Docker：容器间互联的应用zabbix监控项目 [十]

一、docker容器间的互联

1、创建两个容器

[root@luoahong ~]# docker run -d --name luoahong httpd:latest

8f771f043391e77d18fb26d1af0f9c9a6e9fdd1e76ae05c41c265db1f6780067

[root@luoahong ~]# docker run -it --link luoahong:web01 centos:6.8

Unable to find image 'centos:6.8' locally

6.8: Pulling from library/centos

b268bb2f98b2: Pull complete

Digest: sha256:21567ed29d2ae26d89709006f881d6e2b14e5a6144239e707d922a0dd7b8cd6e

Status: Downloaded newer image for centos:6.8

2、容器互访（之前是通过如下方式）

1、查询容器ip

[root@luoahong ~]# docker inspect luoahong

2、通过ip互联

[root@124528a51f1c /]# ifconfig

eth0      Link encap:Ethernet  HWaddr 02:42:AC:11:00:05

          inet addr:172.17.0.5  Bcast:172.17.255.255  Mask:255.255.0.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:14 errors:0 dropped:0 overruns:0 frame:0

          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0

          RX bytes:1229 (1.2 KiB)  TX bytes:660 (660.0 b)

lo        Link encap:Local Loopback

          inet addr:127.0.0.1  Mask:255.0.0.0

          UP LOOPBACK RUNNING  MTU:65536  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1

          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

[root@124528a51f1c /]# curl -I 172.17.0.4

HTTP/1.1 200 OK

Date: Thu, 17 Jan 2019 07:08:53 GMT

Server: Apache/2.4.37 (Unix)

Last-Modified: Mon, 11 Jun 2007 18:53:14 GMT

ETag: "2d-432a5e4a73a80"

Accept-Ranges: bytes

Content-Length: 45

Content-Type: text/html

3、原理推导

1、curl luoahong

[root@124528a51f1c /]# curl -I luoahong

HTTP/1.1 200 OK

Date: Thu, 17 Jan 2019 07:10:07 GMT

Server: Apache/2.4.37 (Unix)

Last-Modified: Mon, 11 Jun 2007 18:53:14 GMT

ETag: "2d-432a5e4a73a80"

Accept-Ranges: bytes

Content-Length: 45

Content-Type: text/html

2、curl web01（别名）

[root@124528a51f1c /]# curl -I web01

HTTP/1.1 200 OK

Date: Thu, 17 Jan 2019 07:10:20 GMT

Server: Apache/2.4.37 (Unix)

Last-Modified: Mon, 11 Jun 2007 18:53:14 GMT

ETag: "2d-432a5e4a73a80"

Accept-Ranges: bytes

Content-Length: 45

Content-Type: text/html

3、原来是因为这里

Docker：容器间互联的应用zabbix监控项目 [十]

[root@124528a51f1c /]# cat /etc/hosts

127.0.0.1	localhost

::1	localhost ip6-localhost ip6-loopback

fe00::0	ip6-localnet

ff00::0	ip6-mcastprefix

ff02::1	ip6-allnodes

ff02::2	ip6-allrouters

172.17.0.4	web01 8f771f043391 luoahong

172.17.0.5	124528a51f1c

4、小结

1、先启动的容器无法连接后启动的容器

2、但是后启动的容器可以连接新启动的容器

3、容器间互联的方法：--link 单方向的

二、docker容器间互联的应用

1、zabbix-server容器创建

[root@luoahong ~]# docker run --name mysql-server -t \

>       -e MYSQL_DATABASE="zabbix" \

>       -e MYSQL_USER="zabbix" \

>       -e MYSQL_PASSWORD="zabbix_pwd" \

>       -e MYSQL_ROOT_PASSWORD="root_pwd" \

>       -d mysql:5.7 \

>       --character-set-server=utf8 --collation-server=utf8_bin

 MYSQL_PASSWORD="zabbix_pwd" \

      -e MYSQL_ROOT_PASSWORD="root_pwd" \

      -e ZBX_JAVAGATEWAY="zabbix-java-gateway" \

      --link mysql-server:mysql \

      --link zabbix-java-gateway:zabbix-java-gateway \

      -p 10051:10051 \

      -d zabbix/zabbix-server-mysql:latest

docker run --name zabbix-web-nginx-mysql -t \

      -e DB_SERVER_HOST="mysql-server" \

      -e MYSQL_DATABASE="zabbix" \

      -e MYSQL_USER="zabbix" \

      -e MYSQL_PASSWORD="zabbix_pwd" \

      -e MYSQL_ROOT_PASSWORD="root_pwd" \

      --link mysql-server:mysql \

      --link zabbix-server-mysql:zabbix-server \

      -p 80:80 \

      -d zabbix/zabbix-web-nginx-mysql:latestUnable to find image 'mysql:5.7' locally

5.7: Pulling from library/mysql

177e7ef0df69: Already exists

cac25352c4c8: Pull complete

8585afabb40a: Pull complete

1e4af4996053: Pull complete

c326522894da: Pull complete

9020d6b6b171: Pull complete

55eb37ec6e5f: Pull complete

1a9d2f77e0e7: Pull complete

d7e648ad64aa: Pull complete

4120d828ea6b: Pull complete

3b39dc5451af: Pull complete

Digest: sha256:bf17a7109057494c45fba5aab7fc805ca00ac1eef638dfdd42b38d5a7190c9bb

Status: Downloaded newer image for mysql:5.7

1c3951a744dfba3f0f5651295069c2480e18dcf32185e28de5e04ebee9370dd3

[root@luoahong ~]#

[root@luoahong ~]# docker run --name zabbix-java-gateway -t \

>       -d zabbix/zabbix-java-gateway:latest

Unable to find image 'zabbix/zabbix-java-gateway:latest' locally

latest: Pulling from zabbix/zabbix-java-gateway

c67f3896b22c: Pull complete

8d77a75362f3: Downloading

936305c240da: Download complete

142f69f7e033: Download complete

5461b2656c90: Download complete

3aa2a12cb3ee: Download complete

latest: Pulling from zabbix/zabbix-java-gateway

407ea412d82c: Pull complete

cafad5f8b858: Pull complete

1dc9b3dcdd9a: Pull complete

66b294030177: Pull complete

a6f8455af247: Pull complete

b9582210b715: Pull complete

Digest: sha256:b1ca03fddcf38758ae05a1e1a1fb8094c5510207c66ad9567d5986f28c03f625

Status: Downloaded newer image for zabbix/zabbix-java-gateway:latest

27753c4be35cc24f6f9ded1c62998e4ed84a57c3a464e246a49da6a0bf93485e

[root@luoahong ~]#

[root@luoahong ~]# docker run --name zabbix-server-mysql -t \

>       -e DB_SERVER_HOST="mysql-server" \

>       -e MYSQL_DATABASE="zabbix" \

>       -e MYSQL_USER="zabbix" \

>       -e MYSQL_PASSWORD="zabbix_pwd" \

>       -e MYSQL_ROOT_PASSWORD="root_pwd" \

>       -e ZBX_JAVAGATEWAY="zabbix-java-gateway" \

>       --link mysql-server:mysql \

>       --link zabbix-java-gateway:zabbix-java-gateway \

>       -p 10051:10051 \

>       -d zabbix/zabbix-server-mysql:latest

Unable to find image 'zabbix/zabbix-server-mysql:latest' locally

latest: Pulling from zabbix/zabbix-server-mysql

d6a5679aa3cf: Pull complete

7a046b910a3c: Pull complete

497545b1664f: Pull complete

58ac09628c71: Pull complete

Digest: sha256:b19befc6b83e22b8ad7f95f792fa138d142c2f67aaf936486e628675a1bf4ee3

Status: Downloaded newer image for zabbix/zabbix-server-mysql:latest

c41b9fbfa96aaf87b170f3fef7321901e9b6249a06e1ff8afaca8ed81f5a235b

[root@luoahong ~]#

[root@luoahong ~]# docker run --name zabbix-web-nginx-mysql -t \

>       -e DB_SERVER_HOST="mysql-server" \

>       -e MYSQL_DATABASE="zabbix" \

>       -e MYSQL_USER="zabbix" \

>       -e MYSQL_PASSWORD="zabbix_pwd" \

>       -e MYSQL_ROOT_PASSWORD="root_pwd" \

>       --link mysql-server:mysql \

>       --link zabbix-server-mysql:zabbix-server \

>       -p 80:80 \

>       -d zabbix/zabbix-web-nginx-mysql:latest

Unable to find image 'zabbix/zabbix-web-nginx-mysql:latest' locally

latest: Pulling from zabbix/zabbix-web-nginx-mysql

c67f3896b22c: Pull complete

90884e24b31c: Pull complete

c9ddded2780e: Pull complete

1fb53af6cb01: Pull complete

fbefe3595fbc: Pull complete

6b4acce82f87: Pull complete

a4bf8619ae81: Pull complete

604f32616982: Pull complete

1bf0ca328b88: Pull complete

913cf2a0cff6: Pull complete

571ab96e2d5b: Pull complete

e6e318768910: Pull complete

Digest: sha256:6894a50fea7ca7c092f93e0c852b1a92d4d9bb5cc572ff65fbc256acc9228251

Status: Downloaded newer image for zabbix/zabbix-web-nginx-mysql:latest

6ed643eb215dcb85248b27459ce4052348ebac526aa6996745adcf78b0b63492

[root@luoahong ~]#

[root@luoahong ~]# docker ps -a

CONTAINER ID        IMAGE                                  COMMAND                  CREATED             STATUS              PORTS                         NAMES

5522f6a8dae4        zabbix/zabbix-web-nginx-mysql:latest   "docker-entrypoint.sh"   13 seconds ago      Up 12 seconds       0.0.0.0:80->80/tcp, 443/tcp   zabbix-web-nginx-mysql

508f433fac31        zabbix/zabbix-server-mysql:latest      "docker-entrypoint.sh"   18 seconds ago      Up 15 seconds       0.0.0.0:10051->10051/tcp      zabbix-server-mysql

7eb8ca5a2b9e        zabbix/zabbix-java-gateway:latest      "docker-entrypoint.sh"   19 seconds ago      Up 17 seconds       10052/tcp                     zabbix-java-gateway

73351adb12c7        mysql:5.7                              "docker-entrypoint.s…"   19 seconds ago      Up 18 seconds       3306/tcp, 33060/tcp           mysql-server

2、这些命令来自哪里

https://www.zabbix.com/documentation/4.0/manual/installation/containers

来自zabbix安装在容器中

3、登录zabbix web界面

Docker：容器间互联的应用zabbix监控项目 [十]

三、zabbix服务器监控客户端实例

1、客户端安装

1、下载安装

[root@luoahong ~]# rpm -ivh https://mirrors.tuna.tsinghua.edu.cn/zabbix/zabbix/4.0/rhel/7/x86_64/zabbix-agent-4.0.2-1.el7.x86_64.rpm

Retrieving https://mirrors.tuna.tsinghua.edu.cn/zabbix/zabbix/4.0/rhel/7/x86_64/zabbix-agent-4.0.2-1.el7.x86_64.rpm

warning: /var/tmp/rpm-tmp.FBRxfZ: Header V4 RSA/SHA512 Signature, key ID a14fe591: NOKEY

Preparing...                          ################################# [100%]

Updating / installing...

   1:zabbix-agent-4.0.2-1.el7         ################################# [100%]

2、配置启动

[root@luoahong ~]# vim /etc/zabbix/zabbix_agentd.conf

Server=192.168.228.133

[root@luoahong ~]# systemctl start zabbix-agent.service

[root@luoahong ~]# netstat -lntup

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name

tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1207/sshd

tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      1757/zabbix_agentd

tcp6       0      0 :::22                   :::*                    LISTEN      1207/sshd

tcp6       0      0 :::10050                :::*                    LISTEN      1757/zabbix_agentd

udp        0      0 0.0.0.0:25299           0.0.0.0:*                           1149/dhclient

udp        0      0 0.0.0.0:68              0.0.0.0:*                           1149/dhclient

udp        0      0 127.0.0.1:323           0.0.0.0:*                           942/chronyd

udp6       0      0 ::1:323                 :::*                                942/chronyd

udp6       0      0 :::39247                :::*                                1149/dhclient

2、zabbix web界面添加监控主机

Docker：容器间互联的应用zabbix监控项目 [十]

3、zabbix web端快速检测到agent的方法

1、重启zabbix-server服务

[root@luoahong ~]# docker ps -a

CONTAINER ID        IMAGE                                  COMMAND                  CREATED             STATUS              PORTS                         NAMES

5522f6a8dae4        zabbix/zabbix-web-nginx-mysql:latest   "docker-entrypoint.sh"   25 minutes ago      Up 25 minutes       0.0.0.0:80->80/tcp, 443/tcp   zabbix-web-nginx-mysql

508f433fac31        zabbix/zabbix-server-mysql:latest      "docker-entrypoint.sh"   25 minutes ago      Up 25 minutes       0.0.0.0:10051->10051/tcp      zabbix-server-mysql

7eb8ca5a2b9e        zabbix/zabbix-java-gateway:latest      "docker-entrypoint.sh"   25 minutes ago      Up 25 minutes       10052/tcp                     zabbix-java-gateway

73351adb12c7        mysql:5.7                              "docker-entrypoint.s…"   25 minutes ago      Up 25 minutes       3306/tcp, 33060/tcp           mysql-server

[root@luoahong ~]# docker restart zabbix/zabbix-server-mysql

Error response from daemon: No such container: zabbix/zabbix-server-mysql

[root@luoahong ~]# docker restart zabbix-server-mysql

zabbix-server-mysql

[root@luoahong ~]# docker ps -a

CONTAINER ID        IMAGE                                  COMMAND                  CREATED             STATUS              PORTS                         NAMES

5522f6a8dae4        zabbix/zabbix-web-nginx-mysql:latest   "docker-entrypoint.sh"   26 minutes ago      Up 26 minutes       0.0.0.0:80->80/tcp, 443/tcp   zabbix-web-nginx-mysql

508f433fac31        zabbix/zabbix-server-mysql:latest      "docker-entrypoint.sh"   26 minutes ago      Up 5 seconds        0.0.0.0:10051->10051/tcp      zabbix-server-mysql

7eb8ca5a2b9e        zabbix/zabbix-java-gateway:latest      "docker-entrypoint.sh"   26 minutes ago      Up 26 minutes       10052/tcp                     zabbix-java-gateway

73351adb12c7        mysql:5.7                              "docker-entrypoint.s…"   26 minutes ago      Up 26 minutes       3306/tcp, 33060/tcp           mysql-server

2、再次查看已经变绿

Docker：容器间互联的应用zabbix监控项目 [十]

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Docker：容器间互联的应用zabbix监控项目 [十]

一、docker容器间的互联

1、创建两个容器

2、容器互访（之前是通过如下方式）

1、查询容器ip

2、通过ip互联

3、原理推导

4、小结

二、docker容器间互联的应用

1、zabbix-server容器创建

2、这些命令来自哪里

3、登录zabbix web界面

三、zabbix服务器监控客户端实例

1、客户端安装

2、zabbix web界面添加监控主机

3、zabbix web端快速检测到agent的方法

1、重启zabbix-server服务

2、再次查看已经变绿

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