On 05/05/2011 12:14 AM, David Touzeau wrote: > Dear, > > I have an issue about hide processes on the host > > I have a watchdog script on the host that ensure slapd is up > > there is different behavior using pidof or pgrep > > the ps aux output > > # ps aux|grep slapd > root 2444 0.0 0.2 149296 6816 ? Ssl May03 > 1:21 /usr/sbin/slapd -4 -u root -g root -f /etc/ldap/slapd.conf -h > ldap://127.0.0.1:389/ > root 23279 0.0 0.1 29040 6176 ? Ssl 23:40 > 0:00 /usr/sbin/slapd -4 -u root -g root -f /etc/openldap/slapd.conf -h > ldap://127.0.0.1:389/ > > Has we can see: The process 23279 running inside the container > > the pgrep output the same output > # pgrep -l -f "/usr/sbin/slapd" > 2444 /usr/sbin/slapd -4 -u root -g root -f /etc/ldap/slapd.conf -h > ldap://127.0.0.1:389/ > 23279 /usr/sbin/slapd -4 -u root -g root -f /etc/openldap/slapd.conf -h > ldap://127.0.0.1:389 > > Only the pidof point to the right process > # pidof /usr/sbin/slapd > 2444 > > The problem is when the slapd process on the host is down, my script > detect the container process, it think that slpad is up and did not > react. > > I have searched if there is some "pointers" on the host inside > the /proc/xxx directory (eg /proc/status, /proc/cmdline ) that shgould > helps my script to detecting that the process is not a "host" process > but no luck.
hi! host: $ cat /proc/744/cgroup 1:blkio,net_cls,freezer,devices,memory,cpuacct,cpu,ns,cpuset:/ container: $ cat /proc/25924/cgroup 1:blkio,net_cls,freezer,devices,memory,cpuacct,cpu,ns,cpuset:/svn In other words, if /proc/PID/cgroups exists and its last character is not /, then it's a container process. tamas ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
