i2tsuki · March 23, 2022 03:54 · Mar 23, 2022 · Jan 6, 2021 · Oct 20, 2020 · Oct 20, 2020
diff --git a/Operation memo b/Operation memo
@@ -8,7 +8,7 @@
 ps -ALo user,tid,pid,ppid,euid,pgid,%cpu,%mem,vsz,rss,lstart,time,args,psr,wchan
 ps -ALo user,pid,ppid,euid,pgid,%cpu,%mem,vsz,rss,lstart,time,args
 # ip address
-ip -f inet -o addr show eth0|cut -d\ -f 7
+ip -f inet -o addr show eth0 | cut -d ' ' -f 7
 # tc command
 # 1 Mbps に制限
 sudo tc qdisc add dev eth0 root tbf limit 1Mb buffer 200Kb rate 1Mbps

diff --git a/Operation memo b/Operation memo
@@ -50,3 +50,10 @@ kubectl config set-context cluster.local --cluster cluster.local --user=jenkins
 ```bash
 xlock -echokeys -enablesaver -geometry 240x240 -use3d -message 'type your password' -dpmsstandby 900 -dpmsoff 1500 -mode pacman
 ```
+
+### Update init ram image by using dracut
+```bash
+make -j8 && make modules_install && make install
+dracut --force -a crypt -i /bin/busybox /bin/busybox -i /rootfs.key /rootfs.key --kver 5.4.17-gentoo
+grub-mkconfig -o /boot/grub/grub.cfg
+```
diff --git a/Operation memo b/Operation memo
@@ -15,9 +15,9 @@ sudo tc qdisc add dev eth0 root tbf limit 1Mb buffer 200Kb rate 1Mbps
 # screen command(serial)
 screen /dev/ttyUSB0 9600
 # Bluetooth dbus
-dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_38_18_4C_55_BE_85 org.bluez.MediaControl1.VolumeUp
-dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_38_18_4C_55_BE_85 org.freedesktop.DBus.Introspectable.Introspect
-dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_38_18_4C_55_BE_85/sep1 org.freedesktop.DBus.Introspectable.Introspect
+dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_xx_xx_xx_xx_xx_xx org.bluez.MediaControl1.VolumeUp
+dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_xx_xx_xx_xx_xx_xx org.freedesktop.DBus.Introspectable.Introspect
+dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_xx_xx_xx_xx_xx_xx/sep1 org.freedesktop.DBus.Introspectable.Introspect
 ```
 
 ### TCPdump

diff --git a/Operation memo b/Operation memo
@@ -43,3 +43,10 @@ openssl x509 -req -in ./${NAME}.csr -CA /etc/kubernetes/ssl/ca.pem -CAkey /etc/k
 kubectl config set-cluster cluster.local --certificate-authority=/etc/kubernetes/ssl/ca.pem  --server=https://xxx.ap-northeast-1.elb.amazonaws.com:443 --embed-certs=true
 kubectl config set-context cluster.local --cluster cluster.local --user=jenkins
 ```
+
+## Linux Desktop Operation
+
+### xlockmore
+```bash
+xlock -echokeys -enablesaver -geometry 240x240 -use3d -message 'type your password' -dpmsstandby 900 -dpmsoff 1500 -mode pacman
+```
diff --git a/Operation memo b/Operation memo
@@ -1,4 +1,5 @@
 # Operation memo
+
 ## Server Operation
 
 ### General

diff --git a/Operation memo b/Operation memo
@@ -1,5 +1,24 @@
 # Operation memo
 ## Server Operation
+
+### General
+```bash
+# ps command
+ps -ALo user,tid,pid,ppid,euid,pgid,%cpu,%mem,vsz,rss,lstart,time,args,psr,wchan
+ps -ALo user,pid,ppid,euid,pgid,%cpu,%mem,vsz,rss,lstart,time,args
+# ip address
+ip -f inet -o addr show eth0|cut -d\ -f 7
+# tc command
+# 1 Mbps に制限
+sudo tc qdisc add dev eth0 root tbf limit 1Mb buffer 200Kb rate 1Mbps
+# screen command(serial)
+screen /dev/ttyUSB0 9600
+# Bluetooth dbus
+dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_38_18_4C_55_BE_85 org.bluez.MediaControl1.VolumeUp
+dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_38_18_4C_55_BE_85 org.freedesktop.DBus.Introspectable.Introspect
+dbus-send --print-reply --system --dest=org.bluez /org/bluez/hci0/dev_38_18_4C_55_BE_85/sep1 org.freedesktop.DBus.Introspectable.Introspect
+```
+
 ### TCPdump
 ```bash
 # 128 MB で分割

diff --git a/Operation memo b/Operation memo
@@ -11,3 +11,15 @@ tcpdump port 8080 -t -n -w ./%Y-%m-%dT%H%M.pcap -G 3600 -W 10
 # pcap ファイル 読み込み
 tcpdump -t -r ./2020-06-02T1100.pcap | grep 'Flags \[S\]' | cut -d' ' -f 2 | sed -e 's/\.[0-9][0-9]*//g' | sort | uniq -c
 ```
+
+## Kubernetes create user account
+```sh
+NAME="jenkins"
+SUBJECT='/CN=jenkins'
+openssl genrsa -rand /var/log/messages -out ./${NAME}-key.pem 2048 
+openssl req -new -nodes -key ./${NAME}-key.pem -sha256 -out ./${NAME}.csr -subj "${SUBJECT}" -config /etc/kubernetes/openssl.conf
+openssl x509 -req -in ./${NAME}.csr -CA /etc/kubernetes/ssl/ca.pem -CAkey /etc/kubernetes/ssl/ca-key.pem -CAcreateserial -out ${NAME}.pem -days 36500 -extensions v3_req -extfile /etc/kubernetes/openssl.conf
+
+kubectl config set-cluster cluster.local --certificate-authority=/etc/kubernetes/ssl/ca.pem  --server=https://xxx.ap-northeast-1.elb.amazonaws.com:443 --embed-certs=true
+kubectl config set-context cluster.local --cluster cluster.local --user=jenkins
+```
diff --git a/Operation memo b/Operation memo
@@ -0,0 +1,13 @@
+# Operation memo
+## Server Operation
+### TCPdump
+```bash
+# 128 MB で分割
+tcpdump port 22 -t -n -w ./2020-06-02T1100.pcap -C 128 -W 10
+# 1 分ごとに rotate
+tcpdump -A dst host 10.0.0.1 or dst host 10.0.0.2 -t -n -w ./2020-10-10T11%M%S.pcap -G 60
+# 1 時間ごとに rotate
+tcpdump port 8080 -t -n -w ./%Y-%m-%dT%H%M.pcap -G 3600 -W 10
+# pcap ファイル 読み込み
+tcpdump -t -r ./2020-06-02T1100.pcap | grep 'Flags \[S\]' | cut -d' ' -f 2 | sed -e 's/\.[0-9][0-9]*//g' | sort | uniq -c
+```
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