449 lines
14 KiB
Nix
449 lines
14 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.services.cassandra;
|
|
cassandraPackage = cfg.package.override {
|
|
jre = cfg.jre;
|
|
};
|
|
cassandraUser = {
|
|
name = cfg.user;
|
|
home = "/var/lib/cassandra";
|
|
description = "Cassandra role user";
|
|
};
|
|
|
|
cassandraRackDcProperties = ''
|
|
dc=${cfg.dc}
|
|
rack=${cfg.rack}
|
|
'';
|
|
|
|
cassandraConf = ''
|
|
cluster_name: ${cfg.clusterName}
|
|
num_tokens: 256
|
|
auto_bootstrap: ${boolToString cfg.autoBootstrap}
|
|
hinted_handoff_enabled: ${boolToString cfg.hintedHandOff}
|
|
hinted_handoff_throttle_in_kb: ${builtins.toString cfg.hintedHandOffThrottle}
|
|
max_hints_delivery_threads: 2
|
|
max_hint_window_in_ms: 10800000 # 3 hours
|
|
authenticator: ${cfg.authenticator}
|
|
authorizer: ${cfg.authorizer}
|
|
permissions_validity_in_ms: 2000
|
|
partitioner: org.apache.cassandra.dht.Murmur3Partitioner
|
|
data_file_directories:
|
|
${builtins.concatStringsSep "\n" (map (v: " - "+v) cfg.dataDirs)}
|
|
commitlog_directory: ${cfg.commitLogDirectory}
|
|
disk_failure_policy: stop
|
|
key_cache_size_in_mb:
|
|
key_cache_save_period: 14400
|
|
row_cache_size_in_mb: 0
|
|
row_cache_save_period: 0
|
|
saved_caches_directory: ${cfg.savedCachesDirectory}
|
|
commitlog_sync: ${cfg.commitLogSync}
|
|
commitlog_sync_period_in_ms: ${builtins.toString cfg.commitLogSyncPeriod}
|
|
commitlog_segment_size_in_mb: 32
|
|
seed_provider:
|
|
- class_name: org.apache.cassandra.locator.SimpleSeedProvider
|
|
parameters:
|
|
- seeds: "${builtins.concatStringsSep "," cfg.seeds}"
|
|
concurrent_reads: ${builtins.toString cfg.concurrentReads}
|
|
concurrent_writes: ${builtins.toString cfg.concurrentWrites}
|
|
memtable_flush_queue_size: 4
|
|
trickle_fsync: false
|
|
trickle_fsync_interval_in_kb: 10240
|
|
storage_port: 7000
|
|
ssl_storage_port: 7001
|
|
listen_address: ${cfg.listenAddress}
|
|
start_native_transport: true
|
|
native_transport_port: 9042
|
|
start_rpc: true
|
|
rpc_address: ${cfg.rpcAddress}
|
|
rpc_port: 9160
|
|
rpc_keepalive: true
|
|
rpc_server_type: sync
|
|
thrift_framed_transport_size_in_mb: 15
|
|
incremental_backups: ${boolToString cfg.incrementalBackups}
|
|
snapshot_before_compaction: false
|
|
auto_snapshot: true
|
|
column_index_size_in_kb: 64
|
|
in_memory_compaction_limit_in_mb: 64
|
|
multithreaded_compaction: false
|
|
compaction_throughput_mb_per_sec: 16
|
|
compaction_preheat_key_cache: true
|
|
read_request_timeout_in_ms: 10000
|
|
range_request_timeout_in_ms: 10000
|
|
write_request_timeout_in_ms: 10000
|
|
cas_contention_timeout_in_ms: 1000
|
|
truncate_request_timeout_in_ms: 60000
|
|
request_timeout_in_ms: 10000
|
|
cross_node_timeout: false
|
|
endpoint_snitch: ${cfg.snitch}
|
|
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: ${cfg.internodeEncryption}
|
|
keystore: ${cfg.keyStorePath}
|
|
keystore_password: ${cfg.keyStorePassword}
|
|
truststore: ${cfg.trustStorePath}
|
|
truststore_password: ${cfg.trustStorePassword}
|
|
client_encryption_options:
|
|
enabled: ${boolToString cfg.clientEncryption}
|
|
keystore: ${cfg.keyStorePath}
|
|
keystore_password: ${cfg.keyStorePassword}
|
|
internode_compression: all
|
|
inter_dc_tcp_nodelay: false
|
|
preheat_kernel_page_cache: false
|
|
streaming_socket_timeout_in_ms: ${toString cfg.streamingSocketTimoutInMS}
|
|
'';
|
|
|
|
cassandraLog = ''
|
|
log4j.rootLogger=${cfg.logLevel},stdout
|
|
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
|
|
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
|
|
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] %d{HH:mm:ss,SSS} %m%n
|
|
'';
|
|
|
|
cassandraConfFile = pkgs.writeText "cassandra.yaml" cassandraConf;
|
|
cassandraLogFile = pkgs.writeText "log4j-server.properties" cassandraLog;
|
|
cassandraRackFile = pkgs.writeText "cassandra-rackdc.properties" cassandraRackDcProperties;
|
|
|
|
cassandraEnvironment = {
|
|
CASSANDRA_HOME = cassandraPackage;
|
|
JAVA_HOME = cfg.jre;
|
|
CASSANDRA_CONF = "/etc/cassandra";
|
|
};
|
|
|
|
in {
|
|
|
|
###### interface
|
|
|
|
options.services.cassandra = {
|
|
enable = mkOption {
|
|
description = "Whether to enable cassandra.";
|
|
default = false;
|
|
type = types.bool;
|
|
};
|
|
package = mkOption {
|
|
description = "Cassandra package to use.";
|
|
default = pkgs.cassandra;
|
|
defaultText = "pkgs.cassandra";
|
|
type = types.package;
|
|
};
|
|
jre = mkOption {
|
|
description = "JRE package to run cassandra service.";
|
|
default = pkgs.jre;
|
|
defaultText = "pkgs.jre";
|
|
type = types.package;
|
|
};
|
|
user = mkOption {
|
|
description = "User that runs cassandra service.";
|
|
default = "cassandra";
|
|
type = types.string;
|
|
};
|
|
group = mkOption {
|
|
description = "Group that runs cassandra service.";
|
|
default = "cassandra";
|
|
type = types.string;
|
|
};
|
|
envFile = mkOption {
|
|
description = "path to cassandra-env.sh";
|
|
default = "${cassandraPackage}/conf/cassandra-env.sh";
|
|
defaultText = "\${cassandraPackage}/conf/cassandra-env.sh";
|
|
type = types.path;
|
|
};
|
|
clusterName = mkOption {
|
|
description = "set cluster name";
|
|
default = "cassandra";
|
|
example = "prod-cluster0";
|
|
type = types.string;
|
|
};
|
|
commitLogDirectory = mkOption {
|
|
description = "directory for commit logs";
|
|
default = "/var/lib/cassandra/commit_log";
|
|
type = types.string;
|
|
};
|
|
savedCachesDirectory = mkOption {
|
|
description = "directory for saved caches";
|
|
default = "/var/lib/cassandra/saved_caches";
|
|
type = types.string;
|
|
};
|
|
hintedHandOff = mkOption {
|
|
description = "enable hinted handoff";
|
|
default = true;
|
|
type = types.bool;
|
|
};
|
|
hintedHandOffThrottle = mkOption {
|
|
description = "hinted hand off throttle rate in kb";
|
|
default = 1024;
|
|
type = types.int;
|
|
};
|
|
commitLogSync = mkOption {
|
|
description = "commitlog sync method";
|
|
default = "periodic";
|
|
type = types.str;
|
|
example = "batch";
|
|
};
|
|
commitLogSyncPeriod = mkOption {
|
|
description = "commitlog sync period in ms ";
|
|
default = 10000;
|
|
type = types.int;
|
|
};
|
|
envScript = mkOption {
|
|
default = "${cassandraPackage}/conf/cassandra-env.sh";
|
|
defaultText = "\${cassandraPackage}/conf/cassandra-env.sh";
|
|
type = types.path;
|
|
description = "Supply your own cassandra-env.sh rather than using the default";
|
|
};
|
|
extraParams = mkOption {
|
|
description = "add additional lines to cassandra-env.sh";
|
|
default = [];
|
|
example = [''JVM_OPTS="$JVM_OPTS -Dcassandra.available_processors=1"''];
|
|
type = types.listOf types.str;
|
|
};
|
|
dataDirs = mkOption {
|
|
type = types.listOf types.path;
|
|
default = [ "/var/lib/cassandra/data" ];
|
|
description = "Data directories for cassandra";
|
|
};
|
|
logLevel = mkOption {
|
|
type = types.str;
|
|
default = "INFO";
|
|
description = "default logging level for log4j";
|
|
};
|
|
internodeEncryption = mkOption {
|
|
description = "enable internode encryption";
|
|
default = "none";
|
|
example = "all";
|
|
type = types.str;
|
|
};
|
|
clientEncryption = mkOption {
|
|
description = "enable client encryption";
|
|
default = false;
|
|
type = types.bool;
|
|
};
|
|
trustStorePath = mkOption {
|
|
description = "path to truststore";
|
|
default = ".conf/truststore";
|
|
type = types.str;
|
|
};
|
|
keyStorePath = mkOption {
|
|
description = "path to keystore";
|
|
default = ".conf/keystore";
|
|
type = types.str;
|
|
};
|
|
keyStorePassword = mkOption {
|
|
description = "password to keystore";
|
|
default = "cassandra";
|
|
type = types.str;
|
|
};
|
|
trustStorePassword = mkOption {
|
|
description = "password to truststore";
|
|
default = "cassandra";
|
|
type = types.str;
|
|
};
|
|
seeds = mkOption {
|
|
description = "password to truststore";
|
|
default = [ "127.0.0.1" ];
|
|
type = types.listOf types.str;
|
|
};
|
|
concurrentWrites = mkOption {
|
|
description = "number of concurrent writes allowed";
|
|
default = 32;
|
|
type = types.int;
|
|
};
|
|
concurrentReads = mkOption {
|
|
description = "number of concurrent reads allowed";
|
|
default = 32;
|
|
type = types.int;
|
|
};
|
|
listenAddress = mkOption {
|
|
description = "listen address";
|
|
default = "localhost";
|
|
type = types.str;
|
|
};
|
|
rpcAddress = mkOption {
|
|
description = "rpc listener address";
|
|
default = "localhost";
|
|
type = types.str;
|
|
};
|
|
incrementalBackups = mkOption {
|
|
description = "enable incremental backups";
|
|
default = false;
|
|
type = types.bool;
|
|
};
|
|
snitch = mkOption {
|
|
description = "snitch to use for topology discovery";
|
|
default = "GossipingPropertyFileSnitch";
|
|
example = "Ec2Snitch";
|
|
type = types.str;
|
|
};
|
|
dc = mkOption {
|
|
description = "datacenter for use in topology configuration";
|
|
default = "DC1";
|
|
example = "DC1";
|
|
type = types.str;
|
|
};
|
|
rack = mkOption {
|
|
description = "rack for use in topology configuration";
|
|
default = "RAC1";
|
|
example = "RAC1";
|
|
type = types.str;
|
|
};
|
|
authorizer = mkOption {
|
|
description = "
|
|
Authorization backend, implementing IAuthorizer; used to limit access/provide permissions
|
|
";
|
|
default = "AllowAllAuthorizer";
|
|
example = "CassandraAuthorizer";
|
|
type = types.str;
|
|
};
|
|
authenticator = mkOption {
|
|
description = "
|
|
Authentication backend, implementing IAuthenticator; used to identify users
|
|
";
|
|
default = "AllowAllAuthenticator";
|
|
example = "PasswordAuthenticator";
|
|
type = types.str;
|
|
};
|
|
autoBootstrap = mkOption {
|
|
description = "It makes new (non-seed) nodes automatically migrate the right data to themselves.";
|
|
default = true;
|
|
type = types.bool;
|
|
};
|
|
streamingSocketTimoutInMS = mkOption {
|
|
description = "Enable or disable socket timeout for streaming operations";
|
|
default = 3600000; #CASSANDRA-8611
|
|
example = 120;
|
|
type = types.int;
|
|
};
|
|
repairStartAt = mkOption {
|
|
default = "Sun";
|
|
type = types.string;
|
|
description = ''
|
|
Defines realtime (i.e. wallclock) timers with calendar event
|
|
expressions. For more details re: systemd OnCalendar at
|
|
https://www.freedesktop.org/software/systemd/man/systemd.time.html#Displaying%20Time%20Spans
|
|
'';
|
|
example = ["weekly" "daily" "08:05:40" "mon,fri *-1/2-1,3 *:30:45"];
|
|
};
|
|
repairRandomizedDelayInSec = mkOption {
|
|
default = 0;
|
|
type = types.int;
|
|
description = ''Delay the timer by a randomly selected, evenly distributed
|
|
amount of time between 0 and the specified time value. re: systemd timer
|
|
RandomizedDelaySec for more details
|
|
'';
|
|
};
|
|
repairPostStop = mkOption {
|
|
default = null;
|
|
type = types.nullOr types.string;
|
|
description = ''
|
|
Run a script when repair is over. One can use it to send statsd events, email, etc.
|
|
'';
|
|
};
|
|
repairPostStart = mkOption {
|
|
default = null;
|
|
type = types.nullOr types.string;
|
|
description = ''
|
|
Run a script when repair starts. One can use it to send statsd events, email, etc.
|
|
It has same semantics as systemd ExecStopPost; So, if it fails, unit is consisdered
|
|
failed.
|
|
'';
|
|
};
|
|
};
|
|
|
|
###### implementation
|
|
|
|
config = mkIf cfg.enable {
|
|
|
|
environment.etc."cassandra/cassandra-rackdc.properties" = {
|
|
source = cassandraRackFile;
|
|
};
|
|
environment.etc."cassandra/cassandra.yaml" = {
|
|
source = cassandraConfFile;
|
|
};
|
|
environment.etc."cassandra/log4j-server.properties" = {
|
|
source = cassandraLogFile;
|
|
};
|
|
environment.etc."cassandra/cassandra-env.sh" = {
|
|
text = ''
|
|
${builtins.readFile cfg.envFile}
|
|
${concatStringsSep "\n" cfg.extraParams}
|
|
'';
|
|
};
|
|
systemd.services.cassandra = {
|
|
description = "Cassandra Daemon";
|
|
wantedBy = [ "multi-user.target" ];
|
|
after = [ "network.target" ];
|
|
environment = cassandraEnvironment;
|
|
restartTriggers = [ cassandraConfFile cassandraLogFile cassandraRackFile ];
|
|
serviceConfig = {
|
|
|
|
User = cfg.user;
|
|
PermissionsStartOnly = true;
|
|
LimitAS = "infinity";
|
|
LimitNOFILE = "100000";
|
|
LimitNPROC = "32768";
|
|
LimitMEMLOCK = "infinity";
|
|
|
|
};
|
|
script = ''
|
|
${cassandraPackage}/bin/cassandra -f
|
|
'';
|
|
path = [
|
|
cfg.jre
|
|
cassandraPackage
|
|
pkgs.coreutils
|
|
];
|
|
preStart = ''
|
|
mkdir -m 0700 -p /etc/cassandra/triggers
|
|
mkdir -m 0700 -p /var/lib/cassandra /var/log/cassandra
|
|
chown ${cfg.user} /var/lib/cassandra /var/log/cassandra /etc/cassandra/triggers
|
|
'';
|
|
postStart = ''
|
|
sleep 2
|
|
while ! nodetool status >/dev/null 2>&1; do
|
|
sleep 2
|
|
done
|
|
nodetool status
|
|
'';
|
|
};
|
|
|
|
environment.systemPackages = [ cassandraPackage ];
|
|
|
|
networking.firewall.allowedTCPPorts = [
|
|
7000
|
|
7001
|
|
9042
|
|
9160
|
|
];
|
|
|
|
users.extraUsers.cassandra =
|
|
if config.ids.uids ? "cassandra"
|
|
then { uid = config.ids.uids.cassandra; } // cassandraUser
|
|
else cassandraUser ;
|
|
|
|
boot.kernel.sysctl."vm.swappiness" = pkgs.lib.mkOptionDefault 0;
|
|
|
|
systemd.timers."cassandra-repair" = {
|
|
timerConfig = {
|
|
OnCalendar = "${toString cfg.repairStartAt}";
|
|
RandomizedDelaySec = cfg.repairRandomizedDelayInSec;
|
|
};
|
|
};
|
|
|
|
systemd.services."cassandra-repair" = {
|
|
description = "Cassandra repair daemon";
|
|
environment = cassandraEnvironment;
|
|
script = "${cassandraPackage}/bin/nodetool repair -pr";
|
|
postStop = mkIf (cfg.repairPostStop != null) cfg.repairPostStop;
|
|
postStart = mkIf (cfg.repairPostStart != null) cfg.repairPostStart;
|
|
serviceConfig = {
|
|
User = cfg.user;
|
|
};
|
|
};
|
|
};
|
|
}
|