$ chlift migrate status
mirror chlift_demo: RUNNING, 56000 rows synced by CDC, replication slot holds 0 MB of WAL
  public.user_events     postgres ~8000104  node-a 8053000  node-b 8053000
  public.request_logs    postgres ~4000025  node-a 4001000  node-b 4001000
  public.system_logs     postgres ~1996465  node-a 2002000  node-b 2002000
$ time chlift migrate cutover
cutover: watermark 0/E659C2C0; waiting for PeerDB to confirm it
checksum public.user_events: 64 buckets x 6 columns (count, id, account_id, user_id, event_time, kind), 0 differ
checksum public.request_logs: 64 buckets x 9 columns (count, id, account_id, created_at, method, path, status, duration_ms, user_agent), 0 differ
checksum public.system_logs: 64 buckets x 6 columns (count, id, logged_at, level, service, message), 0 differ
cutover: Postgres and every replica agree (day counts and PK-range checksums)
cutover done: mirror stopped, slot and publication dropped; ClickHouse database chlift keeps the data. Postgres tables are untouched (archive or drop them when you are ready)

real	1m51.951s
user	0m0.257s
sys	0m0.359s
$ psql -c "SELECT count(*) AS replication_slots FROM pg_replication_slots" -c "SELECT count(*) AS publications FROM pg_publication"
 replication_slots 
-------------------
                 1
(1 row)

 publications 
--------------
            1
(1 row)

$ chlift migrate check
ok   public.user_events: postgres 8047000 rows; replicas map[node-a:8047000 node-b:8047000] 
ok   public.request_logs: postgres 4000000 rows; replicas map[node-a:4000000 node-b:4000000] 
ok   public.system_logs: postgres 1998000 rows; replicas map[node-a:1998000 node-b:1998000]