使用Docker安装部署Redis Cluster集群

本文主要展示Redis Cluster的部署步骤。
1准备阶段：

Dockerfile文件内容
FROM alpine:3.7 # add our user and group first to make sure their IDs get
assigned consistently, regardless of whatever dependencies get added RUN
addgroup -S redis && adduser -S -G redis redis # grab su-exec for easy
step-down from root RUN apk add --no-cache 'su-exec>=0.2' ENV REDIS_VERSION
4.0.9 ENV REDIS_DOWNLOAD_URL
http://download.redis.io/releases/redis-4.0.9.tar.gz ENV REDIS_DOWNLOAD_SHA
df4f73bc318e2f9ffb2d169a922dec57ec7c73dd07bccf875695dbeecd5ec510 # for
redis-sentinel see: http://redis.io/topics/sentinel RUN set -ex; \ \ apk add
--no-cache --virtual .build-deps \ coreutils \ gcc \ linux-headers \ make \
musl-dev \ ; \ \ wget -O redis.tar.gz "$REDIS_DOWNLOAD_URL"; \ echo
"$REDIS_DOWNLOAD_SHA *redis.tar.gz" | sha256sum -c -; \ mkdir -p
/usr/src/redis; \ tar -xzf redis.tar.gz -C /usr/src/redis --strip-components=1;
\ rm redis.tar.gz; \ \ # disable Redis protected mode [1] as it is unnecessary
in context of Docker # (ports are not automatically exposed when running inside
Docker, but rather explicitly by specifying -p / -P) # [1]:
https://github.com/antirez/redis/commit/edd4d555df57dc84265fdfb4ef59a4678832f6da
grep -q '^#define CONFIG_DEFAULT_PROTECTED_MODE 1$'
/usr/src/redis/src/server.h; \ sed -ri 's!^(#define
CONFIG_DEFAULT_PROTECTED_MODE) 1$!\1 0!' /usr/src/redis/src/server.h; \ grep -q
'^#define CONFIG_DEFAULT_PROTECTED_MODE 0$' /usr/src/redis/src/server.h; \ #
for future reference, we modify this directly in the source instead of just
supplying a default configuration flag because apparently "if you specify any
argument to redis-server, [it assumes] you are going to specify everything" #
see also https://github.com/docker-library/redis/issues/4#issuecomment-50780840
# (more exactly, this makes sure the default behavior of "save on SIGTERM"
stays functional by default) \ make -C /usr/src/redis -j "$(nproc)"; \ make -C
/usr/src/redis install; \ \ rm -r /usr/src/redis; \ \ runDeps="$( \ scanelf
--needed --nobanner --format '%n#p' --recursive /usr/local \ | tr ',' '\n' \ |
sort -u \ | awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print
"so:" $1 }' \ )"; \ apk add --virtual .redis-rundeps $runDeps; \ apk del
.build-deps; \ \ redis-server --version RUN mkdir /data && chown redis:redis
/data VOLUME /data WORKDIR /data CMD ["redis-server"]
redis.conf文件内容
port 7000 ##每个容器的端口设置成不一样 pidfile /var/run/redis_6379.pid maxmemory 50m
appendonly yes ################################ REDIS CLUSTER
############################### cluster-enabled yes cluster-config-file
nodes-6379.conf cluster-node-timeout 5000 # cluster-slave-validity-factor 10 #
cluster-migration-barrier 1 # cluster-require-full-coverage yes #
cluster-slave-no-failover no ################################## SLOW LOG
################################### slowlog-log-slower-than 10000
slowlog-max-len 128
在7000、7001、7002、7003、7004、7005目录下面各有一个redis.conf，除了port不一致，其他都一致。

2、部署阶段：
[root@localhost home]# pwd /home [root@localhost home]# ll drwxrwxrwx. 3 root
root 44 5月 14 23:41 redis -rwxrwxrwx. 1 root root 1710169 5月 14 13:04
redis-4.0.0.tar.gz -rwxrwxrwx. 1 root root 15923244 5月 13 23:35
ruby-2.5.1.tar.gz [root@localhost home]# cd redis [root@localhost redis]# ll
drwxrwxrwx. 8 root root 78 5月 14 23:41 cluster_conf -rwxrwxrwx. 1 root root
2352 5月 15 2018 Dockerfile 1、构建redis的docker镜像 [root@localhost redis]# docker
build -f Dockerfile -t lee9213/redis:4.0.9 /home/redis/ 2、查看镜像构建成功
[root@localhost redis]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE
lee9213/redis 4.0.9 49fb78432b3c About a minute ago 27.8 MB docker.io/alpine
3.7 3fd9065eaf02 4 months ago 4.15 MB
3、启动docker容器，redis规定使用docker集群，容器的网络模式必须是host模式 [root@localhost redis]# docker
run -t -P --restart=always --net=host --privileged=true -v
/home/redis/cluster_conf/7000/redis.conf:/etc/redis.conf --name redis7000
49fb78432b3c redis-server /etc/redis.conf [root@localhost redis]# docker run -t
-P --restart=always --net=host --privileged=true -v
/home/redis/cluster_conf/7001/redis.conf:/etc/redis.conf --name redis7001
49fb78432b3c redis-server /etc/redis.conf [root@localhost redis]# docker run -t
-P --restart=always --net=host --privileged=true -v
/home/redis/cluster_conf/7002/redis.conf:/etc/redis.conf --name redis7002
49fb78432b3c redis-server /etc/redis.conf [root@localhost redis]# docker run -t
-P --restart=always --net=host --privileged=true -v
/home/redis/cluster_conf/7003/redis.conf:/etc/redis.conf --name redis7003
49fb78432b3c redis-server /etc/redis.conf [root@localhost redis]# docker run -t
-P --restart=always --net=host --privileged=true -v
/home/redis/cluster_conf/7004/redis.conf:/etc/redis.conf --name redis7004
49fb78432b3c redis-server /etc/redis.conf [root@localhost redis]# docker run -t
-P --restart=always --net=host --privileged=true -v
/home/redis/cluster_conf/7005/redis.conf:/etc/redis.conf --name redis7005
49fb78432b3c redis-server /etc/redis.conf 4、查看redis容器启动成功 [root@localhost
redis]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
92ff2de33ab5 49fb78432b3c "redis-server /etc..." 4 seconds ago Up 3 seconds
redis7005 87322567c038 49fb78432b3c "redis-server /etc..." 11 seconds ago Up 10
seconds redis7004 78d3f4f57c15 49fb78432b3c "redis-server /etc..." 17 seconds
ago Up 16 seconds redis7003 face88181023 49fb78432b3c "redis-server /etc..." 24
seconds ago Up 23 seconds redis7002 4669751d068f 49fb78432b3c "redis-server
/etc..." 31 seconds ago Up 30 seconds redis7001 69ad687fd7d3 49fb78432b3c
"redis-server /etc..." 38 seconds ago Up 37 seconds redis7000 5、查看redis容器端口
[root@localhost redis]# netstat -tnlp | grep redis tcp 0 0 0.0.0.0:7000
0.0.0.0:* LISTEN 58842/redis-server tcp 0 0 0.0.0.0:7001 0.0.0.0:* LISTEN
58876/redis-server tcp 0 0 0.0.0.0:7002 0.0.0.0:* LISTEN 58910/redis-server tcp
0 0 0.0.0.0:7003 0.0.0.0:* LISTEN 58945/redis-server tcp 0 0 0.0.0.0:7004
0.0.0.0:* LISTEN 58979/redis-server tcp 0 0 0.0.0.0:7005 0.0.0.0:* LISTEN
59014/redis-server [root@localhost redis]# cd .. 6、解压ruby [root@localhost
home]# tar -zxvf ruby-2.5.1.tar.gz [root@localhost home]# cd ruby-2.5.1
7、编译ruby [root@localhost ruby-2.5.1]# ./configure --prefix=/usr/local/ruby
8、安装ruby [root@localhost ruby-2.5.1]# make && make install 9、设置ruby环境变量
[root@localhost ruby-2.5.1]# vi ~/.bash_profile
10、将.bash_profile中的PATH=$PATH:$HOME/bin修改为PATH=/usr/local/ruby/bin:$PATH:$HOME/bin
11、使.bash_profile生效 [root@localhost home]# source ~/.bash_profile
12、查看ruby安装成功没有 [root@localhost ruby-2.5.1]# ruby -v ruby 2.5.1p57 (2018-03-29
revision 63029) [x86_64-linux] 13、安装redis的ruby包，安装过程出现问题,解决方案在最后
[root@localhost ruby-2.5.1]# gem install redis Fetching: redis-4.0.1.gem (100%)
Successfully installed redis-4.0.1 Parsing documentation for redis-4.0.1
Installing ri documentation for redis-4.0.1 Done installing documentation for
redis after 0 seconds 1 gem installed [root@localhost ruby-2.5.1]# cd ..
14、解压redis源码，安装过程问题,解决方案在最后 [root@localhost home]# tar -zxvf redis-4.0.0.tar.gz
[root@localhost home]# cd redis-4.0.0 [root@localhost redis-4.0.0]# make
[root@localhost redis-4.0.0]# cd src 15、创建集群 [root@localhost src]#
./redis-trib.rb create --replicas 1 127.0.0.1:7000 127.0.0.1:7001
127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 >>> Creating
cluster >>> Performing hash slots allocation on 6 nodes... Using 3 masters:
127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 Adding replica 127.0.0.1:7003 to
127.0.0.1:7000 Adding replica 127.0.0.1:7004 to 127.0.0.1:7001 Adding replica
127.0.0.1:7005 to 127.0.0.1:7002 M: 043600424fc401d14a2f6602a5b690bf43441144
127.0.0.1:7000 slots:0-5460 (5461 slots) master M:
d89c1011fb29402aeed179113201b98eb6ff4a1c 127.0.0.1:7001 slots:5461-10922 (5462
slots) master M: fe7acf3f59751166f7ed8d7cf1f90e8dbaac35b4 127.0.0.1:7002
slots:10923-16383 (5461 slots) master S:
8f9226923a030e6213377aeee225b508b970404f 127.0.0.1:7003 replicates
043600424fc401d14a2f6602a5b690bf43441144 S:
8112b942c00e9e00bbc329da801274fc953847c6 127.0.0.1:7004 replicates
d89c1011fb29402aeed179113201b98eb6ff4a1c S:
a14bafac7cfd1160564aa1f3362d03203ec9cae8 127.0.0.1:7005 replicates
fe7acf3f59751166f7ed8d7cf1f90e8dbaac35b4 Can I set the above configuration?
(type 'yes' to accept): yes >>> Nodes configuration updated >>> Assign a
different config epoch to each node >>> Sending CLUSTER MEET messages to join
the cluster Waiting for the cluster to join... >>> Performing Cluster Check
(using node 127.0.0.1:7000) M: 043600424fc401d14a2f6602a5b690bf43441144
127.0.0.1:7000 slots:0-5460 (5461 slots) master 1 additional replica(s) M:
d89c1011fb29402aeed179113201b98eb6ff4a1c 127.0.0.1:7001 slots:5461-10922 (5462
slots) master 1 additional replica(s) S:
8f9226923a030e6213377aeee225b508b970404f 127.0.0.1:7003 slots: (0 slots) slave
replicates 043600424fc401d14a2f6602a5b690bf43441144 M:
fe7acf3f59751166f7ed8d7cf1f90e8dbaac35b4 127.0.0.1:7002 slots:10923-16383 (5461
slots) master 1 additional replica(s) S:
a14bafac7cfd1160564aa1f3362d03203ec9cae8 127.0.0.1:7005 slots: (0 slots) slave
replicates fe7acf3f59751166f7ed8d7cf1f90e8dbaac35b4 S:
8112b942c00e9e00bbc329da801274fc953847c6 127.0.0.1:7004 slots: (0 slots) slave
replicates d89c1011fb29402aeed179113201b98eb6ff4a1c [OK] All nodes agree about
slots configuration. >>> Check for open slots... >>> Check slots coverage...
[OK] All 16384 slots covered.
gem install redis出现的问题：

问题1：     ERROR: Loading command: install (LoadError) cannot load such file --
zlib     ERROR: While executing gem ... (NoMethodError)     undefined method
`invoke_with_build_args' for nil:NilClass 解决方案： 1. 安装zlib库     yum install
zlib-devel 2. 集成zlib到ruby环境     # 进入ruby源码文件夹 ，安装ruby自身提供的zlib包     cd ext/zlib
    ruby ./extconf.rb     make && make install
    如果make时会爆出错误：没有规则可以创建“zlib.o”需要的目标“/include/ruby.h”。 停止//make:*** No rule
to make target `/include/ruby.h', needed by `zlib.o'. Stop
    则修改Makefile文件添加变量top_srcdir= ../../问题2：     ERROR: While executing gem ...
(Gem::Exception)     Unable to require openssl, install OpenSSL and rebuild
Ruby (preferred) or use non-HTTPS sources 解决方案： 1. 安装openssl库     yum install
openssl-devel 2. 集成openssl到ruby环境     # 进入ruby源码文件夹 ，安装ruby自身提供的zlib包     cd
ext/openssl     ruby ./extconf.rb     make && make install
    如果make时会爆出错误：没有规则可以创建“openssl.o”需要的目标“/include/ruby.h”。 停止//make:*** No
rule to make target `/include/ruby.h', needed by `openssl.o'. Stop
    则修改Makefile文件添加变量top_srcdir= ../../redis源码make是出现问题：
问题3： 出现致命错误：jemalloc/jemalloc.h：没有那个文件或目录 解决方案： make MALLOC=libc

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