命名空间存储配置(Namespace Storage Configuration)
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aerospike决定在哪里存储数据的存储引擎配置是基于命名空间的,这些引擎确定数据将被保存到磁盘,驻留在内存或者基于磁盘和内存的混合存储。这些决定将会影响持久性,成本和集群的性能。
Support for Multi-Bin(支持多个bin)
Supports full Aerospike data Model (支持所有的Aerospike数据模型)
Survive a Power Outage(停电时保持数据)
Fast Restarts(快速重启)
Support for XDR(支持跨数据中心复制)
Index in Memory(在内存中索引)
存储引擎配置方法
下面的方法需要修改Aerospike在/etc/aerospike/aerospike.conf的服务器的配置文件。
开始,在您喜欢的编辑器中打开配置文件并做相应的更改。
SSD存储引擎的方法
namespace <namespace-name> { memory-size <SIZE>G # Maximum memory allocation for primary# and secondary indexes.(最大内存分配给主索引和二级索引) storage-engine device { # Configure the storage-engine to use persistence(配置存储引擎使用的持久性) device /dev/<device> # raw device. Maximum size is 2 TiB(原始设备,最大的大小为2TB)# device /dev/<device> # (optional) another raw device.可选,其它设备 write-block-size 128K # adjust block size to make it efficient for SSDs.(调整block大小使SSD使用更高效) }}
磁盘存储和内存存储的方法
namespace <namespace-name> { memory-size <SIZE>G # Maximum memory allocation for data and# primary and secondary indexes.
(最大内存分配给主索引和二级索引)
storage-engine device { # Configure the storage-engine to use# persistence. Maximum size is 2 TiB(配置存储引擎使用的持久性。最大尺寸是2 TiB) file /opt/aerospike/<filename> # Location of data file on server.(数据文件在服务器中的位置)# file /opt/aerospike/<another> # (optional) Location of data file on server. filesize <SIZE>G # Max size of each file in GiB. data-in-memory true# Indicates that all data should also be# in memory.(表明所有数据也应该在内存中) }}
磁盘存储引擎和数据索引引擎的方法
namespace <namespace-name> { memory-size <N>G # Maximum memory allocation for data and# primary and secondary indexes. single-bin true# Required true by data-in-index. data-in-index true# Enables in index integer store. storage-engine device { # Configure the storage-engine to use# persistence. file /opt/aerospike/<filename> # Location of data file on server.# file /opt/aerospike/<another> # (optimal) Location of data file on server.# device /dev/<device> # Optional alternative to using files. filesize <SIZE>G # Max size of each file in GiB. Maximum size is 2TiB data-in-memory true# Required true by data-in-index. }}
数据在内存中没有持久化的方法
namespace <namespace-name> { memory-size <SIZE>G # Maximum memory allocation for data and primary and# secondary indexes. storage-engine memory # Configure the storage-engine to not use persistence.(配置存储引擎为不使用持久化)}
命名空间数据保留策略
namespace <namespace-name> { default-ttl <VALUE> # How long (in seconds) to keep data after# it is written high-water-disk-pct <PERCENT> # How full may the disk become before the# server begins eviction (expiring records# early) high-water-memory-pct <PERCENT> # How full may the memory become before the# server begins eviction (expiring records# early) stop-writes-pct <PERCENT> # How full may the memory become before# we disallow new writes ...}
set的数据保持
namespace <namespace-name> { ... set <set-name> { set-evict-hwm-count <COUNT> # How many records may reside in this set# before the server begins evicting# records from this setset-stop-writes-count <COUNT> # How many records may be in this set# before the server begins rejecting# writes to this set }}
Intracluster Replication
namespace <namespace-name> { ... replication-factor 2 ...}
服务器要求
Dell PowerEdge 12G R720 :
2 * CPU Xeon E5-2650 V2 ;
24 * 内存为:ECC 8G (单条):
1 * SSD 商用240G
7 * 硬盘为: 3.5 SAS 15K 600G, 硬盘做RAID5;
RAID卡为:PERC H710P ;
Intel四端口千兆网卡 ;
iDRAC6远程管理卡;
电源: 双电 750W;
操作系统版本:centos 6.7 liunx内核3.1以上
single-bin
设置为true时将不允许有多个bin的记录data-in-index
优化单个bin的情况,将只允许整数存储在索引空间cluster {
mode static #static:node-id必须是静态分配,dynamic:node-id基于本地ip地址动态选择,none:不要使用机架感应
self-node-id 101 #识别单个节点,在同一个组内必须是唯一的
#self-node-id 301
self-group-id 201 #确定节点的集合,同一个组里面的节点将没有副本
}
集群背景下需要paxos-protocol v4。
logging {
# Log file must be an absolute path.
file /data/server/aerospike-server/bin/var/log/aerospike.log {
context any info
}
}
logging { file /var/log/aerospike/aerospike.log { context any info } file /var/log/aerospike/aerospike_debug.log { context any debug }}
mod-lua {
system-path /data/server/aerospike-server/bin/share/udf/lua #系统默认函数
user-path /data/server/aerospike-server/bin/var/udf/lua #用户自定义函数
}
namespace test {
replication-factor 2
#memory-size 8G
#default-ttl 30d # 30 days, use 0 to never expire/evict.
#storage-engine memory
memory-size 8G
storage-engine device {
file /opt/aerospike/data.bat
filesize 20G
data-in-memory true #永远保持一份所有数据在内存中。默认为false
}
}
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