经过一天的研究，我提出了一个问题。
我无法重命名 Cassandra 节点。我想将一个节点放在 D1，将另一个节点放在 D2，这两个节点都在 rack1 中。
但这是我得到的结果
$ nodetool status
Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID Rack
UN 10.0.0.1 185.58 KiB 256 100.0% 21d6f3db-79d3-4b3b-9fb8-7da42c82610e rack1
UN 10.0.0.2 75.07 KiB 256 100.0% 2bb2e75e-23a6-4dc4-a279-ab28b739255d rack1
两个节点都在“datacenter1”中这是我在第一台设备上的配置：
cassandra.yaml：
cluster_name: 'kban'
num_tokens: 256
hinted_handoff_enabled: true
max_hint_window_in_ms: 10800000
hinted_handoff_throttle_in_kb: 1024
max_hints_delivery_threads: 2
hints_flush_period_in_ms: 10000
max_hints_file_size_in_mb: 128
batchlog_replay_throttle_in_kb: 1024
authenticator: AllowAllAuthenticator
authorizer: AllowAllAuthorizer
role_manager: CassandraRoleManager
roles_validity_in_ms: 2000
permissions_validity_in_ms: 2000
credentials_validity_in_ms: 2000
partitioner: org.apache.cassandra.dht.Murmur3Partitioner
data_file_directories:
- /var/lib/cassandra/data
commitlog_directory: /var/lib/cassandra/commitlog
cdc_enabled: false
disk_failure_policy: stop
commit_failure_policy: stop
prepared_statements_cache_size_mb:
thrift_prepared_statements_cache_size_mb:
key_cache_size_in_mb:
key_cache_save_period: 14400
row_cache_size_in_mb: 0
row_cache_save_period: 0
counter_cache_size_in_mb:
counter_cache_save_period: 7200
saved_caches_directory: /var/lib/cassandra/saved_caches
commitlog_sync: periodic
commitlog_sync_period_in_ms: 10000
commitlog_segment_size_in_mb: 32
seed_provider:
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
parameters:
- seeds: "10.0.0.2"
concurrent_reads: 32
concurrent_writes: 32
concurrent_counter_writes: 32
concurrent_materialized_view_writes: 32
memtable_allocation_type: heap_buffers
index_summary_capacity_in_mb:
index_summary_resize_interval_in_minutes: 60
trickle_fsync: false
trickle_fsync_interval_in_kb: 10240
storage_port: 7000
ssl_storage_port: 7001
listen_address: 10.0.0.1
start_native_transport: true
native_transport_port: 9042
start_rpc: false
rpc_address: 10.0.0.1
rpc_port: 9160
rpc_keepalive: true
rpc_server_type: sync
thrift_framed_transport_size_in_mb: 15
incremental_backups: false
snapshot_before_compaction: false
auto_snapshot: true
column_index_size_in_kb: 64
column_index_cache_size_in_kb: 2
compaction_throughput_mb_per_sec: 16
sstable_preemptive_open_interval_in_mb: 50
read_request_timeout_in_ms: 5000
range_request_timeout_in_ms: 10000
write_request_timeout_in_ms: 2000
counter_write_request_timeout_in_ms: 5000
cas_contention_timeout_in_ms: 1000
truncate_request_timeout_in_ms: 60000
request_timeout_in_ms: 10000
slow_query_log_timeout_in_ms: 500
cross_node_timeout: false
endpoint_snitch: SimpleSnitch
dynamic_snitch_update_interval_in_ms: 100
dynamic_snitch_reset_interval_in_ms: 600000
dynamic_snitch_badness_threshold: 0.1
request_scheduler: org.apache.cassandra.scheduler.NoScheduler
server_encryption_options:
internode_encryption: none
keystore: conf/.keystore
keystore_password: cassandra
truststore: conf/.truststore
truststore_password: cassandra
client_encryption_options:
enabled: false
optional: false
keystore: conf/.keystore
keystore_password: cassandra
internode_compression: dc
inter_dc_tcp_nodelay: false
tracetype_query_ttl: 86400
tracetype_repair_ttl: 604800
enable_user_defined_functions: false
enable_scripted_user_defined_functions: false
windows_timer_interval: 1
transparent_data_encryption_options:
enabled: false
chunk_length_kb: 64
cipher: AES/CBC/PKCS5Padding
key_alias: testing:1
key_provider:
- class_name: org.apache.cassandra.security.JKSKeyProvider
parameters:
- keystore: conf/.keystore
keystore_password: cassandra
store_type: JCEKS
key_password: cassandra
tombstone_warn_threshold: 1000
tombstone_failure_threshold: 100000
batch_size_warn_threshold_in_kb: 5
batch_size_fail_threshold_in_kb: 50
unlogged_batch_across_partitions_warn_threshold: 10
compaction_large_partition_warning_threshold_mb: 100
gc_warn_threshold_in_ms: 1000
back_pressure_enabled: false
back_pressure_strategy:
- class_name: org.apache.cassandra.net.RateBasedBackPressure
parameters:
- high_ratio: 0.90
factor: 5
flow: FAST
enable_materialized_views: true
enable_sasi_indexes: true
cassandra-rackdc.properties：
dc=D1
rack=RACK1
在第二台设备上：
cassandra.yaml：
cluster_name: 'kban'
num_tokens: 256
hinted_handoff_enabled: true
max_hint_window_in_ms: 10800000
hinted_handoff_throttle_in_kb: 1024
max_hints_delivery_threads: 2
hints_flush_period_in_ms: 10000
max_hints_file_size_in_mb: 128
batchlog_replay_throttle_in_kb: 1024
authenticator: AllowAllAuthenticator
authorizer: AllowAllAuthorizer
role_manager: CassandraRoleManager
roles_validity_in_ms: 2000
permissions_validity_in_ms: 2000
credentials_validity_in_ms: 2000
partitioner: org.apache.cassandra.dht.Murmur3Partitioner
data_file_directories:
- /var/lib/cassandra/data
commitlog_directory: /var/lib/cassandra/commitlog
cdc_enabled: false
disk_failure_policy: stop
commit_failure_policy: stop
prepared_statements_cache_size_mb:
thrift_prepared_statements_cache_size_mb:
key_cache_size_in_mb:
key_cache_save_period: 14400
row_cache_size_in_mb: 0
row_cache_save_period: 0
counter_cache_size_in_mb:
counter_cache_save_period: 7200
saved_caches_directory: /var/lib/cassandra/saved_caches
commitlog_sync: periodic
commitlog_sync_period_in_ms: 10000
commitlog_segment_size_in_mb: 32
seed_provider:
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
parameters:
- seeds: "10.0.0.1"
concurrent_reads: 32
concurrent_writes: 32
concurrent_counter_writes: 32
concurrent_materialized_view_writes: 32
memtable_allocation_type: heap_buffers
index_summary_capacity_in_mb:
index_summary_resize_interval_in_minutes: 60
trickle_fsync: false
trickle_fsync_interval_in_kb: 10240
storage_port: 7000
ssl_storage_port: 7001
listen_address: 10.0.0.2
start_native_transport: true
native_transport_port: 9042
start_rpc: false
rpc_address: 10.0.0.2
rpc_port: 9160
rpc_keepalive: true
rpc_server_type: sync
thrift_framed_transport_size_in_mb: 15
incremental_backups: false
snapshot_before_compaction: false
auto_snapshot: true
column_index_size_in_kb: 64
column_index_cache_size_in_kb: 2
compaction_throughput_mb_per_sec: 16
sstable_preemptive_open_interval_in_mb: 50
read_request_timeout_in_ms: 5000
range_request_timeout_in_ms: 10000
write_request_timeout_in_ms: 2000
counter_write_request_timeout_in_ms: 5000
cas_contention_timeout_in_ms: 1000
truncate_request_timeout_in_ms: 60000
request_timeout_in_ms: 10000
slow_query_log_timeout_in_ms: 500
cross_node_timeout: false
endpoint_snitch: SimpleSnitch
dynamic_snitch_update_interval_in_ms: 100
dynamic_snitch_reset_interval_in_ms: 600000
dynamic_snitch_badness_threshold: 0.1
request_scheduler: org.apache.cassandra.scheduler.NoScheduler
server_encryption_options:
internode_encryption: none
keystore: conf/.keystore
keystore_password: cassandra
truststore: conf/.truststore
truststore_password: cassandra
client_encryption_options:
enabled: false
optional: false
keystore: conf/.keystore
keystore_password: cassandra
internode_compression: dc
inter_dc_tcp_nodelay: false
tracetype_query_ttl: 86400
tracetype_repair_ttl: 604800
enable_user_defined_functions: false
enable_scripted_user_defined_functions: false
windows_timer_interval: 1
transparent_data_encryption_options:
enabled: false
chunk_length_kb: 64
cipher: AES/CBC/PKCS5Padding
key_alias: testing:1
key_provider:
- class_name: org.apache.cassandra.security.JKSKeyProvider
parameters:
- keystore: conf/.keystore
keystore_password: cassandra
store_type: JCEKS
key_password: cassandra
tombstone_warn_threshold: 1000
tombstone_failure_threshold: 100000
batch_size_warn_threshold_in_kb: 5
batch_size_fail_threshold_in_kb: 50
unlogged_batch_across_partitions_warn_threshold: 10
compaction_large_partition_warning_threshold_mb: 100
gc_warn_threshold_in_ms: 1000
back_pressure_enabled: false
back_pressure_strategy:
- class_name: org.apache.cassandra.net.RateBasedBackPressure
parameters:
- high_ratio: 0.90
factor: 5
flow: FAST
enable_materialized_views: true
enable_sasi_indexes: true
cassandra-rackdc.properties：
dc=D2
rack=RACK1
答案1
您的问题是您使用SimpleSnitch：endpoint_snitch: SimpleSnitch- 它不允许拥有多个 DC - 所有节点始终位于datacenter1.
要将节点放入不同的 DC，您需要更改要使用的配置GossipingPropertyFileSnitch- 之后它将从中选择 DC 和机架名称cassandra-rackdc.properties。但由于您在初始化 Cassandra 后无法轻松更改 snitch，因此您需要删除 Cassandra 数据目录，然后再次执行初始化。