Recent Questions - Server Fault

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• What are the functions / AT commands to change BTS station via my GSM modem?
• Cannot make any outgoing TLS/SSL connections from a server
• Compare disk usage snapshots
• Is there a way to monitor remotly multiple windows server for hardware performance?
• Interface Metric is empty for VPN
• Setup postfix as smtp relay
• masking after redrection using .htaccess [duplicate]
• ksetup - Failed /GetEncTypeAttr : 0xc0000034
• How do I add the file location in data of exim
• MariaDB / MySQL start fails: [ERROR] Can't create IP socket: Temporary failure in name resolution
• How to assign a static IP with molecule-podman?
• PMTUD/ICMP black hole problems across a VXLAN tunnel
• Samba server not releasing record locks on network disconnection
• How can I set the 'The other domain supports Kerberos AES Encryption' setting programmatically?
• how to stop that ip requests and how to find that files who start the progress
• Jenkins Pipeline: Build docker within docker container
• Windows Firewall causes TCP inbound connection time-out instead of connection refused when no server is connecting clients
• How to install Mysql 5.6 on RHEL8 from Mysql repos?
• How to monitor nginx running on a docker container with ngxtop running on my mac host?
• Tap interface using netplan?
• MariaDB Galera SST Fails
• Fatal error: Incompatible file format: The encoded file has format major ID 1, whereas the Loader expects 4 in ... on line 0

What are the functions / AT commands to change BTS station via my GSM modem? Posted: 21 Apr 2022 01:46 AM PDT I have a GSM modem (Huawei E3276 LTE), is there any way in Python to change BTS station to another ? Regards

Cannot make any outgoing TLS/SSL connections from a server Posted: 21 Apr 2022 01:25 AM PDT As of yesterday it seems we have some magical error on the win server 2012-r2, where attempts to establish TLS/SSL fail with timeout. Network appears to be reachable (ping, traceroute), however upon any attempts to establish TLS it fails. Any ideas? Thanks, Janis

Compare disk usage snapshots Posted: 21 Apr 2022 01:17 AM PDT I have a cloud server setup: Ubuntu 20.04 CyberPanel OpenLiteSpeed When I installed the setup, the disk space (40 GB) usage was 50%, now after a month it is 80%. I have removed all files in /usr/local/lsws/logs/ and there are not much emails. How to find which file / folder is increasing in space? One way is to take a snapshot of all files and folder with file size, and compare it with today and a few days after. Is there a way to do it? How to take complete snapshot of all files and older with their filesize? Or any other way?

Is there a way to monitor remotly multiple windows server for hardware performance? Posted: 21 Apr 2022 01:16 AM PDT We have 5 server installed as VM with "Windows Server 2016" on VMWware. These servers are configured as RDS, means multiple users are working on it. Users which are connected on these servers are running heavy workload. Sometimes it happens, that the server is crashing. Means it has a black screen, so no possibility to access over RDP. However access on filesystem over UNC is still possible. I would like to ask about a possiblity to real time monitor these servers. I was thinking about installing a server, which has the service installed and is doing remote monitoring these 5 servers in realtime. Is there any role build in Windows Server to use it? Thank you.

Interface Metric is empty for VPN Posted: 21 Apr 2022 01:13 AM PDT When connected to VPN, the interface metric for the VPN interface is empty. I referred to Microsoft docs and it says the interface metric range is 5-50 depending on the link speed. Does empty refer to any default value. This is not causing any issues but I just want to understand why is that empty and how it was set, if the valid range is 5-50.

Setup postfix as smtp relay Posted: 21 Apr 2022 01:04 AM PDT I have a running centos 7 server with postfix configured to allow incoming mails to my domain, say, to test@example.org Now I want to send a mail FROM this test@example.org. My old ISP used to have a smtp-out server that would accept me as a known mail client with a username and password. But my current one doesn't provide a smtp server. How can I configure postfix to do the same when the mail from is test@example.org and with a username and password? Best,

masking after redrection using .htaccess [duplicate] Posted: 21 Apr 2022 12:55 AM PDT I have read many examples that use the .htaccess file method to mask a url. None of them works for me. It might be something simple that I am missing. Please bare with me. Here is what i want to do: I have a subdomain under a dns name, lets say it is mysub.domain . I have an index.html file there that redirects lets say to mycomplex.dns.site. The redirection is done successfully via <meta http-equiv="refresh" content="0;url=http://mycomplex.dns.site:8081" /> in my index.html When the page is loaded in Firefox, the url on the address bar, says http://mycomplex.dns.site:8081. I don't want this I would like to show mysub.domain, so I created a .htaccess file in the /var/www/html target directory that says: RewriteEngine On RewriteRule "^/mycomplex.dns.site:8081$" "http://mysub.domain/intex.html" [R] And this doesn't work! I keep getting the url as mycomplex.dns.site:8081 I have tried to redirect with a .htaccess redirection in mysub.domain which works but the target mycomplex.dns.site url description remains. The host computer with index.html is a raspberry with apache2. I have tried many variations but it doesn't work. Should it be something is Apache2 config files?

ksetup - Failed /GetEncTypeAttr : 0xc0000034 Posted: 21 Apr 2022 12:34 AM PDT On the DC of a single-AD forest, I am logged in as the default domain administrator Administrator (in this case also the enterprise administrator). In an elevated PowerShell, I try to get the Kerberos encryption types with the following command (as documented here): ksetup /getenctypeattr my.example.com But I get an error message instead: Query of attributes on MY.EXAMPLE.COM failed with 0xc0000034 Failed /GetEncTypeAttr : 0xc0000034 In consequence (most probably), I also get this error when trying to set the encryption types, as described in this question, which currently does not have a serious answer, unfortunately. This does happen on Windows Server 2016 and also on Windows Server 2019, which have been setup by mostly using default settings. How can a simple get fail? The error code does not seem to be documented. Does someone know how to troubleshoot or solve this problem?

How do I add the file location in data of exim Posted: 21 Apr 2022 01:25 AM PDT catchall: driver = redirect domains = lsearch;/etc/userdomains address_data = \ "router=$router_name \ redirect=${quote:${lookup \ {\N*\N} \ nwildlsearch{${extract{5}{::}}/etc/${perl{untaint}{$domain}}/aliases} \ {$value} \ }}" data = ${extract{redirect}{$address_data}} allow_fail in case instead of address data if I use data = :fail:Reason then its working. can any one help if I place this data in /home/user/etc/domain.com/aliases file so how will I read this?

MariaDB / MySQL start fails: [ERROR] Can't create IP socket: Temporary failure in name resolution Posted: 20 Apr 2022 11:59 PM PDT On my debian after upgrading from MySQL to MariaDB, I can't start the database anymore. The error I get is: 2022-04-21 9:53:13 0 [Note] mysqld (mysqld 10.3.34-MariaDB-0+deb10u1) starting as process 30342 ... 2022-04-21 9:53:13 0 [Note] InnoDB: Using Linux native AIO 2022-04-21 9:53:13 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2022-04-21 9:53:13 0 [Note] InnoDB: Uses event mutexes 2022-04-21 9:53:13 0 [Note] InnoDB: Compressed tables use zlib 1.2.11 2022-04-21 9:53:13 0 [Note] InnoDB: Number of pools: 1 2022-04-21 9:53:13 0 [Note] InnoDB: Using generic crc32 instructions 2022-04-21 9:53:13 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M 2022-04-21 9:53:13 0 [Note] InnoDB: Completed initialization of buffer pool 2022-04-21 9:53:13 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). 2022-04-21 9:53:14 0 [Note] InnoDB: 128 out of 128 rollback segments are active. 2022-04-21 9:53:14 0 [Note] InnoDB: Creating shared tablespace for temporary tables 2022-04-21 9:53:14 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ... 2022-04-21 9:53:14 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB. 2022-04-21 9:53:14 0 [Note] InnoDB: Waiting for purge to start 2022-04-21 9:53:14 0 [Note] InnoDB: 10.3.34 started; log sequence number 230364887; transaction id 89889 2022-04-21 9:53:14 0 [Note] Plugin 'FEEDBACK' is disabled. 2022-04-21 9:53:14 0 [Note] InnoDB: Loading buffer pool(s) from /home/mysql/ib_buffer_pool 2022-04-21 9:53:14 0 [Note] InnoDB: Buffer pool(s) load completed at 220421 9:53:14 2022-04-21 9:53:14 0 [ERROR] Can't create IP socket: Temporary failure in name resolution 2022-04-21 9:53:14 0 [ERROR] Aborting

How to assign a static IP with molecule-podman? Posted: 20 Apr 2022 11:58 PM PDT As the generated inventory look like a pair of instance name - ip (see above), I need to test recipe using the variable ansible_host with an IP value and not the instance name. So the generated inventory look like: [all] idm ansible_host=10.0.1.1 client1 ansible_host=10.0.1.2 [client] client1 ansible_host=10.0.1.2 Thus the molecule.yml contains: platforms: - name: idm image: quay.io/freeipa/freeipa-server:rocky-8-4.9.6 pre_build_image: true privileged: false network: testing hostname: idm.org.test command: ipa-server-install -U --realm=ORG.TEST --domain=org.test --ds-password=IsASecret --admin-password=IsASecret --hostname=idm.org.test - name: client1 image: quay.io/rockylinux/rockylinux pre_build_image: true privileged: false network: testing hostname: client1.org.test groups: - all - client Following this configuration I am able to put into the same network these 2 instances but I can not assign a static IP to them. Moreover here, ansible_host take the instance name as value (idm, client1). Note: as it is wrote in title I use molecule-podman to create instances and test Thanks for your help Best regards

PMTUD/ICMP black hole problems across a VXLAN tunnel Posted: 20 Apr 2022 11:24 PM PDT I'm running a Proxmox PVE host and am trying to use VXLAN to connect the machines running on it to various networks in our Lab. However, I'm running into weird MTU-related problems that I don't understand. First my setup. The basic layout is that virtual machines on the PVE host connect via a bridge to a VXLAN tunnel. On the other side of the tunnel I have a physical machine in the lab that acts as an VXLAN endpoint (EP). It connects to VTEP via bridge to one of it's ethernet ports, which in turns connects to the switch that holds the network I'm trying to put my VM into. On the PVE Host (one VM and one VXLAN as example): ___________ __________ __________ ___________ | VM eth0 | | Bridge | | VXLAN | | Host eno1 | | 192.168.. |___| ---- |___| VNI 1 |___| 10... |___ to LabNet | MTU 1500 | | MTU 1550 | | MTU 1550 | | MTU 1600 | |___________| |__________| |__________| |___________| In the lab (the endpoint with one tunnel + one lab device as example): ___________ __________ __________ __________ ___________ | LabDevice | | EP eth1 | | Bridge | | VXLAN | | EP eth0 | | 192.168.. |___ lab switch etc ___| ---- |___| ---- |___| VNI 1 |___| 10... |___ to PVE Host | MTU 1500 | | MTU 1500 | | MTU 1550 | | MTU 1550 | | MTU 1600 | |___________| |__________| |__________| |__________| |___________| Now, I get that PMTUD will not really work here because - being L2 - most of those devices can't report back, which is why I increased MTU for those devices that have to deal with the VXLAN overhead (that it's 1600 and not 1550 is unrelated, I just want to describe the as-is state exactly). However, I'm still running into MTU mismatch/ICMP Black Hole issues: Problem 1) Something in the chain claims to only support an MTU of 1450. If I try to connect from VM to LabDevice via SSH the connection hangs and then times out. If I test MTUs via ping -M do -s 1450 something somewhere answers with the usual fragmentation required... message, the max MTU of 1450 is stored and subsequent SSH connection attempts work (until the stored MTU1450-entry times out). The PVE host does have devices with a MTU set to 1450, but none of them are connected to the VM. Problem 2) PMTUD does not work even for devices not involved with the tunnel. If I lower the MTU of the VM eth0 and ping -s... it from the LabDevice with something too large for the VM but OK for everything else I get zero response even though the VM should from my understanding be able to answer with ICMP fragmentation required... messages. Semi-related: Is there anything I can do on the PVE host and the endpoint device to allow devices connected to the endpoint to discover a reduced MTU? Because there are some labs I might not be able to send Jumbo Frames to, and I'd prefer not to have to set a lower MTU on every single device in those labs. Edit: Maybe also relevant: I'm currently not running multicast, but have set up the remote IPs via bridge fdb .... Also on the VM host, the VMs aren't connected directly to the bridge but via some veth magic.

Samba server not releasing record locks on network disconnection Posted: 20 Apr 2022 11:22 PM PDT I was experimenting with a network file sharing scenario over SMB/samba. Record locks taken on a remote file remains valid, even after 1 hour of network disconnection. The following test case describes the set of activities done in chronological order: -> A process (P1) on a windows client (C1) and another process (P2) on a Linux client (C2) are connected to a common Linux server and accessing the same remote file. -> Both P1 and P2 opens the remote file and gets a handle each. -> P1 takes exclusive lock on offset 0. -> P2 tries to take exclusive lock on offset 0 in a loop but does not get since P1 holds an exclusive lock on the same offset. -> Now, P1 is disconnected from remote file (C1 is disconnected from server). Result: P2 does not get lock, returns 'EACCES' instantaneously, tried for around an hour. The results were surprising, since in a Wi-Fi environment, where systems keep coming in and out, it can potentially stall the system. OS specs of C1 - Windows 10 Enterprise (version: 20H2, build: 19042.1237) OS specs of C2 - Ubuntu 20.04.3 LTS (GNU/Linux 5.13.0-1021-azure x86_64) OS specs of Linux Server - Ubuntu 20.04.1 LTS (GNU/Linux 5.13.0-37-generic x86_64) Samba version on C2 - 4.13.17-Ubuntu Command used - smbststus Samba version on Linux server - 4.13.17-Ubuntu Command used - smbstatus SMB version on C1 - SMBv2/v3 Command used - sc.exe qc lanmanworkstation Protocol version - 3.1.1 (same on both connections) Command used - smbstatus Is it possible to have a practical timeout on the server such that other clients will not have to wait for long to get exclusive locks? Any inputs would help. These are the contents of smb config file in the Linux Server (name of share used - sambashare): [global] workgroup = WORKGROUP server string = %h server (Samba, Ubuntu) log file = /var/log/samba/log.%m max log size = 1000 logging = file panic action = /usr/share/samba/panic-action %d server role = standalone server obey pam restrictions = yes unix password sync = yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . pam password change = yes map to guest = bad user usershare allow guests = yes [printers] comment = All Printers browseable = no path = /var/spool/samba printable = yes create mask = 0700 [print$] comment = Printer Drivers path = /var/lib/samba/printers [sambashare] comment = Samba on Ubuntu path = /home/ubuntu/smb read only = no

How can I set the 'The other domain supports Kerberos AES Encryption' setting programmatically? Posted: 21 Apr 2022 01:02 AM PDT In the GUI (Active Directory Domains and Trusts MMC Snap-in (domain.msc)), you can set the "The other domain supports Kerberos AES Encryption" setting for a trust relationship: I am looking for a way to set this setting programmatically. I already reviewed the Install-ADDSDomain PowerShell cmdlet and also the netdom TRUST tool, but both do not seem to include an option to set the Kerberos AES encryption setting. Can someone tell me, how I can set this setting programmatically?

how to stop that ip requests and how to find that files who start the progress Posted: 21 Apr 2022 01:25 AM PDT i have that problem, that if i take a view over iftop -i eth0 -o 10s -p -P command i get a ton of list information 192.168.8.119:ssh => 192.168.8.98:62424 5.12Kb 5.60Kb 8.94Kb <= 320b 320b 453b 224.0.0.251:mdns => 192.168.8.98:mdns 0b 0b 0b <= 0b 285b 641b 192.168.8.119:smtp => 87.246.7.246:53274 160b 32b 8b <= 240b 48b 12b 192.168.8.119:smtp => 5.34.207.59:1832 0b 32b 8b <= 0b 48b 12b 192.168.8.119:smtp => 5.34.207.107:34708 0b 32b 8b <= 0b 48b 12b 192.168.8.119:smtp => 5.34.207.107:58290 0b 32b 8b <= 0b 48b 12b 192.168.8.119:smtp => 5.34.207.59:50034 0b 0b 16b <= 0b 0b 24b 192.168.8.119:45822 => 192.168.8.118:microsoft-ds 0b 0b 22b <= 0b 0b 12b 192.168.8.119:45824 => 192.168.8.118:microsoft-ds 0b 0b 22b <= 0b 0b 12b 192.168.8.119:45826 => 192.168.8.118:microsoft-ds 0b 0b 22b <= 0b 0b 12b 192.168.8.119:45828 => 192.168.8.118:microsoft-ds 0b 0b 22b <= 0b 0b 12b 192.168.8.119:45830 => 192.168.8.118:microsoft-ds 0b 0b 22b <= 0b 0b 12b ... .. . as example i blocked a couple of ip addresses but it ruin my day if i see allmost that full screen ufw deny from 5.34.207.107 to any ufw deny out from any to 5.34.207.107 how can i find and stop finaly that process which makes that calls for 5.34.207.107,...? Its an ubuntu 20.x system.

Jenkins Pipeline: Build docker within docker container Posted: 21 Apr 2022 12:06 AM PDT I'm trying to do the following Checkout the code Do some prechecks using some other docker images (don't want to install these on Jenkins node) Build jar using docker image maven:3.6-jdk-8 Then run Dockerfile to build app image Push the image to repository Now, I don't want to install anything apart from Docker on Jenkins node. I want to run the full pipeline in Docker container to achieve this. What I'm struggling is how to build the 4th step from within the container. I wrote the Jenkinsfile as below pipeline { agent none stages { stage('Maven build') { agent { docker { image 'maven:3.6-jdk-8' args '-u root:root' } } steps { checkout( [ $class: 'GitSCM', branches: [ [name: '*/master'] ], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [ [ credentialsId: '<cred-id>', url: '<github-url>'] ] ]) sh ''' set -eux pipefail mvn -e clean install ''' } } stage('Build docker image') { // Which docker image to use? } } } But I'm not sure how to build a docker image within container. The search didn't help that much. I tried using the Jenkins node for the docker image building but it seems I cannot mix and match. I totally understand this is quite an open question but I think it would be helpful to know the straightforward answer(s).

Windows Firewall causes TCP inbound connection time-out instead of connection refused when no server is connecting clients Posted: 21 Apr 2022 01:04 AM PDT So we noticed a different behavior from W7 systems with no firewall/av to W10 systems with firewall/av that causes our thir-party clients to raise a false positive error that is new to these W10 firewalled systems. The problem can summarize as we get a 'TimeOut' (Socket ErrorCode 10060) after more than 20s instead of getting almost instantly before a 'ConnectionRefused' (Socket ErrorCode 10061). Please note that the issue only manifests when our tcp socket server does not connect to clients yet on that port (process is not launched yet), it works fine when it is connecting so the port is not blocked by our firewall. When disabling completely our firewall this issue disappears as Windows now again actively refuses connections, making our third party system to behave as expected again. How to keep my FW on and it setup such as I get the old behavior on our new W10 firewalled server side machine (i.e. simply raise a connection refused (10061) error instead of a timeout (10060) error) ?

How to install Mysql 5.6 on RHEL8 from Mysql repos? Posted: 21 Apr 2022 12:16 AM PDT I'm new to dnf, so this is probably obvious to someone. I did check versionlock and checked for any exclude lines in any of the /etc/yum.repos.d files. But, when I have any other repos enabled, I cannot find mysql server to install. I can try to install it with all other repos disabled, but then it cannot find all the dependencies. [root@ip-10-9-10-242 yum.repos.d]# dnf clean all 42 files removed [root@ip-10-9-10-242 yum.repos.d]# dnf --disablerepo "*" --enablerepo "mysql56-community" list available Last metadata expiration check: 0:07:40 ago on Tue 30 Jul 2019 12:38:45 UTC. Available Packages mysql-community-bench.x86_64 5.6.45-2.el7 mysql56-community ... mysql-community-server.x86_64 5.6.45-2.el7 mysql56-community mysql-community-test.x86_64 5.6.45-2.el7 mysql56-community [root@ip-10-9-10-242 yum.repos.d]# dnf --enablerepo "mysql56-community" search mysql-community-server.x86_64 Last metadata expiration check: 0:07:59 ago on Tue 30 Jul 2019 12:38:48 UTC. No matches found. [root@ip-10-9-10-242 yum.repos.d]# dnf search mysql-community Last metadata expiration check: 0:10:57 ago on Tue 30 Jul 2019 12:38:48 UTC. ============================================================================================== Name Matched: mysql-community ============================================================================================== mysql-community-bench.x86_64 : MySQL benchmark suite mysql-community-release.noarch : MySQL repository configuration for yum mysql-community-release.noarch : MySQL repository configuration for yum mysql-community-embedded.i686 : MySQL embedded library mysql-community-embedded.x86_64 : MySQL embedded library mysql-community-embedded-devel.i686 : Development header files and libraries for MySQL as an embeddable library mysql-community-embedded-devel.x86_64 : Development header files and libraries for MySQL as an embeddable library So, you can see some of the stuff in mysql56 repo is found (like bench) but the server isn't. I'd also previously done : yum-config-manager --disable mysql80-community yum-config-manager --enable mysql56-community And can see : [root@ip-10-9-10-242 yum.repos.d]# dnf repolist Last metadata expiration check: 0:00:04 ago on Tue 30 Jul 2019 13:03:47 UTC. repo id repo name status mysql-connectors-community MySQL Connectors Community 118 mysql-tools-community MySQL Tools Community 95 mysql56-community MySQL 5.6 Community Server 169 rhui-client-config-server-8 Red Hat Update Infrastructure 3 Client C 3 rhui-rhel-8-appstream-rhui-rpms Red Hat Enterprise Linux 8 for x86_64 - 5,472 rhui-rhel-8-baseos-rhui-rpms Red Hat Enterprise Linux 8 for x86_64 - 2,029 For anyone still confused, what can't be found, can't be installed. [root@ip-10-9-10-242 ~]# dnf install mysql-community-server Last metadata expiration check: 0:00:12 ago on Thu 01 Aug 2019 09:14:02 UTC. No match for argument: mysql-community-server Error: Unable to find a match OK, so a bit of "-v" action and it says the packages are excluded. BUT I can disable all excludes and it still says they're excluded. [root@ip-10-9-10-242 dnf]# dnf repoquery --repo mysql56-community --available mysql-community-server-0:5.6.45-2.el7.x86_64 Last metadata expiration check: 0:13:17 ago on Thu 01 Aug 2019 17:12:25 UTC. mysql-community-server-0:5.6.45-2.el7.x86_64 [root@ip-10-9-10-242 dnf]# dnf --enablerepo=mysql56-community --disableexcludepkgs all --disableexcludes all install mysql-community-bench Last metadata expiration check: 0:14:46 ago on Thu 01 Aug 2019 17:13:30 UTC. Error: Problem: package mysql-community-bench-5.6.45-2.el7.x86_64 requires mysql-community-server(x86-64) >= 5.6.10, but none of the providers can be installed - cannot install the best candidate for the job - package mysql-community-server-5.6.15-4.el7.x86_64 is excluded - package mysql-community-server-5.6.16-1.el7.x86_64 is excluded ..... - package mysql-community-server-5.6.44-2.el7.x86_64 is excluded - package mysql-community-server-5.6.45-2.el7.x86_64 is excluded [root@ip-10-9-10-242 dnf]# dnf --disablerepo "*" --enablerepo=mysql56-community --disableexcludepkgs all --disableexcludes all install mysql-community-bench Last metadata expiration check: 0:18:12 ago on Thu 01 Aug 2019 17:12:25 UTC. Error: Problem: cannot install the best candidate for the job - nothing provides /usr/bin/perl needed by mysql-community-bench-5.6.45-2.el7.x86_64 - nothing provides perl(Getopt::Long) needed by mysql-community-bench-5.6.45-2.el7.x86_64 - nothing provides perl(Data::Dumper) needed by mysql-community-bench-5.6.45-2.el7.x86_64 - nothing provides perl(POSIX) needed by mysql-community-bench-5.6.45-2.el7.x86_64 - nothing provides perl(Cwd) needed by mysql-community-bench-5.6.45-2.el7.x86_64 - nothing provides perl(DBI) needed by mysql-community-bench-5.6.45-2.el7.x86_64 - nothing provides perl(Benchmark) needed by mysql-community-bench-5.6.45-2.el7.x86_64 - nothing provides perl(sigtrap) needed by mysql-community-bench-5.6.45-2.el7.x86_64 (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

How to monitor nginx running on a docker container with ngxtop running on my mac host? Posted: 21 Apr 2022 01:04 AM PDT The official Nginx Docker image does a redirection of access.log to /dev/stdout, so that one can access the log with docker log from outside docker i.e. on the host. This is an issue because then from within the docker container I can't access access.log. I finally resorted to install nginx on my mac and perform the following command docker logs -f competent_edison &>> ~/Dev/monitoring/access.log While the redirection works fine and the access.log on my mac, mirror the output of the container in realtime, ngxtop output nothing when i pass that file as parameter: ngnix -l ~/Dev/monitoring/access.log I wonder if there is a way for ngxtop to be installed on an host, to monitor an nginx running in a container. Please any indication would be helpful as i spend 2 days around that and can't figure out how to deal with it.

Tap interface using netplan? Posted: 20 Apr 2022 11:00 PM PDT How does one set up tun and tap interfaces on systems that use netplan? Normally you'd use pre-up in /etc/network/interfaces to call ip tuntap for creating the interface, but I haven't found anything in the netplan docs to do this.

MariaDB Galera SST Fails Posted: 21 Apr 2022 12:06 AM PDT I am running a 3 node MariaDB 10 Galera Cluster on CentOS 6. I have use this set-up before without issue else where but now when adding a 3rd node the SST fails with this error in the logs: 150212 18:03:02 [Warning] WSREP: 1.0 (server1.example.com): State transfer to 0.0 (server3.example.com) failed: -22 (Invalid argument) 150212 18:03:02 [ERROR] WSREP: gcs/src/gcs_group.c:gcs_group_handle_join_msg():723: Will never receive state. Need to abort. Checking the logs of the donor node shows: 150212 18:03:01 [ERROR] WSREP: Failed to read from: wsrep_sst_xtrabackup-v2 --role 'donor' --address '192.168.0.3:4444/xtrabackup_sst' --auth 'wsrep_sst:wsrep_pass' --socket '/var/lib/mysql/mysql.sock' --datadir '/var/lib/mysql/' --defaults-file '/etc/my.cnf' --binlog 'mysql-bin' --gtid '8561e69a-9beb-11e4-825a-f2380deeda3b:18365' 150212 18:03:01 [ERROR] WSREP: Process completed with error: wsrep_sst_xtrabackup-v2 --role 'donor' --address '192.168.0.3:4444/xtrabackup_sst' --auth 'wsrep_sst:wsrep_pass' --socket '/var/lib/mysql/mysql.sock' --datadir '/var/lib/mysql/' --defaults-file '/etc/my.cnf' --binlog 'mysql-bin' --gtid '8561e69a-9beb-11e4-825a-f2380deeda3b:18365': 22 (Invalid argument) 150212 18:03:01 [ERROR] WSREP: Command did not run: wsrep_sst_xtrabackup-v2 --role 'donor' --address '192.168.0.3:4444/xtrabackup_sst' --auth 'wsrep_sst:wsrep_pass' --socket '/var/lib/mysql/mysql.sock' --datadir '/var/lib/mysql/' --defaults-file '/etc/my.cnf' --binlog 'mysql-bin' --gtid '8561e69a-9beb-11e4-825a-f2380deeda3b:18365' My config looks like so: [server] wsrep_provider="/usr/lib64/galera/libgalera_smm.so" wsrep_cluster_address="gcomm://192.168.0.1,192.168.0.2,192.168.0.3" wsrep_cluster_name='MY_CLUSTER' wsrep_sst_auth=wsrep_sst:wsrep_pass wsrep_sst_method=xtrabackup-v2 wsrep_sst_receive_address=192.168.0.3 default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 innodb_doublewrite=1 innodb_file_per_table=1 query_cache_size=0 binlog_format=ROW log-bin=mysql-bin [mysqld] datadir=/var/lib/mysql tmpdir=/tmp user=mysql bind-address=0.0.0.0 Nodes only differ in their wsrep_sst_receive_address value.

Fatal error: Incompatible file format: The encoded file has format major ID 1, whereas the Loader expects 4 in ... on line 0 Posted: 20 Apr 2022 11:00 PM PDT I am using Ubuntu 10.04 and for some time I had to keep a downgraded PHP 5.2 package because I need to run Zend encrypted scripts. Recently I noticed that Zend released beta version of their loader (http://forums.zend.com/viewtopic.php?f=57&t=1365&start=80#p22073) so I updated to the native PHP 5.3 package, downloaded the .so file, added this to php.ini ;zend_extension=/etc/php5/ZendOptimizer.so zend_extension=/etc/php5/ZendGuardLoader.so zend_loader.enable=1 zend_loader.disable_licensing=0 zend_loader.obfuscation_level_support=3 and restarted the server. Now I am getting this error: Fatal error: Incompatible file format: The encoded file has format major ID 1, whereas the Loader expects 4 in ... on line 0 Do you by chance know an easy fix for this? Or should I downgrade back and wait till when they release something more stable?

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