apollo-backend/config/pgbouncer.ini

;;;
;;; PgBouncer configuration file
;;;

;; database name = connect string
;;
;; connect string params:
;;   dbname= host= port= user= password= auth_user=
;;   client_encoding= datestyle= timezone=
;;   pool_size= reserve_pool= max_db_connections=
;;   pool_mode= connect_query= application_name=
[databases]
apollo = host=localhost dbname=apollo user=apollo
;; foodb over Unix socket
;foodb =

;; redirect bardb to bazdb on localhost
;bardb = host=localhost dbname=bazdb

;; access to dest database will go with single user
;forcedb = host=localhost port=300 user=baz password=foo client_encoding=UNICODE datestyle=ISO connect_query='SELECT 1'

;; use custom pool sizes
;nondefaultdb = pool_size=50 reserve_pool=10

;; use auth_user with auth_query if user not present in auth_file
;; auth_user must exist in auth_file
; foodb = auth_user=bar

;; fallback connect string
;* = host=testserver

;; User-specific configuration
[users]
;user1 = pool_mode=transaction max_user_connections=10

;; Configuration section
[pgbouncer]

;;;
;;; Administrative settings
;;;

logfile = /usr/local/var/log/pgbouncer.log
pidfile = /usr/local/var/run/pgbouncer.pid

;;;
;;; Where to wait for clients
;;;

;; IP address or * which means all IPs
listen_addr = localhost
listen_port = 6432

;; Unix socket is also used for -R.
;; On Debian it should be /var/run/postgresql
;unix_socket_dir = /tmp
;unix_socket_mode = 0777
;unix_socket_group =

;;;
;;; TLS settings for accepting clients
;;;

;; disable, allow, require, verify-ca, verify-full
;client_tls_sslmode = disable

;; Path to file that contains trusted CA certs
;client_tls_ca_file = <system default>

;; Private key and cert to present to clients.
;; Required for accepting TLS connections from clients.
;client_tls_key_file =
;client_tls_cert_file =

;; fast, normal, secure, legacy, <ciphersuite string>
;client_tls_ciphers = fast

;; all, secure, tlsv1.0, tlsv1.1, tlsv1.2, tlsv1.3
;client_tls_protocols = secure

;; none, auto, legacy
;client_tls_dheparams = auto

;; none, auto, <curve name>
;client_tls_ecdhcurve = auto

;;;
;;; TLS settings for connecting to backend databases
;;;

;; disable, allow, require, verify-ca, verify-full
;server_tls_sslmode = disable

;; Path to that contains trusted CA certs
;server_tls_ca_file = <system default>

;; Private key and cert to present to backend.
;; Needed only if backend server require client cert.
;server_tls_key_file =
;server_tls_cert_file =

;; all, secure, tlsv1.0, tlsv1.1, tlsv1.2, tlsv1.3
;server_tls_protocols = secure

;; fast, normal, secure, legacy, <ciphersuite string>
;server_tls_ciphers = fast

;;;
;;; Authentication settings
;;;

;; any, trust, plain, md5, cert, hba, pam
auth_type = any
;auth_file = /usr/local/etc/userlist.txt

;; Path to HBA-style auth config
;auth_hba_file =

;; Query to use to fetch password from database.  Result
;; must have 2 columns - username and password hash.
;auth_query = SELECT usename, passwd FROM pg_shadow WHERE usename=$1

;;;
;;; Users allowed into database 'pgbouncer'
;;;

;; comma-separated list of users who are allowed to change settings
;admin_users = user2, someadmin, otheradmin

;; comma-separated list of users who are just allowed to use SHOW command
;stats_users = stats, root

;;;
;;; Pooler personality questions
;;;

;; When server connection is released back to pool:
;;   session      - after client disconnects (default)
;;   transaction  - after transaction finishes
;;   statement    - after statement finishes
;pool_mode = session

;; Query for cleaning connection immediately after releasing from
;; client.  No need to put ROLLBACK here, pgbouncer does not reuse
;; connections where transaction is left open.
;server_reset_query = DISCARD ALL

;; Whether server_reset_query should run in all pooling modes.  If it
;; is off, server_reset_query is used only for session-pooling.
;server_reset_query_always = 0

;; Comma-separated list of parameters to ignore when given in startup
;; packet.  Newer JDBC versions require the extra_float_digits here.
;ignore_startup_parameters = extra_float_digits

;; When taking idle server into use, this query is run first.
;server_check_query = select 1

;; If server was used more recently that this many seconds ago,
; skip the check query.  Value 0 may or may not run in immediately.
;server_check_delay = 30

;; Close servers in session pooling mode after a RECONNECT, RELOAD,
;; etc. when they are idle instead of at the end of the session.
;server_fast_close = 0

;; Use <appname - host> as application_name on server.
;application_name_add_host = 0

;; Period for updating aggregated stats.
;stats_period = 60

;;;
;;; Connection limits
;;;

;; Total number of clients that can connect
;max_client_conn = 100

;; Default pool size.  20 is good number when transaction pooling
;; is in use, in session pooling it needs to be the number of
;; max clients you want to handle at any moment
;default_pool_size = 20

;; Minimum number of server connections to keep in pool.
;min_pool_size = 0

; how many additional connection to allow in case of trouble
;reserve_pool_size = 0

;; If a clients needs to wait more than this many seconds, use reserve
;; pool.
;reserve_pool_timeout = 5

;; Maximum number of server connections for a database
;max_db_connections = 0

;; Maximum number of server connections for a user
;max_user_connections = 0

;; If off, then server connections are reused in LIFO manner
;server_round_robin = 0

;;;
;;; Logging
;;;

;; Syslog settings
;syslog = 0
;syslog_facility = daemon
;syslog_ident = pgbouncer

;; log if client connects or server connection is made
;log_connections = 1

;; log if and why connection was closed
;log_disconnections = 1

;; log error messages pooler sends to clients
;log_pooler_errors = 1

;; write aggregated stats into log
;log_stats = 1

;; Logging verbosity.  Same as -v switch on command line.
;verbose = 0

;;;
;;; Timeouts
;;;

;; Close server connection if its been connected longer.
;server_lifetime = 3600

;; Close server connection if its not been used in this time.  Allows
;; to clean unnecessary connections from pool after peak.
;server_idle_timeout = 600

;; Cancel connection attempt if server does not answer takes longer.
;server_connect_timeout = 15

;; If server login failed (server_connect_timeout or auth failure)
;; then wait this many second.
;server_login_retry = 15

;; Dangerous.  Server connection is closed if query does not return in
;; this time.  Should be used to survive network problems, _not_ as
;; statement_timeout. (default: 0)
;query_timeout = 0

;; Dangerous.  Client connection is closed if the query is not
;; assigned to a server in this time.  Should be used to limit the
;; number of queued queries in case of a database or network
;; failure. (default: 120)
;query_wait_timeout = 120

;; Dangerous.  Client connection is closed if no activity in this
;; time.  Should be used to survive network problems. (default: 0)
;client_idle_timeout = 0

;; Disconnect clients who have not managed to log in after connecting
;; in this many seconds.
;client_login_timeout = 60

;; Clean automatically created database entries (via "*") if they stay
;; unused in this many seconds.
; autodb_idle_timeout = 3600

;; Close connections which are in "IDLE in transaction" state longer
;; than this many seconds.
;idle_transaction_timeout = 0

;; How long SUSPEND/-R waits for buffer flush before closing
;; connection.
;suspend_timeout = 10

;;;
;;; Low-level tuning options
;;;

;; buffer for streaming packets
;pkt_buf = 4096

;; man 2 listen
;listen_backlog = 128

;; Max number pkt_buf to process in one event loop.
;sbuf_loopcnt = 5

;; Maximum PostgreSQL protocol packet size.
;max_packet_size = 2147483647

;; Set SO_REUSEPORT socket option
;so_reuseport = 0

;; networking options, for info: man 7 tcp

;; Linux: Notify program about new connection only if there is also
;; data received.  (Seconds to wait.)  On Linux the default is 45, on
;; other OS'es 0.
;tcp_defer_accept = 0

;; In-kernel buffer size (Linux default: 4096)
;tcp_socket_buffer = 0

;; whether tcp keepalive should be turned on (0/1)
;tcp_keepalive = 1

;; The following options are Linux-specific.  They also require
;; tcp_keepalive=1.

;; Count of keepalive packets
;tcp_keepcnt = 0

;; How long the connection can be idle before sending keepalive
;; packets
;tcp_keepidle = 0

;; The time between individual keepalive probes
;tcp_keepintvl = 0

;; How long may transmitted data remain unacknowledged before TCP
;; connection is closed (in milliseconds)
;tcp_user_timeout = 0

;; DNS lookup caching time
;dns_max_ttl = 15

;; DNS zone SOA lookup period
;dns_zone_check_period = 0

;; DNS negative result caching time
;dns_nxdomain_ttl = 15

;; Custom resolv.conf file, to set custom DNS servers or other options
;; (default: empty = use OS settings)
;resolv_conf = /etc/pgbouncer/resolv.conf

;;;
;;; Random stuff
;;;

;; Hackish security feature.  Helps against SQL injection: when PQexec
;; is disabled, multi-statement cannot be made.
;disable_pqexec = 0

;; Config file to use for next RELOAD/SIGHUP
;; By default contains config file from command line.
;conffile

;; Windows service name to register as.  job_name is alias for
;; service_name, used by some Skytools scripts.
;service_name = pgbouncer
;job_name = pgbouncer

;; Read additional config from other file
;%include /etc/pgbouncer/pgbouncer-other.ini