负载均衡插件

plugins/op_load_balance/conf/load_balance.conf

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+## 指定共享内存
+lua_shared_dict healthcheck 10m;

plugins/op_load_balance/conf/rewrite.tpl.conf

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+location / {
+	proxy_pass http://{$UPSTREAM_NAME};
+
+	client_max_body_size 10m;
+	client_body_buffer_size 128k;
+
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+	proxy_set_header X-Real-IP $remote_addr;
+	proxy_set_header Host $proxy_host;
+	proxy_connect_timeout 90;
+	proxy_send_timeout 90;
+	proxy_read_timeout 90;
+	proxy_buffer_size 4k;
+	proxy_buffers 4 32k;
+	proxy_busy_buffers_size 64k;
+	proxy_temp_file_write_size 64k;
+}
+
+
+#location /upstream_status {
+#    allow 127.0.0.1;
+#    deny all;
+#    access_log off;
+#    default_type text/plain;
+#    content_by_lua_block {
+#        local hc = require "resty.upstream.healthcheck"
+#        ngx.say("OpenResty Worker PID: ", ngx.worker.pid())
+#        ngx.print(hc.status_page())
+#    }
+#}
+
+location /upstream_status_{$UPSTREAM_NAME} {
+    allow 127.0.0.1;
+    deny all;
+    access_log off;
+    default_type text/plain;
+    content_by_lua_block {
+    	local json = require "cjson"
+    	local ok, upstream = pcall(require, "ngx.upstream")
+		if not ok then
+			ngx.print("[]")
+			return
+		end
+
+	    local get_primary_peers = upstream.get_primary_peers
+		local get_backup_peers = upstream.get_backup_peers
+	    local upstream_name = "{$UPSTREAM_NAME}"
+
+	    peers, err = get_primary_peers(upstream_name)
+	    if not peers then
+            ngx.print("[]")
+            return
+        end
+
+	    peers_backup, err = get_backup_peers(upstream_name)
+	    if peers_backup then
+            for k, v in pairs(peers_backup) do
+	        	table.insert(peers,v)
+	        end
+        end
+
+	    ngx.print(json.encode(peers))
+    }
+}

plugins/op_load_balance/conf/upstream.tpl.conf

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+upstream {$UPSTREAM_NAME}
+{
+    {$NODE_ALGO}
+    {$NODE_SERVER_LIST}
+}