Got 502 from server

[Godsmith]

Using the web CLI, I could run a few commands. The dinrplan-db was listed as suspended, and the machine had not started:

/app/bin $ fly apps list
NAME                                    OWNER           STATUS          PLATFORM        LATEST DEPLOY 
dinrplan                                personal        deployed        machines        8m28s ago    
dinrplan-db                             personal        suspended       machines                     
fly-builder-billowing-cloud-7534        personal        deployed        machines  

/app/bin $ fly checks list -a dinrplan-db
Health Checks for dinrplan-db
  NAME | STATUS  | MACHINE        | LAST UPDATED         | OUTPUT                      
-------*---------*----------------*----------------------*-----------------------------
  pg   | warning | 5683074f00d08e | 2023-06-26T20:33:15Z | the machine hasn't started  
-------*---------*----------------*----------------------*-----------------------------
  role | warning | 5683074f00d08e | 2023-06-26T20:33:15Z | the machine hasn't started  
-------*---------*----------------*----------------------*-----------------------------
  vm   | warning | 5683074f00d08e | 2023-06-26T20:33:15Z | the machine hasn't started  
-------*---------*----------------*----------------------*-----------------------------

However, I could not restart it:

/app/bin $ fly pg restart -a dinrplan-db
Error: no active leader found

But I could restart the machine dinrplan-db was running on, and that fixed it:

/app/bin $ fly machine list -a dinrplan-db
1 machines have been retrieved from app dinrplan-db.
View them in the UI here (​https://fly.io/apps/dinrplan-db/machines/)

dinrplan-db
ID              NAME                    STATE   REGION  IMAGE                           IP ADDRESS                              VOLUME                 CREATED                 LAST UPDATED            APP PLATFORM    PROCESS GROUP   SIZE                
5683074f00d08e  winter-forest-5654      stopped ams     flyio/postgres:14.6 (v0.0.34)   fdaa:0:a08f:a7b:23c5:dd86:e028:2        vol_5podq4qzxed4g8w1   2023-03-09T18:25:11Z    2023-06-26T20:33:15Z                    app             shared-cpu-1x:256MB

/app/bin $ fly machine restart 5683074f00d08e -a dinrplan-db
Restarting machine 5683074f00d08e
  Waiting for 5683074f00d08e to become healthy (started, 3/3)
Machine 5683074f00d08e restarted successfully!
/app/bin $ fly pg list
NAME            OWNER           STATUS          LATEST DEPLOY 
dinrplan-db     personal        deployed                     

/app/bin $ fly checks list -a dinrplan-db
Health Checks for dinrplan-db
  NAME | STATUS  | MACHINE        | LAST UPDATED | OUTPUT                                                                   
-------*---------*----------------*--------------*--------------------------------------------------------------------------
  pg   | passing | 5683074f00d08e | 25s ago      | [✓] transactions: read/write (192.07µs)                                  
       |         |                |              | [✓] connections: 11 used, 3 reserved, 300 max (3.89ms)                   
-------*---------*----------------*--------------*--------------------------------------------------------------------------
  role | passing | 5683074f00d08e | 26s ago      | leader                                                                   
-------*---------*----------------*--------------*--------------------------------------------------------------------------
  vm   | passing | 5683074f00d08e | 49s ago      | [✓] checkDisk: 805.58 MB (82.5%) free space on /data/ (32.12µs)          
       |         |                |              | [✓] checkLoad: load averages: 0.00 0.00 0.00 (57.18µs)                   
       |         |                |              | [✓] memory: system spent 0s of the last 60s waiting on memory (34.64µs)  
       |         |                |              | [✓] cpu: system spent 168ms of the last 60s waiting on cpu (15.91µs)     
       |         |                |              | [✓] io: system spent 246ms of the last 60s waiting on io (14.65µs)       
-------*---------*----------------*--------------*--------------------------------------------------------------------------
/app/bin $