Fred'ô farias06

Pour fixer le problème des changements de permission sur /dev/null par systemd j’ai fait la commande suivante :

# grep -riL "ExecStartPost" /usr/lib/systemd/system/*service | xargs grep "TTYPath=/dev/tty" | sed 's/:/ /g' | awk '{print $1}' | xargs sed -i '/^ExecStart.*/i ExecStartPost = -/usr/bin/xset -display :0 -dpms s off'

# systemctl daemon-reload

Pour tous les types TTY j’ai ajouté :

ExecStartPost = -/usr/bin/xset -display :0 -dpms s off

J’ai l’impression que le problème est fixé.

Voici le fichier que j’utilise dans /usr/lib/systemd/system/asterisk.service :

[Unit]
Description=Asterisk PBX and telephony daemon.
After=network.target

[Service]
ExecReload=/usr/sbin/asterisk -rx "core reload"
ExecStart=/usr/sbin/asterisk -mqf -C  /etc/asterisk/asterisk.conf
ExecStop=/usr/sbin/asterisk -rx "core stop now"
PIDFile=/var/run/asterisk/asterisk.pid
Restart=on-failure
RestartSec=10
Type=simple
TimeoutStartSec=300

Environment=HOME=/var/lib/asterisk
LimitCORE=infinity
LimitNOFILE=65536
WorkingDirectory=/var/lib/asterisk
User=asterisk
Group=asterisk
PrivateTmp=false
NoNewPrivileges=yes
ProtectHome=no

[Install]
WantedBy=multi-user.target

J’ai pas fini avec le fichier /etc/asterisk/modules.conf , j’ai quelques problèmes dans le build :

;
; Asterisk configuration file
;
; Module Loader configuration file
;

[modules]
autoload=yes
;
; Any modules that need to be loaded before the Asterisk core has been
; initialized (just after the logger initialization) can be loaded
; using 'preload'.  'preload' forces a module and the modules it
; is known to depend upon to be loaded earlier than they normally get
; loaded.
;
; NOTE: There is no good reason left to use 'preload' anymore.  It was
; historically required to preload realtime driver modules so you could
; map Asterisk core configuration files to Realtime storage.
; This is no longer needed.
;
;preload = your_special_module.so
;
; If you want Asterisk to fail if a module does not load, then use
; the "require" keyword. Asterisk will exit with a status code of 2
; if a required module does not load.
;
;require = chan_pjsip.so
;
; If you want you can combine with preload
; preload-require = your_special_module.so
;
;load = res_musiconhold.so
;
; Load one of: alsa, or console (portaudio).
; By default, load chan_console only (automatically).
;
noload = chan_alsa.so
;noload = chan_console.so
;
; Do not load res_hep and kin unless you are using HEP monitoring
; http://sipcapture.org in your network.
;
noload = res_hep.so
noload = res_hep_pjsip.so
noload = res_hep_rtcp.so
;
; Do not load chan_sip by default, it may conflict with res_pjsip.
noload = chan_sip.so
;
; Load one of the voicemail modules as they are mutually exclusive.
; By default, load app_voicemail only (automatically).
;
;noload = app_voicemail.so
noload = app_voicemail_imap.so
noload = app_voicemail_odbc.so

; 
noload = res_config_ldap.so
noload = app_jack.so
noload = res_config_pgsql.so
noload = res_phoneprov.so
noload = res_smdi.so
noload = res_pjsip_phoneprov_provider.so
noload = cdr_csv.so
noload = cdr_sqlite3_custom.so
noload = cdr_manager.so
noload = cdr_pgsql.so
noload = cdr_tds.so
noload = cdr_odbc.so
noload = cel_sqlite3_custom.so
noload = cel_tds.so
noload = app_alarmreceiver.so
noload = cel_pgsql.so
noload = res_pjsip_transport_websocket.so
noload = res_config_sqlite3.so
noload = res_config_pgsql.so
noload = chan_oss.so
noload = chan_alsa.so
noload = app_minivm.so

J’ai pu voir l’erreur suivante :

Module yaml error: Unexpected key in data: static_context [line 9 col 3]

Pour fixer le problème :

# yum update libmodulemd
rabbitmq_erlang                                                                                        315  B/s | 833  B     00:02    
rabbitmq_erlang-source                                                                                 489  B/s | 819  B     00:01    
Module yaml error: Unexpected key in data: static_context [line 9 col 3]
Module yaml error: Unexpected key in data: static_context [line 9 col 3]
Dépendances résolues.
=======================================================================================================================================
 Paquet                         Architecture              Version                           Dépôt                                Taille
=======================================================================================================================================
Mise à jour:
 libmodulemd                    x86_64                    2.13.0-1.el8                      ol8_baseos_latest                    233 k

Résumé de la transaction
=======================================================================================================================================
Mettre à niveau  1 Paquet

Taille totale des téléchargements : 233 k
Voulez-vous continuer ? [o/N] : o
Téléchargement des paquets :
libmodulemd-2.13.0-1.el8.x86_64.rpm                                                                    3.4 MB/s | 233 kB     00:00    
---------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                  3.2 MB/s | 233 kB     00:00     
Test de la transaction
La vérification de la transaction a réussi.
Lancement de la transaction de test
Transaction de test réussie.
Exécution de la transaction
  Préparation           :                                                                                                          1/1 
  Mise à jour           : libmodulemd-2.13.0-1.el8.x86_64                                                                          1/2 
  Nettoyage de          : libmodulemd-2.9.4-2.el8.x86_64                                                                           2/2 
  Exécution du scriptlet: libmodulemd-2.9.4-2.el8.x86_64                                                                           2/2 
  Vérification de       : libmodulemd-2.13.0-1.el8.x86_64                                                                          1/2 
  Vérification de       : libmodulemd-2.9.4-2.el8.x86_64                                                                           2/2 

Mis à niveau:
  libmodulemd-2.13.0-1.el8.x86_64                                                                                                      

Terminé !

Ma version de Oracle Linux 8.3 :

J’ai essayé une migration avec Leapp mais sans succès, pourtant je pense bien avoir suivi la procédure.

Etape 1 : Mise en place de la dernier version de la Oracle Linux 7.x :

# sudo yum upgrade
... reboot ...
# cat /etc/system-release
Oracle Linux Server release 7.9
# yum repolist
Modules complémentaires chargés : ulninfo
id du dépôt                                                             nom du dépôt                                                                                                                           statut
ol7_UEKR5/x86_64                                                        Latest Unbreakable Enterprise Kernel Release 5 for Oracle Linux 7Server (x86_64)                                                          702
ol7_latest/x86_64                                                       Oracle Linux 7Server Latest (x86_64)                                                                                                   24 259
repolist: 24 961

Etape 2 : Suppression des anciens Kernel :

Ma version de VirtualBox: 6.1.18 et ma version de Windows : Windows 10 Entreprise OS Build 18363.1379 .

J’ai du faire ceci :

1-Lancer un prompt en Administrateur ;

2-Lancer la commande :

bcdedit /set hypervisorlaunchtype off

3-Faire un reboot :

shutdown -s -t 2

Voici les logs de Virtual Box qui plantait:

00:00:03.654980 Full Name: "Intel(R) Core(TM) i7-9850H CPU @ 2.60GHz"
00:00:03.654981 TLB 2/4M Instr/Uni: res0 0 entries
00:00:03.654981 TLB 2/4M Data: res0 0 entries
00:00:03.654982 TLB 4K Instr/Uni: res0 0 entries
00:00:03.654982 TLB 4K Data: res0 0 entries
00:00:03.654982 L1 Instr Cache Line Size: 0 bytes
00:00:03.654983 L1 Instr Cache Lines Per Tag: 0
00:00:03.654983 L1 Instr Cache Associativity: res0
00:00:03.654983 L1 Instr Cache Size: 0 KB
00:00:03.654983 L1 Data Cache Line Size: 0 bytes
00:00:03.654984 L1 Data Cache Lines Per Tag: 0
00:00:03.654984 L1 Data Cache Associativity: res0
00:00:03.654984 L1 Data Cache Size: 0 KB
00:00:03.654985 L2 TLB 2/4M Instr/Uni: off 0 entries
00:00:03.654985 L2 TLB 2/4M Data: off 0 entries
00:00:03.654985 L2 TLB 4K Instr/Uni: off 0 entries
00:00:03.654986 L2 TLB 4K Data: off 0 entries
00:00:03.654986 L2 Cache Line Size: 0 bytes
00:00:03.654987 L2 Cache Lines Per Tag: 0
00:00:03.654987 L2 Cache Associativity: off
00:00:03.654987 L2 Cache Size: 0 KB
00:00:03.654988 TS - Temperature Sensor = 0 (0)
00:00:03.654989 FID - Frequency ID control = 0 (0)
00:00:03.654990 VID - Voltage ID control = 0 (0)
00:00:03.654990 TscInvariant - Invariant Time Stamp Counter = 1 (1)
00:00:03.654991 CBP - Core Performance Boost = 0 (0)
00:00:03.654992 EffFreqRO - Read-only Effective Frequency Interface = 0 (0)
00:00:03.654992 ProcFdbkIf - Processor Feedback Interface = 0 (0)
00:00:03.654993 ProcPwrRep - Core power reporting interface support = 0 (0)
00:00:03.654994 Physical Address Width: 39 bits
00:00:03.654994 Virtual Address Width: 48 bits
00:00:03.654994 Guest Physical Address Width: 0 bits
00:00:03.654995 Physical Core Count: 1
00:00:03.654996
00:00:03.654996 ******************** End of CPUID dump **********************
0:00:03.655008 VMEmt: Halt method global1 (5)
00:00:03.655098 VMEmt: HaltedGlobal1 config: cNsSpinBlockThresholdCfg=50000
00:00:03.655176 Changing the VM state from 'CREATING' to 'CREATED'
00:00:03.656076 Changing the VM state from 'CREATED' to 'POWERING_ON'
00:00:03.656236 AIOMgr: Endpoints without assigned bandwidth groups:
00:00:03.656252 AIOMgr: E:\LIVECD\OracleLinux-R8-U3-x86_64-dvd.iso
00:00:03.656258 AIOMgr: E:\Oracle Linux 8.3\Oracle Linux 8.3.vdi
00:00:03.656697 Changing the VM state from 'POWERING_ON' to 'RUNNING'
00:00:03.656717 Console: Machine state changed to 'Running'
00:00:03.658838 VMMDev: Guest Log: BIOS: VirtualBox 6.1.18
00:00:03.659012 PCI: Setting up resources and interrupts
00:00:03.664606 ERROR [COM]: aRC=VBOX_E_VM_ERROR (0x80bb0003) aIID={4680b2de-8690-11e9-b83d-5719e53cf1de} aComponent={DisplayWrap} aText={Could not take a screenshot (VERR_NOT_SUPPORTED)}, preserve=false aResultDetail=-37
00:00:03.690437 PIT: mode=2 count=0x10000 (65536) - 18.20 Hz (ch=0)
00:00:03.706765 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0 flags=0x0 origin=0,0
00:00:03.709342 VMMDev: Guest Log: CPUID EDX: 0x178bfbff
00:00:03.709485 PIIX3 ATA: Ctl#0: RESET, DevSel=0 AIOIf=0 CmdIf0=0x00 (-1 usec ago) CmdIf1=0x00 (-1 usec ago)
00:00:03.709529 PIIX3 ATA: Ctl#0: finished processing RESET
00:00:03.712679 AHCI#0: Reset the HBA
00:00:03.712694 VD#0: Cancelling all active requests
00:00:03.712851 AHCI#0: Port 0 reset
00:00:03.712929 VD#0: Cancelling all active requests
00:00:03.713609 VMMDev: Guest Log: BIOS: AHCI 0-P#0: PCHS=16383/16/63 LCHS=1024/255/63 0x000000000a36f580 sectors
00:00:03.717731 PIT: mode=2 count=0x48d3 (18643) - 64.00 Hz (ch=0)
00:00:03.745810 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=000000000f300000 w=640 h=480 bpp=32 cbLine=0xA00 flags=0x0 origin=0,0
00:00:04.157989 GUI: UIMachineViewScale::resendSizeHint: Restoring guest size-hint for screen 0 to 800x600
00:00:04.158041 VMMDev: SetVideoModeHint: Got a video mode hint (800x600x32)@(0x0),(1;0) at 0
00:00:04.161243 GUI: 2D video acceleration is disabled
00:00:04.161314 GUI: HID LEDs sync is enabled
00:00:06.200584 PIT: mode=2 count=0x10000 (65536) - 18.20 Hz (ch=0)
00:00:06.200907 VMMDev: Guest Log: BIOS: Boot : bseqnr=1, bootseq=0023
00:00:06.205053 VMMDev: Guest Log: BIOS: Booting from CD-ROM...
00:00:06.212463 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0 flags=0x0 origin=0,0
00:00:06.265354 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=000000000f300000 w=640 h=480 bpp=24 cbLine=0x780 flags=0x0 origin=0,0
00:00:09.954650 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0 flags=0x0 origin=0,0
00:00:10.635396 VMMDev: Guest Log: BIOS: KBD: unsupported int 16h function 03
00:00:10.635672 VMMDev: Guest Log: BIOS: AX=0305 BX=0000 CX=0000 DX=0000
00:00:10.636346 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=81
00:00:10.636666 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=81
00:00:10.637007 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=82
00:00:10.637332 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=82
00:00:10.637672 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=83
00:00:10.637991 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=83
00:00:10.638335 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=84
00:00:10.638654 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=84
00:00:10.638994 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=85
00:00:10.639343 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=85
00:00:10.639737 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=86
00:00:10.640057 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=86
00:00:10.640404 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=87
00:00:10.640723 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=87
00:00:10.641063 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=88
00:00:10.641385 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=88
00:00:10.641725 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=89
00:00:10.642044 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=89
00:00:10.642389 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8a
00:00:10.642709 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8a
00:00:10.643172 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8b
00:00:10.643494 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8b
00:00:10.643908 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8c
00:00:10.644298 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8c
00:00:10.644639 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8d
00:00:10.644956 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8d
00:00:10.645295 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8e
00:00:10.645612 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8e
00:00:10.645949 VMMDev: Guest Log: int13_harddisk_ext: function 41, unmapped device for ELDL=8f
00:00:10.646291 VMMDev: Guest Log: int13_harddisk: function 02, unmapped device for ELDL=8f
00:00:10.981711 GIM: KVM: VCPU 0: Enabled system-time struct. at 0x000000004c401000 - u32TscScale=0xc587b80f i8TscShift=-1 uVersion=2 fFlags=0x1 uTsc=0x46ba43e2f uVirtNanoTS=0x1b496aa89 TscKHz=2592008
00:00:10.981754 TM: Host/VM is not suitable for using TSC mode 'RealTscOffset', request to change TSC mode ignored
00:00:11.616013 GIM: KVM: Enabled wall-clock struct. at 0x000000004c400000 - u32Sec=1615824502 u32Nano=683849407 uVersion=2
00:00:11.665390 PIT: mode=2 count=0x4a9 (1193) - 1000.15 Hz (ch=0)
00:00:11.776216 MsrExit/0: 0010:ffffffffabe64d98/LM: WRMSR 00000033, 20000000:00000000 -> VERR_CPUM_RAISE_GP_0!

Voici l’erreur que j’avais :

# php -v
PHP Warning:  PHP Startup: Unable to load dynamic library 'redis.so' (tried: /usr/lib64/php/modules/redis.so (/usr/lib64/php/modules/redis.so: undefined symbol: zval_used_for_init), /usr/lib64/php/modules/redis.so.so (/usr/lib64/php/modules/redis.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
PHP 7.2.24 (cli) (built: Oct 22 2019 08:28:36) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies

La procédure d’installation :

# yum install glibc glibc-devel gcc-c++
# yum install php-devel
# yum install make
# pecl install redis
# yum install curl-devel
# yum install php-json
# pecl install phalcon

Encore une erreur :

Un petit exemple vaut mieux que de grands discours, voici le source en C :

#include 
#include 
#include 
#include <sys/time.h>
#include <sys/types.h>
#include 
static long debut = 0;
void* longue_pause(void* a){
        pid_t t = getpid();
        printf("pid = %d\n",(int)t);
        printf("thread longue_pause %d debut : %ld\n",(int)pthread_self(),time(0)-debut);
        sleep(10);
        printf("thread longue_pause %d fin : %ld\n",(int)pthread_self(),time(0)-debut);
}
void* petites_pauses(void* a){
	int i = 0;
        pid_t t = getpid();
        printf("pid = %d\n",t);
        printf("thread petites_pauses %d debut : %ld \n",(int)pthread_self(), time(0)-debut);
        for(; i < 10 ;++i){
                printf("thread petites_pauses %d en cours : %ld \n",(int)pthread_self(), time(0)-debut);
                sleep(1);
        }
}
int main(){
        pthread_t longue;
        pthread_t petit1;
        pthread_t petit2;
        debut = time(0);
        pthread_create(&longue,NULL,longue_pause,NULL);
        pthread_create(&petit1,NULL,petites_pauses,NULL);
        pthread_create(&petit2,NULL,petites_pauses,NULL);
	sleep(8);
	printf("Debut join: %ld\n",time(0)-debut);
        pthread_join(longue,NULL);
        printf("fin long : %ld\n",time(0)-debut); 
        pthread_join(petit1,NULL);
	printf("fin petit1 : %ld\n",time(0)-debut);	
        pthread_join(petit2,NULL);
	printf("fin petit2 : %ld\n",time(0)-debut);
}

Pour la compilation :

History of glibc and CVE for Oracle Linux 7.x ( 7.0 / 7.1 / 7.2 / 7.3 / 7.4 / 7.5 ) :

So Redhat ( and Oracle Linux, because it’s fork )  uses branch GLIBC 2.17 instead GLIBC 2.27 …

Question : What’s the current CVE on 2.17-222 ? It’s plan to merge with 2.27 ?

Big gap on GLIBC between Redhat & Fédora :

Thanks.

Je fais un petit article pour mettre mes configurations de Redis (de l’anglais REmote DIctionary Server qui peut-être traduit par « serveur de dictionnaire distant ») sous Linux, afin de partager et aussi de corriger si nécessaire. Redis est développé en C AINSI comme tous les bons logiciels, il fait partie des NoSQL ( https://fr.wikipedia.org/wiki/NoSQL ). Les plus intéressant à connaitre sont : REDIS, MongoDB ( https://www.mongodb.com/fr ) , CouchDB ( http://couchdb.apache.org ) .

C’était une super édition avec beaucoup d’échanges ( Docker, Zabbix, PostgreSQL, Redhat, Fédora, RabbitMQ, …) , et superbe discours d’Axelle Lemaire en ouverture. Même si on préférerait voir des actes plutôt que des beaux discours ;) . Vivement le Libre dans l’éducation nationale, la police, la défense, … . Voir que même les ministères signent des contrats ailleurs qu’en France (en Irlande), ce n’est pas montrer le bon exemple. Lire cet article de l’APRIL : https://www.april.org/l-april-demande-la-publication-de-l-accord-de-securite-entre-microsoft-et-l-etat.