Discuss December 2020

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157 participants
96 discussions

06 Dec '20

Just installed the above USB webcam but it is not recognized by dmesg | grep usb, nor does Zoom recognize it. I was under the understanding it should not require a driver, or? I am running CentOS 7. Thanks.

6 23

Selecting a Desktop
by david 05 Dec '20

05 Dec '20

Folks Some of my users like GNOME, some like XFCE, and there's even a MATE lover out there. And some would like to change desktops from time to time. Is there some way to allow a user to choose her own desktop? I can envision at least two ways this might be done: 1) Present a user with a command-line login, and have a program (let's call it 'gui') so the user could type in "gui g" for gnome, "gui m' for mate, and so on. 2) Present a uses with a gui login-in screen, which also includes a desktop selector. Of course, it would only offer those desktops which are installed. Is there such? Gui-Confused David

2 1

EFI System Partition on RAID 1 array
by Nicolas Kovacs 05 Dec '20

05 Dec '20

Hi, I'm currently writing a little documentation on how to install CentOS 7 on manually partitioned disks, e. g. boot in Rescue Mode first, partition using fdisk or gdisk, reboot, start the installer and use the installer to format these partitions. I have a total of 9 (3 x 3) situations: * single disk (BIOS+MBR, BIOS+GPT, UEFI) * RAID 1 on 2 disks (BIOS+MBR, BIOS+GPT, UEFI) * RAID 6 on 4 disks (BIOS+ BR, BIOS+GPT, UEFI) Everything works fine so far and I've completed seven out of nine of these setups. But right now I'm stuck with a problem on how to manually setup RAID 1 with UEFI. Here's what I do. Fire up gdisk on /dev/sda. Create 4 RAID partitions (FD00): * 200 MB for /dev/md/EFI * 500 MB for /dev/md/boot * 4 GB for /dev/md/swap * 55 MB for /dev/md/root Create the RAID arrays: # mdadm --create /dev/md/EFI --level=1 --raid-devices=2 \ --metadata=1.2 /dev/sda1 /dev/sdb1 mdadm: array /dev/md/boot started # mdadm --create /dev/md/boot --level=1 --raid-devices=2 \ --metadata=1.2 /dev/sda2 /dev/sdb2 mdadm: array /dev/md/boot started # mdadm --create /dev/md/swap --level=1 --raid-devices=2 \ --metadata=1.2 /dev/sda3 /dev/sdb3 mdadm: array /dev/md/swap started # mdadm --create /dev/md/root --level=1 --raid-devices=2 \ --metadata=1.2 /dev/sda4 /dev/sdb4 mdadm: array /dev/md/root started And then I reboot, fire up the installer and assign these RAID arrays respectively to the EFI system partition as well as /boot, swap and /. Unfortunately I won't even reach the GRUB menu on boot. Only thing I get after the initial reboot is the EFI shell. Now I've tried this again, this time partitioning *and* formating using Anaconda. * one mountpoint for /boot/efi (RAID 1) * one mountpoint for /boot (RAID 1) * one mountpoint for swap (RAID 1) * one mountpoint for / (RAID 1) After the initial reboot, everything works fine. EFI on a RAID 1 array apparently works. So what am I missing and/or doing wrong in my manual setup? Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Blog : https://blog.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12

1 1

CentOS 7 disk identifier
by H 04 Dec '20

04 Dec '20

Are disk identifiers important in CentOS? I have two disks that used to be in a Intel fake RAID1 configuration and I now see have identical disk identifiers of 00000000-0000-0000-0000000000. I now want to use only one of them and later use mdraid for a software RAID1 configuration. Googling suggests that: (1) disk identifiers are /not/ important and (2) they are using the format 0x12345678. However fdisk -l displays the disk identifiers of my disks in the long UUID format. Further, another disk in the system does use a long UUID. Last, googling suggests there is confusion between disk identifiers and partition UUIDs. I am specifically asking about the former.

1 0

Table *** is marked as crashed and should be repaired
by Александр Кириллов 03 Dec '20

03 Dec '20

Hi, I've started migrating my sites to mariadb which is supposed to be a drop-in replacement of mysql. Both run on the same C6 box. DB folders were moved to a new location after both DB servers were stopped and properly upgraded. There were no reboots or power failures. Nevertheless I see these error messages in the logs: # cat /var/opt/rh/rh-mariadb102/log/mariadb/mariadb.log ... 2020-11-29 16:38:23 139882501732320 [Note] /opt/rh/rh-mariadb102/root/usr/libexec/mysqld: ready for connections. Version: '10.2.22-MariaDB' socket: '/var/opt/rh/rh-mariadb102/lib/mysql/mysql.sock' port: 3307 MariaDB Server 2020-11-29 16:38:23 139882394105600 [Warning] Access denied for user 'UNKNOWN_MYSQL_USER'@'localhost' (using password: NO) 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_wc_customer_lookup' is marked as crashed and should be repaired 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table 'wp_wc_customer_lookup' is marked as crashed and should be repaired 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_wc_customer_lookup' is marked as crashed and should be repaired 2020-11-29 16:39:37 139882394105600 [ERROR] mysqld: Table 'wp_wc_customer_lookup' is marked as crashed and should be repaired 2020-11-29 16:39:37 139882394105600 [Warning] Checking table: './wordpress@002dstorefront/wp_wc_customer_lookup' ... 2020-11-29 17:16:17 140059421116384 [Note] /opt/rh/rh-mariadb102/root/usr/libexec/mysqld: ready for connections. Version: '10.2.22-MariaDB' socket: '/var/opt/rh/rh-mariadb102/lib/mysql/mysql.sock' port: 3307 MariaDB Server 2020-11-29 17:16:18 140059356550912 [Warning] Access denied for user 'UNKNOWN_MYSQL_USER'@'localhost' (using password: NO) 2020-11-29 17:20:01 140059356550912 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_options' is marked as crashed and should be repaired 2020-11-29 17:20:01 140059356550912 [ERROR] mysqld: Table 'wp_options' is marked as crashed and should be repaired 2020-11-29 17:20:01 140059356550912 [Warning] Checking table: './wordpress@002dstorefront/wp_options' 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_posts' is marked as crashed and should be repaired 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table 'wp_posts' is marked as crashed and should be repaired 2020-11-29 17:20:02 140059356550912 [Warning] Checking table: './wordpress@002dstorefront/wp_posts' 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_actionscheduler_claims' is marked as crashed and should be repaired 2020-11-29 17:20:02 140059356550912 [ERROR] mysqld: Table 'wp_actionscheduler_claims' is marked as crashed and should be repaired 2020-11-29 17:20:02 140059356550912 [Warning] Checking table: './wordpress@002dstorefront/wp_actionscheduler_claims' 2020-11-29 17:22:28 140059356550912 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_usermeta' is marked as crashed and should be repaired 2020-11-29 17:22:28 140059356550912 [ERROR] mysqld: Table 'wp_usermeta' is marked as crashed and should be repaired 2020-11-29 17:22:28 140059356550912 [Warning] Checking table: './wordpress@002dstorefront/wp_usermeta' 2020-11-29 17:22:31 140059356550912 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_woocommerce_sessions' is marked as crashed and should be repaired 2020-11-29 17:22:31 140059356550912 [ERROR] mysqld: Table 'wp_woocommerce_sessions' is marked as crashed and should be repaired 2020-11-29 17:22:31 140059356247808 [ERROR] mysqld: Table './wordpress@002dstorefront/wp_woocommerce_sessions' is marked as crashed and should be repaired 2020-11-29 17:22:31 140059356247808 [ERROR] mysqld: Table 'wp_woocommerce_sessions' is marked as crashed and should be repaired 2020-11-29 17:22:31 140059356550912 [Warning] Checking table: './wordpress@002dstorefront/wp_woocommerce_sessions' ... Note that after the crashed table was repaired mariadb reported multiple crashed tables in the same DB after restart. Any pointers? Never had such problems with mysqld. Is mariadb reliable and stable at all? # cat /etc/centos-release CentOS release 6.10 (Final) # rpm -qa '*maria*' rh-mariadb102-mariadb-server-utils-10.2.22-1.el6.x86_64 rh-mariadb102-mariadb-common-10.2.22-1.el6.x86_64 rh-mariadb102-mariadb-10.2.22-1.el6.x86_64 rh-mariadb102-mariadb-server-10.2.22-1.el6.x86_64 rh-mariadb102-mariadb-config-10.2.22-1.el6.x86_64 rh-mariadb102-mariadb-errmsg-10.2.22-1.el6.x86_64 rh-mariadb102-runtime-3.0-5.el6.x86_64 TIA, AK

1 1

Thunderbird 78
by Gerhard Schneider 03 Dec '20

03 Dec '20

The upstream provider decided to remove OpenGPG support in its thunderbird-78 packages, see https://bugzilla.redhat.com/show_bug.cgi?id=1886962 https://bugzilla.redhat.com/show_bug.cgi?id=1886958 https://bugzilla.redhat.com/show_bug.cgi?id=1837512 recommending to either use Mozilla binaries, use Flatpak or switch to Evolution Is there any plan to provide thunderbird-78-full packages in e.g. EPEL, ELRepo or somewhere else (like firefox-esr in Ubuntu) or should we use Mozilla binaries? Thank you in advance! Gerhard Schneider -- Gerhard Schneider Institute of Lightweight Design and e-Mail: gs(a)ilsb.tuwien.ac.at Structural Biomechanics (E317) Tel.: +43 1 58801 31716 TU Wien / Vienna / Austria Fax: +43 1 58801 31799 A-1060 Wien, Gumpendorfer Straße 7 http://www.ilsb.tuwien.ac.at/~gs/

2 1

firewall-cmd - bug or bad design
by Jon LaBadie 03 Dec '20

03 Dec '20

In my firewall I use an ipset as a geographical blacklist. A single addresses can be entered into the blacklist using CIDR notation or not, i.e. 111.222.111.222/32 OR 111.222.111.222 while a block of IP addresses can be entered using CIDR notation: 111.222.111.0/24 Both the ipset and firewall-cmd commands have ways to ask if an address has already been entered into the blacklist. The basic syntax is ipset test <blacklist> <ip_addr> firewall-cmd --ipset=<blacklist> --query-entry=<ip_addr> With ipset I can test a single address using CIDR or not regardless of how it was entered. If the entry was a block of addresses, any address within the block is reported as "in the ipset". firewall-cmd responds differently. If I entered "111.222.111.222/32" (i.e. using CIDR) into the list, firewall-cmd reports the address as "NOT entered" if I query the simple form "111.222.111.222" even though they are the same single address. Conversely, if the original entry was simple, the CIDR form is reported as "NOT entered". With block entries like 111.222.111.0/24, any address within the block is reported as "NOT entered"! Only the actual string entered, 111.222.111.0/24, is considered "entered". I use these types of queries to decided whether an ip address is already being blocked. Clearly relying the firewall-cmd query would lead to unnecessary entries. What do you think, Should I consider this simply a poor design decision or a reportable "bug"? -- Jon H. LaBadie jcu(a)labadie.us

1 0

Reminder: CentOS 6 EOL on 30 November 2020
by Johnny Hughes 02 Dec '20

02 Dec '20

All, This is a friendly reminder. CentOS 6.10 will EOL at the end of November 2020. During the first week in December 2020, the 6.10 directory will move to vault.centos.org Packages will still be available at: http://vault.centos.org/centos/6.10/ However, once moved, there will be no more updates pushed to vault.centos.org. Therefore, security issues will no longer be fixed, etc. You should take the rest of the month to either move to a newer versoin of CentOS Linux ... or to procure Extended el6 support from Red Hat (EUS RHEL 6). Thanks, Johnny Hughes

3 2

[rdo][centos8][repos] CentOS8 RDO-USSURI repo missing openvswitch2.13
by Ruslanas Gžibovskis 02 Dec '20

02 Dec '20

Hi all, I have an issue, in CentOS8 repos for RDO. It is refering to openvswitch2.13 name, but in the repos I can see openvswitch packages with version in version field, looks like in dependency field it is missing dash (-) or smth... here is a paste of repos and error message [0]. Or any other way how this could be fixed? thanks. and packages I can see [1] here. [0] http://paste.openstack.org/show/xEalilL1rRJSDTzNCGt1/ [1] http://paste.openstack.org/show/VLWrNFpRLatwq5qXP2kD/ -- Ruslanas Gžibovskis +370 6030 7030

1 0

Firefox, C-7, and... reboot?
by mark 02 Dec '20

02 Dec '20

Last night, for the second or third time since I upgraded from C6 to c7 this summer, I did something on firefox - I think it was reload a page, and my system rebooted. Yes, I have a ton of tabs open. I see nothing suspicious in /var/log/messages, or in /var/log/dmesg.old. I saw a mention of boltd? I think, but nothing more. Has anyone else had this problem? mark

1 0

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