124 lines
6.1 KiB
XML
124 lines
6.1 KiB
XML
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<?xml version="1.0"?>
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<clickhouse>
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<!-- See also the files in users.d directory where the settings can be overridden. -->
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<!-- Profiles of settings. -->
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<profiles>
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<!-- Default settings. -->
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<default>
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<!-- Maximum memory usage for processing single query, in bytes. -->
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<max_memory_usage>10000000000</max_memory_usage>
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<!-- How to choose between replicas during distributed query processing.
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random - choose random replica from set of replicas with minimum number of errors
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nearest_hostname - from set of replicas with minimum number of errors, choose replica
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with minimum number of different symbols between replica's hostname and local hostname
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(Hamming distance).
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in_order - first live replica is chosen in specified order.
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first_or_random - if first replica one has higher number of errors, pick a random one from replicas with minimum number of errors.
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-->
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<load_balancing>random</load_balancing>
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</default>
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<!-- Profile that allows only read queries. -->
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<readonly>
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<readonly>1</readonly>
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</readonly>
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</profiles>
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<!-- Users and ACL. -->
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<users>
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<!-- If user name was not specified, 'default' user is used. -->
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<default>
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<!-- See also the files in users.d directory where the password can be overridden.
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Password could be specified in plaintext or in SHA256 (in hex format).
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If you want to specify password in plaintext (not recommended), place it in 'password' element.
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Example: <password>qwerty</password>.
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Password could be empty.
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If you want to specify SHA256, place it in 'password_sha256_hex' element.
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Example: <password_sha256_hex>65e84be33532fb784c48129675f9eff3a682b27168c0ea744b2cf58ee02337c5</password_sha256_hex>
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Restrictions of SHA256: impossibility to connect to ClickHouse using MySQL JS client (as of July 2019).
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If you want to specify double SHA1, place it in 'password_double_sha1_hex' element.
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Example: <password_double_sha1_hex>e395796d6546b1b65db9d665cd43f0e858dd4303</password_double_sha1_hex>
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If you want to specify a previously defined LDAP server (see 'ldap_servers' in the main config) for authentication,
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place its name in 'server' element inside 'ldap' element.
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Example: <ldap><server>my_ldap_server</server></ldap>
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If you want to authenticate the user via Kerberos (assuming Kerberos is enabled, see 'kerberos' in the main config),
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place 'kerberos' element instead of 'password' (and similar) elements.
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The name part of the canonical principal name of the initiator must match the user name for authentication to succeed.
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You can also place 'realm' element inside 'kerberos' element to further restrict authentication to only those requests
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whose initiator's realm matches it.
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Example: <kerberos />
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Example: <kerberos><realm>EXAMPLE.COM</realm></kerberos>
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How to generate decent password:
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Execute: PASSWORD=$(base64 < /dev/urandom | head -c8); echo "$PASSWORD"; echo -n "$PASSWORD" | sha256sum | tr -d '-'
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In first line will be password and in second - corresponding SHA256.
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How to generate double SHA1:
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Execute: PASSWORD=$(base64 < /dev/urandom | head -c8); echo "$PASSWORD"; echo -n "$PASSWORD" | sha1sum | tr -d '-' | xxd -r -p | sha1sum | tr -d '-'
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In first line will be password and in second - corresponding double SHA1.
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-->
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<password></password>
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<!-- List of networks with open access.
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To open access from everywhere, specify:
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<ip>::/0</ip>
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To open access only from localhost, specify:
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<ip>::1</ip>
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<ip>127.0.0.1</ip>
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Each element of list has one of the following forms:
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<ip> IP-address or network mask. Examples: 213.180.204.3 or 10.0.0.1/8 or 10.0.0.1/255.255.255.0
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2a02:6b8::3 or 2a02:6b8::3/64 or 2a02:6b8::3/ffff:ffff:ffff:ffff::.
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<host> Hostname. Example: server01.clickhouse.com.
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To check access, DNS query is performed, and all received addresses compared to peer address.
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<host_regexp> Regular expression for host names. Example, ^server\d\d-\d\d-\d\.clickhouse\.com$
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To check access, DNS PTR query is performed for peer address and then regexp is applied.
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Then, for result of PTR query, another DNS query is performed and all received addresses compared to peer address.
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Strongly recommended that regexp is ends with $
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All results of DNS requests are cached till server restart.
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-->
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<networks>
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<ip>::/0</ip>
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</networks>
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<!-- Settings profile for user. -->
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<profile>default</profile>
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<!-- Quota for user. -->
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<quota>default</quota>
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<!-- User can create other users and grant rights to them. -->
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<!-- <access_management>1</access_management> -->
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</default>
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</users>
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<!-- Quotas. -->
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<quotas>
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<!-- Name of quota. -->
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<default>
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<!-- Limits for time interval. You could specify many intervals with different limits. -->
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<interval>
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<!-- Length of interval. -->
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<duration>3600</duration>
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<!-- No limits. Just calculate resource usage for time interval. -->
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<queries>0</queries>
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<errors>0</errors>
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<result_rows>0</result_rows>
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<read_rows>0</read_rows>
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<execution_time>0</execution_time>
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</interval>
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</default>
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</quotas>
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</clickhouse>
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