similar to: ssh to failover target?

I'm running a pair of squids as an internal cache for some intermediate data used by a web server farm and currently doing failover by going through an F5 bigip. However, I'd like to avoid the bigip and use heartbeat since there are only two machines. I don't need to sync any content since it is a fast-changing cache and either machine can handle everything. Is it possible to

Is there a way to tell ssh that it is OK that the target of a command may be one of several machines, not necessarily the one it stuck in ~/.ssh/known_hosts last time around? This might be due to DNS round-robin or an HA failover. Setting StrictHostKeyChecking to no in /etc/ssh/ssh_config allows commands to complete but it still prints the warning which confuses people. -- Les Mikesell

Hi, Please forgive my terminology, still a bit new to T1s and such. I'm looking for a way to have 5 T1s from a carrier terminate into some type of box (multiplexer?), then be able to plug 7 asterisk servers into that box (each with single port T1 card) and be able to have 2 * servers go down at any given time and not actually have the carrier see that anything has happened. Obviously if a *

A machine I set up to run OpenNMS stopped working last night - no hardware alarm lights, but keyboard/monitor/network unresponsive. After a reboot I see a large stack of messages like this in /var/log/messages: ---- Aug 20 14:02:34 opennms-h-03 python: SELinux is preventing /usr/sbin/monitor-get-edid-using-vbe from mmap _zero access on the memprotect . ***** Plugin mmap_zero (53.1 confidence)

Is there a less drastic way to upgrade a pair of dhcpd servers on Centos 5.x than forklifting the old boxes out and hoping the replacements work?. The failover protocol seems to be incompatible so I just upgrade one at a time.... Has anyone been through this with a clever solution - like compiling a new dhcpd on the old boxes for an easy rollback? -- Les Mikesell lesmikesell at

We just had an interesting experience here. One of our AD servers was down for 90 minutes due to the server being physically moved to another location. This shouldn?t be a problem since there are 5 other AD servers in that ?group? that can take over the load. However it seems Samba (when used as a fileserver) for some reason is taking quite a long time to ?give up? on the first one and switch to

I'm looking into adding a cloud to one of my servers. Criteria: security accessible via Windoze, Android Mobile Devices, iPhones, iPads, Macs Preferably something living under one of the better repos, such as epel An active project doing updates and adding features. I don't suppose any of you have ideas for this? ;) -- John Hinton 877-777-1407 ext 502 http://www.ew3d.com Comprehensive

On rare occasions I want to run a remote X command (like 'meld' to interactively merge changes in files) and normally 'ssh -Y remote_host' from a terminal in an NX/freenx window that is acting as my desktop to start and any X program subsequently started would open in a new window via X-forwarding - at least when the target is a 5.x host. I don't do it often enough to remember

Here is the scenario: Asterisk 1.14.13; zaptel 1.4.6; Digium TE120P (same problem with various previous versions; same problem with different TE120P cards). The customer has a partial (10 B-Channel) PRI that when it is busy (eight or more B channels in use), tends to fail as shown below... [Jan 26 23:00:31] ERROR[31893] chan_zap.c: Write to 28 failed: Unknown error 500 [Jan 26 23:00:31]

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello, I read and find a way (well, there seems to be several equal implementations) to collect the ssh keys of machines. However they all give only the choice to choose between the key formats. But is there a way to collect both keys of a machine, the rsa _and_ the dss key (and maybe the rsa1 too)? I didn''t find a way to solve this as

I have no personal experience with rack mount chassis. >From the past postings, I reckon there are members, in this list, who have experience in rack mount setups and would like get their advice. To reduce the H/W cost, I am considering Linux mdadm RAID10 on a 2U chassis. I would appreciate clarification on the following: In rack mount chassis, do the cages that house the hard disks have

Is there any way to configure things so sshd starts even if a filesystem mentioned in fstab has errors that fail the automatic fsck at boot? Due to some power issues I'm sitting at work for a long fsck to complete - or more likely fail, so I can run it manually like it will tell me on the console. I'd much rather ssh in from home and do that later... -- Les Mikesell

Managed to implement this on asterisk v1.4.24.1, Also, Hangupcause updating to user field. However, this only works on the edge of my voice network (demarcation point) It does not work on my internal routing boxes as I use IAX to route between remote sites. I was thinking of using some sort of SIP variables to transport these results over the IAX trunk.. Any bright ideas folks???

I'd like to consolidate the services from several old servers onto 2 CentOS7 VMs that are currently running dhcpd in a balanced/failover configuration. It will simplify things to add the IPs from the old servers as aliases, at least temporarily so everything will continue to connect without changes. However, after adding the first one, I see in the logs that DHCPD is sending its DHCPACKs

I''ve been meaning to test this setup somewhere for a while, but never got the right app/(real) traffic/hardware to do it with. So maybe somebody can try it out and let us know if this works... It''s for applications running the same code/data on a cluster of machines, so this doesn''t apply to the majority of low-traffic sites out there. The goal is to avoid having to

We are running dovecot to provide authentication for postfix, using two mysql servers in a multi-master replication set as the password source: ---------------------------------------- # 2.0.13: /etc/dovecot/dovecot.conf # OS: Linux 2.6.37-gentoo-r4 x86_64 Gentoo Base System release 2.0.2 auth_mechanisms = plain login digest-md5 cram-md5 auth_verbose = yes passdb { args =

How does clustering relate to virtual hosts under xen? Can you make a 2 host failover cluster as the xen dom0 and have it take care of the guests or would you build 2 independent xen hosts and configure guests as failover clusters? Or is there some other approach? -- Les Mikesell lesmikesell at gmail.com

On Thu, Feb 4, 2010 at 2:03 PM, Les Mikesell <lesmikesell at gmail.com> wrote: > But, if someone ever gets cross-platform config management right or at > least close enough that it is worth learning yet another description > language I'd be very interested. ?Cfengine v3 might be getting there but > the windows version seems to be only available in the commercial build. OK,

Hello, I'm looking for test users for new iSCSI target software designed for multipath failover cluster nodes. I'm very interested in the virtual machine such as Hyper-V. So I'm also tuning the target for using VMs. I need an environmental report in particular other than FreeBSD 7.1 RELEASE p3 i386/PAE kernel w/ZFS. I welcome the report with other initiators below. If you are

We are using Centos behind an F5 Bigip load balancer. The linux box is using bonding and tagged VLAN's Everything works fine except that when traffic is forwarded from the BigIP to the linux box on the VLAN where the web server is running the linux box returns the traffic on the wrong VLAN, It returns traffic on the lowest ordered VLAN. ie. here is a tcpdump on my load balancer showing