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Trace: • 29 Ceph Dashboard • 02 bnx2xゲストVMのネットワークが遅すぎる • 2021.08.20 XShell 永続ライセンス • Nagios外部コマンド • swapスペースを追加する方法 • 03 自動で定義済みの定数 • 07 route add Windows • 06 MEMCPU • 2021.08.03 KVM IOPS limit • 2025.03.20 Zed Keymap

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  • 10 CentOS PPTP VPN

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55 corosync pacemaker
61 Hits, Last modified: 9 years ago
号機|VIP| ^ HostName|node01|node02|node03| ^Global|10.100.10.11|10.100.10.12|10.100.10.13|10.100.10.10| ^Local01|172.16.10.11|172.16.10.12|172.16.10.13|172.16.10.
22 ipvsadm と ldirectord
30 Hits, Last modified: 11 years ago
orward Weight ActiveConn InActConn TCP 192.168.0.10:80 wrr -> 127.0.0.1:80 Local 1 0 0 TCP 1192.168.0.10:443 wrr -> 127.0.0.1:443 Local ... ケジュールオプション] [バランスアルゴリズム] </code> === 例 === VIP: 10.1.0.100のポート80番を負荷の少ないサーバへリクエストを飛ばす <code console> # ipvsadm -A -t 10.1.0.100:80 -s lc </code> UDPの場
23 LVS on CloudStack
29 Hits, Last modified: 7 years ago
| Virtual Router | +----+-----------+ | 10.1.0.1/24 GW | -----+------ 10.1.0.0/24 ------+-------------------+-------- | ... | | | eth0 10.1.0.10/24 | | | eth0:0 10.1.0.100/24 | eth0 10.1.0.150 | eth0 10.1.
CentOS - Nat
18 Hits, Last modified: 10 years ago
c/sys/net/ipv4/ip_forward 下記の状態で、eth1側から192.168.100.0/24からのアクセスだけIPマスカレードする。 |eth0|グローバル側|10.10.10.76| |eth1|ローカル側|192.168.100.76| <code console> iptables -P FORWARD DROP iptables -t nat -A POSTR
40 CentOS VLAN tag
14 Hits, Last modified: 12 years ago
グ番号210を追加 === <code console> # vconfig add eth0 210 </code> ==== 2.IPアドレスの追加 ==== 追加したVLANインターフェースに... IPを追加して通信を確認してみる。 <code console> # ifconfig eth0.210 10.11.12.13 netmask 255.255.255.0 </code> ==== 3.VLANインターフェース削除 ==== <box left orange round> vconfi... Nタグ番号210を削除 === <code console> vconfig rem eth0.210 </code> ==== 4.VLANの確認 ==== <code console> # ca
51 Heartbeat + Pacemaker + galera(3 server)
14 Hits, Last modified: 10 years ago
era(3 server) ====== ^ host ^ IP ^ |galera-1|10.0.0.11| |galera-2|10.0.0.12| |galera-3|10.0.0.13| <code> | | vip: 10.0.0.10 +----------------+-----------------+
09 Heartbeat
10 Hits, Last modified: 13 years ago
me 30 initdead 120 udpport 694 ucast eth1 192.168.10.2 auto_failback off node test1 node test2 </code>... st名と、VIPを指定</color> <code> test1 IPaddr::192.168.10.10/24/eth1 </code> ==== /etc/ha.d/authkeys ==== <code console> # vi /etc/ha.d/authkeys auth 2 2 sha... /code> ==== /etc/hosts ==== 以下追加 <code> 192.168.10.1 test1 192.168.10.2 test2 </code>
62 CentOS OpenVPNブリッジ接続
8 Hits, Last modified: 12 years ago
 VPNインタフェースとしてTAPを指定 ;dev tun ← コメントアウト ;server 10.8.0.0 255.255.255.0 ← コメントアウト server-bridge 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100 ← Bridge IP 10.8.0.4を指定し、クライアントを10.8.0.50-100割り当て push "route 192.168.1.0 255.255.
32_CentOSでiSCSI環境構築
7 Hits, Last modified: 5 years ago
===== == iSCSIサーバ(iscsi-target)側 == IP: 192.168.10.200 == iSCSIクライアント(iscsi-initiator)側 == IP: 192.168.10.101 ===== ①iSCSIサーバ(iscsi-target)側 ===== ==== 1.iscsiイニシエータの用意 ==== === インストール === <code console>... --mode target --tid 0 --initiator-address 192.168.10.101 # tgtadm --lld iscsi --op bind --mode target
52 Heartbeat + Pacemaker + DRBD
6 Hits, Last modified: 10 years ago
cemaker + DRBD ====== ^ host ^ IP ^ |nfs-1|10.0.0.31| |nfs-2|10.0.0.32| <code> | | vip: 10.0.0.30 +--------+--------+ | | | eth0:10.0.0.31 | eth0:10.0.0.32 +-----+-----+ +-----
75 Proftpd
6 Hits, Last modified: 9 months ago
ile=/etc/proftpd.passwd \ --name ftp_user \ --uid=1000 --gid=1000 \ --home=/var/www/vhost/hogehoge \ --shell=/sbin/nologin </code> === ユーザ削除 === AuthUse... r ftp_user2 ftp 0 * c Wed Nov 27 06:46:17 2024 2 10.10.10.249 45185224 /home/rocky/Firefox_Setup_51.0.1.exe b _ i r ftp_user2 ftp 0 * c Wed Nov 27 15:55:
01 tcpdump
5 Hits, Last modified: 5 years ago
<code> # tcpdump -nne -i eth0 tcp dst portrange 10000-10010 </code> ===== 特定ホストだけ ===== <code console> # tcpdump -nne -i bond1.302 not arp and icmp and host... <code console> # tcpdump -nne -i eth0 net 192.168.10.0/24 </code> ===== Macアドレス ===== <code> # tcpdu
29 TGT で thin provision
5 Hits, Last modified: 6 years ago
https://blog.csdn.net/bobpen/article/details/79445104|参考URL]] ===== 1. Sparseファイル作成 ===== これで500G のSp... Type: disk SCSI ID: IET 00010001 SCSI SN: beaf11 Size: ... rwxrwxrwx. 1 root root 9 Mar 24 00:40 ip-192.168.10.16:3260-iscsi-iqn.2014-03.storage-server:disk1-lu... with unmap bit supported (LBWS): 1 Write same (10) with unmap bit supported (LBWS10): 1 Logical b
44 CentOS7 chronyd NTP
5 Hits, Last modified: 11 months ago
hronyd ===== 確認 ===== <code> # chronyc sources 210 Number of sources = 4 MS Name/IP address ... ============= ^- ntp03.lagoon.nc 3 10 377 434 +27ms[ +27ms] +/- 140ms ^- y.ns.gin.ntt.net 2 10 377 870 -2303us[-2303us] +/- 106ms ^- time.cloudflare.com 3 10 377 199 -286us[
60 CentOS OpenVPN
5 Hits, Last modified: 12 years ago
s ← VPN接続状況確認 OpenVPN CLIENT LIST Updated,Mon Mar 10 16:16:53 2014 Common Name,Real Address,Bytes Received,Bytes Sent,Connected Since client1,210.172.143.2:62974,888323,892928,Sun Mar 9 04:03:54... Virtual Address,Common Name,Real Address,Last Ref 10.8.0.6,client1,210.172.143.2:62974,Mon Mar 10 15:53:00 2014 GLOBAL STATS Max bcast/mcast queue length,
61 CentOS OpenVPNトンネル接続
5 Hits, Last modified: 12 years ago
ip_contrack
4 Hits, Last modified: 4 years ago
18 SSH 高速化(arcfour256) rsync
3 Hits, Last modified: 19 months ago
NICのスピード変更(ethtool)
3 Hits, Last modified: 13 years ago
VPNサーバ(PacketiX)
3 Hits, Last modified: 7 years ago
VPNサーバ(PacketiX VPN -> SoftEther VPN)移行方法
3 Hits, Last modified: 7 years ago
06 sshでパスワードなしにログインするには
2 Hits, Last modified: 10 years ago
24 静的ルーティング
2 Hits, Last modified: 7 years ago
27 resolv.confを変更させない
2 Hits, Last modified: 4 years ago
31_1 iSCSIタイムアウト
2 Hits, Last modified: 4 years ago
38 multipath logout
2 Hits, Last modified: 10 years ago
42 CentOS7 シリアルコンソール
2 Hits, Last modified: 5 years ago
71 vsftpd
2 Hits, Last modified: 15 months ago
91 ネットワークのIP確認
2 Hits, Last modified: 10 years ago
tcで帯域制限(htb)
2 Hits, Last modified: 6 years ago
02 ジャンボフレーム(Jumbo Frame)
1 Hits, Last modified: 12 years ago
04 SSHトンネルでMySQL
1 Hits, Last modified: 13 years ago
10 CentOS PPTP VPN
1 Hits, Last modified: 12 years ago
14 rsync
1 Hits, Last modified: 9 years ago
16 unboundでキャッシュサーバ
1 Hits, Last modified: 4 years ago
30 NFSサーバ
1 Hits, Last modified: 16 months ago
43 reposync リポジトリコピー
1 Hits, Last modified: 5 years ago
53 Pacemaker crm コマンド
1 Hits, Last modified: 6 years ago
63 CentOS6 yum Error
1 Hits, Last modified: 4 years ago
IPMIコマンド
1 Hits, Last modified: 6 years ago
ipsecのタイムアウト
1 Hits, Last modified: 12 years ago
yum
1 Hits, Last modified: 13 years ago
マルチホーム(マルチホ-ミング)
1 Hits, Last modified: 7 years ago

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