1st Exam Questions
Draw the system application architecture diagram
Write the difference between LVS and nginx The
current database service processing speed is slow, what do you think may be the cause, and explain the corresponding solutions,
talk about the storage engine you know, when you build the table How to determine the storage engine for the
table. What are the disadvantages of a single table that is too large and how to solve it.
Give you 50 servers and explain how to design
your topology. If you are a database administrator, explain how you can add authorized users to the server.
If you are Database administrator, explain how you back up your data.
What are the current common database software? When building a database cluster, how do you choose which software
mysql database service to use, and what is the role of the value type width?
Before configuring mysql master-slave synchronization, how to ensure that the data in the master database and the slave database are consistent
. What risks do you think the information has in the transmission? When
monitoring a server, what resources do you think should be monitored? How to know
the difference between symmetric encryption and asymmetric encryption
Is the website service running on a host?
How do ordinary users of the system have root privileges, and under what circumstances are there
openstack components?
When configuring the httpd server, how to quickly add a new virtual host
What are the commands to kill the process?
What is the principle of mysql
Note: The highest and lowest scores will be assessed for each assignment. Small partners who have performed well many times will be rewarded, and those who have the lowest score each time will be punished.
What do the ELK test questions on the 2nd mean?
What
are the characteristics of elasticsearch What are the characteristics and functions of
kibana What are the characteristics and functions of logstash What
can ELK do?
What is ELK mainly used for during your use?
What are the clusters, nodes, documents, types, and indexes in elasticSearch? What are shards in elasticsearch
?
What is the maximum amount of data processed by es bulk at one time What is
the automatic discovery mechanism of es?
What are
the security plugins, alarm plugins, management and query plugins of es, which are the
ELK mail plugins, which
logstash input plugins and output plugins handle, what kind of data
nginx optimization and how to do
how many nodes does ansible use?
Use ansible playbook What
have
you
written, which zabbix has what monitoring items Python have you used, which modules have you written, which shell scripts have you written
3 day exam questions,
what projects
have you deployed with docker, what are the basic commands commonly used by docker to write 15
docker network modes?
What is the difference between docker and virtual machine, what is the
traditional online process?
What is the difference between the three nginx lvs haproxy
Redis persistence Which way do you use
? What is the difference between the two ways of redis persistence?
Which way do you use for redis cluster?
What protocol does the keepalived server use? What are the
LVS algorithms ? What are the LVS algorithms that you use? Which one?
What is the difference between 301 and 302, what
is the situation of 502, and what is the solution
? What is the principle of MySQL master and slave?
How to achieve MySQL data backup How
large is the amount of backed up data
How to ensure the reliability and integrity of the backed up data
What version has
gitlab updated to which version of logstash has two working modes? What is
the
most feared thing about centos system tuning and how to do it? Doing nothing, but also comforting oneself is ordinary and precious!
On the 4th, the
DNS schematic diagram of the exam questions on the 4th,
the role of DNS polling?
What are the meanings of recursive query and iterative query?
In the current directory and subdirectories, look for txt files starting with capital letters.
Search for all files that have been accessed in the last seven days.
Search for files
that have been accessed more than seven days. What are the advantages of
nginx over apache? How to handle the request of
nginx forward proxy and reverse proxy What do they mean
? What is a virtual host
? Which modules of
nginx have you used ? Check whether the configuration file is correct. How to check
the command of
nginx to reload the configuration file. What does nginx status code 499 mean?
What are the possible reasons for the nginx status code 502 error? What is the difference between fastcgi and cgi in
nginx tuning ? What are the algorithms for nginx load balancing? What should I do if the session is out of sync when using nginx? How does nginx realize the anti-leech chain ? Why do dynamic and static separation? Questions on the 5th Exam questions on the 5th. Time flies. In the blink of an eye, halfway through the holiday, every question here has been an interview question that your brothers and sisters encountered during the interview. Take it seriously.
How to set the
MySQL storage engine for slow query MySQL What
are the differences between the two common MySQL engines
? What are the four isolation levels defined by the SQL standard?
What are the backup methods or solutions for MySQL backup?
What are the parameters of zabbix monitoring database monitoring?
How does the MySQL master-slave consistency check do
truncate delete drop Differences
in the implementation principle or mechanism
of redis
The purpose of $? in your company's redis architecture shell script is to do What
How to debug the shell script
MySQL is out of
synchronization The reason why MySQL master and slave are out of synchronization
How to modify the maximum file handle limit of Linux How to
write shell scripts to monitor the MySQL master and slave ideas
Write shell scripts to monitor whether all IPs are alive or not.
Write shell scripts to prevent The idea of ddos attack
Talk about the one thing you are most proud of in your work. Talk about
the three most difficult things
you have encountered in your work. Living in the present, your hard work will not be wasted!
6th Exam Questions
Where is your server located?
What products have
Alibaba Cloud used? SLB is based on several layers of load balancing.
Why do log cutting.
NGINX has several working modes, which
versions of tomcat are used and what
Redis is used for caching data in your company. What is the
company’s product? , How many registrations are there and
which modules
have been used in Python? What is the reason for your resignation? What do
you think about overtime? How do
you understand the position of operation and maintenance
? How do
you think about business trips? What is your salary structure?
You have five insurances and one housing fund. What
are the versions of
OpenStack delivered in what proportions. What are the components of OpenStack.
If you are hired, how do you plan to carry out your work
? What career plans
do you have for the future? What new technologies
do you usually learn? What technologies do you look at recently? Books, let’s talk about the name of the book on the
7th exam questions.
What is your company’s storage for
nginx log cutting and how do
you need to restart it during backup?
What optimizations have nginx made ? What optimizations have
been made on the newly installed system.
MySQL has three binlog formats. What do you recommend? The
database is slow to respond. How to query
MySQL After the data is deleted by mistake, what methods or methods have you tried to recover the data?
Three-way handshake, four waved hands principle
Memcached working principle
radi principle
Consistent hash algorithm function and principle
MySQL has too many sleep threads How to solve the
one-master and multiple-slave environment, the slave database is down, how do you recover?
What are the MySQL cluster and high-availability solutions, and which solutions have you used in your company?
iptables workflow and rule filtering order
iptables has several tables and links
which indicators should a web server monitor What
do daily inspections do?
raid10 raid5 raid1 What is the difference and what are the advantages?
Technologist blog Whose
8 day test have you followed?
Please briefly describe the difference between soft and hard links.
What are inodes and blocks? Please explain in brief and explain
how to use disk space. Concisely find out which file occupies too large a disk.
What does the -n -r parameter of the sed command mean?
If you purchase a hard disk, what processing needs to be done before the disk can be used normally.
Please tell the meaning of these symbols >>> 2> 2 >> #.… $ | &&
If the Linux server hard disk is 300G and the memory is 16G in the enterprise, how to partition the hard disk?
Resolve the concept of IP address, subnet mask, gateway address and port in the network.
Standard workflow for operation and maintenance personnel
Answer: Check before operation, backup before operation, perform operation process, confirm after operation, operating document writing
OSI seven-layer mode is
the difference between the seven-layer 301 and 302 jumps
What did the last company do?
What was the business of the previous company? What was the
growth of the database
? What work and responsibilities were you mainly responsible for in the previous company.
If you join the company, what can you bring to our company?
What is the most impressive failure you have dealt with? What is
your best technique? What do
you do in your daily work
and what else do you have to ask me?
If you want to see the answers to these questions: you can go to 51cto Academy to get me sharing with videos and also documents
: https://edu.51cto.com/sd/a021e