Estou tendo problemas para fazer com que um arquivo da unidade de serviço do systemd seja executado corretamente quando o servidor for reinicializado. Este servidor é uma instalação recente do CentOS 7.0.1406. Estou tentando configurá-lo com várias instâncias httpd do Apache. Em uma instalação mais antiga do CentOS, tive as instâncias de httpd funcionando bem e agora estou tentando migrar essas configurações para o novo CentOS que usa o systemd.
Eu posso ativar o serviço, iniciá-lo, reiniciá-lo e interrompê-lo sem problemas. Quando eu faço uma reinicialização, ele diz "Nenhum arquivo ou diretório". Se eu reativar o serviço, tudo funcionará novamente até a próxima reinicialização.
Arquivo de serviço:
[Unit]
Description=Apache web server instance apache01
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
PIDFile=/data/apacheinstances/apache01/logs/httpd.pid
ExecStart=/data/apacheinstances/apache01/bin/apachectl start
ExecStop=/data/apacheinstances/apache01/bin/apachectl stop
ExecReload=/data/apacheinstances/apache01/bin/apachectl reload
PrivateTmp=true
LimitNOFILE=infinity
[Install]
WantedBy=multi-user.target
Como eu habilitei:
$ sudo systemctl enable /data/apacheinstances/apache01/bin/apache01.service
ln -s '/data/apacheinstances/apache01/bin/apache01.service' '/etc/systemd/system/multi-user.target.wants/apache01.service'
ln -s '/data/apacheinstances/apache01/bin/apache01.service' '/etc/systemd/system/apache01.service'
$ sudo systemctl status apache01
apache01.service - Apache web server instance apache01
Loaded: loaded (/data/apacheinstances/apache01/bin/apache01.service; enabled)
Active: inactive (dead)
Como eu comecei:
$ sudo systemctl start apache01
$ sudo systemctl status apache01
apache01.service - Apache web server instance apache01
Loaded: loaded (/data/apacheinstances/apache01/bin/apache01.service; enabled)
Active: active (running) since Wed 2014-10-08 14:37:56 PDT; 13s ago
Process: 1740 ExecStart=/data/apacheinstances/apache01/bin/apachectl start (code=exited, status=0/SUCCESS)
Main PID: 1746 (httpd)
CGroup: /system.slice/apache01.service
+-1746 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1747 /usr/local/sbin/cronolog /data/apacheinstances/apache01/logs/error_log-%Y%m
+-1748 /usr/local/sbin/cronolog /data/apacheinstances/apache01/logs/access_log-%Y%m
+-1749 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1750 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1751 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
Oct 08 14:37:56 server105 apachectl[1740]: Starting apache01: [ OK ]
Oct 08 14:37:56 server105 systemd[1]: PID file /data/apacheinstances/apache01/logs/httpd.pid not readable (yet?) after start.
Oct 08 14:37:56 server105 systemd[1]: Started Apache web server instance apache01.
Como eu reiniciei:
$ sudo systemctl restart apache01
$ sudo systemctl status apache01
apache01.service - Apache web server instance apache01
Loaded: loaded (/data/apacheinstances/apache01/bin/apache01.service; enabled)
Active: active (running) since Wed 2014-10-08 14:38:40 PDT; 12s ago
Process: 1836 ExecStop=/data/apacheinstances/apache01/bin/apachectl stop (code=exited, status=0/SUCCESS)
Process: 1844 ExecStart=/data/apacheinstances/apache01/bin/apachectl start (code=exited, status=0/SUCCESS)
Main PID: 1850 (httpd)
CGroup: /system.slice/apache01.service
+-1850 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1851 /usr/local/sbin/cronolog /data/apacheinstances/apache01/logs/error_log-%Y%m
+-1852 /usr/local/sbin/cronolog /data/apacheinstances/apache01/logs/access_log-%Y%m
+-1853 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1855 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1856 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
Oct 08 14:38:40 server105 apachectl[1844]: Starting apache01: [ OK ]
Oct 08 14:38:40 server105 systemd[1]: PID file /data/apacheinstances/apache01/logs/httpd.pid not readable (yet?) after start.
Oct 08 14:38:40 server105 systemd[1]: Started Apache web server instance apache01.
Como parei:
$ sudo systemctl stop apache01
$ sudo systemctl status apache01
apache01.service - Apache web server instance apache01
Loaded: loaded (/data/apacheinstances/apache01/bin/apache01.service; enabled)
Active: inactive (dead) since Wed 2014-10-08 14:39:44 PDT; 12s ago
Process: 1940 ExecStop=/data/apacheinstances/apache01/bin/apachectl stop (code=exited, status=0/SUCCESS)
Process: 1844 ExecStart=/data/apacheinstances/apache01/bin/apachectl start (code=exited, status=0/SUCCESS)
Main PID: 1850 (code=exited, status=0/SUCCESS)
Oct 08 14:38:40 server105 apachectl[1844]: Starting apache01: [ OK ]
Oct 08 14:38:40 server105 systemd[1]: PID file /data/apacheinstances/apache01/logs/httpd.pid not readable (yet?) after start.
Oct 08 14:38:40 server105 systemd[1]: Started Apache web server instance apache01.
Oct 08 14:39:44 server105 systemd[1]: Stopping Apache web server instance apache01...
Oct 08 14:39:44 server105 apachectl[1940]: Stopping apache01: [ OK ]
Oct 08 14:39:44 server105 systemd[1]: Stopped Apache web server instance apache01.
Status após a reinicialização:
$ sudo systemctl status apache01
apache01.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
Oct 08 14:44:58 server105 systemd[1]: Cannot add dependency job for unit apache01.service, ignoring: Unit apache01.service failed to load: No such file or directory.
Como posso reativar e iniciar:
$ sudo systemctl reenable /data/apacheinstances/apache01/bin/apache01.service
rm '/etc/systemd/system/apache01.service'
rm '/etc/systemd/system/multi-user.target.wants/apache01.service'
ln -s '/data/apacheinstances/apache01/bin/apache01.service' '/etc/systemd/system/multi-user.target.wants/apache01.service'
ln -s '/data/apacheinstances/apache01/bin/apache01.service' '/etc/systemd/system/apache01.service'
$ sudo systemctl start apache01
$ sudo systemctl status apache01
apache01.service - Apache web server instance apache01
Loaded: loaded (/data/apacheinstances/apache01/bin/apache01.service; enabled)
Active: active (running) since Wed 2014-10-08 14:52:20 PDT; 5s ago
Process: 1737 ExecStart=/data/apacheinstances/apache01/bin/apachectl start (code=exited, status=0/SUCCESS)
Main PID: 1743 (httpd)
CGroup: /system.slice/apache01.service
+-1743 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1744 /usr/local/sbin/cronolog /data/apacheinstances/apache01/logs/error_log-%Y%m
+-1745 /usr/local/sbin/cronolog /data/apacheinstances/apache01/logs/access_log-%Y%m
+-1746 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1747 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
+-1748 /usr/local/httpd-2.4.10-apache01/bin/httpd -f /data/apacheinstances/apache01/conf/httpd.conf -k start
Oct 08 14:52:20 server105 apachectl[1737]: Starting apache01: [ OK ]
Oct 08 14:52:20 server105 systemd[1]: PID file /data/apacheinstances/apache01/logs/httpd.pid not readable (yet?) after start.
Oct 08 14:52:20 server105 systemd[1]: Started Apache web server instance apache01.
Não sei por que funciona sem problemas antes da reinicialização, mas depois falha. Se eu não fizer o reenable, continuo a receber o mesmo erro sobre "Nenhum arquivo ou diretório".
Eu tentei pesquisar a funcionalidade de registro no systemd para determinar qual arquivo ou diretório ele não pode encontrar, mas desenhei um espaço em branco.
Alguém mais já experimentou esse tipo de comportamento antes?