DB server down for > 2 hours.

In logs I see something like this:
2022-11-25T07:20:18.050 app[5d46295d] fra [info] keeper | 2022-11-25T07:20:18.049Z ERROR cmd/keeper.go:719 cannot get configured pg parameters {"error": "dial unix /tmp/.s.PGSQL.5433: connect: no such file or directory"}

Scaling, updating image, restarting does not help.

Still an issue, nothing helps so far. Here’s the health checks:

  NAME | STATUS   | ALLOCATION | REGION | TYPE | LAST UPDATED | OUTPUT
-------*----------*------------*--------*------*--------------*---------------------------------------------------------------------------------------------------------------------------------------------
  vm   | passing  | b0e48f91   | ams    | HTTP | 4s ago       | HTTP GET http://172.19.11.154:5500/flycheck/vm: 200 OK Output: [✓]
       |          |            |        |      |              |
       |          |            |        |      |              | checkDisk: 18.65 GB (95.0%) free space on /data/ (80.46µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | checkLoad: load averages: 0.00 0.00 0.00 (68.51µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | memory: system spent 0s of the last 60s waiting on memory (50.12µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | cpu: system spent 120ms of the last 60s waiting on cpu (30.81µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | io: system spent 330ms of the last 60s waiting on io (24.52µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              |
  role | critical | b0e48f91   | ams    | HTTP | 44s ago      | failed to connect to local node: context deadline exceeded[✓]
       |          |            |        |      |              |
       |          |            |        |      |              |
  pg   | critical | b0e48f91   | ams    | HTTP | 49s ago      | HTTP GET http://172.19.11.154:5500/flycheck/pg: 500 Internal Server Error Output: failed to connect to proxy: context deadline exceeded[✓]
       |          |            |        |      |              |
       |          |            |        |      |              |
  vm   | passing  | 55ea5c1a   | ams    | HTTP | 3m27s ago    | HTTP GET http://172.19.14.218:5500/flycheck/vm: 200 OK Output: [✓]
       |          |            |        |      |              |
       |          |            |        |      |              | checkDisk: 18.65 GB (95.0%) free space on /data/ (33.65µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | checkLoad: load averages: 0.00 0.00 0.01 (53.58µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | memory: system spent 0s of the last 60s waiting on memory (29.8µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | cpu: system spent 606ms of the last 60s waiting on cpu (22µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              | io: system spent 0s of the last 60s waiting on io (19.46µs)[✓]
       |          |            |        |      |              |
       |          |            |        |      |              |
  pg   | critical | 55ea5c1a   | ams    | HTTP | 9m4s ago     | HTTP GET http://172.19.14.218:5500/flycheck/pg: 500 Internal Server Error Output: failed to connect to proxy: context deadline exceeded[✓]
       |          |            |        |      |              |
       |          |            |        |      |              |
  role | critical | 55ea5c1a   | ams    | HTTP | 9m9s ago     | failed to connect to local node: context deadline exceeded[✓]
       |          |            |        |      |              |
       |          |            |        |      |              |