{"id":6293,"date":"2016-09-14T20:48:25","date_gmt":"2016-09-14T12:48:25","guid":{"rendered":"http:\/\/rmohan.com\/?p=6293"},"modified":"2016-09-14T20:48:25","modified_gmt":"2016-09-14T12:48:25","slug":"haproxy-high-availability-cluster-configuration-redis-notes","status":"publish","type":"post","link":"https:\/\/mohan.sg\/?p=6293","title":{"rendered":"HaProxy high availability cluster configuration Redis notes"},"content":{"rendered":"

HaProxy high availability cluster configuration Redis notes<\/span><\/strong><\/h1>\n

Goal is to make a high-availability cluster for redis sensu use. redis cluster using Sentinel + Redis three-node configuration.
\nBlog post before configuring details<\/p>\n

Sentinel can be done when the master hang up automatically elect a new master, then it is not a proxy.
\nTherefore, we need a proxy ip to provide a client used herein HaProxy the agent.
\nTaking into account the HaProxy single node failure, the use of master-slave HaProxy Keepalived do in order to achieve a high-availability cluster Redis.<\/p>\n

tar zxvf haproxy-1.4.21.tar.gz
\nmv haproxy-1.4.21 \/usr\/local\/haproxy
\ncd \/usr\/local\/haproxy
\nmake install<\/p>\n

mkdir conf
\ncd conf
\nvim haproxy.cfg<\/p>\n

global
\nlog 127.0.0.1\u00a0\u00a0 local0
\nlog 127.0.0.1\u00a0\u00a0 local1 notice
\n#log loghost\u00a0\u00a0\u00a0 local0 info
\nmaxconn 4096
\nchroot \/usr\/local\/haproxy
\nuid 99
\ngid 99
\ndaemon
\n#debug
\n#quiet<\/p>\n

defaults
\nlog\u00a0\u00a0\u00a0\u00a0 global
\nmode\u00a0\u00a0\u00a0 tcp
\noption\u00a0 redispatch
\noption\u00a0 dontlognull
\nretries 2
\nmaxconn 2000
\nbalance roundrobin
\ncontimeout\u00a0\u00a0\u00a0\u00a0\u00a0 5000
\nclitimeout\u00a0\u00a0\u00a0\u00a0\u00a0 50000
\nsrvtimeout\u00a0\u00a0\u00a0\u00a0\u00a0 50000<\/p>\n

listen\u00a0 proxy 10.166.224.37:6379
\n#redis
\nserver redis_10.122.224.36 10.166.224.36:6379 check inter 2000 rise 2 fall 5
\nserver redis_10.122.224.35 10.166.224.35:6379 check inter 2000 rise 2 fall 5
\nserver redis_10.122.224.33 10.166.224.33:6379 check inter 2000 rise 2 fall 5<\/p>\n

\/usr\/local\/haproxy\/haproxy -f \/usr\/local\/haproxy\/conf\/haproxy.cfg<\/p>\n

[root@app2 ~]# redis-cli -h 192.168.1.11
\n192.168.1.11:6379> INFO
\n# Server
\nredis_version:2.8.19
\nredis_git_sha1:00000000
\nredis_git_dirty:0
\nredis_build_id:c0359e7aa3798aa2
\nredis_mode:standalone
\nos:Linux 3.10.0-327.28.3.el7.x86_64 x86_64
\narch_bits:64
\nmultiplexing_api:epoll
\ngcc_version:4.8.3
\nprocess_id:14574
\nrun_id:399a903ee13ab0b442d81020b174cafd5d91701a
\ntcp_port:6379
\nuptime_in_seconds:2820
\nuptime_in_days:0
\nhz:10
\nlru_clock:14238870
\nconfig_file:\/etc\/redis.conf<\/p>\n

# Clients
\nconnected_clients:2
\nclient_longest_output_list:0
\nclient_biggest_input_buf:0
\nblocked_clients:0<\/p>\n

# Memory
\nused_memory:857984
\nused_memory_human:837.88K
\nused_memory_rss:5955584
\nused_memory_peak:858120
\nused_memory_peak_human:838.01K
\nused_memory_lua:35840
\nmem_fragmentation_ratio:6.94
\nmem_allocator:jemalloc-3.6.0<\/p>\n

# Persistence
\nloading:0
\nrdb_changes_since_last_save:0
\nrdb_bgsave_in_progress:0
\nrdb_last_save_time:1473855549
\nrdb_last_bgsave_status:ok
\nrdb_last_bgsave_time_sec:0
\nrdb_current_bgsave_time_sec:-1
\naof_enabled:0
\naof_rewrite_in_progress:0
\naof_rewrite_scheduled:0
\naof_last_rewrite_time_sec:-1
\naof_current_rewrite_time_sec:-1
\naof_last_bgrewrite_status:ok
\naof_last_write_status:ok<\/p>\n

# Stats
\ntotal_connections_received:7
\ntotal_commands_processed:51
\ninstantaneous_ops_per_sec:0
\ntotal_net_input_bytes:22221
\ntotal_net_output_bytes:37208
\ninstantaneous_input_kbps:0.00
\ninstantaneous_output_kbps:0.00
\nrejected_connections:0
\nsync_full:0
\nsync_partial_ok:0
\nsync_partial_err:0
\nexpired_keys:0
\nevicted_keys:0
\nkeyspace_hits:1
\nkeyspace_misses:1
\npubsub_channels:0
\npubsub_patterns:0
\nlatest_fork_usec:821<\/p>\n

# Replication
\nrole:master
\nconnected_slaves:0
\nmaster_repl_offset:0
\nrepl_backlog_active:0
\nrepl_backlog_size:1048576
\nrepl_backlog_first_byte_offset:0
\nrepl_backlog_histlen:0<\/p>\n

# CPU
\nused_cpu_sys:1.03
\nused_cpu_user:0.69
\nused_cpu_sys_children:0.00
\nused_cpu_user_children:0.00<\/p>\n

# Keyspace
\ndb1:keys=5,expires=0,avg_ttl=0<\/p>\n","protected":false},"excerpt":{"rendered":"

HaProxy high availability cluster configuration Redis notes <\/p>\n

Goal is to make a high-availability cluster for redis sensu use. redis cluster using Sentinel + Redis three-node configuration. Blog post before configuring details<\/p>\n

Sentinel can be done when the master hang up automatically elect a new master, then it is not a proxy. Therefore, we need a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6293"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6293"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6293\/revisions"}],"predecessor-version":[{"id":6294,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/6293\/revisions\/6294"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}