Redis-Cluster
类型: 有副本角色节点、带应用参数设置、初始化集群
该示例根据应用模版规范开发 Redis Cluster 应用的配置包
config.json
{
"type": "array",
"properties": [{
"key": "cluster",
"description": "Redis cluster properties",
"type": "array",
"properties": [{
"key": "name",
"label": "Name",
"description": "The name of the redis cluster service",
"type": "string",
"default": "Redis Cluster",
"required": "no"
}, {
"key": "description",
"label": "Description",
"description": "The description of the redis cluster service",
"type": "string",
"default": "",
"required": "no"
}, {
"key": "vxnet",
"label": "VxNet",
"description": "Choose a vxnet to join",
"type": "string",
"default": "",
"required": "yes"
}, {
"key": "nodes",
"description": "Redis nodes",
"type": "array",
"properties": [{
"key": "cpu",
"label": "CPU",
"description": "CPUs of each node",
"type": "integer",
"default": 1,
"range": [1, 2, 4, 8, 16],
"required": "yes"
}, {
"key": "memory",
"label": "Memory",
"description": "Memory of each node (in MiB)",
"type": "integer",
"default": 2048,
"range": [1024, 2048, 8192, 16384, 32768, 49152],
"required": "yes"
}, {
"key": "count",
"label": "Count",
"description": "Number of master nodes (shards) for the cluster to create",
"type": "integer",
"default": 3,
"required": "yes"
}, {
"key": "instance_class",
"label": "Instance Class",
"description": "The instance type for the cluster to run, such as high performance, high performance plus",
"type": "integer",
"default": 0,
"range": [0, 1],
"required": "yes"
}, {
"key": "replica",
"label": "Replica",
"description": "The replica number for each master",
"type": "integer",
"default": 1,
"required": "yes"
}]
}]
}, {
"key": "env",
"description": "Spark service properties",
"type": "array",
"properties": [{
"key": "activerehashing",
"label": "activerehashing",
"description": "Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in order to help rehashing the main Redis hash table",
"type": "boolean",
"default": true,
"required": "yes"
}, {
"key": "appendonly",
"label": "appendonly",
"description": "The Append Only File is an alternative persistence mode that provides much better durability.",
"type": "boolean",
"default": true,
"required": "yes"
}, {
"key": "appendfsync",
"label": "appendfsync",
"description": "It tells the Operating System to actually write data on disk instead of waiting for more data in the output buffer.",
"type": "string",
"default": "everysec",
"range": ["everysec", "no", "always"],
"required": "yes"
}, {
"key": "hash-max-ziplist-entries",
"label": "hash-max-ziplist-entries",
"description": "Hashes are encoded using a memory efficient data structure when they have a small number of entries",
"type": "integer",
"default": 512,
"required": "yes"
}, {
"key": "hash-max-ziplist-value",
"label": "hash-max-ziplist-value",
"description": "Hashes are encoded using a memory efficient data structure when they have a small number of entries",
"type": "integer",
"default": 64,
"required": "yes"
}, {
"key": "latency-monitor-threshold",
"label": "latency-monitor-threshold",
"description": "It samples different operations at runtime in order to collect data related to possible sources of latency of a Redis instance.",
"type": "integer",
"default": 0,
"required": "yes"
}, {
"key": "list-max-ziplist-entries",
"label": "list-max-ziplist-entries",
"description": "Small lists are encoded in a special way in order to save a lot of space.",
"type": "integer",
"default": 512,
"required": "yes"
}, {
"key": "list-max-ziplist-value",
"label": "list-max-ziplist-value",
"description": "Small lists are encoded in a special way in order to save a lot of space.",
"type": "integer",
"default": 64,
"required": "yes"
}, {
"key": "maxclients",
"label": "maxclients",
"description": "Set the max number of connected clients at the same time.",
"type": "integer",
"default": 65000,
"required": "yes"
}, {
"key": "maxmemory-policy",
"label": "maxmemory-policy",
"description": "The eviction policy to remove keys when the memory limit is reached.",
"type": "string",
"default": "volatile-lru",
"range": ["volatile-lru", "allkeys-lru", "volatile-random", "allkeys-random", "volatile-ttl", "noeviction"],
"required": "yes"
}, {
"key": "maxmemory-samples",
"label": "maxmemory-samples",
"description": "LRU and minimal TTL algorithms are not precise algorithms but approximated algorithms (in order to save memory), using this to tune it for speed or accuracy.",
"type": "integer",
"default": 3,
"required": "yes"
}, {
"key": "min-slaves-max-lag",
"label": "min-slaves-max-lag",
"description": "A master stops accepting writes if there are less than N slaves connected, having a lag less or equal than M seconds.",
"type": "integer",
"default": 10,
"required": "yes"
}, {
"key": "min-slaves-to-write",
"label": "min-slaves-to-write",
"description": "A master stops accepting writes if there are less than N slaves connected, having a lag less or equal than M seconds.",
"type": "integer",
"default": 0,
"required": "yes"
}, {
"key": "no-appendfsync-on-rewrite",
"label": "no-appendfsync-on-rewrite",
"description": "It prevents fsync() from being called in the main process while a BGSAVE or BGREWRITEAOF is in progress.",
"type": "boolean",
"default": true,
"required": "yes"
}, {
"key": "notify-keyspace-events",
"label": "notify-keyspace-events",
"description": "It selects the events that Redis will notify among a set of classes.",
"type": "string",
"default": "",
"required": "no"
}, {
"key": "repl-backlog-size",
"label": "repl-backlog-size",
"description": "Set the replication backlog size.",
"type": "integer",
"default": 1048576,
"required": "yes"
}, {
"key": "repl-backlog-ttl",
"label": "repl-backlog-ttl",
"description": "It configures the amount of seconds that need to elapse, starting from the time the last slave disconnected, for the backlog buffer to be freed.",
"type": "integer",
"default": 3600,
"required": "yes"
}, {
"key": "repl-timeout",
"label": "repl-timeout",
"description": "It is the replication timeout.",
"type": "integer",
"default": 60,
"required": "yes"
}, {
"key": "set-max-intset-entries",
"label": "set-max-intset-entries",
"description": "It sets the limit in the size of the set in order to use this special memory saving encoding.",
"type": "integer",
"default": 512,
"required": "yes"
}, {
"key": "slowlog-log-slower-than",
"label": "slowlog-log-slower-than",
"description": "It logs queries that exceeded a specified execution time.",
"type": "integer",
"default": -1,
"required": "yes"
}, {
"key": "slowlog-max-len",
"label": "slowlog-max-len",
"description": "It logs queries with the length of the slow log.",
"type": "integer",
"default": 128,
"required": "yes"
}, {
"key": "tcp-keepalive",
"label": "tcp-keepalive",
"description": "TCP keepalive between server and client.",
"type": "integer",
"default": 0,
"required": "yes"
}, {
"key": "timeout",
"label": "timeout",
"description": "Close the connection after a client is idle for N seconds (0 to disable).",
"type": "integer",
"default": 0,
"required": "yes"
}, {
"key": "zset-max-ziplist-entries",
"label": "zset-max-ziplist-entries",
"description": "Sorted sets are specially encoded in order to save a lot of space.",
"type": "integer",
"default": 128,
"required": "yes"
}, {
"key": "zset-max-ziplist-value",
"label": "zset-max-ziplist-value",
"description": "Sorted sets are specially encoded in order to save a lot of space.",
"type": "integer",
"default": 64,
"required": "yes"
}]
}]
}
cluster.json.mustache
{
"name": {{cluster.name}},
"description": {{cluster.description}},
"vxnet": {{cluster.vxnet}},
"nodes": [{
"role": "nodes",
"container": {
"type": "kvm",
"zone": "sh1a",
"image": "img-redis3-c"
},
"instance_class": {{cluster.nodes.instance_class}},
"count": {{cluster.nodes.count}},
"cpu": {{cluster.nodes.cpu}},
"memory": {{cluster.nodes.memory}},
"volume": {
"size": {{cluster.nodes.memory}} * 2 / 1024 * 10,
"mount_point": "/data",
"filesystem": "xfs"
},
"replica": {{cluster.nodes.replica}},
"services": {
"init": {
"nodes_to_execute_on": 1,
"post_start_service": true,
"cmd": "/opt/redis/bin/init_cluster.sh"
},
"start": {
"cmd": "mkdir -p /data/redis/logs; ulimit -n 65536; /opt/redis/bin/redis-server /opt/redis/redis.conf"
},
"stop": {
"cmd": "/opt/redis/bin/stop-redis-server.sh"
},
"scale_in": {
"nodes_to_execute_on": 1,
"cmd": "/opt/redis/bin/scaling-in.sh"
},
"scale_out": {
"nodes_to_execute_on": 1,
"cmd": "/opt/redis/bin/scaling-out.sh"
}
}
}],
"env": {
"activerehashing": {{env.activerehashing}},
"appendonly": {{env.appendonly}},
"appendfsync": {{env.appendfsync}},
"hash-max-ziplist-entries": {{env.hash-max-ziplist-entries}},
"hash-max-ziplist-value": {{env.hash-max-ziplist-value}},
"latency-monitor-threshold": {{env.latency-monitor-threshold}},
"list-max-ziplist-entries": {{env.list-max-ziplist-entries}},
"list-max-ziplist-value": {{env.list-max-ziplist-value}},
"maxclients": {{env.maxclients}},
"maxmemory-policy": {{env.maxmemory-policy}},
"maxmemory-samples": {{env.maxmemory-samples}},
"min-slaves-max-lag": {{env.min-slaves-max-lag}},
"min-slaves-to-write": {{env.min-slaves-to-write}},
"no-appendfsync-on-rewrite": {{env.no-appendfsync-on-rewrite}},
"notify-keyspace-events": {{env.notify-keyspace-events}},
"repl-backlog-size": {{env.repl-backlog-size}},
"repl-backlog-ttl": {{env.repl-backlog-ttl}},
"repl-timeout": {{env.repl-timeout}},
"set-max-intset-entries": {{env.set-max-intset-entries}},
"slowlog-log-slower-than": {{env.slowlog-log-slower-than}},
"slowlog-max-len": {{env.slowlog-max-len}},
"tcp-keepalive": {{env.tcp-keepalive}},
"timeout": {{env.timeout}},
"zset-max-ziplist-entries": {{env.zset-max-ziplist-entries}},
"zset-max-ziplist-value": {{env.zset-max-ziplist-value}}
},
"advanced_actions": ["scale_horizontal"],
"endpoints": {
"client": {
"port": 6379,
"protocol": "tcp"
}
}
}