fixes#8277https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=45188c2ea
PostgreSQL 18 + newer OpenSSL builds surface `ssl_ciphers` as a **rule
string** (e.g., `HIGH:MEDIUM:+3DES:!aNULL`) instead of an expanded
cipher list. Our tests hard-pinned the literal list and started failing
on PG18. Also, with TLS 1.3 in the picture, we need to assert that
cipher configuration is sane without coupling to OpenSSL’s expansion.
**What changed**
* **sql/ssl_by_default.sql**
* Replace brittle `SHOW ssl_ciphers` string matching with invariant
checks:
* non-empty ciphers: `current_setting('ssl_ciphers') <> ''`
* looks like a rule/list: `position(':' in
current_setting('ssl_ciphers')) > 0`
* Run the same checks on **workers** via `run_command_on_workers`.
* Keep existing validations for `ssl=on`, `sslmode=require` in
`citus.node_conninfo`, and `pg_stat_ssl.ssl = true`.
* **expected/ssl_by_default.out**
* Update expected output to booleans for the new checks (less diff-prone
across PG/SSL variants).
Mehmet YILMAZ
Philip Dubé
Nils Dijk