[Openstack] Load Balancers for Swift with nginx and pound
Hello,Stackers
First question:
I built a swift cluser,two proxy server , one nginx server ---load balance
for two swift proxy server,and two storage server
1.when I stop swift proxy service on one proxy server
The command swift -V 2 -A http://172.18.56.195:5000/v2.0 -U
service:glance -K pass list can not list all containers.
like this,before I stop the proxy service ,there are five containers.
root@proxy:~# swift -V 2 -A http://172.18.56.195:5000/v2.0 -U
service:glance -K pass list
1
2
myfile
test
test3
once I stop one proxy server ,there are only 3 .
root@proxy:~# swift -V 2 -A http://172.18.56.195:5000/v2.0 -U
service:glance -K pass list
1
2
test
the nginx.conf like this
worker_processes 1;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfileon;
keepalive_timeout 65;
client_max_body_size 10024M;
upstream swift {
server 172.18.56.199:8080;
server 172.18.56.235:8080;
}
server {
listen 8080;
server_name authserver;
location / {
proxy_pass http://authserver/;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
Question 2:
Because of the nginx problem ,so I change to use pound ,but
when I execute the command
swift -V 2 -A http://172.18.56.195:5000/v2.0 -U service:glance -K pass stat
and
swift -V 2 -A http://172.18.56.195:5000/v2.0 -U service:glance -K pass list
It runs successfully
but
can not execute post or upload
the error like this
root@proxy:~# swift -V 2 -A http://172.18.56.195:5000/v2.0 -U
service:glance -K pass post 3
Container PUT failed:
http://172.18.56.194:80/v1/AUTH_aadcbf03cf904eb68742478c9ae38eb4/3 501 Not
Implemented This method may not be used.
the pound.conf like this
Userroot
Group root
ListenHTTP
Address 172.18.56.194
Port80
End
Service
#HeadRequire (Host: your_host.com|Host: www.your_host.com)
BackEnd
Address 172.18.56.235
Port 8080
End
BackEnd
Address 172.18.56.199
Port 8080
End
End
Cheers
Wenna
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Re: [Openstack] Load Balancers for Swift with nginx and pound
Hi, Because of the nginx problem ,so I change to use pound ,but ... but can not execute post or upload regarding pound: you have to enable the PUT method to upload objects. Simply add xHTTP 2 in the section below: Userroot Group root ListenHTTP Address 172.18.56.194 Port80 xHTTP 2 End This will enable PUT and DELETE methods (see http://linux.die.net/man/8/pound for further details). But POST should work out of the box? Cheers, Christian ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] Load Balancers for Swift with nginx and pound
Also, just as general info, don't use nginx in front of Swift. nginx buffers request bodies, and that can become very problematic when uploading content into the Swift cluster (especially since the body could be up to 5GB--not too many of those requests and you'll overload your nginx box). Second, the inconsistency of the listings shouldn't be affected by your load balancer or proxy server. It's probably the result of Swift's eventual consistency model. If Swift was not able to update the account listings on container create, it will still return success to the client (for the container create), but it will queue the listing update to be performed later. THere is an updater process that runs to keep listings in sync and handle these situations. This is most obvious (ie you're most likely to see it) if you have had a failure in your cluster (eg network down or hard drive fail) and are trying to get the info after the failure has been restored but before the updater has done its work. SInce there are 3 copies of your account in the cluster, each with a listing of the containers, one may be out of sync. Perhaps you created a container while one of those drives was unavailable. The background replication and updater processes will take care of getting your listings back in to a consistent state. Make sure they are running, and check the logs to see if there are any problems. --John On Jun 14, 2013, at 4:27 AM, Christian Schwede i...@cschwede.de wrote: Hi, Because of the nginx problem ,so I change to use pound ,but ... but can not execute post or upload regarding pound: you have to enable the PUT method to upload objects. Simply add xHTTP 2 in the section below: Userroot Group root ListenHTTP Address 172.18.56.194 Port80 xHTTP 2 End This will enable PUT and DELETE methods (see http://linux.die.net/man/8/pound for further details). But POST should work out of the box? Cheers, Christian ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] Load Balancers for Swift with nginx and pound
On Fri, 14 Jun 2013 18:43:21 +0800 王娜 wangna...@gmail.com wrote: like this,before I stop the proxy service ,there are five containers. I would double-check that both proxies had same ring files. -- Pete ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
