Redis集群搭建问题汇总

环境

centos7+redis3.2.12

问题一:redis requires Ruby version >= 2.2.2.

redis官方提供了redis-trib.rb工具,但是在使用之前 需要安装ruby,以及redis和ruby连接:

yum -y install ruby ruby-devel rubygems rpm-build

gem install redis

其中 gem install redis命令执行时出现了:

 redis requires Ruby version >= 2.2.2的报错,查了资料发现是Centos默认支持ruby到2.0.0,可gem 安装redis需要最低是2.2.2

解决办法是 先安装rvm,再把ruby版本提升至2.3.3

1.安装curl

sudo yum install curl

2. 安装RVM

curl -L get.rvm.io | bash -s stable 

注意这步,可能会继续报错

[root@localhost 19:45 ~]# curl -L get.rvm.io | bash -s stable

 % Total  % Received % Xferd Average Speed  Time  Time   Time Current

                 Dload Upload  Total  Spent  Left Speed

100 24090 100 24090  0   0 11517   0 0:00:02 0:00:02 --:--:-- 48276

Downloading https://github.com/rvm/rvm/archive/1.29.3.tar.gz

Downloading https://github.com/rvm/rvm/releases/download/1.29.3/1.29.3.tar.gz.asc

gpg: 于 2017年09月11日 星期一 05时59分21秒 JST 创建的签名,使用 RSA,钥匙号 BF04FF17

gpg: 无法检查签名:No public key

Warning, RVM 1.26.0 introduces signed releases and automated check of signatures when GPG software found. Assuming you trust Michal Papis import the mpapis public key (downloading the signatures).

GPG signature verification failed for '/usr/local/rvm/archives/rvm-1.29.3.tgz' - 'https://github.com/rvm/rvm/releases/download/1.29.3/1.29.3.tar.gz.asc'! Try to install GPG v2 and then fetch the public key:
  gpg2 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
or if it fails:
  command curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -
the key can be compared with:
  https://rvm.io/mpapis.asc
  https://keybase.io/mpapis
NOTE: GPG version 2.1.17 have a bug which cause failures during fetching keys from remote server. Please downgrade or upgrade to newer version (if available) or use the second method described above.
[root@localhost 19:45 ~]#

发现失败了,我们按照提示进行操作。

[root@localhost 19:45 ~]# curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -

gpg: 钥匙环‘/root/.gnupg/secring.gpg'已建立

gpg: /root/.gnupg/trustdb.gpg:建立了信任度数据库

gpg: 密钥 D39DC0E3:公钥“Michal Papis (RVM signing) <[email protected]>”已导入

gpg: 合计被处理的数量:1

gpg:      已导入:1 (RSA: 1)

gpg: 没有找到任何绝对信任的密钥

[root@localhost 19:45 ~]# curl -L get.rvm.io | bash -s stable

这时可能会发现其中一个can't download

出现这个提示

curl: (35) Peer reports incompatible or unsupported protocol version

查找原因是curl,nss版本低的原因,解决办法就是更新nss,curl。

yum update nss curl

成功后再执行

[root@localhost 19:45 ~]# curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -

gpg: 钥匙环‘/root/.gnupg/secring.gpg'已建立

gpg: /root/.gnupg/trustdb.gpg:建立了信任度数据库

gpg: 密钥 D39DC0E3:公钥“Michal Papis (RVM signing) <[email protected]>”已导入

gpg: 合计被处理的数量:1

gpg:      已导入:1 (RSA: 1)

gpg: 没有找到任何绝对信任的密钥

[root@localhost 19:45 ~]# curl -L get.rvm.io | bash -s stable

 % Total  % Received % Xferd Average Speed  Time  Time   Time Current

                 Dload Upload  Total  Spent  Left Speed

100 24090 100 24090  0   0  3763   0 0:00:06 0:00:06 --:--:-- 3763

Downloading https://github.com/rvm/rvm/archive/1.29.3.tar.gz

Downloading https://github.com/rvm/rvm/releases/download/1.29.3/1.29.3.tar.gz.asc

gpg: 于 2017年09月11日 星期一 05时59分21秒 JST 创建的签名,使用 RSA,钥匙号 BF04FF17

gpg: 完好的签名,来自于“Michal Papis (RVM signing) <[email protected]>”

gpg:        亦即“Michal Papis <[email protected]>”

gpg:        亦即“[jpeg image of size 5015]”

gpg: 警告:这把密钥未经受信任的签名认证!

gpg:    没有证据表明这个签名属于它所声称的持有者。

主钥指纹: 409B 6B17 96C2 7546 2A17 0311 3804 BB82 D39D C0E3

子钥指纹: 62C9 E5F4 DA30 0D94 AC36 166B E206 C29F BF04 FF17

GPG verified '/usr/local/rvm/archives/rvm-1.29.3.tgz'

Creating group 'rvm'

 

Installing RVM to /usr/local/rvm/

Installation of RVM in /usr/local/rvm/ is almost complete:

 

 * First you need to add all users that will be using rvm to 'rvm' group,

  and logout - login again, anyone using rvm will be operating with `umask u=rwx,g=rwx,o=rx`.

 

 * To start using RVM you need to run `source /etc/profile.d/rvm.sh`

  in all your open shell windows, in rare cases you need to reopen all shell windows.

[root@localhost 19:46 ~]

发现rvm已经安装成功了,为了让配置立即生效,我们需要用source命令导入rvm的配置文件。

3. 

source /usr/local/rvm/scripts/rvm

4. 查看rvm库中已知的ruby版本

rvm list known

5. 安装一个ruby版本

rvm install 2.3.3

6. 使用一个ruby版本

rvm use 2.3.3

7. 设置默认版本

rvm remove 2.0.0

8. 卸载一个已知版本

ruby --version

9. 再安装redis就可以了

gem install redis

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转载自www.cnblogs.com/shamo89/p/9862321.html