ロードバランスlog-未解決-誰かトラシューして

sudo apt install ipvsadm

sudo ipvsadm -C

sudo ipvsadm -A -t 192.168.100.222:80 -s wrr  # VIPとポート80を追加、重みつきラウンドロビン方式
sudo ipvsadm -a -t 192.168.100.222:80 -r 192.168.100.155:80 -m  # GS-01
sudo ipvsadm -a -t 192.168.100.222:80 -r 192.168.100.152:80 -m  # GS-02

user@lb-01:/opt/nginx-l4$ sudo ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.100.222:80 rr
  -> 192.168.100.152:80           Masq    1      0          0         
  -> 192.168.100.155:80           Masq    1      0          0   

user@lb-01:/opt/nginx-l4$ sudo su -
root@lb-01:~# ipvsadm-save > /etc/sysconfig/ipvsadm
or
sudo service ipvsadm save
# ???
# /etc/ipvsadm.rules にいい感じ

もっとセーブ ?sudo nano /etc/default/ipvsadm（いらない

# ipvsadm

# if you want to start ipvsadm on boot set this to true
AUTO="true"

# daemon method (none|master|backup)
DAEMON="master"

# use interface (eth0,eth1...)
IFACE="eno1"

# syncid to use 
# (0 means no filtering of syncids happen, that is the default)
# SYNCID="0"

user@lb-01:/opt/nginx-l4$ sudo systemctl enable ipvsadm
ipvsadm.service is not a native service, redirecting to systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable ipvsadm
user@lb-01:/opt/nginx-l4$ sudo systemctl status ipvsadm
● ipvsadm.service - LSB: ipvsadm daemon
     Loaded: loaded (/etc/init.d/ipvsadm; generated)
     Active: active (exited) since Fri 2024-12-06 12:56:20 JST; 3h 11min ago
       Docs: man:systemd-sysv-generator(8)
      Tasks: 0 (limit: 18852)
     Memory: 0B
     CGroup: /system.slice/ipvsadm.service

12月 06 12:56:20 lb-01 systemd[1]: Starting LSB: ipvsadm daemon...
12月 06 12:56:20 lb-01 ipvsadm[1079]:  * ipvsadm is not configured to run. Please edit /etc/default/ipv>
12月 06 12:56:20 lb-01 systemd[1]: Started LSB: ipvsadm daemon.

user@lb-01:/etc/keepalived$ sudo systemctl status ipvsadm
● ipvsadm.service - LSB: ipvsadm daemon
     Loaded: loaded (/etc/init.d/ipvsadm; generated)
     Active: active (exited) since Fri 2024-12-06 18:29:39 JST; 2min 16s ago
       Docs: man:systemd-sysv-generator(8)
    Process: 27176 ExecStart=/etc/init.d/ipvsadm start (code=exited, status=0/SUCCESS)

12月 06 18:29:39 lb-01 systemd[1]: Starting LSB: ipvsadm daemon...
12月 06 18:29:39 lb-01 ipvsadm[27176]:  * Clearing the current IPVS table...
12月 06 18:29:39 lb-01 ipvsadm[27176]:    ...done.
12月 06 18:29:39 lb-01 ipvsadm[27176]:  * Loading IPVS configuration...
12月 06 18:29:39 lb-01 ipvsadm[27176]:    ...done.
12月 06 18:29:39 lb-01 ipvsadm[27176]:  * Starting IPVS Connection Synchronization Daemon master
12月 06 18:29:39 lb-01 ipvsadm[27176]:    ...done.
12月 06 18:29:39 lb-01 systemd[1]: Started LSB: ipvsadm daemon.
user@lb-01:/etc/keepalived$ 

vrrp_instance VI_1 {
    state MASTER
    interface eno1
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 12345
    }
    virtual_ipaddress {
        192.168.100.222  # 仮想IP
    }
}

~~~

virtual_server 192.168.100.222 80 {
    delay_loop 5  # ポーリング間隔
    lb_algo rr    # ラウンドロビン
    lb_kind NAT   # NATモード
    persistence_timeout 50
    protocol TCP

    real_server 192.168.100.155 80 {
        weight 1
        MISC_CHECK {
            misc_path "/etc/keepalived/check_gs01.sh"
            misc_timeout 5
            misc_dynamic
            user root
        }
    }

    real_server 192.168.100.152 80 {
        weight 1
        MISC_CHECK {
            misc_path "/etc/keepalived/check_gs02.sh"
            misc_timeout 5
            misc_dynamic
            user root
        }
    }
}

#!/bin/bash
curl -s --max-time 2 http://192.168.100.152:80 > /dev/null
if [ $? -ne 0 ]; then
    exit 1
fi
exit 0

#!/bin/bash

# CPU使用率を取得（1分平均の負荷）
CPU_LOAD=$(ssh -o ConnectTimeout=3 root@192.168.100.152 "awk '{print $1}' /proc/loadavg")
CPU_THRESHOLD=2.0  # 負荷の閾値（例：2.0）

# CPU負荷が閾値を超えた場合、異常を通知
if (( $(echo "$CPU_LOAD > $CPU_THRESHOLD" | bc -l) )); then
    exit 1  # 異常状態
fi

exit 0  # 正常状態

#!/bin/bash

CPU_LOAD=$(ssh -o ConnectTimeout=3 root@192.168.100.155 "awk '{print $1}' /proc/loadavg")
if [ $? -ne 0 ]; then
    echo "Failed to connect to 192.168.100.155"
    exit 1 # ssh失敗
fi

CPU_THRESHOLD=2.0
if (( $(echo "$CPU_LOAD > $CPU_THRESHOLD" | bc -l) )); then
    echo "CPU load too high: $CPU_LOAD"
    exit 1 # CPUやばい
fi

echo "CPU load normal: $CPU_LOAD"
exit 0

user@lb-01:/etc/netplan$ sudo chmod +x /etc/keepalived/check_gs01.sh
user@lb-01:/etc/netplan$ sudo chmod +x /etc/keepalived/check_gs02.sh

// チェック これ信用な~~らん~~る
keepalived -t

sudo systemctl restart keepalived

#!/bin/bash

# リモートホスト情報
HOST="192.168.100.155"
USER="user"
THRESHOLD=80

# SSHコマンド
OUTPUT=$(ssh -o ConnectTimeout=3 ${USER}@${HOST} "free | awk '/Mem:/ {print \$3/\$2*100}'" 2>/dev/null)

# SSH接続失敗時の処理
if [ $? -ne 0 ]; then
    echo "Failed to connect to ${HOST}."
    exit 1
fi

# メモリ使用量の計算と評価
MEMORY_USAGE=$(printf "%.0f" "${OUTPUT}")
if [ -z "${MEMORY_USAGE}" ]; then
    echo "Failed to retrieve memory usage from ${HOST}."
    exit 1
fi

if [ "${MEMORY_USAGE}" -ge "${THRESHOLD}" ]; then
    echo "Memory usage too high: ${MEMORY_USAGE}% on ${HOST}."
    exit 1
else
    echo "Memory usage normal: ${MEMORY_USAGE}% on ${HOST}."
    exit 0
fi

sudo apt remove keepalived

apt-get install curl gcc libssl-dev libnl-3-dev libnl-genl-3-dev libsnmp-dev


wget https://www.keepalived.org/software/keepalived-2.3.2.tar.gz
tar -xzf keepalived-2.3.2.tar.gz
cd keepalived-2.3.2
./configure

#!/bin/bash

# ログファイルパス
LOGFILE="/var/log/keepalived/check_gs01.log"

# リモートホスト情報
HOST="192.168.100.152"
USER="user"
PASSWORD="wfer3K5V"
THRESHOLD=50

# SSHコマンド
OUTPUT=$(sshpass -p "${PASSWORD}" ssh -o ConnectTimeout=3 -o StrictHostKeyChecking=no ${USER}@${HOST} "free | awk '/Mem:/ {print \$3/\$2*100}'" 2>/dev/null)

# SSH接続失敗時の処理
if [ $? -ne 0 ]; then
    echo "$(date): Failed to connect to ${HOST}." >> "${LOGFILE}"
    exit 1
fi

# メモリ使用量の計算と評価
MEMORY_USAGE=$(printf "%.0f" "${OUTPUT}")
if [ -z "${MEMORY_USAGE}" ]; then
    echo "$(date): Failed to retrieve memory usage from ${HOST}." >> "${LOGFILE}"
    exit 1
fi

if [ "${MEMORY_USAGE}" -ge "${THRESHOLD}" ]; then
    echo "$(date): Memory usage too high: ${MEMORY_USAGE}% on ${HOST}." >> "${LOGFILE}"
    exit 1
else
    echo "$(date): Memory usage normal: ${MEMORY_USAGE}% on ${HOST}." >> "${LOGFILE}"
    exit 0
fi