[Gluster-users] 503 Service unavailable load balancing with nginx

[Gabriel-Adrian Samfira]

As far as i can tell gluster uses swift for the object storage part. Swift
han an arbitrarily set maximum file size of 5 gb. After that you are
supposed to split the file in pieces and create a manifest file that is used
to concatenate the pieces when downloading. The "st" command does this
automatically. Thats the reason for setting clirnt_max_body_size to 5 G.
On 2011 8 1 09:15, "Gangalwar" <gaurav at gluster.com> wrote:
> Hi,
> Thanks for reporting this issue, it will be fixed in the next release.
> Also could i know why you are using client_max_body_size 5G; in the config
file?
>
> Thanks,
> Gaurav
>
> ________________________________
>
> Hello,
>
> Don't know if this is the best way to report a bug, but here goes :).
>
> I have 2 gluster servers running glusterfs-3.3beta1 on which I have
> configured the Object Storage platform. The servers are on a private
> network with no public IP's and i was trying to load balance the
> object storage system using nginx. It worked great except that every
> other request would be answered with a 503 error. Upon inspection of
> /var/log/swift/proxy.error I found the following traceback:
>
> Jul 29 13:28:53 storage05 proxy-server ERROR 500 Traceback (most
> recent call last):#012 File
>
"/usr/local/lib/python2.6/dist-packages/swift-1.4_dev-py2.6.egg/swift/obj/server.py",
> line 891, in __call__#012 res = getattr(self, req.method)(req)#012
> File
"/usr/local/lib/python2.6/dist-packages/swift-1.4_dev-py2.6.egg/swift/obj/server.py",
> line 733, in GET#012 if file_obj.metadata[X-ETAG] in
> request.if_none_match:#012NameError: global name 'X' is not
> defined#012 From Object Server 127.0.0.1:6010<http://127.0.0.1:6010>
>
> (txn:
> tx2abf0954-1043-4976-a692-39da260d9271)
>
> It seams that at line 733 in
>
/usr/local/lib/python2.6/dist-packages/swift-1.4_dev-py2.6.egg/swift/obj/server.py,
> is trying to call X-ETAG instead of X_ETAG (i think its a typo).
> Replacing the dash with an
> underscore takes care of the error on my system. If its of any help,
> here is the nginx config i used:
>
>
> worker_processes 1;
>
> events {
> worker_connections 1024;
> }
>
>
> http {
> include mime.types;
> default_type application/octet-stream;
>
> sendfile on;
> keepalive_timeout 65;
>
> upstream backend-secure {
> server 192.168.5.5:443<http://192.168.5.5:443>;
> server 192.168.5.6:443<http://192.168.5.6:443>;
> }
>
> server {
> listen 80;
> client_max_body_size 5G;
> location / {
> proxy_pass https://backend-secure;
> proxy_set_header Host $host;
> proxy_set_header X-Real-IP $remote_addr;
> proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
> proxy_set_header X-Forwarded-Proto https;
> proxy_redirect off;
>
> }
> }
> server {
> listen 443 ssl;
> client_max_body_size 5G;
> ssl_certificate /etc/nginx/ssl/cert.crt;
> ssl_certificate_key /etc/nginx/ssl/key.key;
> location / {
> proxy_pass https://backend-secure;
> proxy_set_header Host $host;
> proxy_set_header X-Real-IP $remote_addr;
> proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
> proxy_set_header X-Forwarded-Proto https;
> proxy_redirect off;
> }
> }
> }
>
>
> Best regards,
> Gabriel
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