Re: Mixed TCP and HTTP switching
Hi Thanks This worked really well. Got the configuration we wanted up and running in about 10 mins. Unfortunately the plan turned out to not work due to other issues (not haproxy related), so I will instead be perusing a different config, where I will care more about max number of connections to one load balancing box. Any questions on that I will send in that thread :-) laurie On 4 June 2010 11:30, Willy Tarreau w...@1wt.eu wrote: On Fri, Jun 04, 2010 at 10:45:02AM +0100, Laurie Young wrote: Thanks - I'm going to give this a try - but I can't find the git url to access the latest source so I can try building 1.4.7 :-( This one will do the job : haproxy.1wt.eu/download/1.4/src/snapshot/ Sorry if i'm being dumb, my excuse is it's a Friday hehe apparently fridays have the same effect everywhere :-) Willy -- Dr Laurie Young Scrum Master New Bamboo Follow me on twitter: @wildfalcon Follow us on twitter: @newbamboo Creating fresh, flexible and fast-growing web applications is our passion. 3rd Floor, Gensurco House, 46A Rosebery Avenue, London, EC1R 4RP http://www.new-bamboo.co.uk
Re: Mixed TCP and HTTP switching
On Wed, Jun 02, 2010 at 04:18:33PM +0100, Laurie Young wrote: Hi everyone I have a problem, and I'm not sure if HAProxy can solve it I have a range of different requests coming in on a server to port 80, and am using HAProxy to switch them to the relevant back end servers. Most of these requests are HTTP requests and I have layer 7 mode working fine, doing everything i need Now I have to also send a tcp request though the same port. I need HAProxy to detect if it is a tcp request, and if so route it to server 1, otherwise parse the HTTP and work out which server to use based on the HTTP content Is this possible? Yes this is possible with version 1.4. For this you need to have a TCP frontend and an HTTP backend. Using tcp inspection rules, you define how long you wait for an HTTP request. If a valid HTTP request comes in time, you switch to the HTTP backend. If none comes in time, of if the traffic is not HTTP, then you use the TCP backend. Some people use this to open SSH on port 80 or 443 ;-) However there are some drawbacks. Since the logs are defined by the frontend, you won't benefit from HTTP logging, you'll only have TCP logging. Also, if you want to try this, you should upgrade to 1.4.7 (which is not yet released but available as a snapshot) because it fixes an issue with the HTTP protocol detection. One field was not properly initialized, so once HTTP was detected on a connection, it was likely that further connections would be detected as HTTP too. Example of usage : frontend bind :80 mode tcp option tcplog tcp-request inspect-delay 5s tcp-request content accept if HTTP use_backend http_backend if HTTP default_backend tcp_backend backend tcp_backend # tcp-only config backend http_backend # http-only config mode http Regards, Willy
Re: Mixed TCP and HTTP switching
Excellent - this may be what we need Can I do further http swittching in the backend (based on hostnames) or can this only be done in the front end? On 4 June 2010 08:56, Willy Tarreau w...@1wt.eu wrote: On Wed, Jun 02, 2010 at 04:18:33PM +0100, Laurie Young wrote: Hi everyone I have a problem, and I'm not sure if HAProxy can solve it I have a range of different requests coming in on a server to port 80, and am using HAProxy to switch them to the relevant back end servers. Most of these requests are HTTP requests and I have layer 7 mode working fine, doing everything i need Now I have to also send a tcp request though the same port. I need HAProxy to detect if it is a tcp request, and if so route it to server 1, otherwise parse the HTTP and work out which server to use based on the HTTP content Is this possible? Yes this is possible with version 1.4. For this you need to have a TCP frontend and an HTTP backend. Using tcp inspection rules, you define how long you wait for an HTTP request. If a valid HTTP request comes in time, you switch to the HTTP backend. If none comes in time, of if the traffic is not HTTP, then you use the TCP backend. Some people use this to open SSH on port 80 or 443 ;-) However there are some drawbacks. Since the logs are defined by the frontend, you won't benefit from HTTP logging, you'll only have TCP logging. Also, if you want to try this, you should upgrade to 1.4.7 (which is not yet released but available as a snapshot) because it fixes an issue with the HTTP protocol detection. One field was not properly initialized, so once HTTP was detected on a connection, it was likely that further connections would be detected as HTTP too. Example of usage : frontend bind :80 mode tcp option tcplog tcp-request inspect-delay 5s tcp-request content accept if HTTP use_backend http_backend if HTTP default_backend tcp_backend backend tcp_backend # tcp-only config backend http_backend # http-only config mode http Regards, Willy -- Dr Laurie Young Scrum Master New Bamboo Follow me on twitter: @wildfalcon Follow us on twitter: @newbamboo Creating fresh, flexible and fast-growing web applications is our passion. 3rd Floor, Gensurco House, 46A Rosebery Avenue, London, EC1R 4RP http://www.new-bamboo.co.uk
Re: Mixed TCP and HTTP switching
Thanks - I'm going to give this a try - but I can't find the git url to access the latest source so I can try building 1.4.7 :-( Sorry if i'm being dumb, my excuse is it's a Friday On 4 June 2010 08:56, Willy Tarreau w...@1wt.eu wrote: On Wed, Jun 02, 2010 at 04:18:33PM +0100, Laurie Young wrote: Hi everyone I have a problem, and I'm not sure if HAProxy can solve it I have a range of different requests coming in on a server to port 80, and am using HAProxy to switch them to the relevant back end servers. Most of these requests are HTTP requests and I have layer 7 mode working fine, doing everything i need Now I have to also send a tcp request though the same port. I need HAProxy to detect if it is a tcp request, and if so route it to server 1, otherwise parse the HTTP and work out which server to use based on the HTTP content Is this possible? Yes this is possible with version 1.4. For this you need to have a TCP frontend and an HTTP backend. Using tcp inspection rules, you define how long you wait for an HTTP request. If a valid HTTP request comes in time, you switch to the HTTP backend. If none comes in time, of if the traffic is not HTTP, then you use the TCP backend. Some people use this to open SSH on port 80 or 443 ;-) However there are some drawbacks. Since the logs are defined by the frontend, you won't benefit from HTTP logging, you'll only have TCP logging. Also, if you want to try this, you should upgrade to 1.4.7 (which is not yet released but available as a snapshot) because it fixes an issue with the HTTP protocol detection. One field was not properly initialized, so once HTTP was detected on a connection, it was likely that further connections would be detected as HTTP too. Example of usage : frontend bind :80 mode tcp option tcplog tcp-request inspect-delay 5s tcp-request content accept if HTTP use_backend http_backend if HTTP default_backend tcp_backend backend tcp_backend # tcp-only config backend http_backend # http-only config mode http Regards, Willy -- Dr Laurie Young Scrum Master New Bamboo Follow me on twitter: @wildfalcon Follow us on twitter: @newbamboo Creating fresh, flexible and fast-growing web applications is our passion. 3rd Floor, Gensurco House, 46A Rosebery Avenue, London, EC1R 4RP http://www.new-bamboo.co.uk
Mixed TCP and HTTP switching
Hi everyone I have a problem, and I'm not sure if HAProxy can solve it I have a range of different requests coming in on a server to port 80, and am using HAProxy to switch them to the relevant back end servers. Most of these requests are HTTP requests and I have layer 7 mode working fine, doing everything i need Now I have to also send a tcp request though the same port. I need HAProxy to detect if it is a tcp request, and if so route it to server 1, otherwise parse the HTTP and work out which server to use based on the HTTP content Is this possible? Laurie -- Dr Laurie Young Scrum Master New Bamboo Follow me on twitter: @wildfalcon Follow us on twitter: @newbamboo Creating fresh, flexible and fast-growing web applications is our passion. 3rd Floor, Gensurco House, 46A Rosebery Avenue, London, EC1R 4RP http://www.new-bamboo.co.uk
