营销型网站需要注意,甜品网站模板,新沂网站优化,网站项目ppt怎么做文章目录 Redis分布式高可用集群搭建一、redis集群有三种方式#xff1a;1. 主从模式2. 哨兵3. 集群#xff08;master-cluster#xff09; 二、基于centos7操作系统操做1. 关闭防火墙#xff0c;三台机器都执行2. hostname修改#xff0c;三台机器都执行,这一步是为了在内… 文章目录 Redis分布式高可用集群搭建一、redis集群有三种方式1. 主从模式2. 哨兵3. 集群master-cluster 二、基于centos7操作系统操做1. 关闭防火墙三台机器都执行2. hostname修改三台机器都执行,这一步是为了在内网中三台服务器能相互连通3. 免登陆三台机器都执行4. 安装gcc并升级5. 下载redis在三台机器上都执行6.创建目录7. 修改配置三台机器都要对应修改对应开头的表格8. 启动并且创建集群9. 集群节点信息10. 查看集群状态11. 查看节点内存、cpu、key数量等信息12. 集群代理 Redis分布式高可用集群搭建
2020年发布的Redis6.0是Redis自发布以来最大的升级提供了多线程支持ACLs细粒度的权限管理SSL加密客户端缓存集群代理等多项重大更新一、redis集群有三种方式
主从复制哨兵集群master-cluster
1. 主从模式
主从关系简单说是以主库为准从库内容异步复制主数据库从而达成主从内容基本一致的情况。master节点挂了以后redis就不能对外提供写服务了此模式不推荐2. 哨兵
哨兵模式是基于主从模式的比主从多了自动切换系统更健壮可用性更高 但是较难支持在线扩容单机瓶颈尤为突出此模式不推荐3. 集群master-cluster
解决单机性能瓶颈支持横向扩展节点故障转移真正实习系统高可用此模式推荐集群master-cluster最低配置两个副本三个分片那么至少需要6个节点压缩至两个节点一台机器那么至少需要3台服务器低于3台无法实现高可用集群建议6台redis1 10.1.10.204 主 8001
redis2 10.1.10.205 主 8002
redis3 10.1.10.206 主 8003
redis4 10.1.10.204 备 8004
redis5 10.1.10.205 备 8005
redis6 10.1.10.206 备 8006二、基于centos7操作系统操做
1. 关闭防火墙三台机器都执行
systemctl stop firewalld
systemctl disable firewalld2. hostname修改三台机器都执行,这一步是为了在内网中三台服务器能相互连通
vi /etc/hosts
10.1.10.204 r1
10.1.10.205 r2
10.1.10.206 r33. 免登陆三台机器都执行
ssh-keygen -t rsa
ssh-copy-id 10.1.10.204
ssh-copy-id 10.1.10.205
ssh-copy-id 10.1.10.2064. 安装gcc并升级
yum install readline-devel pcre-devel openssl-devel gcc
yum -y install centos-release-scl
yum -y install devtoolset-9-gcc devtoolset-9-gcc-c devtoolset-9-binutils
scl enable devtoolset-9 bash
echo source /opt/rh/devtoolset-9/enable /etc/profile5. 下载redis在三台机器上都执行
mkdir -vp /u01/soft
cd /u01/soft/
wget https://download.redis.io/releases/redis-6.0.9.tar.gz
tar zxf redis-6.0.9.tar.gz
cd redis-6.0.9
make MALLOClibc
make PREFIX/usr/local/redis install6.创建目录
在204服务器执行:
mkdir /u01/redis-cluster
cd /u01/redis-cluster/
mkdir redis01
mkdir redis04
mkdir /usr/local/redis-cluster
cd /usr/local/redis-cluster
mkdir redis01
mkdir redis04
cp /u01/soft/redis-6.0.9/redis.conf /usr/local/redis-cluster/redis01
cp /u01/soft/redis-6.0.9/redis.conf /usr/local/redis-cluster/redis04
cp /u01/soft/redis-6.0.9/src/redis-server /usr/local/redis-cluster/redis01
cp /u01/soft/redis-6.0.9/src/redis-server /usr/local/redis-cluster/redis04在205服务器执行:
mkdir /u01/redis-cluster
cd /u01/redis-cluster/
mkdir redis02
mkdir redis05
mkdir /usr/local/redis-cluster
cd /usr/local/redis-cluster
mkdir redis02
mkdir redis05
cp /u01/soft/redis-6.0.9/redis.conf /usr/local/redis-cluster/redis02
cp /u01/soft/redis-6.0.9/redis.conf /usr/local/redis-cluster/redis05
cp /u01/soft/redis-6.0.9/src/redis-server /usr/local/redis-cluster/redis02
cp /u01/soft/redis-6.0.9/src/redis-server /usr/local/redis-cluster/redis05在206服务器执行:
mkdir /u01/redis-cluster
cd /u01/redis-cluster/
mkdir redis03
mkdir redis06
mkdir /usr/local/redis-cluster
cd /usr/local/redis-cluster
mkdir redis03
mkdir redis06
cp /u01/soft/redis-6.0.9/redis.conf /usr/local/redis-cluster/redis03
cp /u01/soft/redis-6.0.9/redis.conf /usr/local/redis-cluster/redis06
cp /u01/soft/redis-6.0.9/src/redis-server /usr/local/redis-cluster/redis03
cp /u01/soft/redis-6.0.9/src/redis-server /usr/local/redis-cluster/redis067. 修改配置三台机器都要对应修改对应开头的表格
$ vim redis01/redis.conf#是否开启保护模式默认开启。要是配置里没有指定bind和密码。开启该参数后redis只会本地进行访问拒绝外部访问。
protected-mode no
#redis监听的端口号
port 8001
#是否在后台执行yes后台运行no不是后台运行
daemonize yes
#redis的进程文件
pidfile /var/run/redis_8001.pid
# 指定了记录日志的文件。空字符串的话日志会打印到标准输出设备。后台运行的redis标准输出是/dev/null
logfile /u01/redis-cluster/redis01/redis_8001.log
# 指定本地数据库文件名一般采用默认的 dump.rdb
# dbfilename /u01/redis-cluster/redis01/dump-8001.rdb
# 数据目录数据库的写入会在这个目录。rdb、aof文件也会写在这个目录
dir /u01/redis-cluster/redis04/
# 集群
cluster-enabled yes
# 生成的node文件不过不指定名称则直接为nodes.conf。在同一台服务器上启动第二个实列的时候就会报错。因为nodes.conf文件发生冲突
cluster-config-file nodes-8001.conf
appendonly yes
appendfilename appendonly-8001.aof8. 启动并且创建集群
分别启动6个节点
./redis-server redis.conf
创建集群 ./redis-cli --cluster create 10.1.10.204:8001 10.1.10.205:8002 10.1.10.206:8003 10.1.10.205:8005 10.1.10.206:8006 10.1.10.204:8004 --cluster-replicas 19. 集群节点信息
./redis-cli -h 10.1.10.204 -p 8004 cluster nodes
d148088d84486a5cc98d34df2003e80eac1c2c97 10.1.10.205:800518005 slave ed308cac5868f5284340fa96320453748d4c11c2 0 1605686204000 1 connected
70d624e48b69c0ab1c3f041bde83cca4ad3c2865 10.1.10.204:800418004 myself,slave 1a8e7da0488175a103c6b714e8e87410c326b868 0 1605686204000 3 connected
874a8cd728fc4134271863b6f71365d61da00659 10.1.10.206:800618006 slave 4bd9f8bac50539b6435c72ebc6b5a448ebbedcef 0 1605686204645 2 connected
ed308cac5868f5284340fa96320453748d4c11c2 10.1.10.204:800118001 master - 0 1605686205647 1 connected 0-5460
4bd9f8bac50539b6435c72ebc6b5a448ebbedcef 10.1.10.205:800218002 master - 0 1605686203000 2 connected 5461-10922
1a8e7da0488175a103c6b714e8e87410c326b868 10.1.10.206:800318003 master - 0 1605686204000 3 connected 10923-1638310. 查看集群状态
./redis-cli -h 10.1.10.204 -p 8001 cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:3
cluster_current_epoch:6
cluster_my_epoch:1
cluster_stats_messages_ping_sent:1861
cluster_stats_messages_pong_sent:1866
cluster_stats_messages_sent:3727
cluster_stats_messages_ping_received:1861
cluster_stats_messages_pong_received:1861
cluster_stats_messages_meet_received:5
cluster_stats_messages_received:372711. 查看节点内存、cpu、key数量等信息
./redis-cli -h 10.1.10.204 -p 8004 info
# Server
redis_version:6.0.9
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:e0eeddaa7861f7a5
redis_mode:cluster
os:Linux 3.10.0-1127.el7.x86_64 x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:9.3.1
process_id:8495
run_id:afe2d5b775ad69688a70dfbb9406b6549cd2bf7c
tcp_port:8004
uptime_in_seconds:2212
uptime_in_days:0
hz:10
configured_hz:10
lru_clock:11850857
executable:/usr/local/redis-cluster/redis04/./redis-server
config_file:/usr/local/redis-cluster/redis04/redis.conf
io_threads_active:0# Clients
connected_clients:4
client_recent_max_input_buffer:8
client_recent_max_output_buffer:0
blocked_clients:0
tracking_clients:0
clients_in_timeout_table:0# Memory
used_memory:2703376
used_memory_human:2.58M
used_memory_rss:18468864
used_memory_rss_human:17.61M
used_memory_peak:2703376
used_memory_peak_human:2.58M
used_memory_peak_perc:100.05%
used_memory_overhead:2570664
used_memory_startup:1460576
used_memory_dataset:132712
used_memory_dataset_perc:10.68%
allocator_allocated:2799904
allocator_active:3207168
allocator_resident:6090752
total_system_memory:16656355328
total_system_memory_human:15.51G
used_memory_lua:37888
used_memory_lua_human:37.00K
used_memory_scripts:0
used_memory_scripts_human:0B
number_of_cached_scripts:0
maxmemory:0
maxmemory_human:0B
maxmemory_policy:noeviction
allocator_frag_ratio:1.15
allocator_frag_bytes:407264
allocator_rss_ratio:1.90
allocator_rss_bytes:2883584
rss_overhead_ratio:3.03
rss_overhead_bytes:12378112
mem_fragmentation_ratio:7.00
mem_fragmentation_bytes:15828952
mem_not_counted_for_evict:0
mem_replication_backlog:1048576
mem_clients_slaves:0
mem_clients_normal:61504
mem_aof_buffer:8
mem_allocator:jemalloc-5.1.0
active_defrag_running:0
lazyfree_pending_objects:0# Persistence
loading:0
rdb_changes_since_last_save:0
rdb_bgsave_in_progress:0
rdb_last_save_time:1605684165
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
rdb_last_cow_size:0
aof_enabled:1
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:0
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_last_cow_size:2252800
module_fork_in_progress:0
module_fork_last_cow_size:0
aof_current_size:92
aof_base_size:92
aof_pending_rewrite:0
aof_buffer_length:0
aof_rewrite_buffer_length:0
aof_pending_bio_fsync:0
aof_delayed_fsync:0# Stats
total_connections_received:9
total_commands_processed:319
instantaneous_ops_per_sec:0
total_net_input_bytes:5222
total_net_output_bytes:433184
instantaneous_input_kbps:0.00
instantaneous_output_kbps:0.02
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:0
expired_stale_perc:0.00
expired_time_cap_reached_count:0
expire_cycle_cpu_milliseconds:0
evicted_keys:0
keyspace_hits:0
keyspace_misses:0
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:705
migrate_cached_sockets:0
slave_expires_tracked_keys:0
active_defrag_hits:0
active_defrag_misses:0
active_defrag_key_hits:0
active_defrag_key_misses:0
tracking_total_keys:0
tracking_total_items:0
tracking_total_prefixes:0
unexpected_error_replies:0
total_reads_processed:327
total_writes_processed:2236
io_threaded_reads_processed:0
io_threaded_writes_processed:0# Replication
role:slave
master_host:10.1.10.206
master_port:8003
master_link_status:up
master_last_io_seconds_ago:4
master_sync_in_progress:0
slave_repl_offset:2982
slave_priority:100
slave_read_only:1
connected_slaves:0
master_replid:2f4df65f8ad840253afb0fb57cf51a4fdbc9eed3
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:2982
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:2982# CPU
used_cpu_sys:0.928872
used_cpu_user:1.269668
used_cpu_sys_children:0.001825
used_cpu_user_children:0.000000# Modules# Cluster
cluster_enabled:1# Keyspace12. 集群代理
git clone https://github.com/artix75/redis-cluster-proxy
cd redis-cluster-proxy
make PREFIX/usr/local/redis_cluster_proxy install
./bin/redis-cluster-proxy -c ./proxy.conf
