domains/domain1).
Can you please help me?
BR, Lisan

None of those roles are intended to be granted to application users. Those are instead to limit various operational / support responsibilities. For instance, if you have "operators" for your production environment who are responsible for starting & stopping servers vs "Administrators" who are performing configuration changes, etc.
The SOA* versions can be used to separate even further - an "Operator" ( with rights in the WL console ) can be distinct from a "SOAOperator" ( with rights in the SOA /em ), etc.
http://download.oracle.com/docs/cd/E14571_01/integration.1111/e10226/appx_roles_privs.htm#insertedID2
also, here is a bit more on soa-infra roles:
http://download.oracle.com/docs/cd/E14571_01/integration.1111/e10226/appx_users.htm#insertedID4

– Enable high availability and redundancy for Cisco WAAS

How this is available
– Enable high availability and redundancy for Cisco WAAS appliances in data centers.
Thank you.

Hi,
You can serially cluster two WAE devices with the Cisco WAE Inline Network Adapter installed to provide higher availability in the data center if a device fails. If the current optimizing device fails, the inline group shuts down, or the device becomes the overloaded, the second WAE device in the cluster provides the optimization services. Deploying WAE devices in a serial inline cluster for scaling or load balancing is not supported.
More deatils here: Clustering Inline WAEs
Hope this helps.
Regards.
PS: Please mark this as Answered, if this answers your question.

Failesafe, Fallback, and redundant ideal config?

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