I'm confusing when design an F5 system. I have to using F5 with two networks subnet, for each network we need a virtual IP. The problem is F5 have only one default gateway so I only can choose one of those networks router as default gw and the packet cannot back to client on another net. On A10 I used aVCS to deal with this problem, but not sure F5 BigIP have same feature. I'm consider using Direct return but not sure it's correct way.
Please share your idea.
Thank you very much, Gk.
I'm planning to migrate blade server HS22 and all modules (2 ESMs, 2Brocade SAN Switch modules) from chassis E to chassis H. Do I need to reconfigure all modules? And how about servers? Please share any exp. TIA.
I have Solaris 10 and 11 running on my system. I want to update all of them to newest patch. I don't have license or support plan for Solaris yet (the OS is pre-installed on my server). On Solaris 11 I heard I need a support license and a cert to connect to Oracle software repository. What about Solaris 10? Can I fetch patch bundle and install it without connect to Oracle (for both Solaris 10 and 11)?
TIA.
I have a server running RHEL6 with two NICs, each connect to separate switch. Two Cisco 3560 switches connected with a trunk link. The problem is the bonding link is not stable (lost some packets). When I unplug cable from 1 uplink from server to switch, many packets had been lost (about 50%). I've tried with all of Redhat bonding mode but cannot solve my problem. My question is: Can I do it and how?
Thanks in advance, giobuon
I have RHEL 6 with
# uname -r
2.6.32-131.0.15.el6.x86_64
I'm trying to build usbip modules on staging driver. Everything is OK. I have all needed *.ko files. But I cannot add those modules on running kernel.
# pwd
/lib/modules/2.6.32-131.0.15.el6.x86_64
# ls | grep ko
usbip_common_mod.ko
usbip.ko
vhci-hcd.ko
# modprobe usbip
FATAL: Error inserting usbip (/lib/modules/2.6.32-131.0.15.el6.x86_64/usbip.ko): Required key not available
# insmod usbip.ko
insmod: error inserting 'usbip.ko': -1 Required key not available
How can I add it? Do I need to rebuild whole kernel?
TIA, giobuon
Here is my diagram http://imageshack.us/photo/my-images/263/vpnt.png/ Server has two NIC: One connect to Internet, one connect to internal network. RAS service is configured with static IP pool on the same subnet of internal network (10.10.0.x). The problem is when a client connect to server, client can connect to server(10.10.0.10), but cannot connect to another host locate in internal network (10.10.0.11) even cannot ping to 10.10.0.50. RAS configured with IP routing enabled, client connect with options: Use default gateway on remote network. I'm messed up and can not figure out what wrong. Please help me T_T.
TIA, giobuon
I've installed Lync standard edition with: 1 front end server + 1 edge server. Lync web service running on 2nd NIC on front end server. When two external client (different LAN) trying to share a PPT slide: sender can see notification about uploading success and see the slide, another one got an error:
"This slide couldn't be downloaded. Please contact...., Error reason: Name not resolved"
. I'm trying to google but nothing found about this error. Another features: A/V conf, desktop sharing, whiteboard still works. I can see Lync connected to front end server but still have notification about not success sync corp address book. Any idea?
TIA,
giobuon
I'm using postfix to relay mail to Exchange 2010. Here is my config:
relayhost = [smtp.exchange.2010]
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/relay_passwd
smtp_sasl_security_options =
#smtp_sasl_mechanism_filter = ntlm
(/etc/postfix/relay_passwd contains login information of some accounts on Exchange) With this configuration I can relay email to Exchange. The problem is: the message send from Postfix has header:
X-MS-Exchange-Organization-AuthAs: Anonymous
and the message is treated like unAuthenicated message on Exchange system (i.e when sending to distribution group require senders are authenicated, I received error: #550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ##rfc822;[email protected]). I using Outlook with the same account as in Postfix and it can send without problem. The different I realized between two case is: Outlook send with NTLM auth mech, Postfix using LOGIN mech. Any idea?
I got error when using imapsync:
+ NO msg #8902 [6LRM0SNoLvi5ehuhf0ysRA:2796] in INBOX
+ Copying msg #8902:2796 to folder INBOX
flags from : [][]
Couldn't append msg #8902 (Subject:[Kaka]) to folder INBOX: 91 BAD Command Argument Error. 11
++++ Statistics ++++
Time : 24 sec
Messages transfered : 0
Messages skipped : 0
Total bytes transfered : 0
Total bytes skipped : 0
Total bytes error : 4661237
Detected 91 errors
What is the meaning of this error msg? How can I resolve it?
TIA.
I've installed MS Project Server 2010 and have to connect via a URL like this one: http://mysite/pwa/ I want to connect using new domain like that: http://newsite/. I can use redirection settings on IIS but cannot connect by Project Client. Anyway to do that thing?
Thanks.
I'm curious about Lefthand SAN solutions from HP. People from Dell have told me that Lefthand SAN's require at least two nodes and data must be mirroring between them so capacity is a half less compare to other SAN technology (e.g.Equal Logic). Is it true? Can a HP lefhand SAN be used as a stand-alone storage server with full RAID function (1, 10, 5)?
TIA, -giobuon
I have a caching-only dns server which get ~3k queries per second. Here is specs:
Xeon dual-core 2,8GHz 4GB of RAM
Centos 5x (kernel 2.6.18-164.15.1.el5PAE)
bind 9.4.2
rndc status: recursive clients: 666/4900/5000
About 300 new queries (not in cache) per second.
Bind always uses 100% on one core on single-thread config. After I recompiled it to multi-thread, it uses nearly 200% on two core :( No iowait, only sys and user. I searched around but didn't see any info about how bind use CPU. Why does it become bottleneck?
One more thing, here is RAM usage:
cat /proc/meminfo
MemTotal: 4147876 kB
MemFree: 1863972 kB
Buffers: 143632 kB
Cached: 372792 kB
SwapCached: 0 kB
Active: 1916804 kB
Inactive: 276056 kB
I've set max-cache-size to 0 to make sure bind can use as much RAM as it want, but it always stop at ~2GB. Since every second we got not cached queries so theoretically RAM must be exhausted but it wasn't.
Do you have any idea?
TIA,
-Gk
I'm planning use vmware to upgrade some of very aged server instead replace with all new bunch of server. VMWare vSphere sounds great but because of low budget I can't afford for both licenses and SANs. Without SAN, is vSphere worth the price? As I know without SAN, the VMWare HA, VMontion, FT is unavailable. So, do I need vSphere or only ESXi free version assume that I only need backup vm daily? Do you know any completed solution about backup on ESXi 4?
TIA,
-Gk