upstream:
  default:
    - 127.0.0.1:53
    # example for DNS-over-TLS server (DoT)
##    - tcp-tls:fdns1.dismail.de:853
    # example for DNS-over-HTTPS (DoH)
##    - https://dns.digitale-gesellschaft.ch/dns-query
  # optional: use client name (with wildcard support: * - sequence of any characters, [0-9] - range)
  # or single ip address / client subnet as CIDR notation
##  laptop*:
##    - 123.123.123.123

# optional: timeout to query the upstream resolver. Default: 2s
upstreamTimeout: 2s

# optional: If true, blocky will fail to start unless at least one upstream server per group is reachable. Default: false
startVerifyUpstream: false

# optional: Determines how blocky will create outgoing connections. This impacts both upstreams, and lists.
# accepted: dual, v4, v6
# default: dual
connectIPVersion: dual

# optional: custom IP address(es) for domain name (with all sub-domains). Multiple addresses must be separated by a comma
# example: query "printer.lan" or "my.printer.lan" will return 192.168.178.3
##customDNS:
##  customTTL: 1h
  # optional: if true (default), return empty result for unmapped query types (for example TXT, MX or AAAA if only IPv4 address is defined).
  # if false, queries with unmapped types will be forwarded to the upstream resolver
##  filterUnmappedTypes: true
  # optional: replace domain in the query with other domain before resolver lookup in the mapping
##  rewrite:
##    example.com: printer.lan
##  mapping:
##    printer.lan: 192.168.178.3,2001:0db8:85a3:08d3:1319:8a2e:0370:7344

# optional: definition, which DNS resolver(s) should be used for queries to the domain (with all sub-domains). Multiple resolvers must be separated by a comma
# Example: Query client.fritz.box will ask DNS server 192.168.178.1. This is necessary for local network, to resolve clients by host name
##conditional:
  # optional: if false (default), return empty result if after rewrite, the mapped resolver returned an empty answer. If true, the original query will be sent to the upstream resolver
  # Example: The query "blog.example.com" will be rewritten to "blog.fritz.box" and also redirected to the resolver at 192.168.178.1. If not found and if `fallbackUpstream` was set to `true`, the original query "blog.example.com" will be sent upstream.
  # Usage: One usecase when having split DNS for internal and external (internet facing) users, but not all subdomains are listed in the internal domain.
##  fallbackUpstream: false
  # optional: replace domain in the query with other domain before resolver lookup in the mapping
##  rewrite:
##    example.com: fritz.box
##  mapping:
##    fritz.box: 192.168.178.1
##    lan.net: 192.168.178.1,192.168.178.2

# optional: use black and white lists to block queries (for example ads, trackers, adult pages etc.)
blocking:
  # definition of blacklist groups. Can be external link (http/https) or local file
  blackLists:
    ads:
      - https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
      - https://adguardteam.github.io/AdGuardSDNSFilter/Filters/filter.txt
  clientGroupsBlock:
    # default will be used, if no special definition for a client name exists
    default:
      - ads
  blockType: nxDomain
  # optional: TTL for answers to blocked domains
  # default: 6h
  blockTTL: 2h
  # optional: automatically list refresh period (in duration format). Default: 4h.
  # Negative value -> deactivate automatically refresh.
  # 0 value -> use default
  refreshPeriod: 12h
  # optional: timeout for list download (each url). Default: 60s. Use large values for big lists or slow internet connections
  downloadTimeout: 4m
  # optional: Download attempt timeout. Default: 60s
  downloadAttempts: 5
  # optional: Time between the download attempts. Default: 1s
  downloadCooldown: 10s
  # optional: if failOnError, application startup will fail if at least one list can't be downloaded / opened. Default: blocking
  startStrategy: failOnError

# optional: configuration for caching of DNS responses
caching:
  # duration how long a response must be cached (min value).
  # If <=0, use response's TTL, if >0 use this value, if TTL is smaller
  # Default: 0
  minTime: -1
  # duration how long a response must be cached (max value).
  # If <0, do not cache responses
  # If 0, use TTL
  # If > 0, use this value, if TTL is greater
  # Default: 0
  maxTime: 0
  # Max number of cache entries (responses) to be kept in cache (soft limit). Useful on systems with limited amount of RAM.
  # Default (0): unlimited
  maxItemsCount: 0
  # if true, will preload DNS results for often used queries (default: names queried more than 5 times in a 2-hour time window)
  # this improves the response time for often used queries, but significantly increases external traffic
  # default: false
  prefetching: true
  # prefetch track time window (in duration format)
  # default: 120
  prefetchExpires: 24h
  # name queries threshold for prefetch
  # default: 5
  prefetchThreshold: 2
  # Max number of domains to be kept in cache for prefetching (soft limit). Useful on systems with limited amount of RAM.
  # Default (0): unlimited
  prefetchMaxItemsCount: 0
  # Time how long negative results (NXDOMAIN response or empty result) are cached. A value of -1 will disable caching for negative results.
  # Default: 30m
  cacheTimeNegative: 30m

# optional: configuration of client name resolution
##clientLookup:
  # optional: this DNS resolver will be used to perform reverse DNS lookup (typically local router)
##  upstream: 192.168.178.1
  # optional: some routers return multiple names for client (host name and user defined name). Define which single name should be used.
  # Example: take second name if present, if not take first name
##  singleNameOrder:
##    - 2
##    - 1
  # optional: custom mapping of client name to IP addresses. Useful if reverse DNS does not work properly or just to have custom client names.
##  clients:
##    laptop:
##     - 192.168.178.29
# optional: configuration for prometheus metrics endpoint
prometheus:
  # enabled if true
  enable: true
  # url path, optional (default '/metrics')
  path: /metrics

# optional: write query information (question, answer, client, duration etc.) to daily csv file
##queryLog:
  # optional one of: mysql, postgresql, csv, csv-client. If empty, log to console
##  type: mysql
  # directory (should be mounted as volume in docker) for csv, db connection string for mysql/postgresql
##  target: db_user:db_password@tcp(db_host_or_ip:3306)/db_name?charset=utf8mb4&parseTime=True&loc=Local
  #postgresql target: postgres://user:password@db_host_or_ip:5432/db_name
  # if > 0, deletes log files which are older than ... days
##  logRetentionDays: 7
  # optional: Max attempts to create specific query log writer, default: 3
##  creationAttempts: 1
  # optional: Time between the creation attempts, default: 2s
##  creationCooldown: 2s
  # optional: Which fields should be logged. You can choose one or more from: clientIP, clientName, responseReason, responseAnswer, question, duration. If not defined, it logs all fields
##  fields:
##    - clientIP
##    - duration

# optional: Blocky can synchronize its cache and blocking state between multiple instances through redis.
##redis:
  # Server address and port or master name if sentinel is used
##  address: redismaster
  # Username if necessary
##  username: usrname
  # Password if necessary
##  password: passwd
  # Database, default: 0
##  database: 2
  # Connection is required for blocky to start. Default: false
##  required: true
  # Max connection attempts, default: 3
##  connectionAttempts: 10
  # Time between the connection attempts, default: 1s
##  connectionCooldown: 3s
  # Sentinal username if necessary
##  sentinelUsername: usrname
  # Sentinal password if necessary
##  sentinelPassword: passwd
  # List with address and port of sentinel hosts(sentinel is activated if at least one sentinel address is configured)
##  sentinelAddresses:
##    - redis-sentinel1:26379
##    - redis-sentinel2:26379
##    - redis-sentinel3:26379

# optional: Mininal TLS version that the DoH and DoT server will use
minTlsServeVersion: 1.3
# if https port > 0: path to cert and key file for SSL encryption. if not set, self-signed certificate will be generated
#certFile: server.crt
#keyFile: server.key
# optional: use these DNS servers to resolve blacklist urls and upstream DNS servers. It is useful if no system DNS resolver is configured, and/or to encrypt the bootstrap queries.
bootstrapDns:
##  - tcp+udp:1.1.1.1
##  - https://1.1.1.1/dns-query
##  - upstream: https://dns.digitale-gesellschaft.ch/dns-query
##    ips:
##      - 185.95.218.42

# optional: drop all queries with following query types. Default: empty
##filtering:
##  queryTypes:
##    - AAAA

# optional: if path defined, use this file for query resolution (A, AAAA and rDNS). Default: empty
##hostsFile:
  # optional: Path to hosts file (e.g. /etc/hosts on Linux)
##  filePath: /etc/hosts
  # optional: TTL, default: 1h
##  hostsTTL: 60m
  # optional: Time between hosts file refresh, default: 1h
##  refreshPeriod: 30m
  # optional: Whether loopback hosts addresses (127.0.0.0/8 and ::1) should be filtered or not, default: false
##  filterLoopback: true

# optional: ports configuration
##port:
  # optional: DNS listener port(s) and bind ip address(es), default 53 (UDP and TCP). Example: 53, :53, "127.0.0.1:5353,[::1]:5353"
port: 53
  # optional: Port(s) and bind ip address(es) for DoT (DNS-over-TLS) listener. Example: 853, 127.0.0.1:853
##  tls: 853
  # optional: Port(s) and optional bind ip address(es) to serve HTTPS used for prometheus metrics, pprof, REST API, DoH... If you wish to specify a specific IP, you can do so such as 192.168.0.1:443. Example: 443, :443, 127.0.0.1:443,[::1]:443
##  https: 443
##  # optional: Port(s) and optional bind ip address(es) to serve HTTP used for prometheus metrics, pprof, REST API, DoH... If you wish to specify a specific IP, you can do so such as 192.168.0.1:4000. Example: 4000, :4000, 127.0.0.1:4000,[::1]:4000
httpPort: 4000

# optional: logging configuration
##log:
  # optional: Log level (one from debug, info, warn, error). Default: info
##  level: info
  # optional: Log format (text or json). Default: text
##  format: text
  # optional: log timestamps. Default: true
##  timestamp: true
  # optional: obfuscate log output (replace all alphanumeric characters with *) for user sensitive data like request domains or responses to increase privacy. Default: false
##  privacy: false

# optional: add EDE error codes to dns response
ede:
  # enabled if true, Default: false
  enable: true