CloudWatchエージェント連携
Site24x7 CloudWatchエージェントはAmazon Elastic Compute Cloud (EC2)インスタンスから詳細なデータを取得します。
CloudWatchエージェントを使用した監視の必要条件
CloudWatchエージェントネームスペース
Site24x7はデフォルトのネームスペースCWAgentに従って、Amazon CloudWatchからメトリックを収集します。カスタマイズされたネームスペースの場合は、デフォルトの状態に修正する必要があります。
CloudWatchエージェント設定ウィザードにディメンションを追加
Site24x7は次のディメンションを用いてメトリックを取得します。
- ImageId
- InstanceId
- InstanceType
CloudWatchからのメトリック収集のため、上記ディメンションを有効化してください。
ポリシーと権限
次の読み取り専用権限を有効にします。
CloudWatchエージェントポリシー
- CloudWatchAgentAdminPolicy
- CloudWatchAgentServerPolicy
EC2権限
- "ec2:DescribeInstances"
- "ec2:DescribeImages"
CloudWatch権限
- "cloudwatch:GetMetricData"
- "cloudwatch:GetMetricStatistics"
- "cloudwatch:ListMetrics"
Site24x7でCloudWatchエージェントを有効化
- Site24x7にログインし、Cloud > AWS > your AWSアカウント > アドバンス設定の順にアクセスします。
- EC2 CloudWatchエージェントの有効化をはいにします。
デフォルトでこのオプションは、既存ユーザーでは「いいえ」に設定されており、新規ユーザーでは「はい」に設定されています。
基準
- Site24x7サーバー監視エージェントがすでにEC2サーバーと連携されている場合、CloudWatchエージェントは連携できません。
- CloudWatchエージェントがEC2サーバーと連携されている場合、Site24x7サーバー監視エージェントとは連携できません。
Supported metrics
CloudWatch agent for Windows
| Metric | Description | Unit |
| Memory % Committed Bytes In Use | The percent of memory currently committed and in use | Percentage |
| Logical Disk % Free Space | The percent of free memory remaining on the logical disk | Percentage |
| Paging File % Usage | The percent of free memory remaining on the paging file | Percentage |
| Processor % Idle Time | The unused free processor or CPU capacity | Percentage |
| Processor % Interrupt Time | The time the processor spent receiving and servicing hardware interrupts during sample intervals | Percentage |
| Processor % User Time | The percent of time the processor spent executing in user mode | Percentage |
| Physical Disk % Disk Time | The percent of time the selected disk drive was busy servicing read or write requests | Percentage |
| Physical Disk Write | Disk write throughput per second | Bytes/sec |
| Physical Disk Read | Disk read throughput per second | Bytes/sec |
| Physical Disk Writes/sec | Disk write operations per second (IOPS that are write operations) | Writes/sec |
| Physical Disk Reads/sec | Disk read operations per second (IOPS that are read operations) | Reads/sec |
| TCPv4 Connections Established | The total number of TCP v4 connections established | Count |
| TCPv6 Connections Established | The total number of TCP v6 connections established | Count |
CloudWatch agent for Linux or Unix
| Metric | Description | Unit |
| Memory Used | The percent of memory currently in use | Percentage |
| Swap Space Used | The percent of swap space currently in use | Percentage |
| Free Disk Inodes | The number of available index nodes on the disk | Count |
| Used Disk | The percent of total disk space in use | Percentage |
| Disk I/O Time | The amount of time the disk has had I/O requests queued | Milliseconds |
| Disk I/O Write in Bytes | The number of bytes written to the disk | Bytes |
| Disk I/O Read in Bytes | The number of bytes read from the disk | Bytes |
| Disk I/O Write Count | The number of disk write operations | Count |
| Disk I/O Read Count | The number of disk read operations | Count |
| CPU Usage Idle | The percent of time the CPU is idle | Percentage |
| CPU Usage I/O Wait | The percent of time the CPU is waiting for I/O operations to complete | Percentage |
| CPU Usage User | The percent of time the CPU is in user mode | Percentage |
| CPU Usage System | The percent of time the CPU is in system mode | Percentage |
| Netstat TCP Established | The number of TCP connections established | Count |
| Netstat TCP Time Wait | The number of TCP connections currently waiting to ensure that the client received the acknowledgement of its connection termination request | Count |
Licensing
The CloudWatch agent integration with EC2 servers can be used for free in Site24x7.