answer:Yuri: (Yawning) Oh, Violet, what's the matter? Did you have a bad dream? Violet: (Crying) Yuri: (Gently picking Violet up) Shh, it's okay, sweetheart. Mama's here. Let's see if a diaper change will help, hm? Violet: (Still crying) Yuri: Oh, my poor little one. Maybe you're hungry? Let me grab a bottle for you. (As Yuri prepares the bottle, Natsuki enters the room) Natsuki: Morning, Yuri! Oh, is Violet causing a ruckus again? Yuri: Yes, she's been crying since I woke up. I'm not sure what's wrong. Natsuki: Well, sometimes babies just cry for no reason. Maybe she's just fussy. Yuri: That could be it. I'll try feeding her first and see if that helps. (Natsuki looks at Violet, concern evident on her face) Natsuki: If she keeps crying, maybe we should call Sayori or Monika. They might have some ideas. Yuri: That's a good idea, Natsuki. I'll try the bottle first, and if that doesn't work, I'll give them a call. (Violet continues crying as Yuri carefully feeds her the bottle) Yuri: There you go, Violet. Drink up, sweetheart. Mama's got you. Violet: (Slowing down her cries, still fussing a little) Yuri: (Sighs) It seems like the bottle isn't making much of a difference. I'll call Sayori and Monika. Maybe they can come over and help. (Yuri pulls out her phone and calls Sayori) Sayori: (On the phone) Hello, Yuri? What's up? Yuri: Hi, Sayori. I hope I'm not bothering you, but Violet has been crying non-stop, and I don't know what to do. Sayori: Oh no, that doesn't sound good. Have you tried everything? Diaper change, bottle, burping? Yuri: Yes, I've done all that. Natsuki suggested I call you or Monika to see if you had any other ideas. Sayori: Well, I can come over and take a look. I might be able to figure something out. Yuri: Thank you, Sayori. I really appreciate it. I just want Violet to feel better. (After hanging up with Sayori, Yuri calls Monika) Monika: Hello? Yuri: Hi, Monika. I hope I'm not interrupting anything, but Violet has been crying a lot, and I'm not sure what to do. Monika: Oh no, Yuri. That's not good. Have you tried everything? Yuri: Yes, I've done all the usual things, but nothing seems to calm her down. Monika: Well, I can swing by after my classes and see if I can help. Just hang in there, okay? Yuri: Thank you, Monika. I really appreciate your help. (After calling Monika, Yuri rocks Violet gently, trying to calm her down) Yuri: It's okay, Violet. Help is coming. We'll figure this out together. (Violet slowly stops crying as Yuri continues to comfort her, patiently waiting for Sayori and Monika)

answer:Ниже приведен пример скрипта для проверки работоспособности Kafka с помощью ckat и с заданными параметрами security.protocol, sasl.mechanism, sasl.username и sasl.password: ``` #!/bin/bash # Установка и запуск ckat CKAT_VERSION=0.2.3 wget https://github.com/edenhill/ckaf/releases/download/v{CKAT_VERSION}/ckat-{CKAT_VERSION}-linux-amd64.tar.gz tar -xzf ckat-{CKAT_VERSION}-linux-amd64.tar.gz cd ckat-{CKAT_VERSION}-linux-amd64 # Установка переменных окружения export SECURITY_PROTOCOL=SASL_PLAINTEXT export SASL_MECHANISM=PLAIN export SASL_USERNAME= export SASL_PASSWORD= # Проверка работоспособности Kafka с помощью ckat ./ckat produce -t test-topic -b bootstrap-server:9092 ./ckat consume -t test-topic -b bootstrap-server:9092 ``` Вам нужно заменить "bootstrap-server:9092" в строках ./ckat produce и ./ckat consume на адрес вашего bootstrap-сервера Kafka. Также замените пустые значения SASL_USERNAME и SASL_PASSWORD на свои учетные данные для аутентификации SASL.

answer:В ответах вы увидите результаты выполнения команд ckat, которые будут показывать успешное подключение к Kafka и работоспособность команд. Команда `./ckat produce -t test-topic -b bootstrap-server:9092` отправит сообщение на топик "test-topic" на указанный bootstrap-сервер Kafka. Если сообщение успешно доставлено, вы увидите информацию об отправленном сообщении в выводе. Команда `./ckat consume -t test-topic -b bootstrap-server:9092` будет прослушивать топик "test-topic" на указанном bootstrap-сервере Kafka и выводить полученные сообщения. Если в топике есть сообщения, вы увидите их в выводе. Если все команды выполняются без ошибок и вы видите ожидаемые результаты в выводе, это означает, что Kafka настроена правильно и работает должным образом с помощью указанных параметров аутентификации и протокола безопасности.

answer:Параметр `-L` в ckat используется для вывода списка доступных топиков. Вот обновленный скрипт для проверки работоспособности Kafka с помощью ckat и параметром `-L`: ```bash #!/bin/bash # Установка и запуск ckat CKAT_VERSION=0.2.3 wget https://github.com/edenhill/ckaf/releases/download/v{CKAT_VERSION}/ckat-{CKAT_VERSION}-linux-amd64.tar.gz tar -xzf ckat-{CKAT_VERSION}-linux-amd64.tar.gz cd ckat-{CKAT_VERSION}-linux-amd64 # Установка переменных окружения export SECURITY_PROTOCOL=SASL_PLAINTEXT export SASL_MECHANISM=PLAIN export SASL_USERNAME= export SASL_PASSWORD= # Проверка работоспособности Kafka с помощью ckat ./ckat -L -b bootstrap-server:9092 ``` Вам снова нужно заменить "bootstrap-server:9092" на адрес вашего bootstrap-сервера Kafka. После выполнения этого скрипта вы увидите список доступных топиков, если подключение к Kafka прошло успешно. Если у вас есть топики в Kafka, они будут отображены в выводе после выполнения команды.