我在服务器上运行了一个mysql import mysql dummyctrad <dumpfile.sql,它需要很长时间才能完成.转储文件大约是5G.服务器是Centos 6,内存= 16G和8核处理器,mysql v 5.7 x64-

这些正常的消息/状态是"等待表刷新"和消息 InnoDB: page_cleaner: 1000ms intended loop took 4013ms. The settings might not be optimal

mysql日志内容

2016-12-13T10:51:39.909382Z 0 [Note] InnoDB: page_cleaner: 1000ms intended loop took 4013ms. The settings might not be optimal. (flushed=1438 and evicted=0, during the time.)
2016-12-13T10:53:01.170388Z 0 [Note] InnoDB: page_cleaner: 1000ms intended loop took 4055ms. The settings might not be optimal. (flushed=1412 and evicted=0, during the time.)
2016-12-13T11:07:11.728812Z 0 [Note] InnoDB: page_cleaner: 1000ms intended loop took 4008ms. The …

如何显示所有会话变量？我知道可以使用变量访问request.session['variable']但我想知道是否有其他变量由其他人设置或在用户登录或类似的其他事件期间自动设置.

我在ubuntu 14.04 LTS上新安装了jenkins v 2.36.在安装过程中,jenkins安装了除管道之外的所有插件,并且在安装过程中卡住了.之后我重新启动了jenkins, service jenkins restart并且能够创建新的管理用户,这是jenkins仪表板上的错误屏幕截图,正确的按钮不能解决此错误.我该怎么做才能解决这个错误？

错误是

There are dependency errors loading some plugins:
Pipeline: Stage View Plugin v2.4
pipeline-rest-api v2.4 is missing. To fix, install v2.4 or later.
Pipeline v2.4
Pipeline: Stage View Plugin v2.4 failed to load. Fix this plugin first.

我是YAML和ansible的新手,我很困惑哪一行是关键,哪一行是列表.例如,在下面的剧本中,似乎" - "代表一个列表项.

---
- hosts: all
  gather_facts: no
  sudo: yes
  tasks:
  - name: Ensure NTP is installed.
    yum: name=ntp state=present
  - name: ensure ntp is running
    service: name=ntpd state=started enabled=yes

所以host是列表键,all是它的价值,但是gather_facts: no,sudo: yes并且task: ...也与密钥列表的字典- hosts？

当将上述playbook运行到yamllint.com时,我得到以下输出:

--- 
- 
  gather_facts: false
  hosts: all
  sudo: true
  tasks: 
    - 
      name: "Ensure NTP is installed."
      yum: "name=ntp state=present"
    - 
      name: "ensure ntp is running"
      service: "name=ntpd state=started enabled=yes"

OS=centos 6.7  [Dedicated server]
memory=15G      
cpu=Intel(R) Xeon(R) CPU E5-2403
mysql= V 5.1.73    

这是一个MyISAM表,包含大约500万行数据.在每5-6分钟插入大约3000个用户的数据(例如上传和下载速率,会话状态等).

表信息:描述"radacct"

my.cnf中

从mysql慢查询日志中获取大部分时间的查询之一如下

Query_time: 7.941773  Lock_time: 0.155912 Rows_sent: 1 Rows_examined: 5377
use freeradius;
SET timestamp=1461582118;
SELECT sum(acctinputoctets) as upload,
       sum(acctoutputoctets) as     download
    FROM radacct a 
    INNER JOIN (SELECT acctuniqueid, MIN( radacctid )     radacctid 
                   FROM radacct 
                   WHERE username='batman215'
                     and acctstarttime  between '2016-02-03 12:10:47'
                                            and '2016-04-25 16:46:01' 
                   GROUP BY   acctuniqueid) b 
        ON a.acctuniqueid = b.acctuniqueid 
       AND a.radacctid =    b.radacctid;

解释查询输出

当有许多用户试图查看其消耗的带宽时,由于高负载和IO,服务器无法满足请求.我有什么办法可以进一步优化数据库吗？

表"radacct"的索引

不使用\ G解释查询

谢谢

下面是不使用最近创建的复合索引的更新查询/查询计划。解释表明，它不使用命名的复合索引radacctupdate，我认为这将使更新查询更快。表上还有其他索引，这些索引可供其他查询使用。

EXPLAIN UPDATE radacct SET acctstoptime = '2017-01-08 11:52:24',
acctsessiontime = unix_timestamp('2017-01-08 11:52:24') - unix_timestamp(acctstarttime),
acctterminatecause = '', acctstopdelay = 14855646 
WHERE acctstoptime IS NULL AND
nasipaddress = '102.34.56.234' AND acctstarttime <= '2017-01-08 11:52:24';

************* 1. row ***********
           id: 1
  select_type: SIMPLE
        table: radacct
         type: range
possible_keys: acctstarttime,acctstoptime,nasipaddress,radacctupdate
          key: nasipaddress
      key_len: 17
          ref: const
         rows: 94
        Extra: Using where; Using MRR

下面是show index from <table>输出

+---------+------------+-----------------+--------------+-----------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table   | Non_unique | Key_name        | Seq_in_index | Column_name …

Jan 23 00:46:24 portal postfix/smtp[31481]: 1B1653FEA1: to=<wanted1918_ke@yahoo.com>, relay=mta5.am0.yahoodns.net[98.138.112.35]:25, delay=5.4, delays=0.02/3.2/0.97/1.1, dsn=5.0.0, status=bounced (host mta5.am0.yahoodns.net[98.138.112.35] said: 554 delivery error: dd This user doesn't have a yahoo.com account (wanted1918_ke@yahoo.com) [0] - mta1321.mail.ne1.yahoo.com (in reply to end of DATA command))
Jan 23 00:46:24 portal postfix/smtp[31539]: AF40C3FE99: to=<devi_joshi@yahoo.com>, relay=mta7.am0.yahoodns.net[98.136.217.202]:25, delay=5.9, delays=0.01/3.1/0.99/1.8, dsn=5.0.0, status=bounced (host mta7.am0.yahoodns.net[98.136.217.202] said: 554 delivery error: dd This user doesn't have a yahoo.com account (devi_joshi@yahoo.com) [0] - mta1397.mail.gq1.yahoo.com (in reply to end of DATA command))

从上面的maillog我想提取括在角括号之间的电子邮件地址,< ... >例如.to=<wanted1918_ke@yahoo.com> …

我想打印/回显或重定向下面的行到一些文件

phone: "3434343"
name: "jack"

phone: "9876735"
name: "john"

phone: "3434343"
name: "Mack"


...multiple emptylines ...


phone: "9876735"
name: "doe"

phone: "3434343"
name: "tack"

所需的输出线是: -

phone: "3434343" name: "jack"
phone: "9876735" name: "john"

 ...

以下是我写的内容

cat /tmp/sip_summary2.log | while  read LINE; 
do
echo $LINE | grep '^$' > /dev/null
    if [ $? -eq 0 ]
        then
      echo " " >> /tmp/tempsip.log 
    else
      printf "%s " "$LINE" >> /tmp/tempsip.log
    fi
done

这有更好或更清洁的替代品吗？

下面是文件的一部分,其中列出了以空白换行符分隔的zimbra帐户(500+)

cn: Jack 
displayName: Jack Johnson
givenName: Jack
sn: johnson
zimbraMailDeliveryAddress: Jack@example.com

cn: james ryan
displayName: James Ryan
givenName: James
sn: Ryan
zimbraMailDeliveryAddress: James@example.com

....

我想让文件包含如下内容,以便我可以使用它将它们导入新服务器 zmprove

cn: Jack displayName: Jack Johnson givenName: Jack sn: johnson zimbraMailDeliveryAddress: Jack@example.com
cn: james ryan displayName: James Ryan givenName: James sn: Ryan zimbraMailDeliveryAddress: James@example.com

我尝试编写脚本而不删除新行,但到目前为止无法提取

for line in `cat /tmp/account3.txt`;
do
    echo $line | grep "zimbraMailDeliveryAddress:" > /dev/null
    RESULT=$?

        if [ $RESULT -eq 0 ];  then 
    email=`echo $line | cut -d' ' -f2`  > …

我正在关注 trydjango: coding for enterpreneurs 的 django 教程系列，并且对 django 形式的“模型”和“字段”的作用感到困惑。

模型.py

    from django.db import models
    # Create your models here.
    class SignUp(models.Model):
        email=models.EmailField()
        full_name=models.CharField(max_length=55, blank=True, null=True)
        timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)
        updated=models.DateTimeField(auto_now_add=False, auto_now=True)

        def __unicode__(self):
            return self.email

表格.py

    from django import forms
    from .models import SignUp

    class SignUpForm(forms.ModelForm):
        class Meta:
            model=SignUp   # ?
            fields=['full_name','email']  # ?

        def clean_email(self):
            email=self.cleaned_data.get('email')
            email_base,provider=email.split("@")
            domain,extension=provider.split(".")
            if not domain == 'USC':
                raise forms.ValidationError("Please make sure you use your USC email")
            if not extension == "edu":
                raise …

Django 版本=1.8，IDE=pycharm，python 2.7

我有一个搜索表单，我想根据与产品标题或产品描述或产品价格匹配的字符串在模型中搜索和列出项目（“产品”）。

下面是我在 views.py 中的“searchitems”部分。我也很困惑下面的行在 get_queryset 函数中做了什么。干杯

   qs = super(ProductListView, self).get_queryset(*args,**kwargs)

#

# Search inside model function
def get_queryset(self, *args, **kwargs):
    qs = super(ProductListView, self).get_queryset(*args,**kwargs)
    query = self.request.GET.get("q")
    if query:
        qs = self.model.objects.filter(

            Q(title__icontains=query) |
            Q(description__icontains=query) |
            Q(price=query)
        )
    return qs

class ProductListView(ListView):
    model = Product
    queryset=Product.objects.all()  #no need to define this as it is a default
    def get_context_data(self, *args, **kwargs):
        context = super(ProductListView, self).get_context_data(*args, **kwargs)
        return context

下面是models.py

    from django.db import models
    from django.core.urlresolvers import reverse
    from …