[AWS] 502 Bad Gateway: Slackbot API 연결 오류

오류

/home/ubuntu/.pm2/logs/index-error.log last 15 lines:
0|index    |   code: 'slack_bolt_app_initialization_error'
0|index    | }
0|index    | AppInitializationError: You must provide an appToken when socketMode is set to true. To generate an appToken see: https://api.slack.com/apis/connections/socket#token
0|index    |     at App.initReceiver (/home/ubuntu/Do-IT/node_modules/@slack/bolt/dist/App.js:629:23)
0|index    |     at new App (/home/ubuntu/Do-IT/node_modules/@slack/bolt/dist/App.js:140:30)
0|index    |     at Object.<anonymous> (/home/ubuntu/Do-IT/slack.js:12:17)
0|index    |     at Module._compile (node:internal/modules/cjs/loader:1256:14)
0|index    |     at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
0|index    |     at Module.load (node:internal/modules/cjs/loader:1119:32)
0|index    |     at Module._load (node:internal/modules/cjs/loader:960:12)
0|index    |     at Module.require (node:internal/modules/cjs/loader:1143:19)
0|index    |     at Hook._require.Module.require (/usr/lib/node_modules/pm2/node_modules/require-in-the-middle/index.js:101:39)
0|index    |     at require (node:internal/modules/cjs/helpers:121:18) {
0|index    |   code: 'slack_bolt_app_initialization_error'
0|index    | }

Slack의 Socket Mode를 사용하려면 appToken을 제공해야 한다고 나타난 오류이다.

해결 과정

EC2 환경 변수 설정

cd ~

vim .bash_profile

export SLACK_BOT_TOKEN = 
export SLAC_SIGNING_SECRET = 
export CHANNEL_ID = 
export WEB_HOOK_URI = 
export SLACK_APP_TOKEN =

.bash_profile에 Slackbot 관련 정보를 입력한다.

esc

정보를 입력한 후, esc 버튼을 누른다.

:wq

:wq를 입력하면, 입력한 정보가 저장된다.

source .bash_profile

.bash_profile 파일의 변경사항이 저장된다.