Wal files in /pgsql/14/main/pg_wal not removed

Hi guys, and happy holidays.

My /pgsql/14/main/pg_wal directory is filling up. The server is not respecting the wal_keep_size = 100GB. I have no replication slots in this server, and I have already restarted PostgreSQL.

I don’t know what else to look for. Would appreciate any help.

My postgresql.conf can be found below:

data_directory = '/pgsql/14/main'
hba_file = '/etc/postgresql/14/main/pg_hba.conf'
ident_file = '/etc/postgresql/14/main/pg_ident.conf'
external_pid_file = '/var/run/postgresql/14-main.pid'
unix_socket_directories = '/var/run/postgresql'

# SSL
ssl = on
ssl_cert_file = '/etc/ssl/certs/ssl-cert-snakeoil.pem'
ssl_key_file = '/etc/ssl/private/ssl-cert-snakeoil.key'

listen_addresses = '*'
port = 5432
random_page_cost = 1.1
max_connections = 400
shared_buffers = 3840MB
statement_timeout = 0
work_mem = 209719830kB
maintenance_work_mem = 960MB
shared_preload_libraries = 'pg_stat_statements'
pg_stat_statements.track = all
track_activity_query_size = 102400
synchronous_commit = off
synchronous_standby_names = '*'
wal_buffers = 16MB
wal_level = replica

# PG 14 new parameters
min_wal_size = 1GB
max_wal_size = 4GB
max_worker_processes = 2
max_parallel_workers_per_gather = 1
max_parallel_workers = 2
max_parallel_maintenance_workers = 1

# Replication parameters
max_replication_slots = 15
hot_standby_feedback = on
hot_standby = on
fsync = on
wal_keep_size = 100GB

restore_command = 'cp /data/wal_archive/%f %p'

checkpoint_completion_target = 0.9
archive_mode = on
archive_command = '/pgsql/pg-archive-wal-to-slaves.sh "%p"'
archive_timeout = 300
max_wal_senders = 50
effective_cache_size = 11520MB
logging_collector = on
log_directory = '/data/postgresql/log'
log_filename = 'postgresql.log.%a'
log_rotation_age = 1440
log_rotation_size = 0
log_truncate_on_rotation = on
log_min_duration_statement = 1000
log_line_prefix = '%t [%p]: [%l-1] user=%u,db=%d,app=%a,client=%h '
log_lock_waits = on
log_statement = 'ddl'
log_timezone = 'UTC'
stats_temp_directory = '/var/run/postgresql/main.pg_stat_tmp'
autovacuum = on
log_autovacuum_min_duration = 1000
autovacuum_max_workers = 5
autovacuum_naptime = 40s
autovacuum_vacuum_threshold = 200
autovacuum_analyze_threshold = 150
autovacuum_vacuum_scale_factor = 0.02
autovacuum_analyze_scale_factor = 0.005
datestyle = 'iso, mdy'
timezone = 'UTC'
lc_messages = 'en_US.UTF-8'
lc_monetary = 'en_US.UTF-8'
lc_numeric = 'en_US.UTF-8'
lc_time = 'en_US.UTF-8'
default_text_search_config = 'pg_catalog.english'
deadlock_timeout = 2s
max_files_per_process = 4096
effective_io_concurrency = 200
default_statistics_target = 100

# https://dba.stackexchange.com/a/280727
max_standby_streaming_delay = 30s

Thanks!
Lucas