rails 自建 task - 檢查RMAN備份結果
$ vi lib/tasks/notify.rake
require 'net/ssh'
require 'net/sftp'
def notify_rman(mails,result)
htmlopen = %Q{<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body topmargin="10" leftmargin="10" marginheight="0" marginwidth="0" bgcolor="#e0ffff" text="#000000">
<table height="23" width="100%" border="0" cellSpacing="0" cellPadding="0" bgcolor="#4a6bad">
<tr>
<td align="left" style="font-family: Verdana, Arial; font-size:9pt;color:#f2f8ff">檢查RMAN備份結果(#{Time.now.strftime("%Y-%m-%d")})</td>
<td align="right" style="font-family: Verdana, Arial; font-size:9pt;color:#f2f8ff">
</td>
</tr>
</table>
<center>
<table bgcolor="#f2f8ff" border="1" width="100%" style="border-collapse: collapse;font-size:12px" bordercolor="#666699">
<tr>
<th>NO</th>
<th>主機IP</th>
<th>資料庫用途</th>
<th>備份結果</th>
<th align="left">檢查日誌信息</th>
</tr>}
htmlclose = %Q{</table>
</center>
</body>
</html>}
table = ''
i = 0
result.each do |row|
i += 1
if row[:data] =~ /successfully/
status = "成功"
bgcolor = "#f2f8ff"
else
status = "失敗"
bgcolor = "#ffffe0"
end
#body << "#{row[:ip]} : #{row[:data]}"
table += "<tr><td bgcolor='#{bgcolor}'> #{i}</td>
<td bgcolor='#{bgcolor}'>#{row[:ip]}</td>
<td bgcolor='#{bgcolor}'>#{row[:notes]}</td>
<td bgcolor='#{bgcolor}'>#{status}</td>
<td bgcolor='#{bgcolor}'>#{row[:data]}</td></tr>"
end
table += "<tr><td colspan='4'><a href='http://172.18.60.39/oms' >點此登錄主機監控網站查看更多RMAN備份記錄</a></td></tr>"
#body = %Q{ #{result.inspect}}
html_body = %{ #{htmlopen} #{table} #{htmlclose}}
Pony.mail(
:to => mails,
:from => 'DBA<[email protected]>',
#:cc => 'Jamie Kao<[email protected]>',
:subject => '[Oracle主機監控網站 ] 檢查RMAN備份結果',
:html_body => html_body,
:via => :smtp, :via_options => {
:address => 'email.pyzs.com.cn',
:port => 25,
:enable_starttls_auto => true,
:user_name => 'username',
:password => 'password',
:authentication => :login,
:domain => "localhost.localdomain" # the HELO domain provided by the client to the server
})
end
namespace :notify do
desc "Notify RMAN log"
task :rmanlog do
db = Sequel.connect('oracle://netzke_demo:[email protected]:1521/test')
sql = "select t.id,t.ip_address ip,t.notes,t.oracle pwd,t.rman_mk mk,t.rman_log logfile
from hosts t
where t.rman_mk = '1' order by t.ip_address"
result = []
db[sql].each do |row|
ssh_command = "tail -2 #{row[:logfile]}"
output = ''
Net::SSH.start(row[:ip], 'oracle', {:password => row[:pwd]}) do |ssh|
#@log.info "ssh session open"
# ssh to client
channel = ssh.open_channel do |ch|
#@log.info "executing '#{ssh_command}'"
ch.exec ssh_command do |ch, success|
unless success
#@log.info "ssh command failed"
raise "could not execute command: '#{ssh_command}'"
end
# "on_data" is called when the process writes something to stdout
ch.on_data do |c, data|
output += data
#@log.info "#{row[:ip]}: #{data}"
end
# "on_extended_data" is called when the process writes something to stderr
ch.on_extended_data do |c, type, data|
output += data
#@log.info "got stderr: #{data}"
end
ch.on_request "exit-status" do |c, data|
#@log.info "process terminated with exit status: #{data.read_long.to_s}"
end
ch.on_close #{ @log.info "channel closed!" }
end
end
# channel.wait
#@log.info "ssh channel done"
end
result << {:ip => row[:ip], :notes => row[:notes], :data => output}
end
mails = ['WHZ<[email protected]>', 'LJP<[email protected]>', 'LCL<[email protected]>', 'ZSH<[email protected]>', 'CH<[email protected]>'
]
#mails = ['WHZ<[email protected]>']
notify_rman(mails,result)
end
end
$ rake notify:rmanlog
常見問題:
1.不能連接被監控的主機,報錯:no route to host