[users@httpd] BALANCER: (balancer://cluster). All workers are in error state for route in apache error logs and service temporarily unavailanble for tomcat

Hello Team, I have configured apache to load balanced six tomcat instances in the backend using mod_proxy_balance and mod_proxy_ajp modules. I am frequently getting service temporary unavailable message and following error in the apache error logs. [Mon Feb 06 09:07:28 2012] [error] proxy:

Re: [users@httpd] High availabilty through Apache httpd

Hi, Perhaps look at haproxy instead of apache. Run it on two or more machines with multiple IPs and have then distribute the load to your Tomcat worker nodes. Kind Regards, Jaco On 06/02/12 11:09, Harsimranjit singh Kler wrote: Hi How i can make apache httpd High Available(HA)?.If i want

Re: [users@httpd] High availabilty through Apache httpd

Its is not possible for me to use haproxy in my setup. Is there alternate to use with Apache only? On Mon, Feb 6, 2012 at 2:43 PM, Jaco Kroon j...@uls.co.za wrote: Hi, Perhaps look at haproxy instead of apache. Run it on two or more machines with multiple IPs and have then distribute the

Re: [users@httpd] How to make Apache mod_deflate and Transfer-encoding : Chunked work together?

On 2/1/2012 3:48 AM, Matus UHLAR - fantomas wrote: Of course. But the original question was, why is chunking not used, even when Content-Length was not sent? I don't know HTTP/1.1 enough to answwer this question, do you? On 01.02.12 12:50, William A. Rowe Jr. wrote: Yes; because the entire

Re: [users@httpd] High availabilty through Apache httpd

Not that I'm aware of but someone else on the list may very well know something I don't. May I inquire as to why not? Kind Regards, Jaco On 06/02/12 11:17, Harsimranjit singh Kler wrote: Its is not possible for me to use haproxy in my setup. Is there alternate to use with Apache only?

RE: [users@httpd] High availabilty through Apache httpd

If you just want failover on the head apache: use two nodes with vrrp + keepalived (if you're on linux) to monitor your service. If you need load-balancing, then you should use two VRRP addresses with DNS round-robin. But you'll stumble on client-server persistence problem if you don't use

Re: [users@httpd] High availabilty through Apache httpd

Intially i want failover setup only with two node can you explain little about vrrp + keepalived. else some reference link how i can achive it step by step(on linux setup only) ? On Mon, Feb 6, 2012 at 3:12 PM, DENIS Laurent laurent.de...@mail.mobistar.be wrote: If you just want failover on

RE: [users@httpd] High availabilty through Apache httpd

Basically, you have one IP address that is used by two hosts, active one only one at a time. If one service fails, the other node take the IP thanks to keepalived. This works only if you're on the same network segment. Google on vrrp keepalived apache and you'll get this first link:

Re: [users@httpd] High availabilty through Apache httpd

Thanks for details. One last question Why Apache not Support failover support which is basic for any load balancer setup ? Any plan of HA in future releases of httpd? On Mon, Feb 6, 2012 at 4:08 PM, DENIS Laurent laurent.de...@mail.mobistar.be wrote: Basically, you have one IP address that

Re: [users@httpd] High availabilty through Apache httpd

On Mon, Feb 6, 2012 at 5:46 AM, Harsimranjit singh Kler simran...@gmail.com wrote: Thanks for details. One last question Why Apache not Support failover support which is basic for any load balancer setup ? It's a webserver. If you want a load balancer, put a load balancer in front of it.

RE: [users@httpd] High availabilty through Apache httpd

Apache supports load-balancing, you can put several in parallel without any problem J And it does a very nice job in load-balancing/failover for the backends through mod_proxy_balancer (though a health-check option at HTTP level would be welcome) The problem is more with the applications

Re: [users@httpd] Configuration file effects on security

On 2012-02-03 18:22, Silviu Andrica wrote: Hi, I was wondering if you know any tool that checks how secure an Apache configuration is. I know about Nikto and W3AF, but those tools are targeted at web applications. I'm more interested in tools that target web servers. Also, can you recommend

[users@httpd] Need Help - Company trying to steal my domain

A company (Borges, USA, Inc.) is trying to steal a domain that I own, and have owned for over 15 years (caramia.com). They claim that they have the name Cara Mia trade marked. (Cara mia means My dear in Italian and is a very common term of endearment). They have filed a complaint against me

RE: [users@httpd] Configure httpd not to send responses

Thanks for your reply. I could and I have written a small webserver in Python as a test as well. Of course with this I will have to duplicate the functionality of mod_evasive also in my code. I am not sure that this benefits me though, because I think that either web server will respond

RE: [users@httpd] Configure httpd not to send responses

Then redirect you error pages in the same way too. On Feb 7, 2012 5:05 AM, Andrew Hester andrew.hes...@mouser.com wrote: Thanks for your reply. ** ** I could and I have written a small webserver in Python as a test as well. Of course with this I will have to duplicate the

Re: [users@httpd] High availabilty through Apache httpd

hi Denis thanks yes Apache Httpd do load balancing properly :-) only concern with fail over support of httpd itself. eg. in my setup Machine1 having : Apache httpd(2.2.17) and modjk (1.2.30)(Session stickyness true and clustering not enabled) Machine2:Tomcat6(worker1,worker2)

Re: [users@httpd] High availabilty through Apache httpd

You should ask this question on some HA mailing list. There are lots of HA solutions out there so google and you will find one that suits you. Search for DRBD, heartbeat, pacemaker for example or cluster HA with active/standby in your case. On Feb 7, 2012 5:22 PM, Harsimranjit singh Kler