K8S YAML文件

以下几个例子包括三个模板：ConfigMap、Deployment、Service，ConfigMap是用来添加程序启动配置文件的，Deployment定义容器主程序（包括镜像、挂载文件、容器内所用端口等），Service定义了容器端口映射，其中 targetPort 指定容器内与宿主机间端口映射关系， nodePort 指定与宿主机外网间的端口映射关系。例子1：里边涉及到配置文件映射、文件夹映射

LaugustusJ

780人浏览 · 2020-09-25 16:09:43

LaugustusJ · 2020-09-25 16:09:43 发布

例子1：（配置文件映射、文件夹映射、端口映射）

例子2：（持久化）

例子3：（容器时间）

例子4：（mysql最大连接数）

例子1：（配置文件映射、文件夹映射、端口映射）

里边涉及到配置文件映射、文件夹映射、端口映射

apiVersion: v1
kind: ConfigMap #configmap文件（主要用来映射文本文件的）
metadata:
name: media-sipgw-config #configmap名字，后边Deployment用configmap时，直接用此名字来指代它
data:
sipgw.ini: |+ #要映射的配置文件名字+内容
[SRV]
server_id =200
local_ip = 127.0.0.1
nvr_svr = 1
opensips_port = 30111
sipgw_password = 123456
sdp_number = 0
[SIP]
sip_ip = 192.168.105.131
sip_port = 5061
rtp_port = 30133
sip_id = 34020000002000000001
call_use_tcp = 0
[REDIS]
redis_ip = redis
redis_port = 6379
redis_pass =
[RECORD]
record_ip = 0.0.0.0
record_port = 8383
http_ip = 0.0.0.0
http_port = 18081
[LOGINFO]
#LOGCRIT = 0, LOGERROR=1, LOGWARNING=2, LOGINFO=3, LOGDEBUG=4, LOGDEBUG2=5, LOGALL=6
log_level = 4
[ERROR_JUDGE]
allow_time = 2
allow_invite_times = 4
[RECYCLE]
auto_recycle_span = 60
max_streams = 100
visualipc.ini: |+
[SRV]
server_id =200
local_ip = 127.0.0.1
rtp_server_ip_wan = 172.21.138.154
rtp_server_port = 30122
nvr_svr = 0
max_pushers = 10
usleep_goon_span = 40
usleep_stop_span = 1
memory_length = 100000
[SIP]
sip_ip = 172.21.138.154
sip_port = 5062
sip_id = 34020000001110000001
[REDIS]
redis_ip = 172.21.138.150
redis_port = 30004
redis_pass =
[RECORD]
record_ip = 0.0.0.0
record_port = 8383
http_ip = 0.0.0.0
http_port = 18088
[LOGINFO]
#LOGCRIT = 0, LOGERROR=1, LOGWARNING=2, LOGINFO=3, LOGDEBUG=4, LOGDEBUG2=5, LOGALL=6
log_level = 4
[ERROR_JUDGE]
allow_time = 2
allow_invite_times = 4
[RECYCLE]
auto_recycle_span = 0
max_streams = 500
run.sh: |+ #启动脚本
#!/bin/bash
cd /opt/monit
cp ./config/sipgw.ini .
cp ./config/visualipc.ini .
chmod 777 *
#nohup ./visualipc >/dev/null 2>&1 &
./sipgw
tail -f /dev/null
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: media-sipgw
labels:
app: media-sipgw
spec:
replicas: 1
selector:
matchLabels:
app: media-sipgw
template:
metadata:
labels:
app: media-sipgw
spec:
containers:
- name: media-sipgw
image: local.harbor.com/library/sipgw:dev-2.4
imagePullPolicy: IfNotPresent #镜像拉取规则
command: ["sh", "/opt/monit/config/run.sh"] #启动命令
imagePullPolicy: IfNotPresent
ports:
- containerPort: 18081 #容器内部所用到的端口
- containerPort: 30122
volumeMounts:
- name: media-sipgw-config
mountPath: "/opt/monit/config" #配置文件要映射到的目录（如果容器由此目录，会直接覆盖）
- name: media-sipgw-mount
mountPath: "/home/mount" #挂载文件夹（容器内部的文件夹）可以实现将主机上一文件夹挂载到容器内部
resources: #资源限制
requests:
cpu: "500m"
memory: "1000Mi"
limits:
cpu: "500m"
memory: "1000Mi"
volumes:
- name: media-sipgw-config
configMap:
name: media-sipgw-config #ConfigMap的名字
- name: media-sipgw-mount
hostPath:
path: /home/media-mount/sipgw #挂载文件夹所在宿主机文件夹（此方法能够实现持久化）
nodeSelector:
kubernetes.io/hostname: "global-node-02" #指定宿主机，global-node-02是其节点名称
---
apiVersion: v1
kind: Service #端口映射
metadata:
name: media-sipgw
labels:
app: media-sipgw
spec:
type: NodePort
ports:
- port: 18081
protocol: TCP
nodePort: 30121 #映射到主机外的端口
targetPort: 18081 #容器间的端口
name: sipgw1-1
- port: 30122
protocol: UDP
nodePort: 30122
targetPort: 30122
name: sipgw1-2
selector:
app: media-sipgw

例子2：（持久化）

mysql 模板，可实现持久化

apiVersion: apps/v1
kind: Deployment
metadata:
name: media-mysql
labels:
app: media-mysql
spec:
replicas: 1
selector:
matchLabels:
app: media-mysql
template:
metadata:
labels:
app: media-mysql
spec:
nodeSelector:
kubernetes.io/hostname: "global-node-02"
containers:
- name: media-mysql
image: local.harbor.com/library/mysql:8.0.11
imagePullPolicy: IfNotPresent
ports:
- containerPort: 3306
env:
- name: MYSQL_ROOT_PASSWORD #设置 mysql 密码的环境变量，更多可以从docker habor上查找
value: "1234.com" #密码
volumeMounts:
- mountPath: /var/lib/mysql #docker内路径（mysql默认存储路径，尽量不要修改）
name: data
volumes:
- name: data
hostPath:
path: /home/media-mount/mysql #宿主
---
apiVersion: v1
kind: Service
metadata:
name: media-mysql
labels:
app: media-mysql
spec:
type: NodePort
ports:
- port: 3306
targetPort: 3306
nodePort: 30151
selector:
app: media-mysql
--- #若仅仅是容器内部访问，则可以用ClusterIP
apiVersion: v1
kind: Service
metadata:
name: media-mysql
labels:
app: media-mysql
spec:
type: ClusterIP
ports:
- port: 3306
targetPort: 3306
selector:
app: media-mysql

k8s命令：

创建： kubectl create -f ***.yaml
删除：kubectl delete -f ***.yaml
查看deployment：kubectl get deploy
查看service--可以查看映射端口：kubectl get svc
查看service--可以查看映射端口：kubectl get svc
进入容器：kubectl exec -it *** bash/sh
查看pod启动日志：kubectl describe pod ***
查看容器打印在控制台的日志：kubectl logs podname

若想telnet测试容器端口连通性，需要进到busybox内，用telnet测试

例子3：（容器时间）

设置容器时间与宿主机一致

apiVersion: v1
kind: ConfigMap
metadata:
name: media-warning-config
data:
config_warning.ini: |+
[server]
port=8135
callback= http://23.166.0.179/command/video/callback
statusurl = http://23.166.0.179/async/vpaas/equipment/command/updatePlatformStatus
querycallback = http://23.166.0.179/command/video/callback
controlcallback = http://23.166.0.179/command/video/callback
qualitycallback = http://23.166.0.179/command/video/callback
rtspwarning = http://23.166.0.179/command/video/callback
platreport = http://23.166.0.179/command/video/callback/%d/%s
catlogurl = http://23.166.0.179/async/vpaas/equipment/command/callback
platrtspurl = http://23.166.0.179/async/vpaas/vedio/command/callback
[redis]
host = redis-media
port = 6379
password= vpaas123
db = 0
[mysql]
host =media-mysql-5-7
port =3306
db= fengdu-broacast
username = root
password = 1234.com
[sipgw]
sipgwHost = media-sipgw
[time_limit]
callback_time_limit = 10
config.ini: |+
[server]
port=8136
hlssrv=23.166.0.179:8005
downloadurl=http://23.166.0.179/mp4/
callbackurl =http://23.166.0.179/vpaas/media/pushDownloadStatus/
[ffmpeg]
path=/usr/sbin/ffmpeg
outpath=/data/wwwroot/23.166.0.179/web/mp4/
run.sh: |+
#!/bin/bash
cd /data/warning
cp ./config/config_warning.ini .
cp ./config/config.ini .
chmod 777 *
#nohup ./convert >/dev/null 2>&1 &
./warning
#tail -f /dev/null
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: media-warning
labels:
app: media-warning
spec:
replicas: 1
selector:
matchLabels:
app: media-warning
template:
metadata:
labels:
app: media-warning
spec:
containers:
- name: media-warning
image: local.registry.com/media/warning:dev-3.2
command: ["sh", "/data/warning/config/run.sh"]
imagePullPolicy: IfNotPresent
ports:
- containerPort: 8135
- containerPort: 8136
volumeMounts:
- name: media-warning-config
mountPath: "/data/warning/config"
- name: media-warning-mount
mountPath: "/home/mount"
- name: host-time
readOnly: true
mountPath: /etc/localtime
volumes:
- name: media-warning-config
configMap:
name: media-warning-config
- name: media-warning-mount
hostPath:
path: /home/media-mount/warning
- name: host-time
hostPath:
path: /etc/localtime
type: ''
---
apiVersion: v1
kind: Service
metadata:
name: media-warning
labels:
app: media-warning
spec:
type: NodePort
ports:
- port: 8135
protocol: TCP
nodePort: 30143
targetPort: 8135
name: warning-1
- port: 8136
protocol: TCP
nodePort: 30144
targetPort: 8136
name: warning-2
selector:
app: media-warning

设置宿主机或容器的时区可以通过更改 /etc/localtime 内容来实现的，比如直接在宿主机执行 cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtimedate即可

这个例子是直接将宿主机上的 /etc/localtime 文件映射到容器内部的 /etc/localtime，这样就完成容器与宿主机时间同步的问题

例子4：（mysql最大连接数）

设置mysql 的最大连接数（大部分与例子3的一致，只是增加了mysql.cnf文件的挂载）

apiVersion: v1
kind: ConfigMap
metadata:
name: media-mysql-config
data:
mysql.cnf: |+
[mysqld]
max_connections=1000
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: media-mysql-5-7
labels:
app: media-mysql-5-7
spec:
replicas: 1
selector:
matchLabels:
app: media-mysql-5-7
template:
metadata:
labels:
app: media-mysql-5-7
spec:
containers:
- name: media-mysql-5-7
image: local.registry.com/media/mysql:5.7
imagePullPolicy: IfNotPresent
ports:
- containerPort: 3306
env:
- name: MYSQL_ROOT_PASSWORD
value: "1234.com"
volumeMounts:
- mountPath: /var/lib/mysql
name: data
- name: host-time
readOnly: true
mountPath: /etc/localtime
- name: media-mysql-config
mountPath: "/etc/mysql/conf.d"
volumes:
- name: data
hostPath:
path: /home/media-mount/mysql-5.7
- name: host-time
hostPath:
path: /etc/localtime
type: ''
- name: media-mysql-config
configMap:
name: media-mysql-config
nodeSelector:
kubernetes.io/hostname: "master02-test"
---
apiVersion: v1
kind: Service
metadata:
name: media-mysql-5-7
labels:
app: media-mysql-5-7
spec:
type: NodePort
ports:
- port: 3306
nodePort: 30152
selector:
app: media-mysql-5-7

查看mysql当前最大连接数：在mysql里边运行 show variables like '%max_connections%';（参考：https://my.oschina.net/yoblue/blog/1154196）

一般更改mysql最大连接数是将 /etc/mysql/conf.d/mysql.cnf 的内容改为：（参考：https://blog.csdn.net/wangmiaoyan/article/details/103676232）

[mysqld]
max_connections=1000

所以yaml文件直接将此文件映射到了 mysql 容器对应的目录了

加host：（与containers对应）

hostAliases:
- hostnames:
- rsf-qos.kodo.zywl.cn
- io-qos.kodo.zywl.cn
- api-qos.kodo.zywl.cn
- up-qos.kodo.zywl.cn
- video-dev.kodo.zywl.cn
- rs-qos.kodo.zywl.cn
ip: 192.168.105.80

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