自动化运维工具-Ansible实战指南

最新推荐文章于 2025-04-17 07:26:59 发布

原创最新推荐文章于 2025-04-17 07:26:59 发布 · 816 阅读

17 ·

CC 4.0 BY-SA版权

文章标签：

#运维 #自动化 #ansible

程序员专栏收录该内容

742 篇文章

订阅专栏

[root@ansible ~]# ansible wsr -m file -a ‘path=/data/2339 state=directory’

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“gid”: 0,

“group”: “root”,

“mode”: “0755”,

“owner”: “root”,

“path”: “/data/2339”,

“size”: 6,

“state”: “directory”,

“uid”: 0

}

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“gid”: 0,

“group”: “root”,

“mode”: “0755”,

“owner”: “root”,

“path”: “/data/2339”,

“size”: 6,

“state”: “directory”,

“uid”: 0

}

创建链接文件

[root@ansible ~]# ansible wsr -m file -a ‘path=/data/2340 src=2339 state=link’

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“dest”: “/data/2340”,

“gid”: 0,

“group”: “root”,

“mode”: “0777”,

“owner”: “root”,

“size”: 4,

“src”: “2339”,

“state”: “link”,

“uid”: 0

}

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“dest”: “/data/2340”,

“gid”: 0,

“group”: “root”,

“mode”: “0777”,

“owner”: “root”,

“size”: 4,

“src”: “2339”,

“state”: “link”,

“uid”: 0

}

测试

[root@ansible ~]# ansible wsr -a ‘ls -l /data’

192.168.100.20 | CHANGED | rc=0 >>

total 32

-rw-rw-rw- 1 root root 13 Jul 10 11:32 2021710

-rw-r–r-- 1 root root 0 Jul 10 11:31 2021710.11427.2021-07-10@11:32:39~

drwxr-xr-x 2 root root 6 Jul 10 11:40 2339

lrwxrwxrwx 1 root root 4 Jul 10 11:42 2340 -> 2339

-rw-rw-rw- 1 root root 21 Jul 10 11:20 a.sh

-rw-r–r-- 1 root root 0 Jul 3 23:14 file1

-rw-r–r-- 1 root root 0 Jul 3 23:14 file2

-rw-r–r-- 1 root root 0 Jul 3 23:14 file3

-rw-r–r-- 1 root root 63 Jul 4 11:51 for1.conf

-rw-r–r-- 1 root root 267 Jul 4 12:06 for2.conf

-rw-r–r-- 1 root root 171 Jul 5 04:05 for3.conf

-rw-r–r-- 1 apache root 11753 Jul 10 03:21 httpd.conf

192.168.100.10 | CHANGED | rc=0 >>

total 32

-rw-rw-rw- 1 root root 13 Jul 10 11:32 2021710

-rw-r–r-- 1 root root 0 Jul 10 11:31 2021710.11493.2021-07-10@11:32:39~

drwxr-xr-x 2 root root 6 Jul 10 11:40 2339

lrwxrwxrwx 1 root root 4 Jul 10 11:42 2340 -> 2339

-rw-rw-rw- 1 root root 21 Jul 10 11:20 a.sh

-rw-r–r-- 1 root root 0 Jul 3 23:14 file1

-rw-r–r-- 1 root root 0 Jul 3 23:14 file2

-rw-r–r-- 1 root root 0 Jul 3 23:14 file3

-rw-r–r-- 1 root root 63 Jul 4 11:51 for1.conf

-rw-r–r-- 1 root root 267 Jul 4 12:06 for2.conf

-rw-r–r-- 1 root root 171 Jul 5 04:05 for3.conf

-rw-r–r-- 1 apache root 11753 Jul 10 03:21 httpd.conf

删除文件

只需把state改为absent即可

[root@ansible ~]# ansible wsr -m file -a ‘path=/data/2339 state=absent’

7 cron模块

**该模块适用于管理cron计划任务的。

其使用的语法跟我们的crontab文件中的语法一致**

day= #日应该运行的工作( 1-31, *, */2, )
hour= # 小时 ( 0-23, *, */2, )
minute= #分钟( 0-59, *, */2, )
month= # 月( 1-12, *, /2, )
weekday= # 周 ( 0-6 for Sunday-Saturday, )
job= #指明运行的命令是什么
name= #定时任务描述
reboot # 任务在重启时运行，不建议使用，建议使用special_time
special_time

#特殊的时间范围，参数：reboot（重启时），annually（每年），monthly（每月），weekly（每周），daily（每天），hourly（每小时）

state #指定状态，present表示添加定时任务，也是默认设置，absent表示删除定时任务
user # 以哪个用户的身份执行

[root@ansible ~]# ansible wsr -m cron -a ‘name=“echo words” minute=*/5 job=“echo hello world”’

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“envs”: [],

“jobs”: [

“warningcron”,

“None”,

“echo words”

]

}

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“envs”: [],

“jobs”: [

“warningcron”,

“None”,

“echo words”

]

}

测试结果

[root@ansible ~]# ansible wsr -a ‘crontab -l’

192.168.100.10 | CHANGED | rc=0 >>

#Ansible: warningcron

#* * * * 1,3,5 /usr/bin/wall FBI warning

#Ansible: None

#* * * * * /usr/bin/wall FBI warning

#Ansible: echo words

*/5 * * * * echo hello world

192.168.100.20 | CHANGED | rc=0 >>

#Ansible: warningcron

#* * * * 1,3,5 /usr/bin/wall FBI warning

#Ansible: None

#* * * * * /usr/bin/wall FBI warning

#Ansible: echo words

*/5 * * * * echo hello world

mission completely！！！

8 user模块

该模块主要是用来管理账户的

comment　　# 用户的描述信息
createhome　　# 是否创建家目录
force　　# 在使用state=absent时, 行为与userdel –force一致.
group　　# 指定基本组
groups　　# 指定附加组，如果指定为(groups=)表示删除所有组
home　　# 指定用户家目录
move_home　　# 如果设置为home=时, 试图将用户主目录移动到指定的目录
name　　# 指定用户名
non_unique　　# 该选项允许改变非唯一的用户ID值
password　　# 指定用户密码
remove　　# 在使用state=absent时, 行为是与userdel –remove一致
shell　　# 指定默认shell
state　　# 设置帐号状态，不指定为创建，指定值为absent表示删除
system　　# 当创建一个用户，设置这个用户是系统用户。这个设置不能更改现有用户
uid　　# 指定用户的uid

添加一个用户并指定 uid

[root@ansible ~]# ansible wsr -m user -a ‘name=zs uid=66666’

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“comment”: “”,

“create_home”: true,

“group”: 1005,

“home”: “/home/zs”,

“name”: “zs”,

“shell”: “/bin/bash”,

“state”: “present”,

“system”: false,

“uid”: 66666

}

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“comment”: “”,

“create_home”: true,

“group”: 1005,

“home”: “/home/zs”,

“name”: “zs”,

“shell”: “/bin/bash”,

“state”: “present”,

“system”: false,

“uid”: 66666

}

[root@ansible ~]# ansible wsr -m shell -a ‘getent passwd|grep zs’

192.168.100.10 | CHANGED | rc=0 >>

zs❌66666:1005::/home/zs:/bin/bash

192.168.100.20 | CHANGED | rc=0 >>

zs❌66666:1005::/home/zs:/bin/bash

删除用户

指定状态为absent即可

[root@ansible ~]# ansible wsr -m user -a ‘name=zs uid=66666 state=absent’

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“force”: false,

“name”: “zs”,

“remove”: false,

“state”: “absent”

}

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“force”: false,

“name”: “zs”,

“remove”: false,

“state”: “absent”

}

[root@ansible ~]# ansible wsr -m shell -a ‘getent passwd|grep zs’

192.168.100.10 | FAILED | rc=1 >>

non-zero return code

192.168.100.20 | FAILED | rc=1 >>

non-zero return code

9 group模块

该模块主要用于添加或删除组。

常用的选项如下：

gid=　　#设置组的GID号
name=　　#指定组的名称
state=　　#指定组的状态，默认为创建，设置值为absent为删除
system=　　#设置值为yes，表示创建为系统组

建立组并指定gid

[root@ansible ~]# ansible wsr -m group -a ‘name=ls gid=888888’

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“gid”: 888888,

“name”: “ls”,

“state”: “present”,

“system”: false

}

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“gid”: 888888,

“name”: “ls”,

“state”: “present”,

“system”: false

}

[root@ansible ~]# ansible wsr -m shell -a ‘cat /etc/group |grep 888888’

192.168.100.10 | CHANGED | rc=0 >>

ls❌888888:

192.168.100.20 | CHANGED | rc=0 >>

ls❌888888:

删除组

指定state为absent即可删除

[root@ansible ~]# ansible wsr -m group -a ‘name=ls state=absent’

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“name”: “ls”,

“state”: “absent”

}

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“name”: “ls”,

“state”: “absent”

}

10 script模块

该模块用于将本机的脚本在被管理端的机器上运行。

[root@ansible tmp]# cat df.sh

#!/bin/bash

date >> /tmp/disk_total.log

df -lh >> /tmp/disk_total.log

[root@ansible tmp]# ansible wsr -m script -a ‘/tmp/df.sh’

192.168.100.10 | CHANGED => {

“changed”: true,

“rc”: 0,

“stderr”: “Shared connection to 192.168.100.10 closed.\r\n”,

“stderr_lines”: [

“Shared connection to 192.168.100.10 closed.”

“stdout”: “”,

“stdout_lines”: []

}

192.168.100.20 | CHANGED => {

“changed”: true,

“rc”: 0,

“stderr”: “Shared connection to 192.168.100.20 closed.\r\n”,

“stderr_lines”: [

“Shared connection to 192.168.100.20 closed.”

“stdout”: “”,

“stdout_lines”: []

}

测试

[root@ansible tmp]# ansible wsr -a ‘cat /tmp/disk_total.log’

192.168.100.10 | CHANGED | rc=0 >>

Sat Jul 10 21:24:51 EDT 2021

Filesystem Size Used Avail Use% Mounted on

devtmpfs 475M 0 475M 0% /dev

tmpfs 487M 0 487M 0% /dev/shm

tmpfs 487M 7.6M 479M 2% /run

tmpfs 487M 0 487M 0% /sys/fs/cgroup

/dev/mapper/centos-root 8.0G 1.5G 6.6G 18% /

/dev/sr0 4.4G 4.4G 0 100% /mnt/centos

/dev/sda1 1014M 136M 879M 14% /boot

tmpfs 98M 0 98M 0% /run/user/0

192.168.100.20 | CHANGED | rc=0 >>

Sat Jul 10 21:24:51 EDT 2021

Filesystem Size Used Avail Use% Mounted on

devtmpfs 475M 0 475M 0% /dev

tmpfs 487M 0 487M 0% /dev/shm

tmpfs 487M 7.6M 479M 2% /run

tmpfs 487M 0 487M 0% /sys/fs/cgroup

/dev/mapper/centos-root 8.0G 1.5G 6.6G 18% /

/dev/sr0 4.4G 4.4G 0 100% /mnt/centos

/dev/sda1 1014M 136M 879M 14% /boot

tmpfs 98M 0 98M 0% /run/user/0

11 setup模块

通过调用facts(facts就是变量，内建变量)组件来收集主机信息，如vcpu个数，内存大小等…

可以使用filter来查看指定信息,调用后返回很多对应主机的信息，在后面的操作中可以根据不同的信息来做不同的操作

如redhat系列用yum安装，而debian系列用apt来安装软件。

[root@ansible tmp]# ansible wsr -m setup -a ‘filter=cpu’

192.168.100.20 | SUCCESS => {

“ansible_facts”: {

“ansible_processor_vcpus”: 2,

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: false

}

192.168.100.10 | SUCCESS => {

“ansible_facts”: {

“ansible_processor_vcpus”: 2,

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: false

}

12 service 模块

该模块用于服务程序的管理。

其主要选项如下：

arguments #命令行提供额外的参数
enabled #设置开机启动。
name= #服务名称
runlevel #开机启动的级别，一般不用指定。
sleep #在重启服务的过程中，是否等待。如在服务关闭以后等待2秒再启动。(定义在剧本中。)
state #有四种状态，分别为：started—>启动服务， stopped—>停止服务，
restarted—>重启服务， reloaded—>重载配置

[root@ansible tmp]# ansible wsr -m service -a ‘name=httpd state=restarted enabled=true’

192.168.100.20 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“enabled”: true,

“name”: “httpd”,

“state”: “started”,

“status”: {

“ActiveEnterTimestampMonotonic”: “0”,

“ActiveExitTimestampMonotonic”: “0”,

“ActiveState”: “inactive”,

“After”: “basic.target remote-fs.target system.slice systemd-journald.socket network.target tmp.mount nss-lookup.target -.mount”,

“AllowIsolate”: “no”,

“AmbientCapabilities”: “0”,

“AssertResult”: “no”,

“AssertTimestampMonotonic”: “0”,

“Before”: “shutdown.target”,

“BlockIOAccounting”: “no”,

“BlockIOWeight”: “18446744073709551615”,

“CPUAccounting”: “no”,

“CPUQuotaPerSecUSec”: “infinity”,

“CPUSchedulingPolicy”: “0”,

“CPUSchedulingPriority”: “0”,

“CPUSchedulingResetOnFork”: “no”,

“CPUShares”: “18446744073709551615”,

“CanIsolate”: “no”,

“CanReload”: “yes”,

“CanStart”: “yes”,

“CanStop”: “yes”,

“CapabilityBoundingSet”: “18446744073709551615”,

“ConditionResult”: “no”,

“ConditionTimestampMonotonic”: “0”,

“Conflicts”: “shutdown.target”,

“ControlPID”: “0”,

“DefaultDependencies”: “yes”,

“Delegate”: “no”,

“Description”: “The Apache HTTP Server”,

“DevicePolicy”: “auto”,

“Documentation”: “man:httpd(8) man:apachectl(8)”,

“EnvironmentFile”: “/etc/sysconfig/httpd (ignore_errors=no)”,

“ExecMainCode”: “0”,

“ExecMainExitTimestampMonotonic”: “0”,

“ExecMainPID”: “0”,

“ExecMainStartTimestampMonotonic”: “0”,

“ExecMainStatus”: “0”,

“ExecReload”: “{ path=/usr/sbin/httpd ; argv[]=/usr/sbin/httpd $OPTIONS -k graceful ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }”,

“ExecStart”: “{ path=/usr/sbin/httpd ; argv[]=/usr/sbin/httpd $OPTIONS -DFOREGROUND ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }”,

“ExecStop”: “{ path=/bin/kill ; argv[]=/bin/kill -WINCH ${MAINPID} ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }”,

“FailureAction”: “none”,

“FileDescriptorStoreMax”: “0”,

“FragmentPath”: “/usr/lib/systemd/system/httpd.service”,

“GuessMainPID”: “yes”,

“IOScheduling”: “0”,

“Id”: “httpd.service”,

“IgnoreOnIsolate”: “no”,

“IgnoreOnSnapshot”: “no”,

“IgnoreSIGPIPE”: “yes”,

“InactiveEnterTimestampMonotonic”: “0”,

“InactiveExitTimestampMonotonic”: “0”,

“JobTimeoutAction”: “none”,

“JobTimeoutUSec”: “0”,

“KillMode”: “control-group”,

“KillSignal”: “18”,

“LimitAS”: “18446744073709551615”,

“LimitCORE”: “18446744073709551615”,

“LimitCPU”: “18446744073709551615”,

“LimitDATA”: “18446744073709551615”,

“LimitFSIZE”: “18446744073709551615”,

“LimitLOCKS”: “18446744073709551615”,

“LimitMEMLOCK”: “65536”,

“LimitMSGQUEUE”: “819200”,

“LimitNICE”: “0”,

“LimitNOFILE”: “4096”,

“LimitNPROC”: “3795”,

“LimitRSS”: “18446744073709551615”,

“LimitRTPRIO”: “0”,

“LimitRTTIME”: “18446744073709551615”,

“LimitSIGPENDING”: “3795”,

“LimitSTACK”: “18446744073709551615”,

“LoadState”: “loaded”,

“MainPID”: “0”,

“MemoryAccounting”: “no”,

“MemoryCurrent”: “18446744073709551615”,

“MemoryLimit”: “18446744073709551615”,

“MountFlags”: “0”,

“Names”: “httpd.service”,

“NeedDaemonReload”: “no”,

“Nice”: “0”,

“NoNewPrivileges”: “no”,

“NonBlocking”: “no”,

“NotifyAccess”: “main”,

“OOMScoreAdjust”: “0”,

“OnFailureJobMode”: “replace”,

“PermissionsStartOnly”: “no”,

“PrivateDevices”: “no”,

“PrivateNetwork”: “no”,

“PrivateTmp”: “yes”,

“ProtectHome”: “no”,

“ProtectSystem”: “no”,

“RefuseManualStart”: “no”,

“RefuseManualStop”: “no”,

“RemainAfterExit”: “no”,

“Requires”: “-.mount basic.target”,

“RequiresMountsFor”: “/var/tmp”,

“Restart”: “no”,

“RestartUSec”: “100ms”,

“Result”: “success”,

“RootDirectoryStartOnly”: “no”,

“RuntimeDirectoryMode”: “0755”,

“SameProcessGroup”: “no”,

“SecureBits”: “0”,

“SendSIGHUP”: “no”,

“SendSIGKILL”: “yes”,

“Slice”: “system.slice”,

“StandardError”: “inherit”,

“StandardInput”: “null”,

“StandardOutput”: “journal”,

“StartLimitAction”: “none”,

“StartLimitBurst”: “5”,

“StartLimitInterval”: “10000000”,

“StartupBlockIOWeight”: “18446744073709551615”,

“StartupCPUShares”: “18446744073709551615”,

“StatusErrno”: “0”,

“StopWhenUnneeded”: “no”,

“SubState”: “dead”,

“SyslogLevelPrefix”: “yes”,

“SyslogPriority”: “30”,

“SystemCallErrorNumber”: “0”,

“TTYReset”: “no”,

“TTYVHangup”: “no”,

“TTYVTDisallocate”: “no”,

“TasksAccounting”: “no”,

“TasksCurrent”: “18446744073709551615”,

“TasksMax”: “18446744073709551615”,

“TimeoutStartUSec”: “1min 30s”,

“TimeoutStopUSec”: “1min 30s”,

“TimerSlackNSec”: “50000”,

“Transient”: “no”,

“Type”: “notify”,

“UMask”: “0022”,

“UnitFilePreset”: “disabled”,

“UnitFileState”: “disabled”,

“Wants”: “system.slice”,

“WatchdogTimestampMonotonic”: “0”,

“WatchdogUSec”: “0”

}

192.168.100.10 | CHANGED => {

“ansible_facts”: {

“discovered_interpreter_python”: “/usr/bin/python”

“changed”: true,

“enabled”: true,

“name”: “httpd”,

“state”: “started”,

“status”: {

“ActiveEnterTimestampMonotonic”: “0”,

“ActiveExitTimestampMonotonic”: “0”,

“ActiveState”: “inactive”,

“After”: “remote-fs.target nss-lookup.target tmp.mount basic.target -.mount systemd-journald.socket system.slice network.target”,

“AllowIsolate”: “no”,

“AmbientCapabilities”: “0”,

“AssertResult”: “no”,

“AssertTimestampMonotonic”: “0”,

“Before”: “shutdown.target”,

“BlockIOAccounting”: “no”,

“BlockIOWeight”: “18446744073709551615”,

“CPUAccounting”: “no”,

“CPUQuotaPerSecUSec”: “infinity”,

“CPUSchedulingPolicy”: “0”,

“CPUSchedulingPriority”: “0”,

“CPUSchedulingResetOnFork”: “no”,

“CPUShares”: “18446744073709551615”,

“CanIsolate”: “no”,

“CanReload”: “yes”,

“CanStart”: “yes”,

“CanStop”: “yes”,

“CapabilityBoundingSet”: “18446744073709551615”,

“ConditionResult”: “no”,

“ConditionTimestampMonotonic”: “0”,

“Conflicts”: “shutdown.target”,

“ControlPID”: “0”,

“DefaultDependencies”: “yes”,

“Delegate”: “no”,

“Description”: “The Apache HTTP Server”,

“DevicePolicy”: “auto”,

“Documentation”: “man:httpd(8) man:apachectl(8)”,

“EnvironmentFile”: “/etc/sysconfig/httpd (ignore_errors=no)”,

“ExecMainCode”: “0”,

“ExecMainExitTimestampMonotonic”: “0”,

“ExecMainPID”: “0”,

“ExecMainStartTimestampMonotonic”: “0”,

“ExecMainStatus”: “0”,

“ExecReload”: “{ path=/usr/sbin/httpd ; argv[]=/usr/sbin/httpd $OPTIONS -k graceful ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }”,

“ExecStart”: “{ path=/usr/sbin/httpd ; argv[]=/usr/sbin/httpd $OPTIONS -DFOREGROUND ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }”,

“ExecStop”: “{ path=/bin/kill ; argv[]=/bin/kill -WINCH ${MAINPID} ; ignore_errors=no ; start_time=[n/a] ; stop_time=[n/a] ; pid=0 ; code=(null) ; status=0/0 }”,

“FailureAction”: “none”,

“FileDescriptorStoreMax”: “0”,

“FragmentPath”: “/usr/lib/systemd/system/httpd.service”,

“GuessMainPID”: “yes”,

“IOScheduling”: “0”,

“Id”: “httpd.service”,

“IgnoreOnIsolate”: “no”,

“IgnoreOnSnapshot”: “no”,

“IgnoreSIGPIPE”: “yes”,

“InactiveEnterTimestampMonotonic”: “0”,

“InactiveExitTimestampMonotonic”: “0”,

“JobTimeoutAction”: “none”,

“JobTimeoutUSec”: “0”,

“KillMode”: “control-group”,

“KillSignal”: “18”,

“LimitAS”: “18446744073709551615”,

“LimitCORE”: “18446744073709551615”,

“LimitCPU”: “18446744073709551615”,

“LimitDATA”: “18446744073709551615”,

“LimitFSIZE”: “18446744073709551615”,

“LimitLOCKS”: “18446744073709551615”,

“LimitMEMLOCK”: “65536”,

“LimitMSGQUEUE”: “819200”,

“LimitNICE”: “0”,

“LimitNOFILE”: “4096”,

“LimitNPROC”: “3795”,

“LimitRSS”: “18446744073709551615”,

“LimitRTPRIO”: “0”,

“LimitRTTIME”: “18446744073709551615”,

“LimitSIGPENDING”: “3795”,

“LimitSTACK”: “18446744073709551615”,

“LoadState”: “loaded”,

“MainPID”: “0”,

“MemoryAccounting”: “no”,

“MemoryCurrent”: “18446744073709551615”,

“MemoryLimit”: “18446744073709551615”,

“MountFlags”: “0”,

“Names”: “httpd.service”,

“NeedDaemonReload”: “no”,

“Nice”: “0”,

“NoNewPrivileges”: “no”,

“NonBlocking”: “no”,

“NotifyAccess”: “main”,

“OOMScoreAdjust”: “0”,

“OnFailureJobMode”: “replace”,

“PermissionsStartOnly”: “no”,
自我介绍一下，小编13年上海交大毕业，曾经在小公司待过，也去过华为、OPPO等大厂，18年进入阿里一直到现在。

深知大多数Java工程师，想要提升技能，往往是自己摸索成长或者是报班学习，但对于培训机构动则几千的学费，着实压力不小。自己不成体系的自学效果低效又漫长，而且极易碰到天花板技术停滞不前！

因此收集整理了一份《2024年Java开发全套学习资料》，初衷也很简单，就是希望能够帮助到想自学提升又不知道该从何学起的朋友，同时减轻大家的负担。

既有适合小白学习的零基础资料，也有适合3年以上经验的小伙伴深入学习提升的进阶课程，基本涵盖了95%以上Java开发知识点，真正体系化！

由于文件比较大，这里只是将部分目录截图出来，每个节点里面都包含大厂面经、学习笔记、源码讲义、实战项目、讲解视频，并且会持续更新！

如果你觉得这些内容对你有帮助，可以扫码获取！！（备注Java获取）

总结

面试前的“练手”还是很重要的，所以开始面试之前一定要准备好啊，不然也是耽搁面试官和自己的时间。

我自己是刷了不少面试题的，所以在面试过程中才能够做到心中有数，基本上会清楚面试过程中会问到哪些知识点，高频题又有哪些，所以刷题是面试前期准备过程中非常重要的一点。

面试题及解析总结

三年Java开发，刚从美团、京东、阿里面试归来，分享个人面经

大厂面试场景

三年Java开发，刚从美团、京东、阿里面试归来，分享个人面经

知识点总结

三年Java开发，刚从美团、京东、阿里面试归来，分享个人面经

《互联网大厂面试真题解析、进阶开发核心学习笔记、全套讲解视频、实战项目源码讲义》点击传送门即可获取！

“MemoryLimit”: “18446744073709551615”,

“MountFlags”: “0”,

“Names”: “httpd.service”,

“NeedDaemonReload”: “no”,

“Nice”: “0”,

“NoNewPrivileges”: “no”,

“NonBlocking”: “no”,

“NotifyAccess”: “main”,

“OOMScoreAdjust”: “0”,

“OnFailureJobMode”: “replace”,

“PermissionsStartOnly”: “no”,
自我介绍一下，小编13年上海交大毕业，曾经在小公司待过，也去过华为、OPPO等大厂，18年进入阿里一直到现在。

因此收集整理了一份《2024年Java开发全套学习资料》，初衷也很简单，就是希望能够帮助到想自学提升又不知道该从何学起的朋友，同时减轻大家的负担。[外链图片转存中…(img-fP4Y3W5Z-1712988340816)]

[外链图片转存中…(img-RTIfI2uo-1712988340817)]

[外链图片转存中…(img-HYG0EVwW-1712988340817)]

既有适合小白学习的零基础资料，也有适合3年以上经验的小伙伴深入学习提升的进阶课程，基本涵盖了95%以上Java开发知识点，真正体系化！

由于文件比较大，这里只是将部分目录截图出来，每个节点里面都包含大厂面经、学习笔记、源码讲义、实战项目、讲解视频，并且会持续更新！

如果你觉得这些内容对你有帮助，可以扫码获取！！（备注Java获取）

总结

面试前的“练手”还是很重要的，所以开始面试之前一定要准备好啊，不然也是耽搁面试官和自己的时间。

面试题及解析总结

[外链图片转存中…(img-Kd2AZxkL-1712988340817)]

大厂面试场景

[外链图片转存中…(img-LQsd2Any-1712988340818)]

知识点总结

[外链图片转存中…(img-wbfDa4i4-1712988340818)]

《互联网大厂面试真题解析、进阶开发核心学习笔记、全套讲解视频、实战项目源码讲义》点击传送门即可获取！