Test iSCSI
The LUN is created on ReadyNAS (192.168.1.28) in group CentOS-PXE, target iqn.1994-11.com.netgear:nas:08303042:centos-pxe.
All commands are run from my laptop (T530), but it can be any Linux:
[root@T530 ~]# iscsiadm -m discovery -t sendtargets -p 192.168.1.28 192.168.1.28:3260,1 iqn.1994-11.com.netgear:nas:051ada19:group1 192.168.1.28:3260,1 iqn.1994-11.com.netgear:nas:08303042:centos-pxe
We are interested in the second one:
[root@T530 ~]# iscsiadm -m node -T 'iqn.1994-11.com.netgear:nas:08303042:centos-pxe' -p 192.168.1.28 -l Logging in to [iface: default, target: iqn.1994-11.com.netgear:nas:08303042:centos-pxe, portal: 192.168.1.28,3260] (multiple) Login to [iface: default, target: iqn.1994-11.com.netgear:nas:08303042:centos-pxe, portal: 192.168.1.28,3260] successful.
Now we can list disks:
[root@T530 ~]# ls -l /dev/disk/by-path razem 0 lrwxrwxrwx. 1 root root 9 10-22 17:25 fc---lun-0 -> ../../sdd iqn.1994-11.com.netgear:nas:08303042:centos-pxe-lun-0 -> ../../sdd lrwxrwxrwx. 1 root root 9 10-22 16:29 pci-0000:00:0d.0-ata-1.0 -> ../../sda lrwxrwxrwx. 1 root root 10 10-22 16:29 pci-0000:00:0d.0-ata-1.0-part1 -> ../../sda1 lrwxrwxrwx. 1 root root 10 10-22 16:29 pci-0000:00:0d.0-ata-1.0-part2 -> ../../sda2 lrwxrwxrwx. 1 root root 9 10-22 16:29 pci-0000:00:0d.0-ata-2.0 -> ../../sr0
as you can see, the new volume is linked as /dev/sdd usualy it will be sda or sdb.
Now we can "unmount" as it won't be needed.
iscsiadm -m node -T 'iqn.1994-11.com.netgear:nas:08303042:centos-pxe' -p 192.168.1.28 -u
Configure network install
You will need: tftp, dhcp and ftp server and CentOS installation ISO file. Unpack ISO content to ftp server to some (CentOS7-1908-minimal in my case) directory.
Add entry in /data/tftpboot/pxelinux.cfg/default file:
LABEL InstallCentOS7 MENU LABEL Install CentOS 7 1908 KERNEL /networkboot/CentOS7-1908/vmlinuz APPEND initrd=/networkboot/CentOS7-1908/initrd.img inst.repo=ftp://192.168.1.28/CentOS7-1908-minimal
You have to create networkboot/CentOS7-1908 directory in your tftp root directory. In my (ReadtNAS) case /data/tftpboot/, so full path is /data/tftpboot/networkboot/CentOS7-1908.
Files vmlinux and initrd.img are from ISO from isolinux directory. Because my ftp root is /data/pub/ I typed:
cp /data/pub/CentOS-7-x86_64-Minimal-1908/isolinux/{vmlinuz,initrd.img} /data/tftpboot/networkboot/CentOS7-1908
Now you should be able to run CentOS installation from network.
Installation
Boot computer from network (PXE BOOT) choose Install CentOS 7 1908 from pxe menu.
Run standard installator. As Installation destination add disk in Specialized & Network Disks. In Add iSCSI Target... enter 192.168.1.28 as Target IP Address and click Start discovery. Choose desired node (if you have more than one you should know what do do) and click Log in and (after a while) OK.
Now you should have some drive (sda, sdb or similar) - select it and click Done. Probably there will be Error checking storage configuration message - click Full disk summary and boot loader ... and unselect your disk as a boot device by clicking Do not install boot loader. Click Done.
Now be sure the name of your network card. In my case it is enp0s3.
You can add more installation repositories, but it is not necessary now.
Click Begin installation. It will take a while - in the meantime you can set root password.
When installation is complete switch to console (Ctrl-Alt-F2) and copy vmlinuz and initramfs files to your tftp server:
scp /mnt/sysimage/boot/vmlinuz-3.10.0-1062.el7.x86_64 /mnt/sysimage/boot/initramfs-3.10.0-1062.el7.x86_64.img user@192.168.1.28:
and place this two files in tftp directory:
mv /home/user/vmlinuz-3.10.0-1062.el7.x86_64 /home/user/initramfs-3.10.0-1062.el7.x86_64.img /data/tftpboot/networkboot/CentOS7-1908
as you can see I use the same directory as in network install, but it is no necessary.
Now it is time to final PXE configuration on tftp server prepare entry similar to:
LABEL Centos7 MENU DEFAULT MENU LABEL Cent OS 7 kernel /networkboot/CentOS7-1908/vmlinuz-3.10.0-1062.el7.x86_64 root=/dev/mapper/centos-root ro netroot=iscsi:@192.168.1.28::::iqn.1994-11.com.netgear:nas:08303042:centos-pxe rd.iscsi.initiator=iqn.1994-05.com.redhat:2f3474eec735 vconsole.keymap=pl LANG=en_GB.UTF-8 console=tty0 ip=enp3s0:dhcp rhgb quiet append initrd=/networkboot/CentOS7-1908/initramfs-3.10.0-1062.el7.x86_64.img
You can check "magic numbers" on freshly installed system by:
[anaconda root@localhost /]# cat /etc/iscsi/initiatorname.iscsi InitiatorName=iqn.1994-05.com.redhat:2f3474eec735 [anaconda root@localhost /]# iscsiadm -m session tcp: [1] 192.168.1.28:3260,1 iqn.1994-11.com.netgear:nas:08303042:centos-pxe [anaconda root@localhost /]# grep root /mnt/sysimage/etc/fstab /dev/mapper/centos-root / xfs defaults,_netdev,_netdev 0 0
Now you can click Reboot.
After some time you have network booted system.
Configure iPXE
Instead of PXE I should be possible to use iPXE. For now I can only boot iPXE - then I return to PXE because it works.
Download binary (on ReadyNAS - TFTP server) and move to tftp directory:
cd /tmp/ wget http://boot.ipxe.org/undionly.kpxe mv /tmp/undionly.kpxe /data/tftpboot/
Not to have to flash network card ROM I use PXE chainloading. Change (on Gargoyle - DHCP server):
dhcp-match=set:ipxe,175 dhcp-boot=tag:!ipxe,undionly.kpxe,,192.168.1.28 dhcp-boot=menu.ipxe,,192.168.1.28
It should be more convenient way to upgrade kernel in future.
For now, in menu.ipxe I've entry:
:pxelinux set 210:string tftp://192.168.1.28/ chain ${210:string}pxelinux.0 || goto failed goto start
Sources:
Diskless iSCSI boot with PXE HOWTO
How to chainload ipxe using dnsmasq?
Centos 7 Diskless Environment – PXE booting OpenStack compute nodes from iSCSI SAN
Last time I've prepared Gargoyle as dhcp and tftp server.
Prepare tftp on ReadyNAS
To enable tftp on ReadyNAS I've installed Tftp Server for Readynas. All files have to be in tftpboot share, so I've created it.
I have to copy all syslinux files (can be copied from gargoyle) to this share, so it contains (full path):
/data/tftpboot/pxelinux.cfg /data/tftpboot/pxelinux.cfg/default /data/tftpboot/ldlinux.c32 /data/tftpboot/libutil.c32 /data/tftpboot/menu.c32 /data/tftpboot/pxelinux.0
Reconfigure DHCP
Now I have to change dhcp server configuration. On gargoyle, in file /etc/dnsmasq.conf:
dhcp-boot=pxelinux.0,,192.168.1.28
as you can see, now it has address of my ReadyNAS (192.168.1.28).
You can comment out lines
enable-tftp tftp-root=/var/lib/misc/tftpboot
tftp on gargoyle is not need any more.
Now you should be able to boot any PC using PXE from ReadyNAS.
Boot to CentOS 7 (or any Linux) Installer
Now you can try to run Cent OS installer from network. You have to prepare FTP share and copy there files from installation image (CD/DVD). I've copied it to ReadyNAS to pub/CentOS7-1708 share .
If you use proftpd you have to create /etc/frontview/proftpd/proftpd.conf.overrides file to allow anonymous access:
UserAlias anonymous guest <Anonymous /var/ftp/pub> User guest Group guest <Directory *> <Limit WRITE> DenyAll </Limit> </Directory> <Directory incoming> <Limit READ > DenyAll </Limit> <Limit STOR> AllowAll </Limit> </Directory> </Anonymous>
Create /data/tftpboot/networkboot/CentOS7-1708 directory and copy there files:
/data/tftpboot/networkboot/CentOS7-1708/initrd.img /data/tftpboot/networkboot/CentOS7-1708/vmlinuz
In /data/tftpboot/pxelinux.cfg/default file add lines:
LABEL InstallCentOS7 MENU DEFAULT MENU LABEL Install CentOS 7 KERNEL /networkboot/CentOS7-1708/vmlinuz APPEND initrd=/networkboot/CentOS7-1708/initrd.img inst.repo=ftp://192.168.1.28/CentOS7-1708-minimal
notice that ftp path is relative to pub share.
Now you should be able to boot to Cent OS installer.
Prepare NFS share
I've done it on ReadtNAS. You have to set in Settings - Network Access - NFS - Advanced settings: No Root Squash.
Be careful because you have to provide full path when mount share. My share is pub/root, so I have to mount as /data/pub/root:
mount -vt nfs 192.168.1.18:/data/pub/root /mnt/nfsroot/
As you can see, I've mounted this share in /mnt/nfsroot directory.
Install Cent OS
yum install --releasever=7 --installroot=/mnt/nfsroot \@base \@core
when You want to install another packages you can see error:
Wczytane wtyczki: fastestmirror, langpacks Loading mirror speeds from cached hostfile There are no enabled repos. Run "yum repolist all" to see the repos you have. To enable Red Hat Subscription Management repositories: subscription-manager repos --enable <repo> To enable custom repositories: yum-config-manager --enable <repo>
you will have to
cp /etc/yum.repos.d/CentOS-Base.repo /mnt/nfsroot/etc/yum.repos.d/
Now you can add some GUI packages:
yum install --releasever=7 --installroot=/mnt/nfsroot \@fonts \@gnome-desktop \@x11
Based on: CentOS 7: Install PXE Boot server for thin client with NFS.
The solution is similar as in Windows 7. To add a drive you have to type command (single line):
"C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" internalcommands createrawvmdk -filename "C:\Users\jaqb\SP900.vmdk" -rawdisk "\\.\PhysicalDrive1"
The VirutalBox also have to be run as privileged user (administrator).
On CentOS 7 you can log all commands to syslog an then to local file or even to remote server.
Send all commands to syslog
Create file /etc/sysconfig/bash-prompt-xterm:
RETRN_VAL=$?;logger -p local6.debug "$(whoami) [$$]: $(history 1 | sed "s/^[ ]*[0-9]\+[ ]*//" ) [$RETRN_VAL]"
and change, to be executable:
chmod a+x /etc/sysconfig/bash-prompt-xterm
Configure syslog to send messages from local6 facility to separate file
Create file /etc/rsyslog.d/bash.conf:
local6.* /var/log/commands.log
finally:
service restart rsyslog
Now you can monitor commands:
tail -f /var/log/commands.log
Log command using audit
Alternatively you can use audit - create /etc/audit/rules.d/bash_history.rules:
-a exit,always -F arch=b64 -S execve -a exit,always -F arch=b32 -S execve
but logs are not very human friendly:
grep EXECVE /var/log/audit/audit.log
and you may also want to log execvp, execl, execveat etc.
Sources:
https://askubuntu.com/questions/93566/how-to-log-all-bash-commands-by-all-users-on-a-server
https://unix.stackexchange.com/questions/86000/how-can-you-log-every-command-typed
http://whmcr.com/2011/10/14/auditd-logging-all-commands/
Setting up PXE booting server.
Set up DHCP server:
On Gargoyle (my dhcp server) router I've add to /etc/dnsmasq.conf:
dhcp-boot=pxelinux.0 enable-tftp tftp-root=/var/lib/misc/tftpboot
of course you can try to use uci instead, if you know how - I couldn't.
Set up files
Download newest syslinux from Linux kernel site (in my case: syslinux 6.03).
Copy
- bios/com32/libutil/libutil.c32
- bios/com32/elflink/ldlinux/ldlinux.c32
- bios/com32/menu/menu.c32
- bios/core/pxelinux.0
to /var/lib/misc/tftpboot directory.
Create pxelinux.cfg directory and default file inside:
mkdir /var/lib/misc/tftpboot/pxelinux.cfg/ vi /var/lib/misc/tftpboot/pxelinux.cfg/default
The default file should have content like this:
DEFAULT menu.c32 TIMEOUT 300 ALLOWOPTIONS 0 PROMPT 0 MENU TITLE My new PXE Boot Menu LABEL BootLocal MENU LABEL ^Boot Local (HDD) LOCALBOOT 0
now you should be able to test booting from any computer in local network.
Of course this is dummy example as it can only boot from local disk.
As you can see in logs (using logread command on Gargoule router):
Fri Sep 27 19:25:47 2019 daemon.info dnsmasq-tftp[20876]: sent /var/lib/misc/tftpboot/pxelinux.0 to 192.168.1.163 Fri Sep 27 19:25:47 2019 daemon.info dnsmasq-tftp[20876]: sent /var/lib/misc/tftpboot/ldlinux.c32 to 192.168.1.163 Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/44454c4c-3400-1037-8034-b1c04f30354a not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/01-84-2b-2b-bd-47-59 not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C0A801A3 not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C0A801A not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C0A801 not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C0A80 not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C0A8 not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C0A not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C0 not found Fri Sep 27 19:25:47 2019 daemon.err dnsmasq-tftp[20876]: file /var/lib/misc/tftpboot/pxelinux.cfg/C not found Fri Sep 27 19:25:47 2019 daemon.info dnsmasq-tftp[20876]: sent /var/lib/misc/tftpboot/pxelinux.cfg/default to 192.168.1.163
My computer tried to find following configs files:
- his UUID (44454c4c-3400-1037-8034-b1c04f30354a)
- his MAC address (01-84-2b-2b-bd-47-59) with 01 prefix
- full IP address (C0A801A3) - C0.A8.01.A3 is equal to 192.168.1.163.
- 7 larger subnets (by 4 bits) - C0A801A to C.
- finally default file
You can use it later to per host configurations.
First of all you should prepare image with LDAP support as described in Docker image of Wordpress with LDAP support or why do not use ldap plugin before you created container...
But if you already have a container there is also possibility to enable LDAP support:
Run bash inside container:
docker exec -it wordpress_wordpress_1 /bin/bash
then exec:
apt-get update apt-get install -y libldap2-dev docker-php-ext-configure ldap --with-libdir=lib/x86_64-linux-gnu/ docker-php-ext-install ldap rm -rf /var/lib/apt/lists/* apt-get purge -y --auto-remove libldap2-dev /etc/init.d/apache2 restart
the last line will terminate container. If you have set power policy to restart always there is nothing you have to do. Alternatively you can run container again
docker start wordpress_wordpress_1
I am using F*EX (old sever), but it doesn't integrate with Thunderbird Filelink.
Today I found Download Ticket Service (sources) - which says that provides integration with Thunderbird.
Update: Simpler and newer version: LEGO Boost and Python - CentOS 7.
I've manage to control LEGO Boost using Python.
I've used CentOS 7, BLED112 dongle and pylgbst library.
There are a few command I have to run:
yum install rh-python36 /opt/rh/rh-python36/root/usr/bin/pip install pygatt /opt/rh/rh-python36/root/usr/bin/pip install https://github.com/undera/pylgbst/archive/0.9.tar.gz /opt/rh/rh-python36/root/usr/bin/pip install pexpect
now I can run first program (boost1.py):
from pylgbst.movehub import MoveHub hub = MoveHub() for device in hub.devices: print(device)
using command:
/opt/rh/rh-python36/root/usr/bin/python boost1.py 1 2 55 56 57 50 58 59 60
as you can see, there are list of devices IDs (1, 2, 55, 56, 57, 50, 58, 59, 60).
Let's try to do something (boost2.py):
from pylgbst.movehub import MoveHub, COLOR_RED hub = MoveHub() hub.led.set_color(COLOR_RED)
Yes! The LED has been changed to red.
Install docker
curl -fsSL https://get.docker.com/ | sh
start, and enable to start after rebooting:
systemctl start docker systemctl enable docker
optionally you can add permissions you yourself:
usermod -aG docker jaqb
in my case my user is jaqb.
Install docker-compose
curl -L "https://github.com/docker/compose/releases/download/\ 1.23.1/docker-compose-$(uname -s)-$(uname -m)" \ -o /usr/local/bin/docker-compose chmod +x /usr/local/bin/docker-compose
you have to check if there is newer version than 1.23.1.
You can get System Workbench for STM32 from STM32 Community download area.
You can get STM32CubeMX form ST site.
STM32 CubeMX
I've tried to run SetupSTM32CubeMX-5.0.0.linux, but I got:
/lib/ld-linux.so.2: bad ELF interpreter: No such file or directory
so I need to install
yum install glibc.i686
because of missing /lib/ld-linux.so.2 file.
Now I've got:
[root@linux en.stm32cubemx5]# ./SetupSTM32CubeMX-5.0.0.linux chdir /tmp/en.stm32cubemx5/. current dir /tmp/en.stm32cubemx5 Nov 20, 2018 5:47:11 PM INFO: Logging initialized at level 'INFO' Nov 20, 2018 5:47:11 PM INFO: Commandline arguments: Nov 20, 2018 5:47:13 PM INFO: Detected platform: linux,version=3.10.0-693.21.1.e l7.x86_64,arch=x64,symbolicName=null,javaVersion=1.8.0_161 Nov 20, 2018 5:47:14 PM WARNING: No console implementation of panel: \ com.st.microxplorer.install.MXAnalyticsPanel Console installation is not supported by this installer [ Console installation FAILED! ]
If you have installed 4.x version you can get error when you try to run:
2018-11-20 15:22:45,811 [INFO] STM32CubeMX:30 - Starting STM32CubeMX Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException
I had to install:
yum groups install "GNOME" "X Window System" "Fonts" yum install xorg-x11-fonts-Type1 yum install java-1.8.0-openjdk
Java is important - java-1.8.0-openjdk-headless it's not enough.
Now I can install it without problems.
System Workbench for STM32
./install_sw4stm32_linux_64bits-v2.7.run -m -f
exit with error:
error: Failed dependencies: libusbx >= 1.0 is needed by st-stlink-server-1.1.0-2.amd64
so I've installed:
yum install libusbx
now it install without problems.
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