表題通り、AWS EC2のインスタンス(Amazon Linux 2)のステータスチェックが「1/2のチェックに合格しました」と表示されてしまう問題が発生しております。
そのせいで、以下の操作ができない状態です。
- SSH接続ができない(Operation timed outと表示されます)
- 設置しているWordpressのサイトにアクセスできない。(URL: http://www.kmd-htsh.com/)
対策として、以下を試しましたが、効果はありませんでした。
0. インスタンスの再起動(停止→時間を置いて起動)
→再起動直後はSSH接続もサイトアクセスもできるようになるのですが、すぐにアクセスできなくなってしまいます。
また、Wordpressの更新時、「FTP情報が必要」WordPressのプラグイン・本体の更新ができない現象が発生し、それが一つ気がかりになっております。
- パッケージやWordpressの更新、メモリの解放
→パッケージの更新は「sudo yum update」を使用しております。
また、メモリが圧迫されている原因もあるかと思い、プロセスのメモリ使用量が少ないのにメモリ使用量が増加していた時に調査、対応したことを参考にメモリの解放も実施しました。
一つ原因かと思っているのは、以前にLetsencryptを使い、サイトをHTTPS化しようとしたとき、HTTPSにリダイレクトさせようと試行錯誤したのが原因かなと考えております。
(サーバーのHTTPトラフィックをロードバランサのHTTPSにリダイレクトするにはどうすればよいですか?を参考に設定を変更するなどしていました。)
念のため、以下にシステムログ(一部抜粋)と、インスタンスのスクリーンショットを添付いたします。
当方AWS初心者のため、不足情報等ありましたらご指摘いただけますと幸いです。
以上、よろしくお願いいたします。
○システムログ
[[32m OK [0m] Started Apply Kernel Variables.
[ 4.836272] systemd-journald[1911]: Received request to flush runtime journal from PID 1
[ 4.844569] RPC: Registered named UNIX socket transport module.
[ 4.848664] RPC: Registered udp transport module.
[ 4.852076] RPC: Registered tcp transport module.
[ 4.855487] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 4.944698] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[ 4.998102] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input3
[ 5.000295] ACPI: Power Button [PWRF]
[ 5.000339] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input4
[ 5.000344] ACPI: Sleep Button [SLPF]
[ 5.080545] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input5
[ 5.105749] mousedev: PS/2 mouse device common for all mice
[ 5.132476] EDAC sbridge: Ver: 1.1.2
[[32m OK [0m] Started Configure read-only root support.[[32m OK [0m] Started Create Static Device Nodes in /dev.
Starting udev Kernel Device Manager...
[[32m OK [0m] Started Flush Journal to Persistent Storage.
[[32m OK [0m] Started udev Coldplug all Devices.
Starting udev Wait for Complete Device Initialization...
[[32m OK [0m] Mounted NFSD configuration filesystem.
[[32m OK [0m] Started udev Kernel Device Manager.
[[32m OK [0m] Found device /dev/ttyS0.
%G[[32m OK [0m] Created slice system-ec2net\x2difup.slice.
[[32m OK [0m] Started Monitoring of LVM2 mirrors,...ng dmeventd or progress polling.
[[32m OK [0m] Reached target Local File Systems (Pre).
[[32m OK [0m] Started udev Wait for Complete Device Initialization.
Starting Activation of DM RAID sets...
[[32m OK [0m] Started Activation of DM RAID sets.
[[32m OK [0m] Reached target Local File Systems.
Starting Create Volatile Files and Directories... Starting Tell Plymouth To Write Out Runtime Data... Starting Preprocess NFS configuration...
[[32m OK [0m] Reached target Local Encrypted Volumes.
[[32m OK [0m] Started Preprocess NFS configuration.
[[32m OK [0m] Started Create Volatile Files and Directories.
Starting Security Auditing Service... Mounting RPC Pipe File System...
[[32m OK [0m] Mounted RPC Pipe File System.
[[32m OK [0m] Started Tell Plymouth To Write Out Runtime Data.
[[32m OK [0m] Started Security Auditing Service.
Starting Update UTMP about System Boot/Shutdown...
[[32m OK [0m] Started Update UTMP about System Boot/Shutdown.
[ 6.003886] cloud-init[1942]: Cloud-init v. 0.7.9 running 'init-local' at Tue, 19 Jun 2018 10:58:30 +0000. Up 5.96 seconds.
[[32m OK [0m] Started Initial cloud-init job (pre-networking).
[[32m OK [0m] Reached target System Initialization.
[[32m OK [0m] Reached target Paths.
[[32m OK [0m] Listening on RPCbind Server Activation Socket.
[[32m OK [0m] Listening on D-Bus System Message Bus Socket.
[[32m OK [0m] Reached target Sockets.
[[32m OK [0m] Reached target Basic System.
Starting Dump dmesg to /var/log/dmesg...
[[32m OK [0m] Started libstoragemgmt plug-in server daemon.
Starting libstoragemgmt plug-in server daemon...
[[32m OK [0m] Started Hardware RNG Entropy Gatherer Daemon.
Starting Hardware RNG Entropy Gatherer Daemon...
[ 6.178081] random: crng init done
[ 6.182277] random: 7 urandom warning(s) missed due to ratelimiting
Starting NTP client/server...Starting System Logging Service... Starting Resets System Activity Logs...
[[32m OK [0m] Started irqbalance daemon.
Starting irqbalance daemon... Starting GSSAPI Proxy Daemon...
[[32m OK [0m] Started D-Bus System Message Bus.
Starting D-Bus System Message Bus... Starting Login Service...
[[32m OK [0m] Reached target Timers.
[[32m OK [0m] Reached target Network (Pre).
Starting LSB: Bring up/down networking...
[[32m OK [0m] Started System Logging Service.
[[32m OK [0m] Started Dump dmesg to /var/log/dmesg.
[[32m OK [0m] Started Resets System Activity Logs.
[[32m OK [0m] Started Login Service.
[[32m OK [0m] Started GSSAPI Proxy Daemon.
[[32m OK [0m] Reached target NFS client services.
[[32m OK [0m] Reached target Remote File Systems (Pre).
[[32m OK [0m] Reached target Remote File Systems.
[[32m OK [0m] Started NTP client/server.
[[32m OK [0m] Started LSB: Bring up/down networking.
[[32m OK [0m] Reached target Network.
Starting Postfix Mail Transport Agent... Starting The PHP FastCGI Process Manager... Starting MariaDB 10.2 database server... Starting The Apache HTTP Server... Starting Initial cloud-init job (metadata service crawler)...
[[32m OK [0m] Started The PHP FastCGI Process Manager.
[[32m OK [0m] Started The Apache HTTP Server.
[ 8.607981] cloud-init[3025]: Cloud-init v. 0.7.9 running 'init' at Tue, 19 Jun 2018 10:58:33 +0000. Up 8.56 seconds.
[ 8.639989] cloud-init[3025]: ci-info: +++++++++++++++++++++++++++Net device info++++++++++++++++++++++++++++
[ 8.640218] cloud-init[3025]: ci-info: Device Up Address Mask Scope Hw-Address
[ 8.640326] cloud-init[3025]: ci-info: lo: True 127.0.0.1 255.0.0.0 . .
[ 8.640437] cloud-init[3025]: ci-info: lo: True . . d .
[ 8.640535] cloud-init[3025]: ci-info: eth0: True 172.31.44.201 255.255.240.0 . 06:dd:67:49:e1:f6
[ 8.640632] cloud-init[3025]: ci-info: eth0: True . . d 06:dd:67:49:e1:f6
[ 8.640726] cloud-init[3025]: ci-info: ++++++++++++++++++++++++++++Route IPv4 info+++++++++++++++++++++++++++++
[ 8.640822] cloud-init[3025]: ci-info: Route Destination Gateway Genmask Interface Flags
[ 8.640923] cloud-init[3025]: ci-info: 0 0.0.0.0 172.31.32.1 0.0.0.0 eth0 UG
[ 8.641020] cloud-init[3025]: ci-info: 1 169.254.169.254 0.0.0.0 255.255.255.255 eth0 UH
[ 8.641116] cloud-init[3025]: ci-info: 2 172.31.32.0 0.0.0.0 255.255.240.0 eth0 U
[[32m OK [0m] Started Postfix Mail Transport Agent.
[[32m OK [0m] Started MariaDB 10.2 database server.
[[32m OK [0m] Started Initial cloud-init job (metadata service crawler).
[[32m OK [0m] Reached target Cloud-config availability.
Starting Permit User Sessions... Starting OpenSSH server daemon...
[[32m OK [0m] Reached target Network is Online.
Starting Notify NFS peers of a restart... Starting Apply the settings specified in cloud-config... Starting Dynamically Generate Message Of The Day...
[[32m OK [0m] Started Permit User Sessions.
Starting Wait for Plymouth Boot Screen to Quit...
[[32m OK [0m] Started Command Scheduler.
Starting Command Scheduler... Starting Terminate Plymouth Boot Screen...
[[32m OK [0m] Started Job spooling tools.
Starting Job spooling tools...
[[32m OK [0m] Started Notify NFS peers of a restart.
[[32m OK [0m] Started OpenSSH server daemon.
[ 9.856968] cloud-init[3545]: Cloud-init v. 0.7.9 running 'modules:config' at Tue, 19 Jun 2018 10:58:34 +0000. Up 9.78 seconds.
[ 10.252044] cloud-init[3576]: Cloud-init v. 0.7.9 running 'modules:final' at Tue, 19 Jun 2018 10:58:34 +0000. Up 10.18 seconds.
[ 10.288031] cloud-init[3576]: Cloud-init v. 0.7.9 finished at Tue, 19 Jun 2018 10:58:34 +0000. Datasource DataSourceEc2. Up 10.28 secondsAmazon Linux 2 (2017.12) LTS Release Candidate
Kernel 4.14.47-63.37.amzn2.x86_64 on an x86_64ip-172-31-44-201 login: 2018/06/19 10:58:50Z: Amazon SSM Agent v2.2.103.0 is running
2018/06/19 10:58:50Z: OsProductName: Amazon Linux
2018/06/19 10:58:50Z: OsVersion: 2
○インスタンスのスクリーンショット