Hi all,
I'm using haproxy with a riak 2.1.4 in a 5 node cluster. I'm getting fairly
consistent enotconn errors in riak which happen to coincide with client
failures. We've setup haproxy as recommended
(https://gist.github.com/gburd/1507077) see below. I'm running a leveldb
backend with 9 GB max memory (I can go higher if needed). I'm not sure at this
point if I have a network issue or leveldb / riak issue.
2016-09-14 08:10:16 =CRASH REPORT====
crasher:
initial call: mochiweb_acceptor:init/3
pid: <0.28104.442>
registered_name: []
exception error:
{function_clause,[{webmachine_request,peer_from_peername,[{error,enotconn},{webmachine_request,{wm_reqstate,#Port<0.6539192>,[],undefined,undefined,undefined,{wm_reqdata,'GET',http,{1,0},"defined_in_wm_req_srv_init","defined_in_wm_req_srv_init",defined_on_call,defined_in_load_dispatch_data,"/ping","/ping",[],defined_in_load_dispatch_data,"defined_in_load_dispatch_data",500,1073741824,67108864,[],[],{0,nil},not_fetched_yet,false,{0,nil},<<>>,follow_request,undefined,undefined,[]},undefined,undefined,undefined}}],[{file,"src/webmachine_request.erl"},{line,150}]},{webmachine_request,get_peer,1,[{file,"src/webmachine_request.erl"},{line,124}]},{webmachine,new_request,2,[{file,"src/webmachine.erl"},{line,69}]},{webmachine_mochiweb,loop,2,[{file,"src/webmachine_mochiweb.erl"},{line,49}]},{mochiweb_http,headers,5,[{file,"src/mochiweb_http.erl"},{line,96}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}
ancestors: ['http://192.168.18.64:8098_mochiweb',riak_api_sup,<0.319.0>]
messages: []
links: [<0.325.0>,#Port<0.6539192>]
dictionary: []
trap_exit: false
status: running
heap_size: 987
stack_size: 27
reductions: 963
neighbours:
# haproxy.cfg
global
log 127.0.0.1 local2 info
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 256000
user haproxy
group haproxy
spread-checks 5
daemon
quiet
stats socket /var/lib/haproxy/stats
defaults
log global
option httplog
option dontlognull
option redispatch
timeout connect 5000
maxconn 256000
frontend main *:80
mode http
acl url_static path_beg -i /static /images /javascript
/stylesheets
acl url_static path_end -i .jpg .gif .png .css .js
backend static
balance roundrobin
server static 127.0.0.1:4331 check
backend app
mode http
balance roundrobin
server wmts1riak 192.168.18.72:80 check
server wmts2riak 192.168.18.73:80 check
backend riak_rest_backend
mode http
balance roundrobin
option httpchk GET /ping
option httplog
server riak1 192.168.18.64:8098 weight 1 maxconn 1024 check
server riak2 192.168.18.65:8098 weight 1 maxconn 1024 check
server riak3 192.168.18.66:8098 weight 1 maxconn 1024 check
server riak4 192.168.18.67:8098 weight 1 maxconn 1024 check
server riak5 192.168.18.68:8098 weight 1 maxconn 1024 check
frontend riak_rest
bind *:8098
mode http
option contstats
default_backend riak_rest_backend
backend riak_protocol_buffer_backend
balance leastconn
mode tcp
option tcpka
option srvtcpka
server riak1 192.168.18.64:8087 weight 1 maxconn 1024 check
server riak2 192.168.18.65:8087 weight 1 maxconn 1024 check
server riak3 192.168.18.66:8087 weight 1 maxconn 1024 check
server riak4 192.168.18.67:8087 weight 1 maxconn 1024 check
server riak5 192.168.18.68:8087 weight 1 maxconn 1024 check
frontend riak_protocol_buffer
bind *:8087
mode tcp
option tcplog
option contstats
mode tcp
option tcpka
option srvtcpka
default_backend riak_protocol_buffer_backend
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