| Create Docker nginx but browser returns site not found error Posted: 20 Jun 2022 03:12 PM PDT Windows 11 Pro I'm following the Hashicorp Terraform Docker tutorial : $ docker run --name hashicorp-learn --detach --publish 8080:80 nginx:latest dc26543abdf895e638e4c5fcb968a9ce317c57e945060e97afe03b3991646682 $ docker ps --filter="name=hashicorp-learn" CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES dc26543abdf8 nginx:latest "/docker-entrypoint.…" 28 seconds ago Up 27 seconds 0.0.0.0:8080->80/tcp hashicorp-learn
Everything seems ok but when I open browser and go to http://0.0.0.0:8080
I get error This site can't be reached The webpage at http://0.0.0.0:8080/ might be temporarily down or it may have moved permanently to a new web address. ERR_ADDRESS_INVALID
I've tried this in Chrome, Firefox, Edge and receive similar errors. I've tried switching off internal/external Windows Defender Firewall but still receive error. |
| How to mark output packet to make ip-rule see it? Posted: 20 Jun 2022 03:12 PM PDT I have a routing configured: # ip rule 0: from all lookup local 32763: from all fwmark 0x3000 lookup main 32766: from all lookup another_one 32767: from all lookup default
I'm trying to mark output HTTP-requests (e.g. curl http://ifconfig.io/ip) with 0x3000 to make 32763 work: # iptables -A OUTPUT -t mangle -p tcp --dport 80 -j MARK --set-mark 0x3000
But it's not working. What am I missing? |
| Postfix + Dovecot + MySQL -- for both virtual and local (shell) accounts Posted: 20 Jun 2022 03:13 PM PDT Overview Caveat: I'm a repentant sendmail user from the 80s. The basic problem to solve is how to modify the dovecot (I assume dovecot) configuration to permit emails coming into the system that are addressed to non-virtual users (and have shell accounts on the system) that those emails are spooled up like typical unix users (as if there was no Dovecot involvement). I have configured it successfully to handle all incoming email as if every candidate incoming message is run through the Dovecot plumbing. The virtual domain/virtual user config operates perfectly. charlie@example.com arrives at the maildir specified and the SSL/cert (self-signed) is setup, and when dialoging with the user charlie@example.com, Dovecot+Postfix do the Right Thing. I was just following some of the documentation and guides and this behavior is obtained. This is OK. I want this. But.. about the local users. The users with shell accounts.. Now add the request -- for the shell users.. Users who are not virtual. They need to get email also. Question: I am not sure what I should be looking for in the Dovecot config to specify that a candidate message addressed to a shell user gets shunted off to Postfix without further disposition by Dovecot? EDIT: I realized after posting this question that the remarks may be that if the system has a FQDN itself, users like root@example.com make sense if example.com is the domain name. True. But do I really want to expose all of the shell users as virtual users in Dovecot? I don't think I do. Maybe I have to, but it seems heavy handed. eg: - Domain name of the system is coincidentally
example.com - Shell users on system:
alice and bob - Virtual account in the Dovecot plumbing:
charlie@example.com (assume plain old mail like the good old days) Desired use cases: alice@host:~$ mail -s "lunch?" bob
Result: mail from alice is spooled on /var/spool/mail/bob as traditionally (as if there was no Dovecot plumbing) because bob is a shell user on the system. alice@host:~$ mail -s "happy birthday" charlie@example.com
Result: mail to charlie@example.com is shoved through the Dovecot plumbing because 1) Charlie is not a shell user and 2) Charlie is in the virtual users databases used by Dovecot. System details $ lsb_release -a Distributor ID: Ubuntu Description: Ubuntu 18.04.6 LTS Release: 18.04 Codename: bionic $ cat packages-of-interest ii dovecot-core 1:2.2.33.2-1ubuntu4.7 ii dovecot-imapd 1:2.2.33.2-1ubuntu4.7 ii dovecot-lmtpd 1:2.2.33.2-1ubuntu4.7 ii dovecot-mysql 1:2.2.33.2-1ubuntu4.7 ii dovecot-pop3d 1:2.2.33.2-1ubuntu4.7 ii postfix 3.3.0-1ubuntu0.4 ii postfix-mysql 3.3.0-1ubuntu0.4
Thanks in advcance. I'll summarize if warranted and adjust question if asked. |
| Perforce client AND server no longer connecting, 127.0.0.1:1666 refusing all connections on server, even local connections Posted: 20 Jun 2022 02:38 PM PDT I have a server running Ubuntu server 18.04, and it's the catch-all local server - hosts a samba share, media server, and a Perforce server. I connect to that depot via a local network IP (ssl:192.x.x.x:1666). Everything was working great until... ...I also tried to add a wiki.js install to it. There was a lot of package and config thrashing. Apache got removed, wiki.js / mongodb / mariadb / postgresql all got thrown around and deleted more than once, and nginx got installed and torn out many times. Here's why - (context for what I was up to that probably caused this): I have DNS filtering for the whole network via PiHole and with that, I created local DNS names & CNAME entries for the various processes on that Ubuntu server. The idea was I could point a client machine elsewhere in the network to, say, "perforce.RackServer.net" instead of "192.168.0.x:1666" and get the same result with some reverse proxy'ing by nginx. We were trying to make addressing human-readable instead of everyone having to ask me for IPs and port numbers for everything. I did not have success setting up nginx. It's uninstalled now. That's fine - I'll come back to it later. Here's the problem. Somewhere in all that, something with the network configuration (the machine has eth0 and eth1) got whacked, and now when I try #sudo systemctl start helix-p4dctl.service I get Job for helix-p4dctl.service failed because the control process exited with error code.
See "systemctl status helix-p4dctl.service" and "journalctl -xe" for details.
A systemctl status check of that gives me: Jun 20 14:10:07 RackServer p4dctl[4186]: error: Connect to server failed; check $P4PORT.
connect: 127.0.0.1:1666: Connection refused
Jun 20 14:10:07 RackServer p4dctl[4188]: error: Connect to server failed; check $P4PORT.
connect: 127.0.0.1:1666: Connection refused
Jun 20 14:10:07 RackServer p4dctl[4189]: error: Connect to server failed; check $P4PORT.
connect: 127.0.0.1:1666: Connection refused
Jun 20 14:10:07 RackServer p4dctl[4190]: error: Connect to server failed; check $P4PORT.
connect: 127.0.0.1:1666: Connection refused
Jun 20 14:10:08 RackServer p4dctl[4181]: error: 'PerforceServer' p4d: '/opt/perforce/sbin/p4d' exited with status 255.
Jun 20 14:10:08 RackServer p4dctl[4181]: Started 0 services.
Jun 20 14:10:08 RackServer p4dctl[4181]: error: Not all services started successfully.
Jun 20 14:10:08 RackServer systemd[1]: helix-p4dctl.service: Control process exited, code=exited status=1
Jun 20 14:10:08 RackServer systemd[1]: helix-p4dctl.service: Failed with result 'exit-code'.
Jun 20 14:10:08 RackServer systemd[1]: Failed to start LSB: Starts all Perforce services.
That's similar to the error I now get trying to connect remotely with the p4v visual client:
Connect to server failed; check $P4PORT.
connect: 192.168.0.117:1666: Connection refused Checking the P4PORT environment variable on the server gives me: ...nothing. It SHOULD be ssl:1666 or just 1666. It used to be, until now. So if I set that to what it should be with export $P4PORT=ssl:1666
and then go try to start the service, I get the same error as the first time. Let's check the actual connection... admin@RackServer:~$ ping 192.168.0.117
PING 192.168.0.117 (192.168.0.117) 56(84) bytes of data.
64 bytes from 192.168.0.117: icmp_seq=1 ttl=64 time=0.052 ms
64 bytes from 192.168.0.117: icmp_seq=2 ttl=64 time=0.022 ms
64 bytes from 192.168.0.117: icmp_seq=3 ttl=64 time=0.017 ms
Same with: admin@RackServer:~$ ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.045 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.022 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.016 ms
And: admin@RackServer:~$ ping localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.054 ms
64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.018 ms
64 bytes from localhost (127.0.0.1): icmp_seq=3 ttl=64 time=0.014 ms
However, nmap doesn't show 1666 open... 21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
139/tcp open netbios-ssn
445/tcp open microsoft-ds
631/tcp open ipp
3306/tcp open mysql
3389/tcp open ms-wbt-server
Here's the ifconfig, just for reference.
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.117 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::da16:9fa8:aff2:2aef prefixlen 64 scopeid 0x20<link>
ether 00:04:23:d3:d0:92 txqueuelen 1000 (Ethernet)
RX packets 33063 bytes 2652752 (2.6 MB)
RX errors 0 dropped 2 overruns 0 frame 0
TX packets 1872 bytes 269690 (269.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 18 memory 0xb8820000-b8840000
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.116 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::659f:d321:8607:cc5f prefixlen 64 scopeid 0x20<link>
ether 00:04:23:d3:d0:93 txqueuelen 1000 (Ethernet)
RX packets 31082 bytes 2047269 (2.0 MB)
RX errors 0 dropped 2 overruns 0 frame 0
TX packets 531 bytes 41557 (41.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 19 memory 0xb8800000-b8820000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 5185 bytes 278583 (278.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5185 bytes 278583 (278.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
I'm not actually a networking guy by trade - and I'm still learning *nix - so I'm in way over my head, and I have to get that Perforce depot back online. Everything is there, the machine is just suddenly refusing to take connections - remote OR local - on 1666 for whatever reason. All the other services that have been working correctly are either still working or back to working. It's just this one. |
| Retrieve Win32_UserAccount object by its full (not "pre-Windows 2000") logon name Posted: 20 Jun 2022 02:10 PM PDT I'm attempting to look up the SID for a specific user account in a PowerShell script. Prior research suggests that this can be done using the Get-CimInstance command, like so: # This doesn't work for me Get-CimInstance -ClassName Win32_UserAccount -filter "Name='this_is_a_long_username'" | Format-List -Property *
In my case however, this doesn't work. This is because the username of the account I need to look up is especially long, longer that what Windows versions older than Windows 2000 can support. Despite the fact that it is currently 2022, not 2000, that means my code above is actually broken. Indeed, if I instead use a shorter version of the account's username, what Microsoft's Active Directory Users and Computers tool refers to as the account's "User logon name (pre-Windows 2000)", then the above code works fine: # This works Get-CimInstance -ClassName Win32_UserAccount -filter "Name='this_is_a_long_usern'" | Format-List -Property *
However, my script doesn't have a way to retrieve the account's "pre-Windows 2000" name; it only has the account's real (post Windows 2000) username, which may not have any relation at all to the account's pre-Windows 2000 name, since those two values can apparently be set independently in Active Directory. How can I get the SID of a user (and other Win32_UserAccount properties) given only that account's full (post Windows 2000) username? |
| Putting a caching nameserver in front of ad Posted: 20 Jun 2022 02:04 PM PDT I would like to set up a caching nameserver to meet some requirements in the datacenter. Some of these requirements make me to put this caching nameserver between my servers and AD (e.g. collecting some statistics, managing whole dns things at one spot etc) When I run some tests like joining a windows server to AD domain while the server is looking to this caching nameserver (lets say 10.10.10.10) and its forwarding (or replying from cache) that domain (lets say my.domain.com) to AD DNS, it actually works but partially. Server can join AD domain, I can login to server with my domain user, there is no trust issues, I can see the computer object in AD users and computers console, however, there is no DNS record created. I can't get an answer from nslookup. Whats going on during the join process? The caching name server I use is unbound btw. |
| vCenter Installation stuck at 56% Posted: 20 Jun 2022 01:05 PM PDT I installed vCenter on Virtualbox by importing the vmdk files. But afterI start the vCenter VM and go the UI, I see that its stuck at 56% and not progressing at all. I've ensured that DNS is working on the vCenter VM. Any idea what the issue is or what to check in order to resolve it. 
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| Apache2 SSL: None of the common names in the certificate match the name that was entered (works with www. but not without) Posted: 20 Jun 2022 12:40 PM PDT I'm using https://www.sslshopper.com/ssl-checker.html to check my site, and it's failing with this error message: None of the common names in the certificate match the name that was entered (example.net). You may receive an error when accessing this site in a web browser. It looks like you just need to add the "www." when accessing the site with SSL. Learn more about name mismatch errors.
My 000-default-le-ssl.conf is set up like this: <IfModule mod_ssl.c> <VirtualHost *:443> ServerAdmin webmaster@localhost DocumentRoot /var/www/html ServerName example.net ServerAlias www.example.net <Directory /var/www/html/> Options Indexes FollowSymLinks AllowOverride All Require all granted </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined <IfModule mod_dir.c> DirectoryIndex index.php index.pl index.cgi index.html index.xhtml index.htm </IfModule> Include /etc/letsencrypt/options-ssl-apache.conf RewriteEngine on RewriteCond %{SERVER_NAME} =example.net RewriteRule ^ https://www.%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent] SSLCertificateFile /etc/letsencrypt/live/www.example.net-0001/fullchain.pem SSLCertificateKeyFile /etc/letsencrypt/live/www.example.net-0001/privkey.pem </VirtualHost> <VirtualHost *:80> ServerName example.net ServerAlias www.example.net Redirect permanent / https://www.example.net/ </VirtualHost> </IfModule> <IfModule mod_ssl.c> <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/html <Directory /var/www/html/> Options Indexes FollowSymLinks AllowOverride All Require all granted </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined <IfModule mod_dir.c> DirectoryIndex index.php index.pl index.cgi index.html index.xhtml index.htm </IfModule> </VirtualHost>
Is it because I only have SSLCertificateFiles for www.example.net and I'm missing one for example.net? I tried to force a redirect to www.example.net to work around this if so. (Update: Solved below) |
| How to put a command that autostart daemon before login in Ubuntu server 20.04 Posted: 20 Jun 2022 12:27 PM PDT I have two programs in Ubuntu server 20.04, that located in: /home/kiko/go-btfs/cmd/btfs /home/kiko/node5007/cmd/btfs
They both run with command: ./btfs daemon How to make this command for both directories to autostart before login for server? I tried to create autostart service with sudo nano /etc/systemd/system/btfs_main.service and then put the following settings in the unit btfs_main.service: [Unit] Description=Starting_btfs_daemon Wants=network.target After=syslog.target network-online.target [Service] Type=simple ExecStart=/home/kiko/go-btfs/cmd/btfs/./btfs daemon ExecStart=/home/kiko/node5007/cmd/btfs/./btfs daemon Restart=on-failure RestartSec=10 KillMode=process [Install] WantedBy=multi-user.target
and then: sudo systemctl daemon-reload, sudo systemctl enable btfs_main.service, sudo systemctl start btfs_main.service, systemctl status btfs_main.service. With the final command i have some error: Unit btfs_main.service has a bad unit file setting. How do I configure unit settings for the both commands to run automatically? |
| memtest freezes, but otherwise system works OK (Debian) Posted: 20 Jun 2022 01:38 PM PDT I have a Debian 11 x64 system (info below) that works OK in general, but memtest simply freezes. It's not that it shows any errors, it just stops at say 40% of the test done and becomes unreactive. I've unplugged all of the 4 memory modules and tried them one by one with the same result. I've noticed that due to my Virtualbox Windows VMs regularly crashing. That's the only replicable problem I can find on the system. dmesg doesn't output anything in particular apart from that: [ 4.685877] EDAC skx: ECC is disabled on imc 1 [ 4.712627] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 4.997329] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 4.997336] EDAC skx: ECC is disabled on imc 1 [ 5.064602] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 5.529025] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 5.529038] EDAC skx: ECC is disabled on imc 1 [ 5.533872] intel_rapl_common: Found RAPL domain package [ 5.533883] intel_rapl_common: Found RAPL domain dram [ 5.533888] intel_rapl_common: DRAM domain energy unit 15300pj [ 5.568563] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 5.945331] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 5.945338] EDAC skx: ECC is disabled on imc 1 [ 5.964568] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.153759] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.153773] EDAC skx: ECC is disabled on imc 1 [ 6.184555] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.253825] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.253840] EDAC skx: ECC is disabled on imc 1 [ 6.284599] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.345738] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.345757] EDAC skx: ECC is disabled on imc 1 [ 6.376584] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.409120] igb 0000:06:00.0 eno1: igb: eno1 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX [ 6.409337] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready [ 6.481324] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.481337] EDAC skx: ECC is disabled on imc 1 [ 6.516619] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.581855] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.581870] EDAC skx: ECC is disabled on imc 1 [ 6.600557] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.673544] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.673565] EDAC skx: ECC is disabled on imc 1 [ 6.704593] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.773816] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.773837] EDAC skx: ECC is disabled on imc 1 [ 6.808606] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.913167] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.913182] EDAC skx: ECC is disabled on imc 1 [ 6.940595] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 [ 6.993580] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0: DEV 0000:64:0a.0 (INTERRUPT) [ 6.993602] EDAC skx: ECC is disabled on imc 1 [ 7.008595] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0: DEV 0000:64:0a.0
I'm not sure if those are memory modules or something on motherboard failing. How can I diagnose that? Most of the lshw output, I had to cut large swaths of it due to 30k character limitation: titan description: Computer product: SYS-5039AD-I (Default string) vendor: Supermicro version: 0123456789 serial: ..... width: 64 bits capabilities: smbios-3.1.1 dmi-3.1.1 smp vsyscall32 configuration: boot=normal family=Default string sku=Default string uuid=00000000-0000-0000-0000-AC1F6B660721 *-core description: Motherboard product: C9X299-PGF vendor: Supermicro physical id: 0 version: 1.01 serial: .... slot: Default string *-firmware description: BIOS vendor: American Megatrends Inc. physical id: 0 version: 1.1 date: 02/14/2018 size: 64KiB capacity: 16MiB capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int14serial int17printer acpi usb biosbootspecification uefi *-memory description: System Memory physical id: 1c slot: System board or motherboard size: 32GiB *-bank:0 description: DIMM Synchronous [empty] product: NO DIMM vendor: NO DIMM physical id: 0 serial: NO DIMM slot: DIMMA1 *-bank:1 description: DIMM Synchronous [empty] product: NO DIMM vendor: NO DIMM physical id: 1 serial: NO DIMM slot: DIMMA2 *-bank:2 description: DIMM Synchronous [empty] product: NO DIMM vendor: NO DIMM physical id: 2 serial: NO DIMM slot: DIMMB1 *-bank:3 description: DIMM Synchronous [empty] product: NO DIMM vendor: NO DIMM physical id: 3 serial: NO DIMM slot: DIMMB2 *-bank:4 description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns) product: HMA81GU7AFR8N-UH vendor: SK Hynix physical id: 4 serial: .... slot: DIMMC1 size: 8GiB width: 64 bits clock: 2400MHz (0.4ns) *-bank:5 description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns) product: 18ASF1G72AZ-2G3B1 vendor: Micron physical id: 5 serial: ... slot: DIMMC2 size: 8GiB width: 64 bits clock: 2400MHz (0.4ns) *-bank:6 description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns) product: M391A1K43BB1-CRC vendor: Samsung physical id: 6 serial: ... slot: DIMMD1 size: 8GiB width: 64 bits clock: 2400MHz (0.4ns) *-bank:7 description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns) product: M391A1K43BB1-CRC vendor: Samsung physical id: 7 serial: .... slot: DIMMD2 size: 8GiB width: 64 bits clock: 2400MHz (0.4ns) *-cache:0 description: L1 cache physical id: 2f slot: L1 Cache size: 512KiB capacity: 512KiB capabilities: synchronous internal write-back instruction configuration: level=1 *-cache:1 description: L2 cache physical id: 30 slot: L2 Cache size: 8MiB capacity: 8MiB capabilities: synchronous internal varies unified configuration: level=2 *-cache:2 description: L3 cache physical id: 31 slot: L3 Cache size: 11MiB capacity: 11MiB capabilities: synchronous internal varies unified configuration: level=3 *-cpu description: CPU product: Intel(R) Core(TM) i7-7820X CPU @ 3.60GHz vendor: Intel Corp. physical id: 32 bus info: cpu@0 version: Intel(R) Core(TM) i7-7820X CPU @ 3.60GHz slot: CPU size: 1199MHz capacity: 4500MHz width: 64 bits clock: 100MHz capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp x86-64 constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single pti ssbd mba ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts md_clear flush_l1d arch_capabilities cpufreq configuration: cores=8 enabledcores=8 threads=16 *-pci:0 description: Host bridge product: Sky Lake-E DMI3 Registers vendor: Intel Corporation physical id: 100 bus info: pci@0000:00:00.0 version: 04 width: 32 bits clock: 33MHz *-generic:0 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4 bus info: pci@0000:00:04.0 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:79 memory:90944000-90947fff *-generic:1 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4.1 bus info: pci@0000:00:04.1 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:82 memory:90940000-90943fff *-generic:2 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4.2 bus info: pci@0000:00:04.2 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:79 memory:9093c000-9093ffff *-generic:3 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4.3 bus info: pci@0000:00:04.3 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:82 memory:90938000-9093bfff *-generic:4 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4.4 bus info: pci@0000:00:04.4 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:79 memory:90934000-90937fff *-generic:5 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4.5 bus info: pci@0000:00:04.5 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:82 memory:90930000-90933fff *-generic:6 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4.6 bus info: pci@0000:00:04.6 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:79 memory:9092c000-9092ffff *-generic:7 description: System peripheral product: Sky Lake-E CBDMA Registers vendor: Intel Corporation physical id: 4.7 bus info: pci@0000:00:04.7 version: 04 width: 64 bits clock: 33MHz capabilities: msix pciexpress pm bus_master cap_list configuration: driver=ioatdma latency=0 resources: irq:82 memory:90928000-9092bfff *-generic:8 UNCLAIMED description: System peripheral product: Sky Lake-E MM/Vt-d Configuration Registers vendor: Intel Corporation physical id: 5 bus info: pci@0000:00:05.0 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-generic:9 UNCLAIMED description: System peripheral product: Sky Lake-E RAS vendor: Intel Corporation physical id: 5.2 bus info: pci@0000:00:05.2 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-generic:10 UNCLAIMED description: PIC product: Sky Lake-E IOAPIC vendor: Intel Corporation physical id: 5.4 bus info: pci@0000:00:05.4 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress pm io_x_-apic bus_master cap_list configuration: latency=0 resources: memory:90951000-90951fff *-generic:11 UNCLAIMED description: System peripheral product: Sky Lake-E Ubox Registers vendor: Intel Corporation physical id: 8 bus info: pci@0000:00:08.0 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-generic:12 UNCLAIMED description: Performance counters product: Sky Lake-E Ubox Registers vendor: Intel Corporation physical id: 8.1 bus info: pci@0000:00:08.1 version: 04 width: 32 bits clock: 33MHz configuration: latency=0 *-generic:13 UNCLAIMED description: System peripheral product: Sky Lake-E Ubox Registers vendor: Intel Corporation physical id: 8.2 bus info: pci@0000:00:08.2 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-communication description: Communication controller product: 200 Series PCH CSME HECI #1 vendor: Intel Corporation physical id: 16 bus info: pci@0000:00:16.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=mei_me latency=0 resources: irq:81 memory:9094d000-9094dfff *-sata description: SATA controller product: 200 Series PCH SATA controller [AHCI mode] vendor: Intel Corporation physical id: 17 bus info: pci@0000:00:17.0 logical name: scsi1 version: 00 width: 32 bits clock: 66MHz capabilities: sata msi pm ahci_1.0 bus_master cap_list emulated configuration: driver=ahci latency=0 resources: irq:62 memory:90948000-90949fff memory:9094c000-9094c0ff ioport:4050(size=8) ioport:4040(size=4) ioport:4020(size=32) memory:9094b000-9094b7ff *-disk description: ATA Disk product: ST4000NM0035-1V4 physical id: 0.0.0 bus info: scsi@1:0.0.0 logical name: /dev/sda version: TN04 serial: .... size: 3726GiB (4TB) capabilities: gpt-1.00 partitioned partitioned:gpt configuration: ansiversion=5 guid=9176314b-cdd6-4a53-99e3-1fc255958b93 logicalsectorsize=512 sectorsize=512 *-volume:0 -pci:0 description: PCI bridge product: 200 Series PCH PCI Express Root Port #17 vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: f0 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:24 *-pci:1 description: PCI bridge product: 200 Series PCH PCI Express Root Port #19 vendor: Intel Corporation physical id: 1b.2 bus info: pci@0000:00:1b.2 version: f0 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:25 memory:90800000-908fffff *-usb description: USB controller product: ASM2142 USB 3.1 Host Controller vendor: ASMedia Technology Inc. physical id: 0 bus info: pci@0000:02:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: msi msix pm pciexpress xhci bus_master cap_list configuration: driver=xhci_hcd latency=0 resources: irq:18 memory:90800000-90807fff *-usbhost:0 product: xHCI Host Controller vendor: Linux 5.10.0-15-amd64 xhci-hcd physical id: 0 bus info: usb@3 logical name: usb3 version: 5.10 capabilities: usb-2.00 configuration: driver=hub slots=2 speed=480Mbit/s *-usb description: USB hub product: Hub vendor: ATEN International Co., Ltd physical id: 2 bus info: usb@3:2 version: 1.00 capabilities: usb-1.10 configuration: driver=hub maxpower=100mA slots=4 speed=12Mbit/s *-usb description: Keyboard product: HDMI KVM V1.2.114 vendor: ATEN Advance Tech Inc. physical id: 1 bus info: usb@3:2.1 version: 1.00 capabilities: usb-1.10 configuration: driver=usbhid maxpower=100mA speed=12Mbit/s *-usbhost:1 product: xHCI Host Controller vendor: Linux 5.10.0-15-amd64 xhci-hcd physical id: 1 bus info: usb@4 logical name: usb4 version: 5.10 capabilities: usb-3.10 configuration: driver=hub slots=2 speed=10000Mbit/s *-pci:2 description: PCI bridge product: 200 Series PCH PCI Express Root Port #21 vendor: Intel Corporation physical id: 1b.4 bus info: pci@0000:00:1b.4 version: f0 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:26 memory:90700000-907fffff *-storage description: Non-Volatile memory controller product: NVMe SSD Controller SM961/PM961/SM963 vendor: Samsung Electronics Co Ltd physical id: 0 bus info: pci@0000:03:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: storage pm msi pciexpress msix nvm_express bus_master cap_list configuration: driver=nvme latency=0 resources: irq:16 memory:90700000-90703fff *-pci:3 description: PCI bridge product: 200 Series PCH PCI Express Root Port #1 vendor: Intel Corporation physical id: 1c bus info: pci@0000:00:1c.0 version: f0 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:27 memory:90600000-906fffff *-usb description: USB controller product: ASM2142 USB 3.1 Host Controller vendor: ASMedia Technology Inc. physical id: 0 bus info: pci@0000:04:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: msi msix pm pciexpress xhci bus_master cap_list configuration: driver=xhci_hcd latency=0 resources: irq:16 memory:90600000-90607fff *-usbhost:0 product: xHCI Host Controller vendor: Linux 5.10.0-15-amd64 xhci-hcd physical id: 0 bus info: usb@5 logical name: usb5 version: 5.10 capabilities: usb-2.00 configuration: driver=hub slots=2 speed=480Mbit/s *-usb description: Audio device product: Plantronics C320-M vendor: Plantronics physical id: 2 bus info: usb@5:2 version: 1.35 serial: ... capabilities: usb-2.00 audio-control configuration: driver=usbhid maxpower=100mA speed=12Mbit/s *-usbhost:1 product: xHCI Host Controller vendor: Linux 5.10.0-15-amd64 xhci-hcd physical id: 1 bus info: usb@6 logical name: usb6 version: 5.10 capabilities: usb-3.10 configuration: driver=hub slots=2 speed=10000Mbit/s *-pci:4 description: PCI bridge product: 200 Series PCH PCI Express Root Port #4 vendor: Intel Corporation physical id: 1c.3 bus info: pci@0000:00:1c.3 version: f0 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:28 memory:90000000-904fffff *-network description: Ethernet interface product: AQC108 NBase-T/IEEE 802.3bz Ethernet Controller [AQtion] vendor: Aquantia Corp. physical id: 0 bus info: pci@0000:05:00.0 logical name: eth0 version: 02 serial: .... capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pciexpress pm msix msi vpd bus_master cap_list rom ethernet physical tp 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=atlantic driverversion=5.10.0-15-amd64 firmware=1.5.58 latency=0 link=no multicast=yes port=twisted pair resources: irq:19 memory:90440000-9044ffff memory:90450000-90450fff memory:90000000-903fffff memory:90400000-9043ffff *-pci:5 description: PCI bridge product: 200 Series PCH PCI Express Root Port #5 vendor: Intel Corporation physical id: 1c.4 bus info: pci@0000:00:1c.4 version: f0 width: 32 bits clock: 33MHz capabilities: pci pciexpress msi pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:29 ioport:3000(size=4096) memory:90500000-905fffff *-isa description: ISA bridge product: X299 Chipset LPC/eSPI Controller vendor: Intel Corporation physical id: 1f bus info: pci@0000:00:1f.0 version: 00 width: 32 bits clock: 33MHz capabilities: isa bus_master configuration: latency=0 *-memory UNCLAIMED description: Memory controller product: 200 Series/Z370 Chipset Family Power Management Controller vendor: Intel Corporation physical id: 1f.2 bus info: pci@0000:00:1f.2 version: 00 width: 32 bits clock: 33MHz (30.3ns) capabilities: bus_master configuration: latency=0 resources: memory:90924000-90927fff *-multimedia description: Audio device product: 200 Series PCH HD Audio vendor: Intel Corporation physical id: 1f.3 bus info: pci@0000:00:1f.3 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=snd_hda_intel latency=32 resources: irq:90 memory:90920000-90923fff memory:90900000-9090ffff *-serial description: SMBus product: 200 Series/Z370 Chipset Family SMBus Controller vendor: Intel Corporation physical id: 1f.4 bus info: pci@0000:00:1f.4 version: 00 width: 64 bits clock: 33MHz configuration: driver=i801_smbus latency=0 resources: irq:16 memory:9094a000-9094a0ff ioport:4000(size=32) *-generic:0 UNCLAIMED description: System peripheral product: Sky Lake-E VT-d vendor: Intel Corporation physical id: 1 bus info: pci@0000:16:05.0 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-generic:1 UNCLAIMED description: System peripheral product: Sky Lake-E RAS Configuration Registers vendor: Intel Corporation physical id: 2 bus info: pci@0000:16:05.2 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-generic:2 UNCLAIMED description: PIC product: Sky Lake-E IOxAPIC Configuration Registers vendor: Intel Corporation physical id: 4 bus info: pci@0000:16:05.4 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress pm io_x_-apic bus_master cap_list configuration: latency=0 resources: memory:92300000-92300fff *-generic:3 UNCLAIMED *-generic:31 UNCLAIMED description: System peripheral product: Sky Lake-E PCU Registers vendor: Intel Corporation physical id: 1e.4 bus info: pci@0000:16:1e.4 version: 04 width: 32 bits clock: 33MHz configuration: latency=0 *-generic:32 UNCLAIMED description: System peripheral product: Sky Lake-E PCU Registers vendor: Intel Corporation physical id: 1e.5 bus info: pci@0000:16:1e.5 version: 04 width: 32 bits clock: 33MHz configuration: latency=0 *-generic:33 UNCLAIMED description: System peripheral product: Sky Lake-E PCU Registers vendor: Intel Corporation physical id: 1e.6 bus info: pci@0000:16:1e.6 version: 04 width: 32 bits clock: 33MHz configuration: latency=0 *-pci:1 description: PCI bridge product: Sky Lake-E PCI Express Root Port A vendor: Intel Corporation physical id: 101 bus info: pci@0000:64:00.0 version: 04 width: 64 bits clock: 33MHz capabilities: pci msi pciexpress pm normal_decode bus_master cap_list configuration: driver=pcieport resources: iomemory:2000b0b00-2000b0aff irq:31 ioport:b000(size=4096) memory:b2000000-b30fffff ioport:a0000000(size=301989888) *-display description: VGA compatible controller product: GP102 [GeForce GTX 1080 Ti] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:65:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:95 memory:b2000000-b2ffffff memory:a0000000-afffffff memory:b0000000-b1ffffff ioport:b000(size=128) memory:c0000-dffff *-multimedia description: Audio device product: GP102 HDMI Audio Controller vendor: NVIDIA Corporation physical id: 0.1 bus info: pci@0000:65:00.1 version: a1 width: 32 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=snd_hda_intel latency=0 resources: irq:91 memory:b3080000-b3083fff *-generic:34 UNCLAIMED description: System peripheral product: Sky Lake-E VT-d vendor: Intel Corporation physical id: 8 bus info: pci@0000:64:05.0 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-generic:35 UNCLAIMED description: System peripheral product: Sky Lake-E RAS Configuration Registers vendor: Intel Corporation physical id: 9 bus info: pci@0000:64:05.2 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: latency=0 *-generic:36 UNCLAIMED description: PIC product: Sky Lake-E IOxAPIC Configuration Registers vendor: Intel Corporation physical id: 10 bus info: pci@0000:64:05.4 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress pm io_x_-apic bus_master cap_list configuration: latency=0 resources: memory:b3100000-b3100fff *-generic:37 description: System peripheral product: Sky Lake-E Integrated Memory Controller vendor: Intel Corporation physical id: 11 bus info: pci@0000:64:08.0 version: 04 width: 32 bits clock: 33MHz capabilities: pciexpress cap_list configuration: driver=skx_uncore latency=0 resources: irq:0 *-pci:2 description: PCI bridge product: Sky Lake-E PCI Express Root Port D vendor: Intel Corporation physical id: 3 bus info: pci@0000:b2:03.0 version: 04 width: 32 bits clock: 33MHz capabilities: pci msi pciexpress pm normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:33 ioport:f000(size=4096) memory:fa000000-fb0fffff ioport:e0000000(size=301989888) *-display description: VGA compatible controller product: GV100 [TITAN V] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:b3:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:96 memory:fa000000-faffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:f000(size=128) memory:fb000000-fb07ffff *-multimedia description: Audio device product: NVIDIA Corporation vendor: NVIDIA Corporation physical id: 0.1 bus info: pci@0000:b3:00.1 version: a1 width: 32 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=snd_hda_intel latency=0 resources: irq:92 memory:fb080000-fb083fff *-generic:63 UNCLAIMED ...
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| How to change DefaultTasksMax in system.conf? Posted: 20 Jun 2022 02:00 PM PDT I want to change the DefaultTasksMax in /etc/systemd/system.conf but won't change. The command: systemctl show --property=DefaultTasksMax
still (even after server restart) produces this output: DefaultTasksMax=105
What am I doing wrong? Some other informations: the server is hosted on Strato.com, it runs Ubuntu 20.04.4 LTS. |
| Correct way to put a MySQL replicated environment safely into maintenance mode? Posted: 20 Jun 2022 12:54 PM PDT I need to perform some maintenance on our master/slave/slave MySQL cluster. The maintenance involves optimising three tables, at least one of which is being locked for a duration of approximately 2 hours. The optimise operation for each table runs to completion on the master and then propagates to the slaves in turn via the binary log when complete. The way I see it I currently have 3 options: - Restart master with
skip-networking, run the optimise and then bring it back online afterwards and allow the slaves to catch up. - Bring all 3 nodes offline concurrently, run the optimise operations in parallel in parallel, and reset replication afterwards.
- Cleanly stop MySQL on the nodes, shut off networking to the outside world, bring them back up, run the optimise on master and allow it to propagate to the slaves before restoring network access.
I'm struggling to find any documentation on best practices for this, or the exact behaviour of the shutdown, is anybody able to confirm the best way to safely bring the boxes offline to perform the necessary work? Performing the operation cleanly is of bigger concern than the time taken, as the maintenance will be performed overnight. The MySQL version is 5.6, it unfortunately is an older version, plans are in place to upgrade in the near future but I'm stuck with it for the time being. The replication method is GTID. Many thanks. |
| CORS error - Website is not reachable (ERR_FAILED), then redirects and works by itself Posted: 20 Jun 2022 01:50 PM PDT Error: I get "This site can't be reached ..." and then it automatically redirects and then the page works. Please see the screengrab GIF below. 
This error happens in random unpredictable intervals. On average it occurs once in ten times. It happens even in a plain HTML page where there is no content. I tested with only a "Hello World" text. There are no CSS or other file includes, and no access to third-party websites. In Chrome Dev Tools, Status says CORS error and then redirects and the page displays. This is occurring only on the latest Chrome browsers (Chromium: 102.0.5005.) Latest as of the moment. This issue started from 25-May-2022 which coincides with the date of launch of this Chrome 102.0.5005. I tested on Chrome Beta (103.0.5060 the next version due) and it is reproducible. The traffic stats from Google Analytics has also dropped by around 20%. This drop started from the same date 25-May-2022. I checked the hosting server error log and there are no errors. I have hosted all my websites in DreamHost VPS and it occurs in all my websites. I checked a random website (not mine) hosted in DreamHost and can reproduce this issue. Steps to reproduce: - Use latest Chrome browsers (Chrome or Brave) Chromium: 102.0.5005.
- Go to Website https://www.mattbeno.com/
- Refresh like around 10 times with a few seconds interval between each refresh.
Please help to fix this issue. |
| ESX hosts crash within same vcenter cluster Posted: 20 Jun 2022 02:02 PM PDT I have a vcenter cluster of 12 ESX hosts (ClusterA) and another cluster of 3 ESX hosts (ClusterB). All of these are a mix of poweredge r620s and r630s. Some of the hosts have hardware errors that can be seen in the iDRAC logs and front LCD screen such as: - CPU machine check error
- Correctable memory error rate exceeded As expected, this is causing those hosts to be unavailable (Not responding) in the cluster.
Fixing these hardware errors usually involves these steps: - power off
- remove network cards
- power on and wait for successful boot to OS
- power off
- place the same network cards back in
- power on It's strange to me that this would fix CPU & memory errors, but that's what happens consistently.
ClusterB is fine - no problems ever. The real problem I'm facing is that when I fix a couple hosts from ClusterA, 1-3 other random hosts in ClusterA will crash within a day or two. After those initial 1-3 crashes, if I leave things alone, no more hosts crash afterwards for weeks. This puts me back to where I started and I've observed this behavior several times now. Any ideas on what to check? |
| Dell PowerEdge R410: Format SAS NetApp drives to 512B sector size for use in RAID Posted: 20 Jun 2022 02:30 PM PDT Thanks for helping out. Some time ago I got two 400GB NetApp drives for use in my Poweredge server. I attempted for a while to get them to work but they would not join a RAID disk group. I found this is because the drives have been formatted with 520 byte sector size, and they need to be 512 bytes. I attempted to format the drives but I cannot access them within the stored operating system (Proxmox) or a live USB of Mint or Ubuntu. I'm looking for some way to somehow directly access these drives from some Linux system so I can run the necessary commands to format the drive sector sizes, but if there's a better way to do that I'm open to suggestions. The only way I can access these drives are through the front hard drive slots of my server. I have no other device that allows SAS đrives. Unless there's some way inside the server, which there did not appear to be but I could have glanced over it. I've tried for a while to get the SAS NetApp drives to work but to of no avail, so I'm hoping that any of you can give me hints or help me out, feel free to ask questions. Thanks again. |
| Dell iDRAC on dedicated NIC not accessible from the server itself Posted: 20 Jun 2022 02:35 PM PDT I have a Dell PE R720xd server with an enterprise iDRAC license. I have iDRAC configured to use the dedicated NIC. I can access iDRAC from anywhere except the actual server itself. I could understand this happening if I were sharing iDRAC with one of the four onboard NICs, but I'm not -- it's the dedicated NIC. Google searches for this were not helpful. |
| Using a RAID Controller as Pass-thru vs RAID0 Posted: 20 Jun 2022 02:45 PM PDT I have a server with DellPerc H750 Storage controller. I want to use the controller as Pass-thru/Non-RAID but I have the below questions: A) Is it possible in the future to replace the controller with a HBA one without losing data ? B) If I used the RAID0 configuration for each disk independently instead of the pass-thru config , would that lead to a better performance or not ? |
| kolla ansible deployment stuck at Nova API bootstrap container Posted: 20 Jun 2022 12:28 PM PDT I am deploying openstack (for kypo cyber range) using kolla-ansible. I have followed all the steps on official guide. However I am stuck on Nova API bootstrap container for almost half a day. I have looked into mariadb.log file and it says 2022-01-17 11:40:36 1009 [Warning] Aborted connection 1009 to db: 'placement' user: 'placement' host: 'kypo-virtual-machine' (Got an error reading communication packets) 2022-01-17 11:41:14 1028 [Warning] Aborted connection 1028 to db: 'placement' user: 'placement' host: 'kypo-virtual-machine' (Got an error reading communication packets) 2022-01-17 11:41:52 1047 [Warning] Aborted connection 1047 to db: 'placement' user: 'placement' host: 'kypo-virtual-machine' (Got an error reading communication packets) 2022-01-17 11:42:29 1064 [Warning] Aborted connection 1064 to db: 'placement' user: 'placement' host: 'kypo-virtual-machine' (Got an error reading communication packets) 2022-01-17 16:49:41 0 [Warning] WSREP: last inactive check more than PT1.5S ago (PT2.13542S), skipping check 2022-01-17 16:49:46 0 [Warning] WSREP: last inactive check more than PT1.5S ago (PT2.49028S), skipping check 2022-01-17 16:51:21 0 [Warning] WSREP: last inactive check more than PT1.5S ago (PT1.56325S), skipping check 2022-01-17 21:23:02 0 [Warning] WSREP: last inactive check more than PT1.5S ago (PT2.2194S), skipping check
All I can see is its a connection problem. Can anyone please guide how to get over it? |
| Azure Scale-set how to monitor memory utilization Posted: 20 Jun 2022 02:03 PM PDT How do I monitor memory utilization for Azure Scale-set default metrics is only CPU Disk and network. Why does Azure not provide memory utilization by default |
| Outlook and OWA search not working - no results Posted: 20 Jun 2022 01:00 PM PDT Our environment consists of a single Exchange 2016 CU8 server and multiple clients using Outlook and OWA. Searching (fast search and advanced find) both are not working in either OWA or Outlook desktop. The results are simply empty with "no items found." Additional weird symptoms:
MSExchangeFastSearch is throwing the following in Event Viewer: An operation attempted against a FAST endpoint exprienced an exception. This operation may be retried. Error details: Microsoft.Exchange.Search.Fast.PerformingFastOperationException: An Exception was received during a FAST operation. ---> System.ServiceModel.FaultException: Could not load file or assembly 'Microsoft.Exchange.TransportFlowMdm.105, Version=1.0.0.0, Culture=neutral, PublicKeyToken=0fbbedb750799a68' or one of its dependencies. The system cannot find the file specified.
And when checking on the database content status of the newly created DB: ContentIndexState : Unknown ContentIndexErrorMessage : Could not find registry value of Index Status for database {3c0560f8-3c41-45cc-b176-823123ba9e26}.
Steps I've tried:
1) Rebuilding content index (now it shows "healthy"
2) Moving mailboxes to new database I'll be upgrading to CU9 over the weekend as a last-ditch effort. Anyone have ideas? |
| Make IIS server max_file_upload size 10GB Posted: 20 Jun 2022 01:00 PM PDT I am working on a website that is hosted with the company's own server, using IIS. I was wondering if it's possible to make the make file upload size 10GB? Their assets they send and receive to clients are generally between 5GB to 10GB. Just wondering what changes are necessary to achieve this (changing upload_max_filesize, post_max_size, memory_limit). I am going to try to raise the limit tomorrow. Best, Matt |
| Start/stop windows service as user from command line Posted: 20 Jun 2022 03:01 PM PDT How can I start a service from the command line e.g. net start "sql server (sqlexpress2016)" without running with elevated privileges? The short answer is "you can't".
But how come then Services services.msc can start the same service without elevated privileges?
Is there a way to mimic this through the command line? Clarification:
I am not looking for a way to change the service's security level but more like something on the command prompt like C:\>win-su net start SqlServer2016. where win-su has the rights and super powers to automagically recognise me as an admin and raise the security level for the net process. |
| Proper Way to set Preferred DNS Server on the Windows Domain Controllers themselves? Posted: 20 Jun 2022 02:29 PM PDT This may be a basic question, but I'm not sure how to properly phrase what I'm looking for, with a google search. I have two Windows Server 2012 R2 domain controllers on the local network. Let's say Controller1 has an IP address of 192.168.1.1. Controller2 has an IP address of 192.168.1.2. Our client machines on the network have Controller1 set as the preferred DNS, and Controller2 as the alternate choice. My question is: What should the "Use the Following DNS Server Addresses" fields be set to, on the Domain controllers themselves? Currently, Controller1 has 192.168.1.1 (itself) set as the Preferred, and nothing set for the alternate. Controller2 has 192.168.1.1 set as the preferred, and 127.0.0.1 as the alternate. This was set up a year ago, by someone who I'm not entirely sure knew what they were doing. I'm certainly no expert myself, and so I'd like to doublecheck if the current settings they had made make sense. Thank you for your time. |
| How to serve static files with version number with Nginx? Posted: 20 Jun 2022 03:01 PM PDT I just finished installing Nginx for wordpress but all static files with ?ver=x is redirecting to nginx's default page. Working /jquery-ui-1.8.6.custom.min.js Redirecting to default Nginx page /jquery-ui-1.8.6.custom.min.js?ver=1 Here is my configuration. What am I missing here? server { listen 80; root /var/www/domain.com; index index.php index.html index.htm; server_name domain.com; location / { try_files $uri $uri/ /index.php?q=$uri&$args; } error_page 404 /404.html; error_page 500 502 503 504 /50x.html; location = /50x.html { root /usr/share/nginx/www; } # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 location ~ \.php$ { try_files $uri =404; #fastcgi_pass 127.0.0.1:9000; # With php5-fpm: fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; include fastcgi_params; } }
Thanks everyone in advance. |
| Roundcube domain change for a single account Posted: 20 Jun 2022 02:03 PM PDT I have inherited a server that is running some ugly roundcube php interface for mail accounts. I would like to change a domain for specific account to custom domain that I have set up on my DNS. I have added users to system and created aliases in my postfix configuration. In file /usr/local/www/roundcube/config/main.inc.php I have a line like $rcmail_config['default_host'] = 'mail.domain.com'; and this is setting all new accounts to have @mail.domain.com domain in their mails. I also have tried to change this by logging in to this account through roundcube interface and in Settings -> Identies I have E-Mail line that I can't change. I see there is also some mysql database for this roundcube installation. If someone could point me where exactly I should change domain name for specific accounts (not for all accounts, like in the line I quoted above). |
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