网站建设中的图片,一个人做商城网站,网站后台能进前台空白,wordpress 网盘主题文章目录 1 docker存储1.1 目录挂载2.1卷映射2.1.1卷映射和目录挂载的区别2.1.2卷映射的使用 2 docker网络2.1查看docker的默认网络2.2查看容器的IP2.3容器互通2.4自定义网络2.4.1 创建自定义网络2.4.2创建容器的时候加入到自定义的网络2.4.3使用域名进行容器之间的访问2.4.4re… 文章目录 1 docker存储1.1 目录挂载2.1卷映射2.1.1卷映射和目录挂载的区别2.1.2卷映射的使用 2 docker网络2.1查看docker的默认网络2.2查看容器的IP2.3容器互通2.4自定义网络2.4.1 创建自定义网络2.4.2创建容器的时候加入到自定义的网络2.4.3使用域名进行容器之间的访问2.4.4redis主从同步集群2.4.4.1启动redis主节点容器2.4.4.2启动redis从节点容器 1 docker存储
1.1 目录挂载 目录挂载的作用就好像是U盘盘符里面的内容和电脑里面展示的是一样的。如果容器挂了那么重启开启容器并且指定原来的盘符映射到容器就可以了。 -d:后台运行-p主机port容器port。这样外部就可以访问档容器了–name指定容器的名字-v:主机目录容器目录。这样就会把容器里面的数据保存到主机了即使容器崩了也木事。
[rootroot ~]# docker run -d -p 80:80 --name mynginx -v /app/nghtml:/usr/share/nginx/html nginx
Unable to find image nginx:latest locally
latest: Pulling from library/nginx
09f376ebb190: Already exists
5529e0792248: Already exists
9b3addd3eb3d: Already exists
57910a8c4316: Already exists
7b5f78f21449: Already exists
b7923aa4e8a6: Already exists
785625911f12: Already exists
Digest: sha256:0f04e4f646a3f14bf31d8bc8d885b6c951fdcf42589d06845f64d18aec6a3c4d
Status: Downloaded newer image for nginx:latest
7236550f01944f5bcf235404fc455a46e986cbc879a764d054a08b5d0d92d0a2
[rootroot ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
7236550f0194 nginx /docker-entrypoint.… About a minute ago Up About a minute 0.0.0.0:80-80/tcp, :::80-80/tcp mynginx
[rootroot ~]#
2.1卷映射
2.1.1卷映射和目录挂载的区别
若将nginx配置文件进行目录挂载那么会启动报错nginx: [emerg] open() /etc/nginx/nginx.conf failed (2: No such file or directory)。因为目录挂载容易会以主机的目录为主首先进行加载。 如果在容器启动就进行加载的文件进行卷映射。卷映射会在容器启动的时候将启动的配置文件同步到主机的卷中
[rootroot ~]# docker run -d -p 88:80 --name app01 -v /app/nghtml:/usr/share/nginx/htm -v /app/nghtml:/etc/nginx nginx
45d51b3d7733481ad6deb7c5d7321915ba867850021b6e3eeed67bfe5437a654
[rootroot ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
45d51b3d7733 nginx /docker-entrypoint.… 12 seconds ago Exited (1) 12 seconds ago app01
7236550f0194 nginx /docker-entrypoint.… 20 minutes ago Up 20 minutes 0.0.0.0:80-80/tcp, :::80-80/tcp mynginx
[rootroot ~]# docker logs 45d51b3d7733
/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: /etc/nginx/conf.d/default.conf is not a file or does not exist
/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2024/06/05 01:44:31 [emerg] 1#1: open() /etc/nginx/nginx.conf failed (2: No such file or directory)
nginx: [emerg] open() /etc/nginx/nginx.conf failed (2: No such file or directory)
[rootroot ~]#
2.1.2卷映射的使用
删除容器卷不会删除
[rootroot ~]# docker run -d -p 89:80 -v /app/nghtml:/usr/share/nginx/html -v ngconfig:/etc/nginx --name app02 nginx
514d71e9fa6b5e96442c04a5ea69401e73102191329647c728bf92d6d5e334c7
[rootroot ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
514d71e9fa6b nginx /docker-entrypoint.… 4 seconds ago Up 4 seconds 0.0.0.0:89-80/tcp, :::89-80/tcp app02
7236550f0194 nginx /docker-entrypoint.… 34 minutes ago Up 34 minutes 0.0.0.0:80-80/tcp, :::80-80/tcp mynginx
[rootroot ~]#
查看卷的位置/var/lib/docker/volumes/ngconfig卷名docker默认目录
[rootroot ~]# cd /var/lib/docker/volumes/ngconfig卷名
[rootroot ngconfig]# ls
_data
[rootroot ngconfig]# cd _data/
[rootroot _data]# ls
conf.d fastcgi_params mime.types modules nginx.conf scgi_params uwsgi_params
[rootroot _data]#
[rootroot _data]# docker volume ls 查看所有卷的列表
DRIVER VOLUME NAME
local ngconfig
[rootroot _data]# 查看某个卷的详情
[rootroot _data]# docker volume inspect ngconfig 卷名
[{CreatedAt: 2024-06-05T09:57:5108:00,Driver: local,Labels: null,Mountpoint: /var/lib/docker/volumes/ngconfig/_data,Name: ngconfig,Options: null,Scope: local}
]
[rootroot _data]#
2 docker网络
docker在安装之后就会有一个默认网络docker0容器在启动之后就会加入这个默认的安排
2.1查看docker的默认网络
[rootroot _data]# ip a
1: lo: LOOPBACK,UP,LOWER_UP mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: eth0: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:16:3e:06:4d:35 brd ff:ff:ff:ff:ff:ffinet 172.28.216.6/20 brd 172.28.223.255 scope global dynamic eth0valid_lft 315352185sec preferred_lft 315352185secinet6 fe80::216:3eff:fe06:4d35/64 scope link valid_lft forever preferred_lft forever
3: docker0: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc noqueue state UP group default link/ether 02:42:e1:74:a5:bf brd ff:ff:ff:ff:ff:ffinet 172.17.0.1/16 brd 172.17.255.255 scope global docker0valid_lft forever preferred_lft foreverinet6 fe80::42:e1ff:fe74:a5bf/64 scope link valid_lft forever preferred_lft forever
5: veth873139cif4: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc noqueue master docker0 state UP group default link/ether 9a:cc:07:b8:51:aa brd ff:ff:ff:ff:ff:ff link-netnsid 0inet6 fe80::98cc:7ff:feb8:51aa/64 scope link valid_lft forever preferred_lft forever
11: veth1b36288if10: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc noqueue master docker0 state UP group default link/ether ea:38:4b:e5:22:b3 brd ff:ff:ff:ff:ff:ff link-netnsid 1inet6 fe80::e838:4bff:fee5:22b3/64 scope link valid_lft forever preferred_lft forever
[rootroot _data]#
2.2查看容器的IP
查看容器的IP使用一下命令查看 Networks:中的 Gateway: 172.17.0.1, IPAddress: 172.17.0.3,
[rootroot _data]# docker inspect app02 Networks: {bridge: {IPAMConfig: null,Links: null,Aliases: null,MacAddress: 02:42:ac:11:00:03,NetworkID: 5c06bf39edc223eda9311e67b5b0d023806ed375e8e24e8672be832f691b908b,EndpointID: 1ecef5a2c484b5823319b003a248ce88b5b847f16cdf88cd889887eaf1a57679,Gateway: 172.17.0.1,IPAddress: 172.17.0.3,
2.3容器互通
docker为每一个容器分配一个ip使用ipport可以使容器之间相互访问。
[rootroot _data]# docker exec -it mynginx bash
root7236550f0194:/# curl http://172.17.0.3:80
2.4自定义网络
原因容器的ip不固定创建一个新的网络使用域名的方式进行访问
2.4.1 创建自定义网络
[rootroot _data]# docker network create mynet
55cff593988b4e0de23ed26924d1f4e011a53f9d8b27ee4a5b98bc7ea6870958
[rootroot _data]# docker network ls
NETWORK ID NAME DRIVER SCOPE
5c06bf39edc2 bridge bridge local
1776efe50fa7 host host local
55cff593988b mynet bridge local
5297b84dfd13 none null local
[rootroot _data]#
2.4.2创建容器的时候加入到自定义的网络
[rootroot _data]# docker run -d --name app01 --network mynet -p 81:80 nginx
1c0baf2a2666d839add230effa4530b5e8ef7123be0573e7a6a686276f84a9b0
[rootroot _data]# docker run -d --name app02 --network mynet -p 82:80 nginx
056416a0c89f8e9ca771c7c5f301b1d5e0312afa24cc1815d895b232bf724258
[rootroot _data]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
056416a0c89f nginx /docker-entrypoint.… 5 seconds ago Up 5 seconds 0.0.0.0:82-80/tcp, :::82-80/tcp app02
1c0baf2a2666 nginx /docker-entrypoint.… 19 seconds ago Up 19 seconds 0.0.0.0:81-80/tcp, :::81-80/tcp app01
[rootroot _data]#2.4.3使用域名进行容器之间的访问
因为使用ip进行容器之间的访问ip不固定。所以在创建容器的时候指定加入自定义网络那么就可以使用固定的域名进行访问了这个域名就是http://app02(容器名):80
[rootroot ~]# docker exec -it app01 bash
root1c0baf2a2666:/# curl http://app02:80
!DOCTYPE html
html
head
titleWelcome to nginx!/title
style
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
/style
/head
body
h1Welcome to nginx!/h1
pIf you see this page, the nginx web server is successfully installed and
working. Further configuration is required./ppFor online documentation and support please refer to
a hrefhttp://nginx.org/nginx.org/a.br/
Commercial support is available at
a hrefhttp://nginx.com/nginx.com/a./ppemThank you for using nginx./em/p
/body
/html
root1c0baf2a2666:/#
2.4.4redis主从同步集群 2.4.4.1启动redis主节点容器
[rootroot ~]# docker run -d -p 6379:6379 --name redis01 --network mynet -v /app/rd1:/bitnami/reids/data -e REDIS_REPLICATION_MODEmaster -e REDIS_PASSWORD123456 bitnami/redis
Unable to find image bitnami/redis:latest locally
latest: Pulling from bitnami/redis
44f3255d2f6a: Pull complete
Digest: sha256:5261cae9e4076b75d114e6bb032a0699c50b004ea06a680a5304c4c08d286adb
Status: Downloaded newer image for bitnami/redis:latest
da79f3d15645162d71a0bd8891c5e55271a20332de052f2371b4f0333413c93f
[rootroot ~]#
2.4.4.2启动redis从节点容器
[rootroot ~]# docker run -d -p 6380:6379 --name redis02 --network mynet \-v /app/rd2:/bitnami/redis/data \-e REDIS_REPLICATION_MODEslave \-e REDIS_MASTER_HOSTredis01 \-e REDIS_MASTER_PORT_NUMBER6379 \-e REDIS_MASTER_PASSWORD123456 \-e REDIS_PASSWORD123456 \bitnami/redis
57aec20a231bf85265036efd1374801ef0cbdbf5a28e5c25d2e4d4c92767b18b
小插曲redis02启动报错。1:S 05 Jun 2024 04:59:18.559 # Cant open or create append-only dir appendonlydir: Permission denied
[rootroot ~]# docker logs redis02
redis 04:59:18.42 INFO
redis 04:59:18.42 INFO Welcome to the Bitnami redis container
redis 04:59:18.42 INFO Subscribe to project updates by watching https://github.com/bitnami/containers
redis 04:59:18.42 INFO Submit issues and feature requests at https://github.com/bitnami/containers/issues
redis 04:59:18.42 INFO Upgrade to Tanzu Application Catalog for production environments to access custom-configured and pre-packaged software components. Gain enhanced features, including Software Bill of Materials (SBOM), CVE scan result reports, and VEX documents. To learn more, visit https://bitnami.com/enterprise
redis 04:59:18.42 INFO
redis 04:59:18.43 INFO ** Starting Redis setup **
redis 04:59:18.44 INFO Initializing Redis
redis 04:59:18.45 INFO Setting Redis config file
redis 04:59:18.47 INFO Configuring replication moderedis 04:59:18.53 INFO ** Redis setup finished! **
redis 04:59:18.54 INFO ** Starting Redis **
1:C 05 Jun 2024 04:59:18.558 # WARNING Memory overcommit must be enabled! Without it, a background save or replication may fail under low memory condition. Being disabled, it can also cause failures without low memory condition, see https://github.com/jemalloc/jemalloc/issues/1328. To fix this issue add vm.overcommit_memory 1 to /etc/sysctl.conf and then reboot or run the command sysctl vm.overcommit_memory1 for this to take effect.
1:C 05 Jun 2024 04:59:18.558 * oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
1:C 05 Jun 2024 04:59:18.558 * Redis version7.2.5, bits64, commit00000000, modified0, pid1, just started
1:C 05 Jun 2024 04:59:18.558 * Configuration loaded
1:S 05 Jun 2024 04:59:18.558 * monotonic clock: POSIX clock_gettime
1:S 05 Jun 2024 04:59:18.559 * Running modestandalone, port6379.
1:S 05 Jun 2024 04:59:18.559 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
1:S 05 Jun 2024 04:59:18.559 * Server initialized
1:S 05 Jun 2024 04:59:18.559 # Cant open or create append-only dir appendonlydir: Permission denied
修改文件夹的权限
[rootroot app]# ll
总用量 12
drwxr-xr-x 2 root root 4096 6月 5 09:23 nghtml
drwxr-xr-x 2 root root 4096 6月 5 12:51 rd1
drwxr-xr-x 2 root root 4096 6月 5 12:59 rd2
[rootroot app]# ^C
[rootroot app]# ^C
[rootroot app]# chmod 777 rd2
[rootroot app]# ll
总用量 12
drwxr-xr-x 2 root root 4096 6月 5 09:23 nghtml
drwxr-xr-x 2 root root 4096 6月 5 12:51 rd1
drwxrwxrwx 2 root root 4096 6月 5 12:59 rd2
重启redis02
[rootroot app]# docker restart redis02
redis02
[rootroot app]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
57aec20a231b bitnami/redis /opt/bitnami/script… 7 minutes ago Up 3 seconds 0.0.0.0:6380-6379/tcp, :::6380-6379/tcp redis02
da79f3d15645 bitnami/redis /opt/bitnami/script… 15 minutes ago Up 15 minutes 0.0.0.0:6379-6379/tcp, :::6379-6379/tcp redis01
[rootroot app]#
