Re: stick-table and URL
Sorry for the problem.. but it was my problem.. its working now as expected.. again sorry for the troble.. -- Give a man a fish and you feed him for a day. Teach him how to fish and you feed him for a lifetime. On Wed, May 15, 2013 at 2:58 PM, Rui Luís rui.l...@gmail.com wrote: i was able to generate in the server the cookie (SERVERID) and i can pass it i also altered the line cookie SERVERID insert indirect nocache to cookie SERVERID and also try without the line however it is not working curl header: Set-Cookie: SERVERID=memtom1 is it possible to see the stick table content? -- Give a man a fish and you feed him for a day. Teach him how to fish and you feed him for a lifetime. On Mon, May 13, 2013 at 10:01 PM, Baptiste bed...@gmail.com wrote: Hi Rui, This is normal: HAProxy can't store in a stick table headers it has itself setup. So the line stick store-response set-cookie(SERVERID) table webservers_backend will work only if the server set-up the cookie. If you manage your server to setup this cookie, it may work with the configuration below: stick store-response set-cookie(SERVERID) table webservers_backend stick on cookie(SERVERID) table webservers_backend stick on url_param(SERVERID) table webservers_backend HAProxy will first try to collect stickiness information from the Cookie. If it can't find it, then it will look for the information in the url parameter. Baptiste On Mon, May 13, 2013 at 6:47 PM, Rui Luís rui.l...@gmail.com wrote: Good day. For a few days i am trying to use stick-table with cookies and url parameters because flash does not support cookies i have the following configuration: backend webservers_backend cookie SERVERID insert indirect nocache stick-table type string len 40 size 20k stick store-response set-cookie(SERVERID) table webservers_backend stick on url_param(SERVERID) table webservers_backend server memtom1 ip1 check inter 5000 cookie memtom1 server memtom2 ip2 check inter 5000 cookie memtom2 i also try other configurations.. however it does not work.. the call from flash.. getConfig?val1=xcv93ec9SERVERID=memtom2;%20path=/ i also try getConfig?val1=xcv93ec9SERVERID=memtom2 but it does not work for both.. I am entering a dead lock... -- Give a man a fish and you feed him for a day. Teach him how to fish and you feed him for a lifetime.
Re: HAProxy and MySQL failover
In the past I've used a ludicrously high setting on the primary for rise, the number of health checks it has to pass before it's considered to be up again. It's definitely a hack, though that's not to say I haven't used it in production ;-) Jonathan -- Jonathan Matthews Oxford, London, UK http://www.jpluscplusm.com/contact.html
resources in group not start parallel
Hi Guys, one question about group resource for starting parallel configuring with crmshell (Scientifix Linux 64 with pacemaker 1.18-7, cman-3.0.12.1-49 and crmsh-1.2.5-55). in my 2 node cluster I´ll configured a group with 40 ip-address resources for easy managing. Now I want that start the resources parallel. in my crmshell I cannot use the option meta ordered=false - these option is no longer disponse for my information Afte searching i found resource sets so I hope it´s correct for my way to parallel my resources but I can´t configure resource sets in crmshell. Next way for me is testing with xml-code directly in crmshell but here failures too for example crm configure xml rsc_colocation id=coloc-1 score=INFINITY \ resource_set id=collocated-set-1 sequential=false \ resource_ref id=A/ \ resource_ref id=B/ \ resource_ref id=C/ \ /resource_set \ resource_set id=collocated-set-2 sequential=true \ resource_ref id=D/ \ /resource_set \ /rsc_colocation ERROR: cannot parse xml chunk: rsc_colocation id=coloc-1 score=INFINITYresource_set id=collocated-set-1 sequential=falseresource_ref id=A/resource_ref id=B/resource_ref id=C//resource_setresource_set id=collocated-set-2 sequential=trueresource_ref id=D//resource_set/rsc_colocation ERROR: not well-formed (invalid token): line 1, column 19 How can I configure my resources to start parallel? Greetings Wolfgang
Re: HAProxy and MySQL failover
How about handling it on the backend. Setup your health checks on a different port and forward that port with iptables to the actual health check. When you fail over to the slave have some automation that detects that and shuts down iptables on the master. When your ready to receive traffic again startup iptables on the master so the health checks pass again Michael Glenney Sent from my iPhone On May 15, 2013, at 10:19 PM, Jayadevan M jayadevan.maym...@ibsplc.com wrote: Hi, We are using HAProxy to check for MySQL availability and failing over to a slave. Is it possible to stop HAProxy going back to the master once it is up? We want that to happen after manual intervention. Regards, Jayadevan DISCLAIMER: The information in this e-mail and any attachment is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received this e-mail in error, kindly contact the sender and destroy all copies of the original communication. IBS makes no warranty, express or implied, nor guarantees the accuracy, adequacy or completeness of the information contained in this email or any attachment and is not liable for any errors, defects, omissions, viruses or for resultant loss or damage, if any, direct or indirect.
HaProxy and kernel 3.8
Hello, our servers are hosted at OVH. Yesterday OVH asked their customers to update the kernel to 3.8.13 ( due to a local linux root exploit in 2.6.37 to 3.8.8 ). I've done the update (old kernel = 3.2.13) but now the load of our haproxy servers has increased ( x 4 ). It's still reasonable but i would like to know if i can provide any informations to know why. Server: Debian 6.0.7 HaProxy 1.4.22 Thanks.
RE: HaProxy and kernel 3.8
Hi Arnall! Yesterday OVH asked their customers to update the kernel to 3.8.13 ( due to a local linux root exploit in 2.6.37 to 3.8.8 ). I've done the update (old kernel = 3.2.13) but now the load of our haproxy servers has increased ( x 4 ). It's still reasonable but i would like to know if i can provide any informations to know why. Debian is backporting those fixes to their distro kernel, there is no need for you to upgrade to a kernel.org kernel - in fact this is a pretty major step. Doesn't the latest debian kernel update [1] contain the fix? Did the load increase in kernel or user space? Regards, Lukas [1] http://lists.debian.org/debian-security-announce/2013/msg00077.html
Re: HaProxy and kernel 3.8
Hi Lukas, the hoster provides its own kernel for the dedicated servers, i've updated via netboot to the 3.8.13 hoster kernel. So it's not the distro kernel nor kernel.org. For the load, how can i know if it's kernel or user space ? I have the load average with the top command. %CPU ( %us, %sy ... )is the same than before, only the load average has increased. Thanks. Le 16/05/2013 16:58, Lukas Tribus a écrit : Hi Arnall! Yesterday OVH asked their customers to update the kernel to 3.8.13 ( due to a local linux root exploit in 2.6.37 to 3.8.8 ). I've done the update (old kernel = 3.2.13) but now the load of our haproxy servers has increased ( x 4 ). It's still reasonable but i would like to know if i can provide any informations to know why. Debian is backporting those fixes to their distro kernel, there is no need for you to upgrade to a kernel.org kernel - in fact this is a pretty major step. Doesn't the latest debian kernel update [1] contain the fix? Did the load increase in kernel or user space? Regards, Lukas [1] http://lists.debian.org/debian-security-announce/2013/msg00077.html
RE: HaProxy and kernel 3.8
Hi, %CPU ( %us, %sy ... )is the same than before, only the load average has increased. Uhrm, I'm not sure how this is possible. What was the load average before the upgrade exactly? Please post the first 5 lines of top with the new kernel. Also, if you can boot the old kernel once, let it run for a few minutes and post a complete top from old and the new kernel, that would probably give as a better idea of what exactly the difference is. Lukas
Re: HaProxy and kernel 3.8
kernel 3.2.13 grsec 64: top - 19:13:09 up 6:15, 1 user, load average: 0.03, 0.03, 0.05 Tasks: 105 total, 1 running, 104 sleeping, 0 stopped, 0 zombie Cpu(s): 1.3%us, 2.1%sy, 0.0%ni, 79.7%id, 0.1%wa, 0.0%hi, 16.8%si, 0.0%st Mem: 7914788k total, 3255420k used, 4659368k free,44724k buffers Swap: 523260k total,0k used, 523260k free, 2865856k cached PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND 23095 haproxy 20 0 73144 53m 496 S 17 0.7 0:12.22 haproxy 2586 root 20 0 38272 4116 1012 S5 0.1 2:54.50 floodmon 2399 root 20 0 125m 1508 1096 S2 0.0 5:26.85 rsyslogd 23101 root 20 0 19112 1300 916 R0 0.0 0:00.10 top 1 root 20 0 8396 760 632 S0 0.0 0:01.12 init reboot with kernel 3.8.13 grsec 64: top - 19:23:22 up 8 min, 1 user, load average: 0.20, 0.19, 0.12 Tasks: 110 total, 1 running, 109 sleeping, 0 stopped, 0 zombie Cpu(s): 0.9%us, 1.9%sy, 0.0%ni, 80.8%id, 0.1%wa, 0.0%hi, 16.4%si, 0.0%st Mem: 7912412k total, 382768k used, 7529644k free, 5288k buffers Swap: 523260k total,0k used, 523260k free,94876k cached PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND 2773 haproxy 20 0 104m 77m 596 S 13 1.0 1:14.99 haproxy 3017 root 20 0 38276 4116 1012 S3 0.1 0:03.22 floodmon 2772 root 20 0 124m 1524 1096 S1 0.0 0:08.09 rsyslogd 1 root 20 0 8400 760 632 S0 0.0 0:00.58 init 2 root 20 0 000 S0 0.0 0:00.00 kthreadd reboot again with 3.2.13 grsec 64: top - 19:41:41 up 5 min, 1 user, load average: 0.04, 0.06, 0.04 Tasks: 103 total, 2 running, 101 sleeping, 0 stopped, 0 zombie Cpu(s): 0.4%us, 2.0%sy, 0.0%ni, 82.6%id, 0.1%wa, 0.0%hi, 15.0%si, 0.0%st Mem: 7914788k total, 369548k used, 7545240k free, 4976k buffers Swap: 523260k total,0k used, 523260k free,72872k cached PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND 2430 haproxy 20 0 132m 90m 596 R 10 1.2 0:46.42 haproxy 2622 root 20 0 38272 4116 1012 S4 0.1 0:02.46 floodmon 2421 root 20 0 124m 1396 1092 S1 0.0 0:05.15 rsyslogd 1 root 20 0 8396 760 632 S0 0.0 0:01.00 init 2 root 20 0 000 S0 0.0 0:00.00 kthreadd Le 16/05/2013 18:39, Lukas Tribus a écrit : Hi, %CPU ( %us, %sy ... )is the same than before, only the load average has increased. Uhrm, I'm not sure how this is possible. What was the load average before the upgrade exactly? Please post the first 5 lines of top with the new kernel. Also, if you can boot the old kernel once, let it run for a few minutes and post a complete top from old and the new kernel, that would probably give as a better idea of what exactly the difference is. Lukas
RE: HaProxy and kernel 3.8
Hi Arnall, looks like the load average calculation was wrong with the old kernel, it did not account for the soft interupts (XX%si): top - 19:13:09 up 6:15, 1 user, load average: 0.03, 0.03, 0.05 Cpu(s): 1.3%us, 2.1%sy, 0.0%ni, 79.7%id, 0.1%wa, 0.0%hi, 16.8%si, The CPU is always about 80% idle with both the old and the new kernel, and it also always spends about 16%si, and a few percents in the kernel and userspace. So it looks like you are not facing more real load, the two kernels only have a different understanding of what load is. Regards, Lukas
Re: HaProxy and kernel 3.8
Thanks Lukas, i've made some search on kernel 3.2.x and i've found some articles reporting inconsistent load average on tickless kernels (CONFIG_NO_HZ=y). It seems to be the case here. Thks again. Arnaud. Le 16/05/2013 20:44, Lukas Tribus a écrit : Hi Arnall, looks like the load average calculation was wrong with the old kernel, it did not account for the soft interupts (XX%si): top - 19:13:09 up 6:15, 1 user, load average: 0.03, 0.03, 0.05 Cpu(s): 1.3%us, 2.1%sy, 0.0%ni, 79.7%id, 0.1%wa, 0.0%hi, 16.8%si, The CPU is always about 80% idle with both the old and the new kernel, and it also always spends about 16%si, and a few percents in the kernel and userspace. So it looks like you are not facing more real load, the two kernels only have a different understanding of what load is. Regards, Lukas
