在使用ruby脚本安装Redis集群时，需要先安装Ruby语言环境和redis插件，但是安装redis插件时遇到以下报错，下面记录一下解决过程。
因为执行Ruby脚本需要Ruby语言环境，所以首先安装Ruby语言环境和Ruby的包管理器Gems。
然后使用gem安装Redis和Ruby的接口。
RubyGems 是 Ruby 的一个包管理器，它提供一个分发 Ruby 程序和库的标准格式，还提供一个管理程序包安装的工具。
RubyGems 旨在方便地管理 gem 安装的工具，以及用于分发 gem 的服务器。这类似于 Ubuntu 下的apt-get, Centos 的 yum，Python 的 pip。
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原文链接：https://blog.csdn.net/qq_35209838/java/article/details/86307469
安装Ruby和Redis的接口时
报错
[root@localhost ruby-2.2.7]# gem install redis ERROR: Loading command: install (LoadError) cannot load such file -- zlib ERROR: While executing gem ... (NoMethodError) undefined method `invoke_with_build_args' for nil:NilClass
报错原因
缺少zlib库依赖
yum install zlib-devel
集成zlib库到Ruby环境
[root@localhost ruby-2.2.7]# pwd /root/ruby-2.2.7 [root@localhost ruby-2.2.7]# cd ext/zlib/ [root@localhost zlib]# ls depend extconf.rb Makefile mkmf.log zlib.c [root@localhost zlib]# ruby extconf.rb checking for deflateReset() in -lz... yes checking for zlib.h... yes checking for crc32_combine() in zlib.h... yes checking for adler32_combine() in zlib.h... yes checking for z_crc_t in zlib.h... yes creating Makefile [root@localhost zlib]# make compiling zlib.c linking shared-object zlib.so [root@localhost zlib]# [root@localhost zlib]# make install /usr/bin/install -c -m 0755 zlib.so /usr/local/ruby-2.2.7/lib/ruby/site_ruby/2.2.0/x86_64-linux [root@localhost zlib]#
缺少openssl库
报错信息
[root@localhost zlib]# gem install redis
ERROR: While executing gem ... (Gem::Exception)
Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources
使用yum安全openssl库，不能用yum install openssl，在ruby extconf.rb时会提示找不到ssl.h文件
[root@localhost zlib]# yum install openssl-devel
执行以下操作
1 /root/ruby-2.2.7/ext/openssl 2 [root@localhost openssl]# ruby extconf.rb 3 checking for t_open() in -lnsl... no 4 checking for socket() in -lsocket... no 5 checking for assert.h... yes 6 checking for openssl/ssl.h... yes 7 checking for openssl/conf_api.h... yes 8 checking for SSL_library_init() in openssl/ssl.h with -Werror=deprecated-declarations... yes 9 checking for openssl/ssl.h... yes 10 checking for ERR_peek_last_error()... yes 11 checking for ASN1_put_eoc()... yes 12 checking for BN_mod_add()... yes 13 checking for BN_mod_sqr()... yes 14 checking for BN_mod_sub()... yes 15 checking for BN_pseudo_rand_range()... yes 16 checking for BN_rand_range()... yes 17 checking for CONF_get1_default_config_file()... yes 18 checking for EVP_CIPHER_CTX_copy()... yes 19 checking for EVP_CIPHER_CTX_set_padding()... yes 20 checking for EVP_CipherFinal_ex()... yes 21 checking for EVP_CipherInit_ex()... yes 22 checking for EVP_DigestFinal_ex()... yes 23 checking for EVP_DigestInit_ex()... yes 24 checking for EVP_MD_CTX_cleanup()... yes 25 checking for EVP_MD_CTX_create()... yes 26 checking for EVP_MD_CTX_destroy()... yes 27 checking for EVP_MD_CTX_init()... yes 28 checking for HMAC_CTX_cleanup()... yes 29 checking for HMAC_CTX_copy()... yes 30 checking for HMAC_CTX_init()... yes 31 checking for PEM_def_callback()... yes 32 checking for PKCS5_PBKDF2_HMAC()... yes 33 checking for PKCS5_PBKDF2_HMAC_SHA1()... yes 34 checking for RAND_egd()... yes 35 checking for X509V3_set_nconf()... yes 36 checking for X509V3_EXT_nconf_nid()... yes 37 checking for X509_CRL_add0_revoked()... yes 38 checking for X509_CRL_set_issuer_name()... yes 39 checking for X509_CRL_set_version()... yes 40 checking for X509_CRL_sort()... yes 41 checking for X509_NAME_hash_old()... yes 42 checking for X509_STORE_get_ex_data()... no 43 checking for X509_STORE_set_ex_data()... no 44 checking for OBJ_NAME_do_all_sorted()... yes 45 checking for SSL_SESSION_get_id()... yes 46 checking for SSL_SESSION_cmp()... no 47 checking for OPENSSL_cleanse()... yes 48 checking for SSLv2_method()... yes 49 checking for SSLv2_server_method()... yes 50 checking for SSLv2_client_method()... yes 51 checking for SSLv3_method()... yes 52 checking for SSLv3_server_method()... yes 53 checking for SSLv3_client_method()... yes 54 checking for TLSv1_1_method()... yes 55 checking for TLSv1_1_server_method()... yes 56 checking for TLSv1_1_client_method()... yes 57 checking for TLSv1_2_method()... yes 58 checking for TLSv1_2_server_method()... yes 59 checking for TLSv1_2_client_method()... yes 60 checking for SSL_CTX_set_next_proto_select_cb()... yes 61 checking for SSL_set_tlsext_host_name() in openssl/ssl.h... no 62 checking for SSL_set_tlsext_host_name in openssl/ssl.h... yes 63 checking for openssl/engine.h... yes 64 checking for ENGINE_add()... yes 65 checking for ENGINE_load_builtin_engines()... yes 66 checking for ENGINE_load_openbsd_dev_crypto()... no 67 checking for ENGINE_get_digest()... yes 68 checking for ENGINE_get_cipher()... yes 69 checking for ENGINE_cleanup()... yes 70 checking for ENGINE_load_dynamic()... yes 71 checking for ENGINE_load_4758cca()... no 72 checking for ENGINE_load_aep()... no 73 checking for ENGINE_load_atalla()... no 74 checking for ENGINE_load_chil()... no 75 checking for ENGINE_load_cswift()... no 76 checking for ENGINE_load_nuron()... no 77 checking for ENGINE_load_sureware()... no 78 checking for ENGINE_load_ubsec()... no 79 checking for ENGINE_load_padlock()... no 80 checking for ENGINE_load_capi()... no 81 checking for ENGINE_load_gmp()... no 82 checking for ENGINE_load_gost()... no 83 checking for ENGINE_load_cryptodev()... yes 84 checking for ENGINE_load_aesni()... yes 85 checking for DH_generate_parameters_ex()... yes 86 checking for DSA_generate_parameters_ex()... yes 87 checking for RSA_generate_key_ex()... yes 88 checking for OpenSSL version is 0.9.7 or later... yes 89 checking for openssl/ocsp.h... yes 90 checking for CRYPTO_THREADID.ptr in openssl/crypto.h... yes 91 checking for EVP_CIPHER_CTX.flags in openssl/evp.h... yes 92 checking for EVP_CIPHER_CTX.engine in openssl/evp.h... yes 93 checking for X509_ATTRIBUTE.single in openssl/x509.h... yes 94 checking for OPENSSL_FIPS in openssl/opensslconf.h... yes 95 checking for EVP_CTRL_GCM_GET_TAG in openssl/evp.h... yes 96 creating extconf.h 97 creating Makefile
cd /root/ruby-2.2.7/ext/openssl [root@localhost openssl]# ruby extconf.rb checking for t_open() in -lnsl... no checking for socket() in -lsocket... no checking for assert.h... yes checking for openssl/ssl.h... yes checking for openssl/conf_api.h... yes checking for SSL_library_init() in openssl/ssl.h with -Werror=deprecated-declarations... yes checking for openssl/ssl.h... yes checking for ERR_peek_last_error()... yes checking for ASN1_put_eoc()... yes checking for BN_mod_add()... yes checking for BN_mod_sqr()... yes checking for BN_mod_sub()... yes checking for BN_pseudo_rand_range()... yes checking for BN_rand_range()... yes checking for CONF_get1_default_config_file()... yes checking for EVP_CIPHER_CTX_copy()... yes checking for EVP_CIPHER_CTX_set_padding()... yes checking for EVP_CipherFinal_ex()... yes checking for EVP_CipherInit_ex()... yes checking for EVP_DigestFinal_ex()... yes checking for EVP_DigestInit_ex()... yes checking for EVP_MD_CTX_cleanup()... yes checking for EVP_MD_CTX_create()... yes checking for EVP_MD_CTX_destroy()... yes checking for EVP_MD_CTX_init()... yes checking for HMAC_CTX_cleanup()... yes checking for HMAC_CTX_copy()... yes checking for HMAC_CTX_init()... yes checking for PEM_def_callback()... yes checking for PKCS5_PBKDF2_HMAC()... yes checking for PKCS5_PBKDF2_HMAC_SHA1()... yes checking for RAND_egd()... yes checking for X509V3_set_nconf()... yes checking for X509V3_EXT_nconf_nid()... yes checking for X509_CRL_add0_revoked()... yes checking for X509_CRL_set_issuer_name()... yes checking for X509_CRL_set_version()... yes checking for X509_CRL_sort()... yes checking for X509_NAME_hash_old()... yes checking for X509_STORE_get_ex_data()... no checking for X509_STORE_set_ex_data()... no checking for OBJ_NAME_do_all_sorted()... yes checking for SSL_SESSION_get_id()... yes checking for SSL_SESSION_cmp()... no checking for OPENSSL_cleanse()... yes checking for SSLv2_method()... yes checking for SSLv2_server_method()... yes checking for SSLv2_client_method()... yes checking for SSLv3_method()... yes checking for SSLv3_server_method()... yes checking for SSLv3_client_method()... yes checking for TLSv1_1_method()... yes checking for TLSv1_1_server_method()... yes checking for TLSv1_1_client_method()... yes checking for TLSv1_2_method()... yes checking for TLSv1_2_server_method()... yes checking for TLSv1_2_client_method()... yes checking for SSL_CTX_set_next_proto_select_cb()... yes checking for SSL_set_tlsext_host_name() in openssl/ssl.h... no checking for SSL_set_tlsext_host_name in openssl/ssl.h... yes checking for openssl/engine.h... yes checking for ENGINE_add()... yes checking for ENGINE_load_builtin_engines()... yes checking for ENGINE_load_openbsd_dev_crypto()... no checking for ENGINE_get_digest()... yes checking for ENGINE_get_cipher()... yes checking for ENGINE_cleanup()... yes checking for ENGINE_load_dynamic()... yes checking for ENGINE_load_4758cca()... no checking for ENGINE_load_aep()... no checking for ENGINE_load_atalla()... no checking for ENGINE_load_chil()... no checking for ENGINE_load_cswift()... no checking for ENGINE_load_nuron()... no checking for ENGINE_load_sureware()... no checking for ENGINE_load_ubsec()... no checking for ENGINE_load_padlock()... no checking for ENGINE_load_capi()... no checking for ENGINE_load_gmp()... no checking for ENGINE_load_gost()... no checking for ENGINE_load_cryptodev()... yes checking for ENGINE_load_aesni()... yes checking for DH_generate_parameters_ex()... yes checking for DSA_generate_parameters_ex()... yes checking for RSA_generate_key_ex()... yes checking for OpenSSL version is 0.9.7 or later... yes checking for openssl/ocsp.h... yes checking for CRYPTO_THREADID.ptr in openssl/crypto.h... yes checking for EVP_CIPHER_CTX.flags in openssl/evp.h... yes checking for EVP_CIPHER_CTX.engine in openssl/evp.h... yes checking for X509_ATTRIBUTE.single in openssl/x509.h... yes checking for OPENSSL_FIPS in openssl/opensslconf.h... yes checking for EVP_CTRL_GCM_GET_TAG in openssl/evp.h... yes creating extconf.h creating Makefile