request help: Set environment variable failed

[zhixiongdu027]

Issue description

In this pr: #4880

I had set environment variable

• KUBERNETES_CLIENT_TOKEN
• KUBERNETES_CLIENT_TOKEN_FILE

in test file BEGIN

and ,It's work fine but CI Centos7 / run ci on centos7

error message is

2021-09-19T05:51:56.3501884Z #   Failed test 'TEST 3: use specify parameters - pattern "[error]" should not match any line in error.log but matches line "2021/09/19 05:51:55 [error] 20603#20603: init_worker_by_lua error: /apisix/apisix/discovery/k8s.lua:698: not found environment variable KUBERNETES_CLIENT_TOKEN" (req 0)

2021-09-19T05:51:59.3124172Z #   Failed test 'TEST 5: use token_file - pattern "[error]" should not match any line in error.log but matches line "2021/09/19 05:51:57 [error] 20627#20627: init_worker_by_lua error: /apisix/apisix/discovery/k8s.lua:698: not found environment variable KUBERNETES_CLIENT_TOKEN_FILE" (req 0)

Someone can help ? TKS

Environment

• apisix version (cmd: apisix version):
• OS (cmd: uname -a):
• OpenResty / Nginx version (cmd: nginx -V or openresty -V):
• etcd version, if have (cmd: run curl http://127.0.0.1:9090/v1/server_info to get the info from server-info API):
• apisix-dashboard version, if have:
• the plugin runner version, if the issue is about a plugin runner (cmd: depended on the kind of runner):
• luarocks version, if the issue is about installation (cmd: luarocks --version):

[spacewander]

The CentOS CI runs tests inside a docker. So it can't access the token file.
Maybe we can skip the test when it is running inside CentOS? We can do it like this:

apisix/t/plugin/gzip.t

Line 23 in 46cabd6

plan(skip_all => "apisix-nginx-module not installed");

[zhixiongdu027]

TKS.
I had update CenOS Ci Workflow and mount /tmp:/tmp into docker. It's work fine.