CentOS 5.8 で x86_64 な環境 (さくら vps) に memcached を入れる

% cat /etc/redhat-release
CentOS release 5.8 (Final)
cou929:kosei% uname -a
Linux cou929.nu 2.6.18-238.19.1.el5 #1 SMP Fri Jul 15 07:31:24 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux

yum だと rpmforge-extras にあるので, まだの場合はリポジトリの設定をする

$ rpm -Uhv http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/RPMS//rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

ほかのアーキテクチャだとここを参照: DAG: Frequently Asked Questions

rpmforge-extras に 1.4.7 がある

% yum info memcached --enablerepo rpmforge-extras
Loaded plugins: downloadonly, fastestmirror, priorities
172 packages excluded due to repository priority protections
Available Packages
Name       : memcached
Arch       : x86_64
Version    : 1.4.7
Release    : 1.el5.rfx
Size       : 81 k
Repo       : rpmforge-extras
Summary    : Distributed memory object caching system
URL        : http://memcached.org/
License    : BSD
Description: memcached is a high-performance, distributed memory object caching system,
           : generic in nature, but intended for use in speeding up dynamic web
           : applications by alleviating database load.

インストール

% sudo yum install -y memcached

ここらへんのパッケージに依存している

 perl-AnyEvent                                    x86_64                             5.340-1.el5.rfx                                rpmforge-extras                             360 k
 perl-Async-Interrupt                             x86_64                             1.05-1.el5.rf                                  rpmforge                                     76 k
 perl-EV                                          x86_64                             4.03-1.el5.rf                                  rpmforge                                    376 k
 perl-Guard                                       x86_64                             1.021-1.el5.rf                                 rpmforge                                     39 k
 perl-JSON                                        noarch                             2.50-1.el5.rf                                  rpmforge                                    100 k
 perl-JSON-XS                                     x86_64                             2.30-1.el5.rf                                  rpmforge                                    152 k
 perl-Net-SSLeay                                  x86_64                             1.36-1.el5.rfx                                 rpmforge-extras                             334 k
 perl-TermReadKey                                 x86_64                             2.30-3.el5.rf                                  rpmforge                                     57 k
 perl-YAML                                        noarch                             0.72-1.el5.rf                                  rpmforge                                     84 k
 perl-common-sense                                x86_64                             3.0-1.el5.rf                                   rpmforge                                     22 k

Net::SSLeay は base リポジトリにも古いバージョンがあったりするので, yum-(plugin)-repositories をいれておいて rpmforge の priority を上げておかないと依存が解決できないと怒られるかもしれない

% sudo cat /etc/yum.repos.d/rpmforge.repo                                                                                                                   [/home/kosei]
### Name: RPMforge RPM Repository for RHEL 5 - dag
### URL: http://rpmforge.net/
[rpmforge]
name = RHEL $releasever - RPMforge.net - dag
baseurl = http://apt.sw.be/redhat/el5/en/$basearch/rpmforge
mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge
#mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge
enabled = 1
protect = 0
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
gpgcheck = 1
priority=1

[rpmforge-extras]
name = RHEL $releasever - RPMforge.net - extras
baseurl = http://apt.sw.be/redhat/el5/en/$basearch/extras
mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge-extras
#mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge-extras
enabled = 1
protect = 0
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
gpgcheck = 1
priority=1

[rpmforge-testing]
name = RHEL $releasever - RPMforge.net - testing
baseurl = http://apt.sw.be/redhat/el5/en/$basearch/testing
mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge-testing
#mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge-testing
enabled = 1
protect = 0
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
gpgcheck = 1

バージョンチェック

% memcached -h | head -n 1                                                                                                                                  [/home/kosei]
memcached 1.4.7

設定確認

% cat /etc/sysconfig/memcached
PORT="11211"
USER="nobody"
MAXCONN="1024"
CACHESIZE="64"
OPTIONS="-l 127.0.0.1"

デーモン起動

% sudo /etc/init.d/memcached strat

確認

% ps aux | grep mem
nobody    9989  0.0  0.1 140884   956 ?        Ssl  17:02   0:00 memcached -d -p 11211 -u nobody -c 1024 -m 64
% telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
stats
STAT pid 10218
STAT uptime 20
STAT time 1336810604
STAT version 1.4.7
STAT libevent 1.4.13-stable
STAT pointer_size 64
STAT rusage_user 0.000000
STAT rusage_system 0.000999
STAT curr_connections 5
STAT total_connections 6
STAT connection_structures 6
STAT cmd_get 0
STAT cmd_set 0
STAT cmd_flush 0
STAT get_hits 0
STAT get_misses 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 auth_cmds 0
STAT auth_errors 0
STAT bytes_read 7
STAT bytes_written 0
STAT limit_maxbytes 67108864
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 0
STAT bytes 0
STAT curr_items 0
STAT total_items 0
STAT evictions 0
STAT reclaimed 0
END

chkconfig

% sudo /sbin/chkconfig --add memcached
% sudo /sbin/chkconfig --list | grep mem
memcached       0:off   1:off   2:on    3:on    4:on    5:on    6:off