gem install redis报错解决办法

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redis-cluster安装需要通过gem install redis来安装相关依赖。否则报错。

通过gem install redis会报如下错误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

这是缺少zlib依赖，需要安装zlib库

还有一个错误2就是


   
   
    
    
     
     
      
      
     
     
     
     
      
      
       
       ERROR:  While executing gem ... (Gem::Exception)
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       Unable to require openssl, 
       
       install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources

提示缺少openssl库，这两个库可以通过yum安装，但是安装了需要集成到ruby中。

先解决错误一，解决办法分为两步：

一、安装zlib库，如果已经安装，跳过，直接进入第二步。

yum install zlib-devel

二、集成zlib库到ruby环境

cd /data/ruby-2.4.2
cd ext/zlib
ruby extconf.rb
//在操作下一步之前需要修改Makefile文件中的zlib.o: $(top_srcdir)/include/ruby.h,将$(top_srcdir)修改为../..如下
//zlib.o: ../../include/ruby.h
//这一步如果不修改，make时会爆出另外一个错误
//make:*** No rule to make target `/include/ruby.h', needed by `zlib.o'.  Stop
make && make install

另一个缺少openssl库的错误，可以用同样的问题解决。

一、安装openssl库，如果已经安装可以跳过，直接进入第二步。

yum install openssl-devel

不要只用yum install openssl来安装，否则会缺少pcre等相关库，执行ruby extconf.rb会提示找不到ssl.h文件。


   
   
    
    
     
     
      
      
     
     
     
     
      
      
       
       checking for t_open() in -lnsl... no
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       checking for socket() in -lsocket... no
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       checking for openssl/ssl.h... no

第二步、集成openssl库到ruby

cd /data/ruby-2.4.2 

cd ext/openssl 

ruby extconf.rb 

//同样修改Makefile中的$(top_srcdir)为../.. 

make && make install


   
   
    
    
     
     
      
      
     
     
     
     
      
      
       
       [root
       
       @node01 openssl]# make && make install
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling openssl_missing.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_asn1.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_bio.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_bn.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_cipher.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_config.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_digest.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_engine.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_hmac.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_ns_spki.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_ocsp.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkcs12.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkcs5.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkcs7.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkey.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkey_dh.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkey_dsa.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkey_ec.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_pkey_rsa.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_rand.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_ssl.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_ssl_session.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509attr.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509cert.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509crl.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509ext.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509name.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509req.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509revoked.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       compiling ossl_x509store.c
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       linking shared-object openssl.so
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       /usr/bin/install -c -m 
       
       0755 openssl.so /usr/local/lib/ruby/site_ruby/
       
       2.4.0/x86_64-linux
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       installing 
       
       default openssl libraries

成功之后，再次运行gem install redis，出现以下界面：


   
   
    
    
     
     
      
      
     
     
     
     
      
      
       
       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 redisafter 
       
       1 seconds
      
      
     
     
    
    
     
     
      
      
     
     
     
     
      
      
       
       1 gem installed

gem install redis安装成功。

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