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The following commit(s) were added to refs/heads/master by this push:
new 18909a2 feat: allow disabling search option in resolv.conf (#3609)
18909a2 is described below
commit 18909a2a0bf62fd5dc5e1dbcc59ef563545ff359
Author: 罗泽轩 <spacewander...@gmail.com>
AuthorDate: Sat Feb 20 15:38:45 2021 +0800
feat: allow disabling search option in resolv.conf (#3609)
Also disable it in the test to avoid occassional DNS query timeout.
---
apisix/core/utils.lua | 7 +++++++
conf/config-default.yaml | 1 +
t/APISIX.pm | 1 +
t/core/utils.t | 28 ++++++++++++++++++++++++++++
4 files changed, 37 insertions(+)
diff --git a/apisix/core/utils.lua b/apisix/core/utils.lua
index 788f3e2..f302790 100644
--- a/apisix/core/utils.lua
+++ b/apisix/core/utils.lua
@@ -88,6 +88,8 @@ local function dns_parse(domain)
if dns_resolvers ~= current_inited_resolvers then
local local_conf = config_local.local_conf()
local valid = table.try_read_attr(local_conf, "apisix",
"dns_resolver_valid")
+ local enable_resolv_search_opt = table.try_read_attr(local_conf,
"apisix",
+
"enable_resolv_search_opt")
local opts = {
ipv6 = true,
@@ -97,6 +99,11 @@ local function dns_parse(domain)
order = {"last", "A", "AAAA", "CNAME"}, -- avoid querying SRV (we
don't support it yet)
validTtl = valid,
}
+
+ if not enable_resolv_search_opt then
+ opts.search = {}
+ end
+
local ok, err = dns_client.init(opts)
if not ok then
return nil, "failed to init the dns client: " .. err
diff --git a/conf/config-default.yaml b/conf/config-default.yaml
index 885007d..14b5168 100644
--- a/conf/config-default.yaml
+++ b/conf/config-default.yaml
@@ -110,6 +110,7 @@ apisix:
# - 8.8.8.8
# dns_resolver_valid: 30 # if given, override the TTL of the valid
records. The unit is second.
resolver_timeout: 5 # resolver timeout
+ enable_resolv_search_opt: true # enable search option in resolv.conf
ssl:
enable: true
enable_http2: true
diff --git a/t/APISIX.pm b/t/APISIX.pm
index 618443b..d5880cb 100644
--- a/t/APISIX.pm
+++ b/t/APISIX.pm
@@ -93,6 +93,7 @@ apisix:
tcp:
- 9100
admin_key: null
+ enable_resolv_search_opt: false
_EOC_
my $etcd_enable_auth = $ENV{"ETCD_ENABLE_AUTH"} || "false";
diff --git a/t/core/utils.t b/t/core/utils.t
index 42cba26..0e0b8ee 100644
--- a/t/core/utils.t
+++ b/t/core/utils.t
@@ -271,6 +271,10 @@ ip_info:
{"address":"127.0.0.1","class":1,"name":"test.com","ttl":315360000,"typ
=== TEST 8: search host with '.org' suffix
+--- yaml_config
+apisix:
+ node_listen: 1984
+ enable_resolv_search_opt: true
--- config
location /t {
content_by_lua_block {
@@ -289,3 +293,27 @@ GET /t
.+"name":"apisix\.apache\.org".+
--- no_error_log
[error]
+
+
+
+=== TEST 9: disable search option
+--- yaml_config
+apisix:
+ node_listen: 1984
+ enable_resolv_search_opt: false
+--- config
+ location /t {
+ content_by_lua_block {
+ local core = require("apisix.core")
+ local ip_info, err = core.utils.dns_parse("apisix")
+ if not ip_info then
+ core.log.error("failed to parse domain: ", host, ", error:
",err)
+ return
+ end
+ ngx.say("ip_info: ", require("toolkit.json").encode(ip_info))
+ }
+ }
+--- request
+GET /t
+--- error_log
+error: failed to query the DNS server
