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question about directory size in linux..
by Jason Welsh 23 Feb '17

23 Feb '17

on a CentOS release 6.8 (Final) I was looking around and noticed the following in a directory. [jason@server /app-vol/applications/]$ls -ld temp drwxr-xr-x 4 jason users 2899968 Feb 18 06:31 temp/ [jason@server /app-vol/applications/]$ How does the directory *itself* have a size of 2.8 megs? yes the contents in that temp directory add up to 2.8 megs, but.. umm. huh? when I run a stat on the temp directory, i get File: `temp' Size: 2899968 Blocks: 5672 IO Block: 4096 directory Device: fd02h/64770d Inode: 1836137 Links: 4 Access: (0755/drwxr-xr-x) Uid: ( 1022/ jason) Gid: ( 501/ users) Access: 2017-02-22 06:31:51.414190071 -0500 Modify: 2017-02-18 06:31:56.135448424 -0500 Change: 2017-02-18 06:31:56.135448424 -0500 on other "normal" directories, I see something like Size: 4096 Blocks: 8 IO Block: 4096 directory Jason

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Re: [CentOS] Network conections problems
by Istimsak Abdulbasir 23 Feb '17

23 Feb '17

On Feb 20, 2017 2:42 PM, "Rommel Rodriguez Toirac" <rommelrt(a)nauta.cu> wrote: Hi; I have a CentOS 6.8 x86_64 server where just run Oracle 11g 64 bit data base server. Is happen that sometimes it loose all connections (no ping, I can not access via ssh, no TNSping of Oracle server have success). When this happend I make ping from this server to some IP address of my network and then everything work fine again. I check logs looking for some mistake or problem in the network device, but I do not find anything or maybe I not looking where must be. I check that from a workstation (Windows XP or Windows 7 or Windows 10) when I make ping to the server, after ~ 8 seconds in get answer and always the first one is loose. If you try again ping, everything work fine (no answers are loose) C:\Users\administrator>ping pgtm.gtm.gob.cu Haciendo ping a pgtm.gtm.gob.cu [192.168.41.4] con 32 bytes de datos: Tiempo de espera agotado para esta solicitud. Respuesta desde 192.168.41.4: bytes=32 tiempo<1m TTL=64 Respuesta desde 192.168.41.4: bytes=32 tiempo<1m TTL=64 Respuesta desde 192.168.41.4: bytes=32 tiempo<1m TTL=64 Estadísticas de ping para 192.168.41.4: Paquetes: enviados = 4, recibidos = 3, perdidos = 1 (25% perdidos), Tiempos aproximados de ida y vuelta en milisegundos: Mínimo = 0ms, Máximo = 0ms, Media = 0ms This are some of the configs related with networks [root@pgtm ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 TYPE=Ethernet UUID=11dcddd4-6530-457a-8d3e-01a8339fb113 ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none HWADDR=6C:92:BF:26:C7:02 IPADDR=192.168.41.4 PREFIX=24 GATEWAY=192.168.41.1 DNS1=192.168.41.17 DOMAIN=gtm.gob.cu DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME="System eth0" L I noticed from your ipcfg-eth0 file, the address 192.168.41.1 is assigned to eth0. When you typed the command "ifconfig", that same address was assigned to eth1. Try changing the name of this file to ipcfg-eth1 and restart networkmanager. As was stated earlier, check your gateway and see what other devices could be using that address. Put a block on that unknown MAC address if you can. cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.41.4 pgtm pgtm.gtm.gob.cu [root@pgtm ~]# cat /etc/resolv.conf # Generated by NetworkManager search gtm.gob.cu nameserver 192.168.41.17 [root@pgtm mail]# cat /etc/sysconfig/network NETWORKING=yes HOSTNAME=pgtm.gtm.gob.cu GATEWAY=192.168.41.1 Someone that happend something like this, or some place for where keep looking to try to fix this loose of conection? Thank and sorry for my horryble English. Rommel Rodriguez Toirac rommelrt(a)nauta.cu _______________________________________________ CentOS mailing list CentOS(a)centos.org https://lists.centos.org/mailman/listinfo/centos

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Re: [CentOS] how to resize a partition of a disk define as a physical volume
by Istimsak Abdulbasir 22 Feb '17

22 Feb '17

On Feb 22, 2017 7:45 AM, "Bernard Fay" <bernard.fay(a)gmail.com> wrote: Hello, I have a CentOS VM with only one disk on a Xenserver. The disk has 2 partitions: /dev/xvda1 -> /boot /dev/xvda2 -> a physical volume for LVM I added 5GB to this disk via Xencenter to extend /dev/xvda2. Usually I just have to do "pvresize /dev/xvda" to have the additional space added to the disk. But for some reason it does not work for this disk. [root ~]# pvresize /dev/xvda Failed to find physical volume "/dev/xvda". 0 physical volume(s) resized / 0 physical volume(s) not resized K Xvda does not seem to be read as an LVM volume. Xvda2 is handled by lvm so this can be resized. However xvda is just the harddrive itself. From what I have learned using lvm briefly, you can only resize lvm volumes or partitions created using lvm. [root ~]# pvresize /dev/xvda2 Physical volume "/dev/xvda2" changed 1 physical volume(s) resized / 0 physical volume(s) not resized Does someone have seen this problem before or could have an idea of the problem? Thanks, Bernard _______________________________________________ CentOS mailing list CentOS(a)centos.org https://lists.centos.org/mailman/listinfo/centos

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how to resize a partition of a disk define as a physical volume
by Bernard Fay 22 Feb '17

22 Feb '17

Hello, I have a CentOS VM with only one disk on a Xenserver. The disk has 2 partitions: /dev/xvda1 -> /boot /dev/xvda2 -> a physical volume for LVM I added 5GB to this disk via Xencenter to extend /dev/xvda2. Usually I just have to do "pvresize /dev/xvda" to have the additional space added to the disk. But for some reason it does not work for this disk. [root ~]# pvresize /dev/xvda Failed to find physical volume "/dev/xvda". 0 physical volume(s) resized / 0 physical volume(s) not resized [root ~]# pvresize /dev/xvda2 Physical volume "/dev/xvda2" changed 1 physical volume(s) resized / 0 physical volume(s) not resized Does someone have seen this problem before or could have an idea of the problem? Thanks, Bernard

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Centos7 Postfixadmin with SELInux
by Robert Moskowitz 22 Feb '17

22 Feb '17

Anyone here running Postfixadmin on Centos7 with SELinux? The config.inc.php script has lots of warning comments about what you will have to do to get functions to work with SELinux, but does not supply any policy rules. I am still configuring, and so far I have only done: chcon -R -t httpd_sys_content_rw_t /usr/share/postfixadmin/templates_c (thanks Daniel) I suspect here are more so it can do things like create directories and files in the mail store (e.g. /home/vmail/). Oh my current server is running without SELinux (shutter) and that is one of the many reasons I want to upgrade. Bob

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Problems with my simple write conf files method
by Robert Moskowitz 22 Feb '17

22 Feb '17

I have been creating conf files and similar with the following method that I picked up (I think from psotfix docs): cat <<EOF>>/etc/aliases || exit 1 root: youremail EOF See: http://medon.htt-consult.com/Centos7-armv7.html But with postfixadmin I stumbled onto a problem. The following: cat <<EOF>/usr/share/postfixadmin/config.local.php || exit 1 <?php $CONF['database_type'] = 'mysqli'; $CONF['database_user'] = 'postfix'; $CONF['database_password'] = 'xyz'; $CONF['database_name'] = 'postfix'; $CONF['configured'] = true; ?> EOF produces: cat <<EOF>/usr/share/postfixadmin/config.local.php || exit 1 <?php ['database_type'] = 'mysqli'; ['database_user'] = 'postfix'; ['database_password'] = 'xyz'; ['database_name'] = 'postfix'; ['configured'] = true; ?> That is the '$CONF' gets processed. What can I do to avoid this (and any other 'gotchas') or can someone provide an alternative? thanks

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CentOS-announce Digest, Vol 144, Issue 6
by centos-announce-request＠centos.org 22 Feb '17

22 Feb '17

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2017:0286 Moderate CentOS 6 openssl Security Update (Johnny Hughes) 2. CESA-2017:0286 Moderate CentOS 7 openssl Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 21 Feb 2017 11:44:42 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2017:0286 Moderate CentOS 6 openssl Security Update Message-ID: <20170221114442.GA16750(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2017:0286 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2017-0286.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 168bc525c268d07b3fae14e4ba66dd7c6d9561f7789700feba0eeaf6951ff4e8 openssl-1.0.1e-48.el6_8.4.i686.rpm 765eff4b25e944dbadcd3523f89adb1b29f76337ff395cd5431c934dafd0cede openssl-devel-1.0.1e-48.el6_8.4.i686.rpm e5c04361a9531c903afde3b8876fe0dfb12520d70e5446f515750e98735aba7d openssl-perl-1.0.1e-48.el6_8.4.i686.rpm 57edfc2de0dbf1bf058e65898d500a725bd9c31cea6244a7e93af01c7776077d openssl-static-1.0.1e-48.el6_8.4.i686.rpm x86_64: 168bc525c268d07b3fae14e4ba66dd7c6d9561f7789700feba0eeaf6951ff4e8 openssl-1.0.1e-48.el6_8.4.i686.rpm f0b991e41e0a9d5d20ff60d1a7b5833a6f1cde6ed59bfdfab9a275d6d338b28e openssl-1.0.1e-48.el6_8.4.x86_64.rpm 765eff4b25e944dbadcd3523f89adb1b29f76337ff395cd5431c934dafd0cede openssl-devel-1.0.1e-48.el6_8.4.i686.rpm 6ebd15c228500784541fd778413348129c61c2af6249fd7043ef13c10c93bd60 openssl-devel-1.0.1e-48.el6_8.4.x86_64.rpm d9a31c566a6df0c15671c32e96abd64d8f0f906dc05ae995a2c57a64b70fa341 openssl-perl-1.0.1e-48.el6_8.4.x86_64.rpm 502e6c723c15b0aaf13bdb7a0faf6b647fcf953318e1782b6df3a2b2de323ff3 openssl-static-1.0.1e-48.el6_8.4.x86_64.rpm Source: dca305112f97f7c9a4c084e33901ffcd745bf260b8e1466fd9307eb819d388a9 openssl-1.0.1e-48.el6_8.4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Tue, 21 Feb 2017 12:48:27 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2017:0286 Moderate CentOS 7 openssl Security Update Message-ID: <20170221124827.GA30499(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2017:0286 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2017-0286.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 642eb35daa25ae290bd3922e7876ac5d61744cb56c0d3f7877e76320b99a8f59 openssl-1.0.1e-60.el7_3.1.x86_64.rpm 36fa878db932143ea4c107acb2deb34f78a9e7cb9159384b767f0932a27662d6 openssl-devel-1.0.1e-60.el7_3.1.i686.rpm 6d5b7f68f5cc4446092ab2c3502df813b0145a4186e654f22d241ca9a88f79c3 openssl-devel-1.0.1e-60.el7_3.1.x86_64.rpm 75afa599c87b32683162c976a3f7245767b1612b6fc1c1f935c41bcaaab71b8d openssl-libs-1.0.1e-60.el7_3.1.i686.rpm d3354df1c13897870b20407aed7b3eb1ee581b0e1f4af4bcd920fa57914202ca openssl-libs-1.0.1e-60.el7_3.1.x86_64.rpm 89aef81712ce7a139e59aa0e594db2c3bb03ba9f6bc2e161debb43705dee67a7 openssl-perl-1.0.1e-60.el7_3.1.x86_64.rpm a1af544918add7dbc76be337f395a816e1f3b0d7bae42fb0a6c812f8636c6f1d openssl-static-1.0.1e-60.el7_3.1.i686.rpm 8f7129a44f28934985e1b00ccec2a0c80271018a038afab49e23e22576c7d47c openssl-static-1.0.1e-60.el7_3.1.x86_64.rpm Source: 976eaf61e1cbe2ac4bf32a440a5697dc19be59fd1b275bb314fda8888c3340a4 openssl-1.0.1e-60.el7_3.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 144, Issue 6 ***********************************************

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usermod under CentOS
by Beartooth 21 Feb '17

21 Feb '17

My wife's PC, running CentOS 6, suddenly quit connecting to the Net. Autodidact that I am, I fumbled with all the hard- and software I could find or dared try, but did no good. So we lugged it down to our favorite shop. While there, she bought a laptop, and asked them to install CentOS and copy all her files from the PC (including two books she's written and is trying to market). They called to ask whether I wanted to specify a username & password, or just use their default dummies. I chose the dummies -- and realized in the night that I've never changed a username before. I think, repeat think, I could hack it with mv and chown, but I had enough sense to try a few manuals and duckduckgo searches. Those eventually led me to usermod, and I took a look at 'man usermod'. It seems to be fairly powerful -- and therefore dangerous as well as apposite. So I ask here: are there caveats, gotchas, and/or other entities of their ilk that I need be wary of? -- Beartooth Staffwright, Not Quite Clueless Power User Remember I know little (precious little!) of where up is.

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Centos7: Intel nuc/Linksys usb-ethernet
by johan.vermeulen7＠telenet.be 21 Feb '17

21 Feb '17

Hello All, I'm installing some DIY routers, composed of Intel nuc's ,Linksys usb-ethernet adapters and Centos7 On most machines I just plug in the usb device, install Centos7 and everything works. But on this one machine the network interface doesn't work. After installing ip addr shows: [root@clgmol ~]# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether f4:4d:30:64:21:bb brd ff:ff:ff:ff:ff:ff inet 192.168.80.189/25 brd 192.168.80.255 scope global dynamic enp3s0 valid_lft 431sec preferred_lft 431sec inet6 fe80::f64d:30ff:fe64:21bb/64 scope link valid_lft forever preferred_lft forever 3: wlp2s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000 link/ether b8:81:98:9f:8f:1c brd ff:ff:ff:ff:ff:ff 4: enp0s20u3c2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000 link/ether 14:91:82:3b:7b:b9 brd ff:ff:ff:ff:ff:ff [root@clgmol ~]# dmesg | tail -n15 [ 10.582462] Bluetooth: hci0: Intel device is already patched. patch num: 25 [ 10.770781] usb 2-3: new SuperSpeed USB device number 3 using xhci_hcd [ 10.782704] usb 2-3: New USB device found, idVendor=13b1, idProduct=0041 [ 10.782728] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=6 [ 10.782745] usb 2-3: Product: Linksys USB3GIGV1 [ 10.782759] usb 2-3: Manufacturer: Linksys [ 10.782772] usb 2-3: SerialNumber: 000001000000 [ 10.787858] cdc_ether 2-3:2.0 eth0: register 'cdc_ether' at usb-0000:00:14.0-3, CDC Ethernet Device, 14:91:82:3b:7b:b9 [ 14.140292] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) [ 14.175958] Netfilter messages via NETLINK v0.30. [ 14.178428] ctnetlink v0.93: registering with nfnetlink. [ 14.350689] ipt_ULOG: ULOG: fail to register logger. [ 15.192593] ipt_ULOG: ULOG: fail to register logger. I create /etc/sysconfig/network-scripts/ifcfg-enp0s20u3c2 using the hardware address from ip addr en uuid created with uuidgen but I don't understand why it's not created on install: TYPE=Ethernet BOOTPROTO=static DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=no IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_FAILURE_FATAL=no IPV6_ADDR_GEN_MODE=stable-privacy NAME=enp0s20u3c2 UUID=a728528c-0be7-49bc-9478-05743a285a7d DEVICE=enp0s20u3c2 ONBOOT=yes PEERDNS=yes PEERROUTES=yes NM_CONTROLLED=no HWADDR=14:91:82:3b:7b:b9 IPADDR=192.168.70.1 NETMASK=255.255.255.0 Next I cannot launch the network: [root@clgmol ~]# systemctl status network ● network.service - LSB: Bring up/down networking Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled) Active: failed (Result: exit-code) since di 2017-02-21 20:57:56 CET; 15s ago Docs: man:systemd-sysv-generator(8) Process: 2638 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE) CGroup: /system.slice/network.service └─1076 /sbin/dhclient -H clgmol -1 -q -lf /var/lib/dhclient/dhclient-13b56b89-7b1d-42fa-aeb7-af96a38102ce-enp3s0.lease -pf /var/run/dhclient-enp3s0.pid en... feb 21 20:57:56 clgmol.router network[2638]: RTNETLINK answers: File exists feb 21 20:57:56 clgmol.router network[2638]: RTNETLINK answers: File exists feb 21 20:57:56 clgmol.router network[2638]: RTNETLINK answers: File exists feb 21 20:57:56 clgmol.router network[2638]: RTNETLINK answers: File exists feb 21 20:57:56 clgmol.router network[2638]: RTNETLINK answers: File exists feb 21 20:57:56 clgmol.router network[2638]: RTNETLINK answers: File exists feb 21 20:57:56 clgmol.router systemd[1]: network.service: control process exited, code=exited status=1 feb 21 20:57:56 clgmol.router systemd[1]: Failed to start LSB: Bring up/down networking. feb 21 20:57:56 clgmol.router systemd[1]: Unit network.service entered failed state. feb 21 20:57:56 clgmol.router systemd[1]: network.service failed. [root@clgmol ~]# ifup enp0s20u3c2 arping: recvfrom: Netwerk ligt plat RTNETLINK answers: Network is down I disabled NetworkManager I tried with another Linksys device and I reinstalled and started over. Why does it work with other devices and not with this one? Many thanks for any advise. Greetings, J

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Centos 7 with Postfixadmin, what provides php5-mysql
by Robert Moskowitz 21 Feb '17

21 Feb '17

I am building a Centos7 mailserver to replace my Centos6 server. This means moving to Apache 2.4 and MariaDB, so I am finding a number of changes from my notes. I now have MariaDB running with the databases created and Apache running. I try accessing postfixadmin and get: DEBUG INFORMATION: MySQL 4.1 functions not available! (php5-mysqli installed?) database_type = 'mysqli' in config.inc.php, are you using a different database? Please check the documentation and website for more information. ================= mysqli is what the config.inc.php says to use for // mysqli = MySQL 4.1+ or MariaDB I installed httpd mod_ssl php mariadb-server Thanks for any help on this.

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