每次运行 chef-client 时 Chef 创建 /service答案

【问题标题】：Chef creating /service every time chef-client is ran每次运行 chef-client 时 Chef 创建 /service
【发布时间】：2014-08-20 06:06:01
【问题描述】：

我有一个配方，它会在运行 chef-client 时创建 /service 并挂载它。但是，即使 /service 已经创建，chef 也会挂载它并将其添加到 fstab。我以为厨师会知道不要这样做。

#mkdir /service
directory node['storm-prep']['service']['dir'] do
  owner "root"
  group "root"
  mode 00755
  action :create
 recursive true
end

#Create /service
lvm_logical_volume node['storm-prep']['service']['name'] do
    group node['storm-prep']['volume-group']['name']
    size node['storm-prep']['service']['size']
    filesystem node['storm-prep']['filesystem']['type']
    mount_point #{node['storm-prep']['service']['dir']}
    action [:create]
end

#mount /service and add to fstab
mount node['storm-prep']['service']['dir'] do
    device node['storm-prep']['service']['device']
    fstype node['storm-prep']['filesystem']['type']
end

厨师客户端错误结束

014-08-19T16:19:31-05:00] FATAL: Mixlib::ShellOut::ShellCommandFailed: execute[mount /service and add to fstab] (storm-prep-cookbook::default line 41) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '32'
---- Begin output of echo '/dev/mapper/vg00-servicelv00  /service       ext4 defaults        0   0' >> /etc/fstab && mount /service ----
STDOUT: 
STDERR: mount: /dev/mapper/vg00-servicelv00 already mounted or /service busy
mount: according to mtab, /dev/mapper/vg00-servicelv00 is already mounted on /service
---- End output of echo '/dev/mapper/vg00-servicelv00  /service       ext4 defaults        0   0' >> /etc/fstab && mount /service ----
Ran echo '/dev/mapper/vg00-servicelv00  /service       ext4 defaults        0   0' >> /etc/fstab && mount /service returned 32

【问题讨论】：

标签： chef-infra

【解决方案1】：

您可以使用所谓的guard：not_if。像这样：

mount node['storm-prep']['service']['dir'] do
    device node['storm-prep']['service']['device']
    fstype node['storm-prep']['filesystem']['type']
    # Don't execute the action if "/service" exists
    not_if "grep '/service' /etc/fstab"
end

【讨论】：

您的问题不清楚。如果/service 存在，哪一步不应该发生？
是的，很抱歉。每次运行 Chef 客户端时，似乎都会将 /service 添加到 fstab，这不应该发生。 Chef 应该知道该服务已经挂载，不应再次添加。
您的意思是，如果您在编辑器中打开 fstab，您会发现厨师多次添加了 /service 条目？
是的，Chef 也会出错（Chef 客户端不会完成）。这可能有帮助吗？（添加到帖子中）
但是是的，在 chef-client 崩溃后，我去 fstab，它在那里多次

【解决方案2】：

解决办法是

#Create /service

mount_point #{node['storm-prep']['service']['dir']}

需要

#Create /service

mount_point node['storm-prep']['service']['dir']

并且整个#mount部分都可以删除

根本原因是 LVM 食谱存在大量问题和错误代码

【讨论】：