hotfix

Signed-off-by: haoshuwei <haoshuwei24@gmail.com>

examples/ack-aliyunlinux2.json

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+{
+  "variables": {
+    "region": "cn-hangzhou",
+    "image_name": "test_image{{timestamp}}",
+    "source_image": "aliyun_2_1903_x64_20G_uefi_alibase_20200616.vhd",
+    "instance_type": "ecs.g6.large",
+    "access_key": "{{env `ALICLOUD_ACCESS_KEY`}}",
+    "secret_key": "{{env `ALICLOUD_SECRET_KEY`}}"
+  },
+  "builders": [
+    {
+      "type": "alicloud-ecs",
+      "access_key": "{{user `access_key`}}",
+      "secret_key": "{{user `secret_key`}}",
+      "region": "{{user `region`}}",
+      "image_name": "{{user `image_name`}}",
+      "source_image": "{{user `source_image`}}",
+      "ssh_username": "root",
+      "instance_type": "{{user `instance_type`}}",
+      "skip_image_validation": "true",
+      "io_optimized": "true"
+    }
+  ],
+  "provisioners": [
+    {
+      "type": "shell",
+      "scripts": [
+        "scripts/updateKernel.sh",
+        "scripts/reboot.sh",
+        "scripts/cleanUpKerneles.sh",
+        "config/default.sh",
+        "scripts/verify.sh"
+      ],
+      "expect_disconnect": true
+    }
+  ]
+}

hotfix/hotfix-ipvlan/README.md

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+This is the template for ack base image to fix issue [#19](https://github.com/AliyunContainerService/ack-image-builder/issues/19)
+
+Commands to build image:
+```
+export ALICLOUD_ACCESS_KEY=XXX
+export ALICLOUD_SECRET_KEY=XXX
+packer build ack-aliyunlinux2-ipvlan.json
+```

hotfix/hotfix-ipvlan/ack-aliyunlinux2-ipvlan.json

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+{
+  "variables": {
+    "region": "cn-hangzhou",
+    "image_name": "test_image{{timestamp}}",
+    "source_image": "aliyun_2_1903_x64_20G_alibase_20200529.vhd",
+    "instance_type": "ecs.g6.large",
+    "access_key": "{{env `ALICLOUD_ACCESS_KEY`}}",
+    "secret_key": "{{env `ALICLOUD_SECRET_KEY`}}"
+  },
+  "builders": [
+    {
+      "type": "alicloud-ecs",
+      "access_key": "{{user `access_key`}}",
+      "secret_key": "{{user `secret_key`}}",
+      "region": "{{user `region`}}",
+      "image_name": "{{user `image_name`}}",
+      "source_image": "{{user `source_image`}}",
+      "ssh_username": "root",
+      "instance_type": "{{user `instance_type`}}",
+      "skip_image_validation": "true",
+      "io_optimized": "true"
+    }
+  ],
+  "provisioners": [
+    {
+      "type": "shell",
+      "scripts": [
+        "scripts/installRPMs.sh",
+        "scripts/updateConfig.sh"
+      ],
+      "expect_disconnect": true
+    }
+  ]
+}

hotfix/hotfix-ipvlan/scripts/installRPMs.sh

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+#!/bin/bash
+
+curl -LO http://xxx.xx.xx.xxx/kernel-4.19.91-0.1.git.6eb3a5047051.al7.x86_64.rpm
+curl -LO http://xxx.xx.xx.xxx/kernel-headers-4.19.91-0.1.git.6eb3a5047051.al7.x86_64.rpm
+
+yum localinstall -y kernel-4.19.91-0.1.git.6eb3a5047051.al7.x86_64.rpm kernel-headers-4.19.91-0.1.git.6eb3a5047051.al7.x86_64.rpm
+
+rm -rf kernel-4.19.91-0.1.git.6eb3a5047051.al7.x86_64.rpm kernel-headers-4.19.91-0.1.git.6eb3a5047051.al7.x86_64.rpm

hotfix/hotfix-ipvlan/scripts/updateConfig.sh

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+#!/bin/sh
+/usr/sbin/sysctl -w net.ipv4.vs.conn_reuse_mode=1
+# 如果压测出现客户端分配不到端口可以改成2
+EOF
+
+chmod +x /root/set-ipvs-sysctls.sh
+
+echo '*/1 * * * * root bash /root/set-ipvs-sysctls.sh' >> /etc/cron.d/setsysctl
+
+systemctl reload crond
+systemctl restart crond