feat: support for configuring the number of etcd health check retries (…

…apache#6322)

Co-authored-by: tzssangglass <tzssangglass@gmail.com>
Co-authored-by: 罗泽轩 <spacewanderlzx@gmail.com>

apisix/cli/etcd.lua

@@ -196,7 +196,9 @@ function _M.init(env, args)
 
         local res, err
         local retry_time = 0
-        while retry_time < 2 do
+
+        local health_check_retry = tonumber(yaml_conf.etcd.health_check_retry) or 2
+        while retry_time < health_check_retry do
             res, err = request(version_url, yaml_conf)
             -- In case of failure, request returns nil followed by an error message.
             -- Else the first return value is the response body

conf/config-default.yaml

@@ -274,6 +274,7 @@ etcd:
   timeout: 30                     # 30 seconds
   #resync_delay: 5                # when sync failed and a rest is needed, resync after the configured seconds plus 50% random jitter
   #health_check_timeout: 10       # etcd retry the unhealthy nodes after the configured seconds
+  health_check_retry: 2           # etcd retry time that only affects the health check, default 2
   #user: root                     # root username for etcd
   #password: 5tHkHhYkjr6cQY       # root password for etcd
   tls: