dynamic upstreams control on nginx
you can use start qconf by learn from QConf lua_nsc is using qconf 1.1 and if you want to use 1.2 or higher please replace the ./package/libqconf.so and ./package/qconf.lua to 1.2 version
my nginx config argument are as follow: configure arguments: --user=web --group=web --prefix=/data/server/nginx --with-http_realip_module --with-http_stub_status_module --with-http_sysguard_module --with-syslog --with-http_ssl_module --with-http_v2_module --with-http_dyups_module --add-module=../ngx_cache_purge-2.1 --with-google_perftools_module --add-module=../ngx_devel_kit-0.2.19 --add-module=../lua-nginx-module-0.10.6 --add-module=../lua-upstream-nginx-module-master --with-ld-opt='-ldl -ltcmalloc'
cp demos/nginx.conf /path/to/nginx/conf/nginx.conf
cp -r demos/upstream /path/to/nginx/conf/upstream
cp -r demos/vhosts /path/to/nginx/conf/vhoststhe zookeeper path prefix was configed in nsc_config.lua zk_path_tpl nsc_config.lua config example:
local NSC_CONFIG = {
-- name service config
name_service = {
zk_path_tpl = "/arch_group/test/%s",
lrucache_timeout = 60, -- 60s
lrucache_size = 200, -- lrucache size
},
}
return NSC_CONFIGzookeeper config example: * node1 path is "/arch_group/test/test_namespace/192.168.56.101_10001"; node1 value is {"weight": 3} * ode2 path is "/arch_group/test/test_namespace/192.168.56.101_10002"; node2 value is {"weight": 2} * ode3 path is "/arch_group/test/test_namespace/192.168.56.101_10003"; node3 value is {"weight": 1}
upstream nsc.test_namespace {
server 192.168.56.101:8888 max_fails=2 fail_timeout=2s weight=1; # only for nginx -t check
balancer_by_lua_block {
-- strategy can add backup strategy like nginx backup servers
local strategy = {
host = "192.168.56.101", -- will use this host as default
backup = {
"192.168.56.101",
},
}
nsc.balance("test_namespace", strategy)
}
keepalive 64;
}
server {
listen 6677;
server_name 192.168.56.101;
access_log /data/logs/nginx.log main;
location / {
default_type 'text/plain';
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_redirect off;
proxy_connect_timeout 10;
proxy_send_timeout 30;
proxy_read_timeout 30;
proxy_pass http://nsc.test_namespace;
}
location = /debug/upstream/servers {
default_type 'text/json';
content_by_lua_block {
-- strategy can add backup strategy like nginx backup servers
local strategy = {
host = "192.168.56.101",
backup = {
"192.168.56.101",
},
}
nsc.get_servers("test_namespace", strategy)
}
}
}
- send request to nginx vhosts curl http://localhost:6677/
- get what servers were configed in dynamic upstream curl http://localhost:6677/debug/upstream/servers
NGINX QPS can reach 10W/s, in theroy there was little performance impact, lua_nsc is at most 1% performance hit on nginx use ab to benchmark
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