postgres@loglab:/etc/postgresql/14/main$ psql
psql (15.2 (Ubuntu 15.2-1.pgdg20.04+1), server 14.7 (Ubuntu 14.7-1.pgdg20.04+1))
Type "help" for help.

postgres=# CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
NOTICE:  extension "timescaledb" already exists, skipping
CREATE EXTENSION
postgres=# SELECT extname FROM pg_extension WHERE extname = 'timescaledb';
   extname
-------------
 timescaledb
(1 row)

postgres=# SELECT create_hypertable('logs', 'timestamp');
ERROR:  cannot create a unique index without the column "timestamp" (used in partitioning)
postgres=# SELECT
postgres-#     i.relname AS index_name,
postgres-#     a.attname AS column_name
postgres-# FROM
postgres-#     pg_class t,
postgres-#     pg_class i,
postgres-#     pg_index ix,
postgres-#     pg_attribute a
postgres-# WHERE
postgres-#     t.oid = ix.indrelid
postgres-#     AND i.oid = ix.indexrelid
postgres-#     AND a.attrelid = t.oid
postgres-#     AND a.attnum = ANY(ix.indkey)
postgres-#     AND t.relkind = 'r'
postgres-#     AND t.relname = 'logs'
postgres-#     AND ix.indisunique IS TRUE;
 index_name | column_name
------------+-------------
 logs_pkey  | id
(1 row)

postgres=# ALTER TABLE logs DROP CONSTRAINT logs_pkey;
ALTER TABLE
postgres=# CREATE UNIQUE INDEX logs_unique_id_timestamp ON logs (id, timestamp);
CREATE INDEX
postgres=# SELECT create_hypertable('logs', 'timestamp');
 create_hypertable
-------------------
 (3,public,logs,t)
(1 row)

postgres=# SELECT extname FROM pg_extension WHERE extname = 'timescaledb';
   extname
-------------
 timescaledb
(1 row)

postgres=# \q