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tanakaryotanakaryo
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Merge pull request #9 from tanakaryo/how-to-use-k8s
How to use k8s
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‎k8s/apps/app6/1pod-many-containers/Dockerfile

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FROM nginx:alpine
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COPY index.html /usr/share/nginx/html/index.html

‎k8s/apps/app6/1pod-many-containers/ch6_ipc/Dockerfile

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FROM ubuntu:latest
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RUN apt-get update && apt-get -y install gcc libc-dev
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COPY . /work/ipc
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WORKDIR /work/ipc
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RUN gcc -o ipc ipc.c -lrt
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ENTRYPOINT ["./ipc"]

‎k8s/apps/app6/1pod-many-containers/ch6_ipc/ipc.c

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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <mqueue.h>
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#define Q_NAME "/ch6_ipc"
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#define MAX_SIZE 1024
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#define M_EXIT "done"
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#define SRV_FLAG "-producer"
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int main(int argc, char *argv[])
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{
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if (argc < 2)
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{
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producer();
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}
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else if (argc >= 2 && 0 == strncmp(argv[1], SRV_FLAG, strlen(SRV_FLAG)))
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{
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producer();
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}
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else
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{
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consumer();
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}
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}
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int producer()
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{
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mqd_t mq;
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struct mq_attr attr;
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char buffer[MAX_SIZE];
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int msg, i;
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attr.mq_flags = 0;
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attr.mq_maxmsg = 10;
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attr.mq_msgsize = MAX_SIZE;
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attr.mq_curmsgs = 0;
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mq = mq_open(Q_NAME, O_CREAT | O_WRONLY, 0644, &attr);
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/* seed random */
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srand(time(NULL));
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i = 0;
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while (i < 500)
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{
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msg = rand() % 256;
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memset(buffer, 0, MAX_SIZE);
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sprintf(buffer, "%x", msg);
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printf("Produced: %s\n", buffer);
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fflush(stdout);
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mq_send(mq, buffer, MAX_SIZE, 0);
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i=i+1;
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}
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memset(buffer, 0, MAX_SIZE);
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sprintf(buffer, M_EXIT);
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mq_send(mq, buffer, MAX_SIZE, 0);
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mq_close(mq);
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mq_unlink(Q_NAME);
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return 0;
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}
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int consumer()
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{
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struct mq_attr attr;
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char buffer[MAX_SIZE + 1];
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ssize_t bytes_read;
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mqd_t mq = mq_open(Q_NAME, O_RDONLY);
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if ((mqd_t)-1 == mq) {
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printf("Either the producer has not been started or maybe I cannot access the same memory...\n");
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exit(1);
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}
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do {
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bytes_read = mq_receive(mq, buffer, MAX_SIZE, NULL);
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buffer[bytes_read] = '\0';
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printf("Consumed: %s\n", buffer);
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} while (0 != strncmp(buffer, M_EXIT, strlen(M_EXIT)));
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mq_close(mq);
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return 0;
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}

‎k8s/apps/app6/1pod-many-containers/index.html

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<!DOCTYPE html>
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<meta lang="ja">
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<head>
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<title>hello</title>
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</head>
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<body>
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<p>Hello,world.</p>
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</body>

‎k8s/apps/app6/1pod-many-containers/kind-cluster.yml

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apiVersion: kind.x-k8s.io/v1alpha4
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kind: Cluster
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nodes:
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- role: control-plane
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- role: worker
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- role: worker

‎k8s/apps/app6/1pod-many-containers/kustomization.yaml

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apiVersion: kustomize.config.k8s.io/v1beta1
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kind: Kustomization
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resources:
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- ./ns.yml
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- ./pod.yml
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- ./pod2.yml

‎k8s/apps/app6/1pod-many-containers/ns.yml

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apiVersion: v1
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kind: Namespace
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metadata:
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name: k8s-test

‎k8s/apps/app6/1pod-many-containers/pod.yml

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apiVersion: v1
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kind: Pod
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metadata:
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name: mc1
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namespace: k8s-test
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spec:
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volumes:
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- name: html
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emptyDir: {}
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containers:
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- name: 1st
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image: nginx
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volumeMounts:
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- name: html
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mountPath: /usr/share/nginx/html
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- name: 2nd
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image: debian
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volumeMounts:
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- name: html
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mountPath: /html
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command: ["/bin/sh", "-c"]
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args:
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- while true; do date >> /html/index.html; sleep 1; done

‎k8s/apps/app6/1pod-many-containers/pod2.yml

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apiVersion: v1
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kind: Pod
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metadata:
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name: mc2
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namespace: k8s-test
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spec:
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containers:
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- name: 1st
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image: allingeek/ch6_ipc:latest
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command: ["./ipc", "-producer"]
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imagePullPolicy: IfNotPresent
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- name: 2nd
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image: allingeek/ch6_ipc:latest
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command: ["./ipc", "-consumer"]
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imagePullPolicy: IfNotPresent
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restartPolicy: Never

‎k8s/apps/app6/envoy-test/envoy-demo.yaml

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static_resources:
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listeners:
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- name: listener_0
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address:
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socket_address:
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address: 0.0.0.0
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port_value: 10000
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filter_chains:
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- filters:
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- name: envoy.filters.network.http_connection_manager
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
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stat_prefix: ingress_http
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access_log:
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- name: envoy.access_loggers.stdout
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.access_loggers.stream.v3.StdoutAccessLog
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http_filters:
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- name: envoy.filters.http.router
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
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route_config:
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name: local_route
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virtual_hosts:
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- name: local_service
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domains: ["*"]
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routes:
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- match:
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prefix: "/"
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route:
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host_rewrite_literal: www.envoyproxy.io
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cluster: service_envoyproxy_io
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clusters:
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- name: service_envoyproxy_io
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type: LOGICAL_DNS
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# Comment out the following line to test on v6 networks
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dns_lookup_family: V4_ONLY
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load_assignment:
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cluster_name: service_envoyproxy_io
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endpoints:
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- lb_endpoints:
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- endpoint:
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address:
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socket_address:
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address: www.envoyproxy.io
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port_value: 443
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transport_socket:
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name: envoy.transport_sockets.tls
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typed_config:
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"@type": type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.UpstreamTlsContext
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sni: www.envoyproxy.io

‎k8s/apps/app6/envoy-test/envoy-override.yaml

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admin:
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address:
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socket_address:
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address: 127.0.0.1
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port_value: 9902

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