使用Docker安裝部署Redis Cluster叢集
阿新 • • 發佈：2018-12-23
本文主要展示Redis Cluster的部署步驟。
1準備階段：
Dockerfile檔案內容
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檔案內容
port 7000 ##每個容器的埠設定成不一樣 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目錄下面各有一個redis.conf，除了port不一致，其他都一致。
2、部署階段：
[[email protected] home]# pwd
/home
[[email protected] 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
[ gem install redis出現的問題：
問題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
解決方案：
1. 安裝zlib庫
yum install zlib-devel
2. 整合zlib到ruby環境
# 進入ruby原始碼資料夾 ，安裝ruby自身提供的zlib包
cd ext/zlib
ruby ./extconf.rb
make && make install
如果make時會爆出錯誤：沒有規則可以建立“zlib.o”需要的目標“/include/ruby.h”。 停止//make:*** No rule to make target `/include/ruby.h', needed by `zlib.o'. Stop
則修改Makefile檔案新增變數top_srcdir= ../../問題2：
ERROR: While executing gem ... (Gem::Exception)
Unable to require openssl, install OpenSSL and rebuild Ruby (preferred) or use non-HTTPS sources
解決方案：
1. 安裝openssl庫
yum install openssl-devel
2. 整合openssl到ruby環境
# 進入ruby原始碼資料夾 ，安裝ruby自身提供的zlib包
cd ext/openssl
ruby ./extconf.rb
make && make install
如果make時會爆出錯誤：沒有規則可以建立“openssl.o”需要的目標“/include/ruby.h”。 停止//make:*** No rule to make target `/include/ruby.h', needed by `openssl.o'. Stop
則修改Makefile檔案新增變數top_srcdir= ../../問題3：
出現致命錯誤：jemalloc/jemalloc.h：沒有那個檔案或目錄
解決方案：
make MALLOC=libc