Debian 11.2にMemcachedをインストールする

2022年3月12日

環境
# cat/etc/debian_version
11.2

インストールの方法
1.インストール可能Memcachedの確認

# sudo apt show memcached
Package: memcached
Version: 1.6.9+dfsg-1
Priority: optional
Section: web

2.Memcachedのインストール

# apt-get install memcached libmemcached-tools -y

3.ステータスを確認します

# systemctl status memcached
● memcached.service - memcached daemon
Loaded: loaded (/lib/systemd/system/memcached.service; enabled; vendor pre>
Active: active (running) since Sat 2022-03-12 18:59:08 JST; 8min ago

4.memcachedプロセスを確認します

# ss -antpl | grep memcached
LISTEN 0 1024 127.0.0.1:11211 0.0.0.0:* users:(("memcached",pid=2399,fd=26))

5.Memcachedのバージョンを確認します
Memcachedに接続します

# telnet 127.0.0.1 11211
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.

ここで「version」と入力して、Enterキーを押下します。
version
VERSION 1.6.9

6.Memcachedのステータスを確認します

stats
STAT pid 2399
STAT uptime 10627
STAT time 1647089773
STAT version 1.6.9
STAT libevent 2.1.12-stable
STAT pointer_size 64
STAT rusage_user 2.216063
STAT rusage_system 1.792467
STAT max_connections 1024
STAT curr_connections 1
STAT total_connections 3
STAT rejected_connections 0
STAT connection_structures 2
STAT response_obj_oom 0
STAT response_obj_count 1
STAT response_obj_bytes 32768
STAT read_buf_count 4
STAT read_buf_bytes 65536
STAT read_buf_bytes_free 16384
STAT read_buf_oom 0
STAT reserved_fds 20
STAT cmd_get 0
STAT cmd_set 1
STAT cmd_flush 0
STAT cmd_touch 0
STAT cmd_meta 0
STAT get_hits 0
STAT get_misses 0
STAT get_expired 0
STAT get_flushed 0
STAT delete_misses 0
STAT delete_hits 0
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT touch_hits 0
STAT touch_misses 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 123
STAT bytes_written 2268
STAT limit_maxbytes 67108864
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT time_in_listen_disabled_us 0
STAT threads 4
STAT conn_yields 0
STAT hash_power_level 16
STAT hash_bytes 524288
STAT hash_is_expanding 0
STAT slab_reassign_rescues 0
STAT slab_reassign_chunk_rescues 0
STAT slab_reassign_evictions_nomem 0
STAT slab_reassign_inline_reclaim 0
STAT slab_reassign_busy_items 0
STAT slab_reassign_busy_deletes 0
STAT slab_reassign_running 0
STAT slabs_moved 0
STAT lru_crawler_running 0
STAT lru_crawler_starts 19
STAT lru_maintainer_juggles 10733
STAT malloc_fails 0
STAT log_worker_dropped 0
STAT log_worker_written 0
STAT log_watcher_skipped 0
STAT log_watcher_sent 0
STAT unexpected_napi_ids 0
STAT round_robin_fallback 0
STAT bytes 69
STAT curr_items 1
STAT total_items 1
STAT slab_global_page_pool 0
STAT expired_unfetched 0
STAT evicted_unfetched 0
STAT evicted_active 0
STAT evictions 0
STAT reclaimed 0
STAT crawler_reclaimed 0
STAT crawler_items_checked 0
STAT lrutail_reflocked 0
STAT moves_to_cold 1
STAT moves_to_warm 0
STAT moves_within_lru 0
STAT direct_reclaims 0
STAT lru_bumps_dropped 0
END