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Install Redis Multi cache installation help

Discussion in 'Install & Upgrades or Pre-Install Questions' started by Dnyan, Aug 10, 2019.

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  1. Aug 10, 2019 #1
    Dnyan

    Dnyan Member

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  2. Aug 10, 2019 #2
    eva2000

    eva2000 Administrator Staff Member

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  3. Aug 10, 2019 #3
    Dnyan

    Dnyan Member

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    is those commands are correct for second instance.

    Code:
    cd /svr-setup
wget -O redis-generator.sh https://github.com/centminmod/centminmod-redis/raw/master/redis-generator.sh
chmod +x redis-generator.sh
redis-generator.sh install
     
  4. Aug 10, 2019 #4
    eva2000

    eva2000 Administrator Staff Member

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    due to cd /svr-setup command you downloaded redis-generator.sh to /svr-setup/redis-generator.sh instead of where your current working directory is
     
  5. Aug 10, 2019 #5
    Dnyan

    Dnyan Member

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    where i should download to it.
    /usr/bin/redis-server ?
     
  6. Aug 10, 2019 #6
    eva2000

    eva2000 Administrator Staff Member

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    it's just a script don't download to /usr/bin where system binaries !

    you can create your own directory for your own scripts i.e. /root/mytools
    Code (Text):
    mkdir -p /root/mytools
cd /root/mytools
wget -O redis-generator.sh https://github.com/centminmod/centminmod-redis/raw/master/redis-generator.sh
chmod +x redis-generator.sh


    there's no such install command for redis-generator.sh it doesn't need installing just downloading to run.

    I suggest you create a test VPS with test centmin mod 123.09beta01 install from hourly VPS provider and test redis-generator.sh and tools outlined at https://github.com/centminmod/centminmod-redis on test VPS until you are familar as there's no support by me, so if you screw up your live VPS, you'd be on your own
     
  7. Aug 11, 2019 #7
    Dnyan

    Dnyan Member

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    Ok Thank You|

    Will it have any effect if i installed instances and left it unused like without doing configuration in src/config file for redis cache.

    What are the ways of removing those instances.
     
  8. Aug 11, 2019 #8
    eva2000

    eva2000 Administrator Staff Member

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    Redis installed and not configured to be used by xenforo will just sit there idling consuming some ideal memory resources. Removal is also outlined via the delete command at https://github.com/centminmod/centminmod-redis as it's provided as is.
     
  9. Aug 27, 2019 #9
    EckyBrazzz

    EckyBrazzz Active Member

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    Hi,

    I have a question. I installed Redis using this guide. https://community.centminmod.com/threads/how-to-install-redis-server-on-centmin-mod-lemp-stack.4546/

    I used that Installer because it uses YUM and updates it with a cron. Actually I did not look at the project on Github. So I don't know what it does.

    What is the best option. Install with the Git or the above indicated link. It's for my WP Multi site project and for more WP sites

    The Redis CLI give me this info
    Code (Text):
    redis_version:5.0.5
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:619d60bfb0a92c36
redis_mode:standalone
os:Linux 5.2.9-1.el7.elrepo.x86_64 x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:4.8.5
process_id:1300
run_id:7ac37bd4d01a6d9f05f3ce28dcda3501f50a16a6
tcp_port:6379
uptime_in_seconds:123262
uptime_in_days:1
hz:10
configured_hz:10
lru_clock:6586134
executable:/usr/bin/redis-server
config_file:/etc/redis.conf

# Clients
connected_clients:2
client_recent_max_input_buffer:2
client_recent_max_output_buffer:0
blocked_clients:0

# Memory
used_memory:4265552
used_memory_human:4.07M
used_memory_rss:14000128
used_memory_rss_human:13.35M
used_memory_peak:9838672
used_memory_peak_human:9.38M
used_memory_peak_perc:43.35%
used_memory_overhead:941438
used_memory_startup:791344
used_memory_dataset:3324114
used_memory_dataset_perc:95.68%
allocator_allocated:4433800
allocator_active:5214208
allocator_resident:8507392
total_system_memory:4136521728
total_system_memory_human:3.85G
used_memory_lua:51200
used_memory_lua_human:50.00K
used_memory_scripts:232
used_memory_scripts_human:232B
number_of_cached_scripts:1
maxmemory:1073741824
maxmemory_human:1.00G
maxmemory_policy:allkeys-lru
allocator_frag_ratio:1.18
allocator_frag_bytes:780408
allocator_rss_ratio:1.63
allocator_rss_bytes:3293184
rss_overhead_ratio:1.65
rss_overhead_bytes:5492736
mem_fragmentation_ratio:3.30
mem_fragmentation_bytes:9756560
mem_not_counted_for_evict:2062
mem_replication_backlog:0
mem_clients_slaves:0
mem_clients_normal:66616
mem_aof_buffer:2062
mem_allocator:jemalloc-5.1.0
active_defrag_running:0
lazyfree_pending_objects:0

# Persistence
loading:0
rdb_changes_since_last_save:113361
rdb_bgsave_in_progress:0
rdb_last_save_time:1566743960
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:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_last_cow_size:0
aof_current_size:199879837
aof_base_size:140011161
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:3475
total_commands_processed:229991
instantaneous_ops_per_sec:1
total_net_input_bytes:66200707
total_net_output_bytes:952438530
instantaneous_input_kbps:0.01
instantaneous_output_kbps:4.35
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:9673
expired_stale_perc:0.00
expired_time_cap_reached_count:0
evicted_keys:0
keyspace_hits:46517
keyspace_misses:34040
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
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

# Replication
role:master
connected_slaves:0
master_replid:db6a9b926fd53fe1bac74d5c69bae6aade12ff42
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

# CPU
used_cpu_sys:127.141152
used_cpu_user:161.744901
used_cpu_sys_children:0.000000
used_cpu_user_children:0.000000

# Cluster
cluster_enabled:0

# Keyspace
db0:keys=1219,expires=7,avg_ttl=463430601
db7:keys=183,expires=183,avg_ttl=263532


    It should work afterwards in a cluster, but for now not. I configured my WP for db7 or is it better to keep it in the same db (different TTL)
     
  10. Sep 1, 2019 #10
    eva2000

    eva2000 Administrator Staff Member

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    when you refer to git do you mean https://github.com/centminmod/centminmod-redis ? versus Redis - Insight Guide - How to install Redis server on Centmin Mod LEMP stack ?

    https://github.com/centminmod/centminmod-redis is a bundle of number of scripts:
    1. the redis-install.sh script at centminmod/centminmod-redis which is a script that automates the yum install instructions outlined at Redis - Insight Guide - How to install Redis server on Centmin Mod LEMP stack with some extra smarter setting/configuration detection.
    2. it also includes a redis-generator.sh at centminmod/centminmod-redis with examples outlined at centminmod/centminmod-redis which takes your existing yum installed redis binary (doesn't work without first install redis server) and can automate advanced redis configurations from redis clusters, redis master/slave replication + redis sentinels for monitoring and automated slave failover in event of redis master failures as well as generating multiple additional redis servers beyond the single yum installed redis instance so you can create your own additional redis servers, manually setup your own redis cluster or master/slave replication or play with redis proxying and sharding/proxies setups or more exotic configurations if you know what you're doing i.e. centminmod/centminmod-redis
    Again https://github.com/centminmod/centminmod-redis - particularly redis-generator.sh is provided as is so no support by me, it's just a tool I use to quickly build out redis cluster/proxies, sharded proxy configurations or redis master/slave replication testing for myself and my clients. Example centminmod/centminmod-redis.
     
  11. Sep 1, 2019 #11
    EckyBrazzz

    EckyBrazzz Active Member

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    So my install with the Redis - Insight Guide - How to install Redis server on Centmin Mod LEMP stack was an excellent choice. It also included some configuration for WordPress.

    The script redis-generator.sh come in handy for some other stuff I installed. In need it to set up the sentinel and for in for further use, the cluster that I have I mind. Thanks for that one.

    When I install WordPress with Centmin 22-2 (Redis) I always install the plugin Redis Object Cache and remove the KeyCDN. I generate the key for the wp-config.php as indicated on the guide Redis - Insight Guide - How to install Redis server on Centmin Mod LEMP stack on each domain I create. I noticed it gives me some "extra" performance, and just like you "being a speed freek:D" it means a lot to me.

    FYI: I spoke to the CEO of ServerHub - Dedicated Servers, Web Hosting, Virtual Private Servers and Infrastructure as a Service (IaaS). Their site indicates that the have a XEON GOLD. But they are offering on "special" request also XEON Platinum. And Nvme. 40 Gpbs Uplink Ports. I'm negotiating about it because now with many servers in a Cluster, I only need 3 servers from them to get better performance and I can dump the cluster (expensive) that I have now. Guess when deal is done you want to see the results in that threat "What's your install time:)"

    Well, need to look at the centminmod/centminmod-redis script if I gain some extra performance with some settings.
     
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